CN109898521A - A kind of anchored pile supporting and construction method for foundation pit external corner - Google Patents
A kind of anchored pile supporting and construction method for foundation pit external corner Download PDFInfo
- Publication number
- CN109898521A CN109898521A CN201910282071.8A CN201910282071A CN109898521A CN 109898521 A CN109898521 A CN 109898521A CN 201910282071 A CN201910282071 A CN 201910282071A CN 109898521 A CN109898521 A CN 109898521A
- Authority
- CN
- China
- Prior art keywords
- foundation pit
- campshed
- external corner
- prestress anchorage
- anchorage cable
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010276 construction Methods 0.000 title claims abstract description 36
- 239000002689 soil Substances 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 9
- 238000009412 basement excavation Methods 0.000 claims description 16
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000004567 concrete Substances 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 238000005553 drilling Methods 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 230000010412 perfusion Effects 0.000 claims description 3
- 239000011378 shotcrete Substances 0.000 claims description 3
- 239000002344 surface layer Substances 0.000 claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 3
- 229910052742 iron Inorganic materials 0.000 claims 1
- 230000011218 segmentation Effects 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 4
- 238000004873 anchoring Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009440 infrastructure construction Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Landscapes
- Foundations (AREA)
Abstract
本发明公开了一种用于基坑阳角的桩锚支护结构及施工方法，所述的结构包括冠梁、排桩、对拉预应力锚索和腰梁，所述的排桩沿基坑阳角的两侧坑壁布设，排桩顶部与冠梁相连接，排桩腰部与腰梁相连接；所述的对拉预应力锚索水平安装在基坑阳角内、对拉预应力锚索的两端分别与基坑阳角两侧的腰梁连接，对拉预应力锚索与基坑阳角两侧的腰梁组成等腰三角形。本发明是通过对拉预应力锚索对所支护基坑的阳角土体施加预应力，避免了传统的基坑阳角桩锚支护结构中的锚索交叉以及危及浅基础建筑物的稳定性等问题，更加安全可靠。本发明通过采取对拉预应力锚索的桩锚支护结构，节省了传统锚索支护中锚固段材料，降低了造价，简化了施工工序。
The invention discloses a pile-anchor support structure and a construction method for the outside corner of a foundation pit. The pit walls are arranged on both sides of the pit Yang angle, the top of the row piles is connected with the crown beam, and the row pile waist is connected with the waist beam; The two ends of the anchor cable are respectively connected with the waist beams on both sides of the external corner of the foundation pit, and the tension prestressed anchor cable and the waist beams on both sides of the external corner of the foundation pit form an isosceles triangle. The present invention applies prestress to the soil body at the outer corner of the supported foundation pit by pulling the prestressed anchor cable, thereby avoiding the crossing of the anchor cable in the traditional foundation pit outer corner pile anchor supporting structure and the danger of endangering the shallow foundation buildings. Stability and other issues, more secure and reliable. By adopting the pile-anchor support structure of the tension prestressed anchor cable, the invention saves the material of the anchoring section in the traditional anchor cable support, reduces the cost and simplifies the construction process.
Description
Technical field
The invention belongs to geotechnical engineering fields, are related to a kind of anchored pile supporting and construction party for foundation pit external corner
Method.
Background technique
In recent years, with the high speed development of China's modernization construction, great success is achieved in terms of infrastructure construction.One
A little heavy constructions are rised sheer from level ground.Many buildings have 1-3 layers of basement or underground garage, therefore corresponding excavation of foundation pit depth
All very big, the safety problem of foundation pit causes extensive concern.Especially for the external corner of foundation pit, due to self structure problem,
Institute's bearing load is bigger, it is easier to collapse.Therefore, how to better ensure that the soil body safety at foundation pit external corner, become
It obtains more and more important.It is traditionally used for the piled anchor structure of foundation pit external corner supporting at present, since all to need drilling to squeeze into pre- for two sides crater wall
There are the anchor cable quantity of consuming is more, and there is anchor cable intersection in stress anchor cable；Especially when the foundation pit sun of required supporting
When angle is adjacent to shallow foundation building, traditional pile-anchor retaining method can generate very big shadow to the stability of shallow foundation building
It rings, or even shallow foundation building is damaged.
In consideration of it, anchor cable issuable for traditional anchored pile supporting intersects and influences shallow foundation structure stability
The problem of, it needs to invent a kind of novel anchored pile supporting for foundation pit external corner at present.
Summary of the invention
To solve the above problems existing in the prior art, the present invention, which will design, a kind of can improve foundation pit external corner general safety
Property, save material and reduce cost the anchored pile supporting and construction method for foundation pit external corner.
To achieve the goals above, technical scheme is as follows: a kind of anchored pile supporting for foundation pit external corner,
Including crown beam, campshed, to drawing prestress anchorage cable and waist rail, two sides crater wall laying of the campshed along foundation pit external corner, campshed top
Portion is connected with crown beam, and campshed waist is connected with waist rail；It is described to draw prestress anchorage cable to be horizontally arranged in foundation pit external corner,
The both ends for drawing prestress anchorage cable are connect with the waist rail of foundation pit external corner two sides respectively, to drawing prestress anchorage cable and foundation pit external corner two sides
Waist rail form isosceles triangle.
Further, described that the both ends for drawing prestress anchorage cable are fixedly connected with anchorage respectively, anchorage and waist rail it
Between wedge and cushion block, the wedge and cushion block are set are bolted on waist rail.
Further, it is equidistant between adjacent campshed and campshed.
Further, described a plurality of to drawing prestress anchorage cable to have, it is a plurality of that drawing prestress anchorage cable is arranged in parallel.
Further, the waist rail has a plurality of, uniformly distributed along campshed up and down direction.
Further, the anchorage includes anchor head, wedge and cushion block, be arranged between the anchor head and waist rail wedge and
Cushion block.
A kind of construction method of the anchored pile supporting for foundation pit external corner, includes the following steps:
A, campshed is constructed
Before being excavated to foundation pit external corner, first construct to Row Piles Supporting Structure:
Place cleaning measures positioning, setting-out to campshed stake holes；According to the stake position construction campshed determined: setting up stake
Machine, installation piling machine are mobile in place, hang stake, pitching pile, hammering sinkings, pile extension, hammering to projected depth, pile sinking completion, in steel-pipe pile
Concrete perfusion.
B, crown beam is constructed
Crown beam is the reinforced beam of horizontal layout, and the top of each campshed is fastenedly connected with crown beam to be integrated.Into
Before the construction of row crown beam, absolute altitude measures campshed stake top as required, and all absolute altitudes exceed campshed of the requirement other than 10cm all
Carry out chisel pile crown work, it is ensured that the pile crown dug out is smooth；It digs stake after hours, starts to carry out crown beam construction；Crown beam construction point
Duan Jinhang, directly mold is made in grooving in soil；Ensure that unwrapping wire is accurate in construction, die wall is straight, and Molded Depth is consistent, is poured laggard
Row maintenance.
C, excavation of foundation pit
After having excavation of foundation pit condition, the excavation of foundation pit external corner is vertically carried out along campshed, and beat into inter-pile soil soil nailing,
Steel mesh and gunite concrete surface layer are hung, foundation pit external corner crater wall surface is arranged drainage hole, does rubble loaded filter after drainage hole.Successively
It excavates, is completed until excavating.
D, to drawing construction prestressed cable
Excavation of foundation pit carries out wanting according to design to construction prestressed cable is drawn to below to drawing prestress anchorage cable projected depth
It asks and carries out to drawing prestress anchorage cable line setting；It is carried out to prestress anchorage cable drilling is drawn, before drilling in advance using armature boring machine
Production will be inserted into anchor cable hole to drawing prestress anchorage cable to prestress anchorage cable is drawn.
E, waist rail is installed
Waist rail is placed on predetermined position, anchorage is installed.
F, to drawing prestressed anchor cable stretching
The one end for drawing prestress anchorage cable will be first fixedly connected with anchor head, wedge and pad are set between anchor head and waist rail
Block, then to drawing the prestress anchorage cable other end to carry out tensioning, the tensioning of drawing prestress anchorage cable is used based on Stress Control, is stretched
Method supplemented by long amount.Until reaching design lock value, stop tensioning.
G, terminate
C is gone to step, continues vertically to carry out next stage excavation along campshed, until completing to the pile-anchor retaining for drawing prestress anchorage cable
The construction of structure.
H, it recycles
It is backfilled after the completion of main structure construction, when being backfilled to anchorage position from bottom to top, dismantles anchorage, extracted steel and twist
Line.
Compared with prior art, the invention has the advantages that
1, safe and reliable: the present invention is by being answered in advance the external corner soil body application of institute's supporting foundation pit drawing prestress anchorage cable
Power avoids the stability etc. that the anchor cable in traditional foundation pit external corner anchored pile supporting intersects and jeopardize shallow foundation building
Problem, more securely and reliably.
2, material saving low price: the invention is characterized in that the anchored pile supporting for drawing prestress anchorage cable, traditional anchor cable is saved
Anchoring section material in supporting, reduces cost.
3, reduce process: the present invention is due to reducing a large amount of brill using to the anchored pile supporting for drawing prestress anchorage cable
Hole work, it is often more important that eliminate anchoring section, simplify working procedure.
4, recycling is convenient: after the completion of to be onstructed, can carry out disassembly & recycling, simple side when carrying out backfill to anchor head structure
Just.
Detailed description of the invention
Fig. 1 is the schematic diagram of structure of the invention.
Fig. 2 is the general layout schematic diagram of Fig. 1.
Fig. 3 is partial enlarged view at the A of Fig. 2.
Fig. 4 is the anchor cable face sectional view of structure of the invention.
Fig. 5 is the inter-pile soil supporting elevation of structure of the invention.
In figure: 1, crown beam；2, campshed；3, to drawing prestress anchorage cable；4, waist rail；5, anchor head；6, building；7, anchorage；8,
Wedge；9, cushion block；10, soil nailing；11, drainage hole；12, steel mesh；13, concrete topping.
Specific embodiment
The present invention is further described through with reference to the accompanying drawing.As shown in Figs. 1-5, a kind of stake for foundation pit external corner
Anchor supporting construction, including crown beam 1, campshed 2, to prestress anchorage cable 3 and waist rail 4 is drawn, the campshed 2 is along the two sides of foundation pit external corner
Crater wall is laid, and 2 top of campshed is connected with crown beam 1, and 2 waist of campshed is connected with waist rail 4；It is described to drawing prestress anchorage cable 3
It is horizontally arranged in foundation pit external corner, the both ends for drawing prestress anchorage cable 3 is connect with the waist rail 4 of foundation pit external corner two sides respectively, to drawing
Prestress anchorage cable 3 and the waist rail 4 of foundation pit external corner two sides form isosceles triangle.
Further, described that the both ends for drawing prestress anchorage cable 3 are fixedly connected with anchorage 5 respectively, in anchorage 5 and waist rail
Wedge 8 is set between 4 and cushion block 9, the wedge 8 and cushion block 9 are bolted on waist rail 4.
Further, it is equidistant between adjacent campshed 2 and campshed 2.
Further, described a plurality of to drawing prestress anchorage cable 3 to have, it is a plurality of that drawing prestress anchorage cable 3 is arranged in parallel.
Further, the waist rail 4 has a plurality of, uniformly distributed along 2 up and down direction of campshed.
Further, the anchorage 5 includes anchor head 7, wedge 8 and cushion block 9, is arranged between the anchor head 7 and waist rail 4
Wedge 8 and cushion block 9.
A kind of construction method of the anchored pile supporting for foundation pit external corner, includes the following steps:
A, campshed 2 is constructed
Before being excavated to foundation pit external corner, first construct to 2 supporting construction of campshed:
Place cleaning measures positioning, setting-out to campshed stake holes；According to the stake position construction campshed 2 determined: setting up stake
Machine, installation piling machine are mobile in place, hang stake, pitching pile, hammering sinkings, pile extension, hammering to projected depth, pile sinking completion, in steel-pipe pile
Concrete perfusion.
B, crown beam 1 is constructed
Crown beam 1 is the reinforced beam of horizontal layout, and the top of each campshed 2 is fastenedly connected with crown beam 1 to be integrated.?
Before carrying out the construction of crown beam 1, absolute altitude measures campshed stake top as required, and all absolute altitudes are beyond the campshed required other than 10cm
2 all carry out chisel pile crown work, it is ensured that the pile crown dug out is smooth；It digs stake after hours, starts to carry out the construction of crown beam 1；Crown beam 1 is applied
Work point section carries out, and directly mold is made in grooving in soil；Ensure that unwrapping wire is accurate in construction, die wall is straight, and Molded Depth is consistent, is poured
After conserved.
C, excavation of foundation pit
After having excavation of foundation pit condition, the excavation of foundation pit external corner is vertically carried out along campshed 2, and soil nailing is beaten into inter-pile soil
10, steel mesh 12 and gunite concrete surface layer 13 are hung, foundation pit external corner crater wall surface is arranged drainage hole 11, does rubble after drainage hole 11
Loaded filter.It successively excavates, is completed until excavating.
D, it constructs to drawing prestress anchorage cable 3
Excavation of foundation pit is carried out to below to drawing 3 projected depth of prestress anchorage cable to drawing prestress anchorage cable 3 to construct, according to design
It is required that carrying out to drawing 3 line setting of prestress anchorage cable；Drill to drawing prestress anchorage cable 3 using armature boring machine, before drilling
It is made in advance to prestress anchorage cable 3 is drawn, anchor cable hole will be inserted into drawing prestress anchorage cable 3.
E, waist rail 4 is installed
Waist rail 4 is placed on predetermined position, anchorage 5 is installed.
F, to drawing 3 tensioning of prestress anchorage cable
The one end for drawing prestress anchorage cable 3 will be first fixedly connected with anchor head 7, wedge 8 is set between anchor head 7 and waist rail 4
With cushion block 9, then to draw 3 other end of prestress anchorage cable carry out tensioning, to draw prestress anchorage cable 3 tensioning use with Stress Control
Based on, the method supplemented by elongation.Until reaching design lock value, stop tensioning.
G, terminate
C is gone to step, continues vertically to carry out next stage excavation along campshed 2, until completing to the piled anchor branch for drawing prestress anchorage cable 3
The construction of protection structure.
H, it recycles
It is backfilled after the completion of main structure construction, when being backfilled to 5 position of anchorage from bottom to top, dismantles anchorage 5, extract steel
Twisted wire.
Foundation pit shown in FIG. 1 is located near building 6, by abovementioned technology, ensure that the stabilization of supporting construction
Property and safety, improve integer support structural strength, realize the stable purpose of foundation pit external corner.
The present invention is not limited to the present embodiment, any equivalent concepts within the technical scope of the present disclosure or changes
Become, is classified as protection scope of the present invention.
Claims (7)
1. a kind of anchored pile supporting for foundation pit external corner, it is characterised in that: including crown beam (1), campshed (2), answered in advance drawing
Power anchor cable (3) and waist rail (4), the campshed (2) are laid along the two sides crater wall of foundation pit external corner, campshed (2) top and crown beam (1)
It is connected, campshed (2) waist is connected with waist rail (4)；Described is horizontally arranged at foundation pit external corner to drawing prestress anchorage cable (3)
It is interior, to draw prestress anchorage cable (3) both ends connect respectively with the waist rail (4) of foundation pit external corner two sides, to draw prestress anchorage cable (3) and
The waist rail (4) of foundation pit external corner two sides forms isosceles triangle.
2. a kind of anchored pile supporting for foundation pit external corner according to claim 1, it is characterised in that: described to drawing
The both ends of prestress anchorage cable (3) are fixedly connected with anchorage (5) respectively, between anchorage (5) and waist rail (4) be arranged wedge (8) and
Cushion block (9), the wedge (8) and cushion block (9) are bolted on waist rail (4).
3. a kind of anchored pile supporting for foundation pit external corner according to claim 1, it is characterised in that: adjacent campshed
(2) it is equidistant between campshed (2).
4. a kind of anchored pile supporting for foundation pit external corner according to claim 1, it is characterised in that: described to drawing
Prestress anchorage cable (3) have it is a plurality of, it is a plurality of to draw prestress anchorage cable (3) be arranged in parallel.
5. a kind of anchored pile supporting for foundation pit external corner according to claim 1, it is characterised in that: the waist rail
(4) have a plurality of, along campshed (2), up and down direction is uniformly distributed.
6. a kind of anchored pile supporting for foundation pit external corner according to claim 1, it is characterised in that: the anchorage
(5) include anchor head (7), wedge (8) and cushion block (9), wedge (8) and cushion block are set between the anchor head (7) and waist rail (4)
(9)。
7. a kind of construction method of the anchored pile supporting for foundation pit external corner, characterized by the following steps:
A, campshed (2) is constructed
Before being excavated to foundation pit external corner, first construct to campshed (2) supporting construction:
Place cleaning measures positioning, setting-out to campshed stake holes；It constructs campshed (2) according to the stake position determined: setting up stake
Machine, installation piling machine are mobile in place, hang stake, pitching pile, hammering sinkings, pile extension, hammering to projected depth, pile sinking completion, in steel-pipe pile
Concrete perfusion；
B, crown beam (1) is constructed
Crown beam (1) is the reinforced beam of horizontal layout, and the top of each campshed (2) is fastenedly connected with crown beam (1) to be integrated；
Before carrying out crown beam (1) construction, absolute altitude measures campshed stake top as required, and all absolute altitudes are beyond requirement other than 10cm
Campshed (2) all carries out chisel pile crown work, it is ensured that the pile crown dug out is smooth；It digs stake after hours, starts progress crown beam (1) and apply
Work；Crown beam (1) construction segmentation carries out, and directly mold is made in grooving in soil；Ensure that unwrapping wire is accurate in construction, die wall is straight, Molded Depth
Unanimously, it is conserved after being poured；
C, excavation of foundation pit
After having excavation of foundation pit condition, the excavation of foundation pit external corner is vertically carried out along campshed (2), and soil nailing is beaten into inter-pile soil
(10), steel mesh (12) and gunite concrete surface layer (13) are hung, drainage hole (11) are arranged in foundation pit external corner crater wall surface, drainage hole
(11) rubble loaded filter is done after；It successively excavates, is completed until excavating；
D, to drawing prestress anchorage cable (3) construction
Excavation of foundation pit is carried out to below to drawing prestress anchorage cable (3) projected depth to drawing prestress anchorage cable (3) to construct, according to design
It is required that carrying out to drawing prestress anchorage cable (3) line setting；Bore to prestress anchorage cable (3) drilling is drawn using armature boring machine
It is made in advance before hole to prestress anchorage cable (3) are drawn, anchor cable hole will be inserted into drawing prestress anchorage cable (3)；
E, waist rail (4) is installed
Waist rail (4) is placed on predetermined position, is installed anchorage (5)；
F, to drawing prestress anchorage cable (3) tensioning
The one end for drawing prestress anchorage cable (3) will be first fixedly connected with anchor head (7), is arranged between anchor head (7) and waist rail (4) oblique
Iron (8) and cushion block (9), then to drawing prestress anchorage cable (3) other end to carry out tensioning, the tensioning for drawing prestress anchorage cable (3) is adopted
To based on Stress Control, the method supplemented by elongation；Until reaching design lock value, stop tensioning；
G, terminate
C is gone to step, continues vertically to carry out next stage excavation along campshed (2), until completing to the piled anchor branch for drawing prestress anchorage cable (3)
The construction of protection structure；
H, it recycles
It is backfilled after the completion of main structure construction, when being backfilled to anchorage (5) position from bottom to top, dismantles anchorage (5), extract steel
Twisted wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910282071.8A CN109898521A (en) | 2019-04-09 | 2019-04-09 | A kind of anchored pile supporting and construction method for foundation pit external corner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910282071.8A CN109898521A (en) | 2019-04-09 | 2019-04-09 | A kind of anchored pile supporting and construction method for foundation pit external corner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109898521A true CN109898521A (en) | 2019-06-18 |
Family
ID=66954607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910282071.8A Pending CN109898521A (en) | 2019-04-09 | 2019-04-09 | A kind of anchored pile supporting and construction method for foundation pit external corner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109898521A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111749249A (en) * | 2020-07-23 | 2020-10-09 | 牛斌 | Building enclosure construction method for protecting existing building in foundation pit |
| CN112323822A (en) * | 2020-11-30 | 2021-02-05 | 中国电建集团福建省电力勘测设计院有限公司 | Pipe gallery foundation pit with tension and compression support |
| CN112627249A (en) * | 2020-12-07 | 2021-04-09 | 马鞍山钢铁建设集团有限公司 | Construction method for shallow foundation reinforcement |
| CN116464041A (en) * | 2023-04-24 | 2023-07-21 | 中铁一局集团市政环保工程有限公司 | Recyclable prestressed anchor cable and construction method |
| CN116791631A (en) * | 2023-08-15 | 2023-09-22 | 中冶成都勘察研究总院有限公司 | A distributed prestressing method to control the external angle deformation of foundation pits |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO943196L (en) * | 1993-08-31 | 1995-03-01 | Petroleo Brasileiro Sa | Foundation system for tensioning platform |
| CN204370417U (en) * | 2014-11-13 | 2015-06-03 | 昆明理工大学 | A kind of for base pit engineering external corner or the road place of going along with sb. to guard him to drawing cable bolting structure |
| CN204753602U (en) * | 2015-03-29 | 2015-11-11 | 郑州大学 | Subassembly is strutted to foundation ditch external corner position self -balancing |
| CN208201885U (en) * | 2018-05-03 | 2018-12-07 | 云南建投基础工程有限责任公司 | A kind of supporting construction at multiple external corners continuous in base pit engineering |
-
2019
- 2019-04-09 CN CN201910282071.8A patent/CN109898521A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO943196L (en) * | 1993-08-31 | 1995-03-01 | Petroleo Brasileiro Sa | Foundation system for tensioning platform |
| CN204370417U (en) * | 2014-11-13 | 2015-06-03 | 昆明理工大学 | A kind of for base pit engineering external corner or the road place of going along with sb. to guard him to drawing cable bolting structure |
| CN204753602U (en) * | 2015-03-29 | 2015-11-11 | 郑州大学 | Subassembly is strutted to foundation ditch external corner position self -balancing |
| CN208201885U (en) * | 2018-05-03 | 2018-12-07 | 云南建投基础工程有限责任公司 | A kind of supporting construction at multiple external corners continuous in base pit engineering |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111749249A (en) * | 2020-07-23 | 2020-10-09 | 牛斌 | Building enclosure construction method for protecting existing building in foundation pit |
| CN111749249B (en) * | 2020-07-23 | 2022-03-08 | 北京城建设计发展集团股份有限公司 | Building enclosure construction method for protecting existing building in foundation pit |
| CN112323822A (en) * | 2020-11-30 | 2021-02-05 | 中国电建集团福建省电力勘测设计院有限公司 | Pipe gallery foundation pit with tension and compression support |
| CN112323822B (en) * | 2020-11-30 | 2024-04-02 | 中国电建集团福建省电力勘测设计院有限公司 | Piping lane foundation ditch with pull-press support |
| CN112627249A (en) * | 2020-12-07 | 2021-04-09 | 马鞍山钢铁建设集团有限公司 | Construction method for shallow foundation reinforcement |
| CN116464041A (en) * | 2023-04-24 | 2023-07-21 | 中铁一局集团市政环保工程有限公司 | Recyclable prestressed anchor cable and construction method |
| CN116464041B (en) * | 2023-04-24 | 2023-10-03 | 中铁一局集团市政环保工程有限公司 | Recyclable prestressed anchor cable and construction method |
| CN116791631A (en) * | 2023-08-15 | 2023-09-22 | 中冶成都勘察研究总院有限公司 | A distributed prestressing method to control the external angle deformation of foundation pits |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105840207B (en) | Construction method for comprehensive tunnel entering structure of large-span tunnel penetrating shallow-buried bias-pressure loose accumulation body | |
| CN104612162B (en) | A kind of Deep Foundation Pit of Metro Stations excavation construction method | |
| CN104264688B (en) | Manually digging hole non-uniform pile support construction process | |
| CN109898521A (en) | A kind of anchored pile supporting and construction method for foundation pit external corner | |
| CN105064397B (en) | Open excavation construction method for expanding excavation of station on metro interzone shield tunnel foundation | |
| CN105003272A (en) | Reversed construction method for expanding and excavating stations on sectional shield tunnel foundations of subways | |
| CN106013171B (en) | A kind of semi-rigid supporting construction semi-flexible and method of deep-foundation side wall | |
| CN106759376A (en) | Anchored Sheet Pile Wall for Excavation system and its construction method for closing on existing underground structure | |
| CN111560962A (en) | Backfill area foundation pit supporting structure and construction method thereof | |
| CN210712863U (en) | Foundation pit support structure | |
| CN206034454U (en) | Supporting construction | |
| CN104294769B (en) | A kind of piling and the construction method increasing the built bridge abutment structure of platform cap composite reinforcement | |
| CN103469803A (en) | Pile beam vertical anchor support system used for supporting foundation pit and construction method of pile beam vertical anchor support system | |
| CN102660955A (en) | Quick construction method for foundation pit slope support | |
| CN108914945A (en) | A kind of deep basal pit pile for prestressed pipe, prestress anchorage cable combined supporting construction method | |
| CN206599785U (en) | A kind of campshed anchor draws cement earth pile diaphragm wall supporting construction | |
| CN118273366A (en) | Construction process for construction of locking steel pipe pile cofferdam on abrupt slope hard rock riverbed | |
| CN207582471U (en) | A kind of Retaining Structure with Double-row Piles equipped with deep layer prestress anchorage cable | |
| CN111593735A (en) | A shaft structure and its construction method | |
| CN204097889U (en) | A kind of piling and the built bridge abutment structure of increase platform cap composite reinforcement | |
| CN115539052A (en) | Mechanical rapid construction method for super-large-span four-lane highway tunnel | |
| CN105586976A (en) | Method for carrying out foundation pit slope support by virtue of slope-ratio method as well as mixing piles and pre-stressed anchor cables | |
| CN105484270B (en) | Reinforcement protection construction method of high steep old rubble retaining wall adjacent to deep foundation pit | |
| CN105178355B (en) | The stratum pre-reinforcement processing method of underground space construction | |
| CN203498842U (en) | Pile beam vertical anchor supporting system used for foundation pit supporting |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190618 |