CN113482007B

CN113482007B - Waist beam supporting structure and construction method thereof

Info

Publication number: CN113482007B
Application number: CN202110692797.6A
Authority: CN
Inventors: 张启军; 张昌太; 林西伟; 张明义; 王永洪; 白晓宇; 赵春亭; 侯伟平; 王金龙; 刘永鑫
Original assignee: Qingdao Yegao Construction Engineering Co ltd Shibei Branch
Current assignee: Qingdao Huirui Technology Co ltd
Priority date: 2021-06-22
Filing date: 2021-06-22
Publication date: 2024-02-09
Anticipated expiration: 2041-06-22
Also published as: CN113482007A

Abstract

The invention discloses a waist beam supporting structure and a construction method thereof, wherein the waist beam supporting structure comprises supporting piles, a waist beam mould, anchor rods and supporting components, a plurality of supporting piles are circumferentially distributed along the side wall of a deep foundation pit or a side slope, the waist beam mould comprises an inner side mould, an outer side mould, a top mould, a bottom mould and an end cover, a pouring cavity is formed in the waist beam mould, a plurality of pouring openings are formed in the top mould, the anchor rods pass through the inner side mould and the outer side mould, and the other side of the anchor rods are inserted into anchor rod holes; the support component sets up in the waist rail mould below that the empty area corresponds between the stake, and it includes base, telescopic bracket, support frame and support module, in the support module extends to the soil layer from waist rail mould bottom, the waist rail mould integration is made, has saved natural resources such as template timber and reinforcing bar greatly, and the waist rail mould is prefabricated in the batch production, and on-the-spot waist rail mould is fixed simply, does not need complicated formwork, support work, does not need to carry out complicated reinforcing bar ligature and installation fixed work, has alleviateed operating personnel's intensity of labour.

Description

Waist beam supporting structure and construction method thereof

Technical Field

The invention belongs to the technical field of constructional engineering, and particularly relates to a waist beam supporting structure and a construction method thereof.

Background

In engineering construction deep foundation pit supporting and slope reinforcement projects, a waist beam structural member is often used, and the conventional waist beam structural member generally adopts cast-in-situ reinforced concrete or a steel waist beam.

The cast-in-situ reinforced concrete structure and the process have the following problems:

(1) Because the waist beam structure is a special-shaped beam generally, the cross section size is smaller, and an anchor rod is needed to be penetrated on the cross section of the waist beam structure, the difficulty of supporting a template is high, the waist beam is easy to loosen as a whole, the problem of building quality exists, the supporting efficiency is low, and the progress is slow;

(2) In the process of supporting the waist beam, the amount of wood used is large, and natural resources are wasted; meanwhile, a large number of workers are needed for manufacturing, installing and supporting the templates by the reinforcing steel bars, and the cost is high.

The following problems exist in the steel waist beam structure and the process:

(1) Poor integrity, easy deformation and influence on the use function;

(2) The steel is used in a large amount, and mineral resources are wasted; the welding quantity is large; heavy weight, often requiring hoisting machinery and a large amount of labor; the cost is high.

Through retrieval, the patent name of the detachable combined type section steel waist beam is the application of the invention with the application number of 201510380197.0, which discloses a detachable combined type section steel waist beam, and aims at solving the problem of insufficient bearing of a common section steel waist beam by adopting section steel with different sections in different stress areas. The invention relates to an improved steel waist beam, which still has similar problems of a common steel waist beam structure and a common steel waist beam technology, reduces the welding workload, but has great bolt assembly workload, and has great site installation difficulty because of the enlarged deviation of anchor rod holes on a construction site, and most project sites have no recovery condition and have great disposable investment.

The patent name of the assembled waist beam is CN102704490B, and the assembled waist beam consists of section steel and reinforced concrete. The steel reinforced concrete waist beam structure solves the problem that a steel waist beam is easy to deform, and is large in steel consumption, heavy in weight, difficult to install and high in cost, most project sites do not have recovery conditions, and one-time investment is large.

The invention provides an assembled waist beam reinforcement structure and a construction method of a deep foundation pit pile anchor support, and the application of the invention with the application publication number of CN 112195932A, which aims at facilitating reinforcement binding and improving the bottom tensile resistance and the compression resistance of arc-shaped pile clamping surfaces at two sides. The invention relates to an improved cast-in-situ reinforced concrete waist beam, which still has similar problems of the common cast-in-situ reinforced concrete structure and process, has large reinforcing steel bar binding workload and formwork supporting workload, and has the advantages of difficult formwork turnover, large wood consumption and high cost due to the special beam.

Disclosure of Invention

The invention aims to provide a waist beam supporting structure and a construction method thereof, which are used for solving the problems that in the prior art, the difficulty is high in the waist beam supporting process, the waist beam structure is easy to loosen, the wood and steel bars are large in the traditional waist beam supporting process, and the cost is high; meanwhile, the technology of manufacturing, installing and supporting the template by the steel bars is complex, and the labor intensity of operators is high.

In order to achieve the aim of the invention, the invention is realized by adopting the following technical scheme:

in one aspect, the present invention provides a wale support structure, comprising:

the supporting piles are circumferentially distributed along the side wall of the deep foundation pit or the side slope, soil layers are arranged between the adjacent supporting piles, and anchor rod holes with certain inclination extending inwards from the side wall of the soil layers are formed in the soil layers;

the waist beam mold comprises an inner mold, an outer mold, a top mold, a bottom mold and an end cover, wherein a pouring cavity is formed in the waist beam mold, and a plurality of pouring openings are formed in the top mold and used for pouring concrete; the inner side die is in contact connection with the side wall of the supporting pile, wherein a pile empty area is formed among two adjacent supporting piles, the soil layer and the inner side die;

the anchor rod passes through the inner side die and the outer side die, and the other side of the anchor rod is inserted into the anchor rod hole;

the support assembly is arranged below the waist beam mold corresponding to the empty space between piles and comprises a base, a telescopic support arranged on the base, a support frame arranged at the top of the telescopic support and a support module arranged at the top of the support frame, and the support module extends from the bottom of the waist beam mold to the soil layer.

In some embodiments of the present application, a side of the anchor rod extending out of the outer side die is fixed by an anchor, and a bearing plate is disposed between the anchor and the outer side die.

In some embodiments of the present application, the top form is fixedly connected to the support pile through a right angle corner connector, the right angle corner connector is fixedly connected to the support pile and the top form through a first fastener, and the inner form is fixedly connected to the support pile through a second fastener.

In some embodiments of the present application, a brace is further disposed at the bottom of the wale mold in a horizontal direction, and the brace is fixed to the support pile.

In some embodiments of the present application, the support module includes a plurality of backup pads of pegging graft each other, steel membrane both sides are formed with first grafting portion and second grafting portion respectively, first grafting portion with the cooperation of second grafting portion is pegged graft, will be a plurality of adjacent backup pads are connected into an organic wholely.

In some embodiments of the present application, the top surface of the support frame is further provided with a plurality of brackets with openings facing the support plate, and the brackets correspond to the plugging positions of the first plugging portion and the second plugging portion.

In some embodiments of the present application, an included angle is formed between the bottom die and the horizontal plane, the included angle is consistent with the included angle between the anchor rod and the horizontal plane, and the included angle between the outer die and the anchor rod is 90 degrees.

In some embodiments of the application, the anchor rod outside is provided with soft sleeve, is located outside the anchor rod in the stake room space area still cup joints the steel sleeve, steel sleeve one end plug-in to in the anchor rod hole, the other end plug-in to in the waist rail mould, the steel sleeve with cup joint pour the grout between the soft sleeve in the anchor rod outside.

In some embodiments of the present application, the inner mold, the outer mold, the top mold and the bottom mold of the waist beam mold are formed by one-time pultrusion or bending welding, and a plurality of waist beam molds are connected end to end through sleeves.

In another aspect, the invention further provides a construction method of the waist beam supporting structure, which comprises the following steps:

1) After the construction of the support piles is finished, anchor rod holes are processed on the side wall of the soil layer between the adjacent support piles, and the aperture of each anchor rod hole is larger than the outer diameter of the steel pipe sleeve;

2) Inserting an anchor rod with a soft sleeve sleeved on the outer side into an anchor rod hole, sleeving a steel sleeve on the anchor rod at the space between adjacent supporting piles, wherein one end of the steel sleeve is inserted into the anchor rod hole for a length of not less than 300mm, and the other end of the steel sleeve is inserted into a waist beam die for a length of not less than 300mm, and cement paste is filled in the steel sleeve;

3) According to the practical size requirement of the side wall of a deep foundation pit or a side slope, connecting a plurality of waist beam molds into a whole through a sleeve, installing end covers on the waist beam mold at the most end part, drilling holes on the inner side mold and the outer side mold of the waist beam mold, enabling anchor rods, soft sleeves and steel sleeves to pass through holes on the inner side mold, enabling anchor rods and the soft sleeves to pass through the outer side mold, and fixing the end parts of the anchor rods extending out of the outer side mold through bearing plates and anchors after the anchor rods pass through the waist beam mold;

4) When the support pile is contacted with the non-pouring opening position of the top mould of the waist beam mould, the top mould is fixedly connected with the support pile by adopting a right angle code, and when the support pile is contacted with the pouring hole position, the inner wall of the inner side mould at the pouring hole position is fixedly connected with the support pile through a second fastener;

a supporting rib is horizontally fixed at the bottom of the waist beam mold, and one end of the supporting rib is fixed on the supporting pile;

fixing a supporting module below the waist beam mold corresponding to the empty space between piles;

5) Pouring concrete into the waist beam mould from the pouring opening, watering and curing after final setting, pouring concrete into the cavities between piles, watering and curing after final setting, and pre-coating a spacer on the upper surface of the supporting plate;

6) Removing the support component below the waist beam mold;

7) The prestress tensioning locking of the anchor rod is carried out by using a jack.

Compared with the prior art, the invention has the advantages and positive effects that:

the waist beam mold plays a role of a traditional template and a configuration steel bar, is integrally manufactured, so that natural resources such as template wood, steel bars and the like are greatly saved, the waist beam mold is prefabricated in a factory, the on-site waist beam mold is simple to fix, complex formwork supporting and supporting work is not needed, complex steel bar binding and installing and fixing work is not needed, and the labor intensity of operators is reduced;

in the section design of the waist beam, as the tension material is arranged on the surface of the beam body, the invention can save the concrete in the range of the reinforcing steel bar protection layer under the same stress condition, and simultaneously, the factory processing of the waist beam mould ensures that the shape of the waist beam is easy to control and the production cost is reduced.

Other features and advantages of the present invention will become apparent upon review of the detailed description of the invention in conjunction with the drawings.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic cross-sectional view illustrating a connection between a wale module and a support pile according to an embodiment of a wale support structure according to the present invention;

FIG. 2 is a schematic illustration of the connection of the top mold non-pouring port locations to the support piles;

FIG. 3 is a schematic diagram of the connection of the top mold pouring port position and the support pile;

FIG. 4 is a schematic cross-sectional view of a connection between a waist beam mold and a void between piles according to an embodiment of the present invention;

FIG. 5 is a schematic view of a support assembly mounting structure;

FIG. 6 is an enlarged schematic view at A in FIG. 5;

FIG. 7 is a schematic cross-sectional view of a sleeve connection;

FIG. 8 is a schematic end cap connection;

in the drawing the view of the figure,

100. supporting piles; 110. a soil layer; 111. an anchor rod hole;

200. waist beam mould; 210. a top mold; 211. pouring the port; 220. an outer mold; 230. a bottom die; 240. an inner mold;

250. concrete;

300. a bolt; 310. a pressure bearing plate; 320. an anchor;

400. right angle corner connector; 410. a first fastener; 420. a second fastener; 430. supporting ribs;

500. a void area between piles;

600. a steel sleeve;

700. an end cap;

800. a support assembly; 810. a support frame; 820. a telescopic bracket; 830. a base; 840. a support plate; 841. a first plug-in connection; 842. a second plug-in connection;

900. a sleeve.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

In the description of the present application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; may be mechanically coupled, directly coupled, or indirectly coupled via an intermediate medium. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed.

The embodiment of the application proposes a waist beam supporting structure, which comprises a plurality of supporting piles 100 circumferentially distributed along the side wall of a deep foundation pit or a side slope, a waist beam mold 200, anchor rods 300 fixed on a soil layer 110 between adjacent supporting piles 100 through the waist beam mold 200, and a supporting assembly 800 supporting and fixing the waist beam mold 200.

Specifically, the support piles 100 are preset around the side wall of the deep foundation pit or the side slope, soil layers 110 of the deep foundation pit or the side slope are arranged between adjacent support piles 100, anchor rod holes 111 are preset on the surface of the soil layers 110, and the anchor rod holes 111 extend inwards from the side wall of the soil layers 110 at a certain inclination.

The waist beam mold 200 comprises an inner side mold 240, an outer side mold 220, a top mold 210, a bottom mold 230 and an end cover 700, a plurality of waist beam molds 200 can be spliced to form a whole according to actual length requirements, the waist beam molds 200 are connected end to end through a sleeve 900, after connection is completed, the two end faces of the whole sleeve 900 are connected with the upper end cover 700, a pouring cavity is formed in the whole waist beam mold 200, and the inner side mold 240, the outer side mold 220, the top mold 210 and the bottom mold 230 are formed by adopting fiber composite material disposable pultrusion or hot-rolled steel plate bending welding manufacturing.

The fiber composite material comprises a carbon fiber composite material, a glass fiber composite material, a basalt fiber composite material and the like.

A plurality of pouring openings 211 are formed on the top die 210 in a dispersing manner, and concrete 250 is poured into the pouring cavity from the positions of the pouring openings 211; the concrete 250 is C25-C40 concrete 250, stones are easy to adopt particle sizes of 1-3cm or 1-2cm, the stones are vibrated and compacted, watering and curing are carried out after final setting, and the prestress tensioning of the anchor rod 300 can be carried out after the compressive strength reaches 20 MPa.

The inner mold 240 is in contact connection with the side wall of the support pile 100, and the corresponding positions of the top mold 210 and the support pile 100 are located at the pouring opening 211 or at the non-pouring opening 211, and the two conditions correspond to different fixing forms:

when the position of the non-pouring opening 211 corresponds to the position of the pile 100, as shown in fig. 2, the top mold 210 is fixedly connected to the pile 100 by the rectangular angle code 400, and two fixed edges of the rectangular angle code 400 are respectively connected and fixed with the pile 100 and the top mold 210 by the first fastener 410, the selection of the first fastener 410 is not limited herein, and may be a fastening bolt or a screw, and the specific number of the first fasteners 410 is also selected according to actual needs.

When the position of the pouring opening 211 corresponds to the position of the support pile 100, as shown in fig. 3, since the connection position of the top mold 210 is the pouring opening 211 and there is no connection plane, the connection and fixation between the inner mold 240 and the support pile 100 are only needed by the second fastening member 420, the selection of the second fastening member 420 is not limited, and a suitable fastening member can be selected according to the actual requirement.

The anchor rod 300 passes through the inner side die 240 and the outer side die 220 of the waist beam die 200 at a certain angle, the other side is inserted into the anchor rod hole 111, and the outer side of the anchor rod 300 is coated with a flexible sleeve with the length to be isolated from the concrete 250, so that the subsequent cementing with the concrete 250 in the waist beam die 200 is avoided.

At the position of the anchor rod 300 in the inter-pile empty space 500, a steel sleeve 600 is sleeved, the length of the steel sleeve 600 is ensured to be at least 300mm when at least one end is inserted into the anchor rod hole 111, the other end is inserted into the waist beam mold 200 at least 300mm, and the steel sleeve 600 is filled with hydraulic cement.

A pile space 500 is formed between two adjacent support piles 100, soil layers 110 and inner side molds 240, and a support assembly 800 is arranged below a waist beam mold 200 corresponding to the pile space 500, and comprises a base 830, a telescopic bracket 820 arranged on the base 830, a support frame 810 positioned at the top of the telescopic bracket 820 and a support module arranged at the top of the support frame 810, wherein the support module extends into the soil layers 110 from the bottom of the waist beam mold 200; the top of the inter-pile void 500 is supported to form a cavity having an upper side opened to facilitate filling of concrete 250 therein.

As shown in fig. 5 and 6, the supporting module comprises a plurality of supporting plates 840 inserted into each other, a first inserting portion 841 and a second inserting portion 842 are respectively formed on two sides of the steel film, the first inserting portion 841 and the second inserting portion 842 are matched to be inserted into each other, and connect the plurality of adjacent supporting plates 840 into a whole.

In some embodiments of the present application, in order to conveniently position the first plug-in portion 841 and the second plug-in portion 842, the top surface of the support frame 810 is further provided with a plurality of brackets with openings facing the support plate 840, the brackets correspond to the plug-in positions of the first plug-in portion 841 and the second plug-in portion 842, the protruding positions of the first plug-in portion 841 and the second plug-in portion 842 are located in the brackets, so as to ensure the flatness of the top surface of the support frame 810 and facilitate the installation of the support plate 840.

The side of the anchor rod 300 extending out of the outer side die 220 is fixed by an anchor 320, a bearing plate 310 is arranged between the anchor 320 and the outer side die 220 and used for dispersing the pressure of the anchor 320, the bearing plate 310 can be a steel backing plate or a backing plate formed by pultrusion of fiber composite materials, and the anchor 320 can be a conventional finished product at present.

In other embodiments of the present application, the supporting rib 430 is further disposed in the horizontal direction at the bottom of the waist beam mold 200, the supporting rib 430 is installed in the horizontal direction, one end of the supporting rib 430 is inserted into the supporting pile 100, and the end extending out of the supporting pile 100 is located below the waist beam bottom mold 230 and contacts and supports the bottom mold 230, so as to provide an upward supporting force for the waist beam mold 200.

An included angle is formed between the bottom die 230 and the horizontal plane, the included angle is consistent with the included angle between the anchor rod 300 and the horizontal plane, the width of the outer die 220 is generally not less than 200mm and not more than 400mm, the horizontal width of the top is generally not less than 150mm, the widths of the spacing dies and the holes are generally not less than 200mm and not more than 300mm, and raw materials are saved as much as possible while the structural strength is ensured.

The through hole of the outer side mold 220 should be disposed at the middle portion of the side edge, and the connecting line of the through hole with the inner side mold 240 is the same as the inclination and the inclination angle of the anchor rod 300, and the size of the through hole is adapted to the size of the rod bundle of the anchor rod 300, so that the through hole should not be excessively large.

The included angle between the outer side die 220 and the anchor rod 300 is 90 degrees, so that the end of the anchor rod 300 extending out of the outer side die 220 is ensured to be perpendicular to the surface of the outer side die 220, and the bearing plate 310 and the anchor 320 are convenient to install.

The outside of the anchor rod 300 is provided with a soft sleeve, so that the subsequent cementing with the concrete 250 in the waist beam mold 200 is avoided, the anchor rod 300 positioned in the inter-pile empty area 500 is sleeved with a steel sleeve 600, one end of the steel sleeve 600 is inserted into the anchor rod hole 111 for not less than 300mm, the other end of the steel sleeve 600 is inserted into the waist beam mold 200 for not less than 300mm, and cement slurry is poured between the steel sleeve 600 and the soft sleeve sleeved on the outside of the anchor rod 300.

1) After the construction of the support piles 100 is completed, anchor rod holes 111 are processed on the side wall of the soil layer 110 between the adjacent support piles 100, and the aperture of each anchor rod hole 111 is larger than the outer diameter of the steel pipe sleeve; the through hole of the outer side mold 220 should be arranged at the middle part of the side edge, the connecting line of the through hole with the inner side mold 240 is the same as the inclination and the inclination angle of the anchor rod 300, the size of the through hole is adapted according to the size of the anchor rod 300, and the through hole is not excessively large, so that the leakage of the subsequent poured concrete 250 is avoided;

2) Inserting the anchor rods 300 with the outer side sleeved with soft sleeves into anchor rod holes 111, sleeving steel sleeves 600 on the anchor rods 300 at the empty areas 500 between adjacent support piles 100, wherein the anchor rods are made of steel plates or made of the same material as the waist beam molds 200, and are fixedly connected with the waist beam molds on two sides by using a plurality of fixing screws, one ends of the steel sleeves 600 are inserted into the anchor rod holes 111 for a length of not less than 300mm, the other ends of the steel sleeves 600 are inserted into the waist beam molds 200 for a length of not less than 300mm, and cement paste is filled in the steel sleeves 600;

3) According to the practical size requirement of the side wall of a deep foundation pit or a side slope, a plurality of waist beam molds 200 are connected into a whole through a sleeve 900, an end cover 700 is arranged on the waist beam mold 200 at the most end part, the end cover 700 is fixed with the waist beam mold through a plurality of bolts, the concrete 250 can be disassembled and reused after final setting, an anchor rod 300, a soft sleeve and a steel sleeve 600 pass through holes on an inner side mold 240, an anchor rod 300 body and the soft sleeve pass through an outer side mold 220, and after the anchor rod 300 passes through the waist beam mold 200, the end part of the anchor rod 300 extending out of the outer side mold 220 is fixed through a bearing plate 310 and an anchorage 320;

4) When the support pile 100 is in contact with the position of the non-pouring opening 211 of the top mould 210 of the waist beam mould 200, the top mould 210 is fixedly connected with the support pile 100 by adopting a right angle code 400, and when the support pile 100 is in contact with the pouring hole position, the inner wall of the inner mould 240 at the pouring hole position is fixedly connected with the support pile 100 by a second fastener 420;

a supporting rib 430 is horizontally fixed at the bottom of the wale mold 200, and one end of the supporting rib 430 is fixed on the supporting pile 100;

fixing a support module below the waist beam mold 200 corresponding to the inter-pile empty space 500;

the support module is installed in a state that the inner side mold 240 of the waist beam mold 200 and the outer edge of the support pile 100 are not on the same vertical plane, and after the support module is installed, the cast concrete 250 fills the gap between the waist beam mold 200 and the outer wall of the soil layer 110. The supporting plate 840 is made of steel plates with the thickness of 4-5mm, the single piece width is 200-300mm, the length is generally 400-1000mm according to the field configuration, the telescopic bracket 820 is generally 300-1000mm according to the field requirement, and the shape of the supporting plate 840 close to the side wall of the soil layer 110 is set to be an oblique side cut;

when one end of the supporting plate 840 can be inserted into the side wall of the soil layer 110, only the square timber frame and the telescopic support frame 810 parallel to one side of the waist beam mold 200 are provided, and if the soil layer 110 is too hard, when the supporting plate 840 cannot be inserted, a group of telescopic support frames 810 parallel to the direction of the waist beam mold 200 need to be additionally arranged on one side of the outer wall of the soil layer 110. The upper surface of the support plate 840 is coated with a release agent to facilitate subsequent removal.

5) Pouring concrete 250 into the waist beam mold 200 from the pouring opening 211, watering and curing after final setting, pouring concrete 250 into the inter-pile cavity, watering and curing after final setting, and pre-coating a spacer on the upper surface of the supporting plate 840;

6) Removing the support assembly 800 under the waist beam mold 200;

7) The prestress tensioning of the anchor rod 300 is performed using a jack.

The waist beam mold 200 plays a role in casting concrete molding when the waist beam is cast, plays a role in replacing longitudinal steel bars and stirrups of a conventional waist beam when the anchor rods 300 are tensioned and are operated later, and is a disposable waist beam mold, and the material of the waist beam mold can be a material with easily installed quality such as fiber composite materials.

Meanwhile, the application solves the simple formwork supporting of the inter-pile empty area 500, the supporting component 800 can be repeatedly utilized, the cost is saved, and compared with the prior art, the method has the advantages of simplicity, rapidness, environmental protection and economy, and has great application value in engineering such as deep foundation pit supporting and slope reinforcing.

The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be apparent to one skilled in the art that modifications may be made to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some of the technical features thereof; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims

1. A wale support structure, comprising:

the waist beam mold comprises an inner mold, an outer mold, a top mold, a bottom mold and an end cover, wherein a pouring cavity is formed in the waist beam mold, and a plurality of pouring openings are formed in the top mold and used for pouring concrete; the inner side die is in contact connection with the side wall of the supporting pile, wherein a pile space is formed among two adjacent supporting piles, the soil layer and the inner side die;

the support assembly is arranged below the waist beam mold corresponding to the empty space between piles and comprises a base, a telescopic support arranged on the base, a support frame arranged at the top of the telescopic support and a support module arranged at the top of the support frame, wherein the support module extends from the bottom of the waist beam mold to the soil layer, the support module comprises a plurality of support plates which are mutually spliced, a first splicing part and a second splicing part are respectively formed on two sides of each support plate, and the first splicing part and the second splicing part are spliced in a matched manner to integrally connect a plurality of adjacent support plates.

2. The wale support structure of claim 1, wherein,

one side of the anchor rod, which extends out of the outer side die, is fixed through an anchor, and a bearing plate is arranged between the anchor and the outer side die.

3. The wale support structure of claim 1, wherein,

the top die is fixedly connected to the support pile through a right angle corner connector, the right angle corner connector is fixedly connected with the support pile through a first fastener and the top die, and the inner die is fixedly connected with the support pile through a second fastener.

4. The wale support structure of claim 1, wherein,

the horizontal direction of the bottom of the waist beam mold is also provided with a supporting rib, and the supporting rib is fixed on the supporting pile.

5. The wale support structure of claim 1, wherein,

the top surface of the support frame is also provided with a plurality of brackets with openings facing the support plate, and the brackets correspond to the plugging positions of the first plugging part and the second plugging part.

6. The wale support structure of claim 1, wherein,

an included angle is formed between the bottom die and the horizontal plane, the included angle is consistent with the included angle between the anchor rod and the horizontal plane, and the included angle between the outer die and the anchor rod is 90 degrees.

7. The wale support structure of claim 1, wherein,

the anchor rod outside is provided with soft sleeve, is located outside the anchor rod in the stake void area still cup joints the steel sleeve, steel sleeve one end lock-in to in the anchor rod hole, the other end lock-in the waist rail mould, steel sleeve with cup joint pour grout between the soft sleeve in the anchor rod outside.

8. The wale support structure of claim 1, wherein,

the inner side die, the outer side die, the top die and the bottom die of the waist beam die are manufactured and formed by one-time pultrusion or bending welding, and a plurality of waist beam dies are connected end to end through sleeves.

9. A construction method including the wale support structure as claimed in any one of claims 1 to 8, comprising the steps of:

6) Removing the support component below the waist beam mold;