JPH03217559A - How to assemble beam reinforcements - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for assembling beam reinforcements when constructing large machine platform foundations, frames, underground beams for large buildings, and the like.

[Conventional technology]

Conventionally, when constructing beams for buildings made of reinforced concrete, the beam formwork is generally assembled by formwork erection work, and predetermined reinforcing bars such as top end reinforcement, bottom end reinforcement, stirrup, etc. are arranged within this beam formwork. , beam reinforcements are assembled by connecting them to slab reinforcements, column reinforcements, and beam reinforcements of other beams on which the beam rests. In the case of providing through holes in a beam or installing buried piping, the beam reinforcements are assembled on the beam form, the sleeves and piping are attached and fixed, and then the beam reinforcement is dropped into the beam form.

In addition, unlike general structures such as buildings and houses, when constructing large machine platform foundations, trestles, and underground beams for large buildings, the beam reinforcement assembly work is large-scale. First, a reinforcing bar pedestal and a reinforcement work scaffold are assembled in the beam construction area, and the reinforcing bars, such as the upper end reinforcement and lower end reinforcement, are lifted by a lifting machine such as a crane, and each is placed in a predetermined position and tied together by a reinforcing bar worker. After reinforcement is placed, processing is performed according to the purpose of the structure. For example, processes such as burying anchor bolts so that they are visible on the top of a beam, or attaching embedded hardware or sleeves are performed. The procedure was then to dismantle the reinforcement work scaffold and assemble the beam formwork.

[Problem to be solved by the invention]

However, in the case of large-scale beam construction as described above, a large number of steel workers and reinforcing bar workers are required to arrange the reinforcement, and each reinforcing bar is so heavy that it cannot be carried out by hand, so a lifting machine is required. Had to use it for a long time. Furthermore, there is the problem that work at high places at construction sites continues until various types of processing are completed, making it difficult to ensure safe work. There was also the problem that it took a considerable number of days to complete the beam reinforcement due to factors such as bringing in materials to the beam construction section and the progress of other sections.

Therefore, in the present invention, the beam reinforcements are assembled as independent units in an off-site assembly yard, that is, a place other than the construction work site, and the assembled beam reinforcement units are installed in the beam construction area, and the beam reinforcements are assembled on-site. The objective is to make it easier to assemble the beams, and to save labor in beam assembly work and shorten the time required for frame construction.

[Means to solve the problem]

The present invention has been made in consideration of the above-mentioned problems, and involves interconnecting a plurality of columns arranged in a plurality of rows in the longitudinal direction of a beam, and receiving a receiving member for receiving the upper end reinforcement of the beam and a receiving member for receiving the lower end reinforcement of the beam. A support frame with receiving materials in the width direction of the beam is assembled in an off-site construction yard, and reinforcing bars such as lower end reinforcement, upper end reinforcement, abdominal reinforcement, stirrup, etc. are set on the support frame in accordance with the span across which the beam is passed. After fixing the reinforcement and assembling the beam reinforcement unit, transporting the beam reinforcement unit to the beam construction department and installing it, the beam This completes the assembly of the striations and solves the above problem.

[For production]

In the present invention, the beam reinforcement unit is assembled separately from the construction work site in an off-site assembly yard, and the completed beam reinforcement unit is carried and installed in the beam construction department of the construction work site, and the reinforcement of the beam reinforcement UNISOTO is connected. This is done in an off-site assembly yard, that is, in a location different from the construction work site, where a support frame is first constructed to support the reinforcing bars, various types of reinforcing bars are arranged and fixed to this support frame, and then anchors are attached. The beam reinforcement unit is assembled by attaching bolts, sleeves, pipe materials such as electrical conduits, embedded hardware, etc., if necessary.

The beam reinforcement unit is assembled to correspond to all or a specified portion of the beam construction portion of the building to be constructed, and a plurality of beam reinforcement units are prepared. Each beam reinforcement unit is assembled to correspond to the situation of the beam construction part to be installed. In other words, as in the case where two beam reinforcement units are connected at right angles, the upper end reinforcement should be adjusted according to the installation procedure and situation so that one beam reinforcement unit does not become impossible to install due to the overlap between the two beam reinforcement units. There is also a beam reinforcement unit that is assembled without reinforcing the stirrup on the top side.

The beam reinforcement unit thus obtained is transported to a construction work site using means such as a truck, and is hung onto a beam construction section using a lifting machine or the like and installed. After installation, the beam reinforcement units are connected to existing reinforcement such as other beam reinforcement units and column reinforcements to complete the assembly of the beam reinforcements, and the building is completed through beam formwork assembly work and concrete pouring work. It will continue to be built.

〔Example〕

Next, the present invention will be explained in detail based on an example made when constructing a beam of a turbine frame shown in FIGS. 1 to 15. The turbine pedestal refers to the machine base on which the turbine and generator are installed, and is constructed of reinforced concrete.

Figure 1 shows the beam reinforcement unit 1 used when constructing the upper beam of the turbine frame, with the complete unit A being suspended between the columns in a span orthogonal to the span of the semi-B that has been installed. It is. In addition, a complete unit is a beam reinforcement unit that is completely assembled with the reinforcing bars set for the span, and a semi-unit is a beam reinforcement unit that is assembled by taking into account the installation of the complete unit and column reinforcement.
Of the reinforcing bars set for the span, some of the upper end reinforcement and stirrups are assembled on-site, and some of the abdominal reinforcement and lower end reinforcement are slid on-site.

Next, the second part showing the assembly procedure of the complete unit A mentioned above.
The beam reinforcement unit 1 will be explained with reference to the drawings that follow.

●Process 1 (Fig. 2) When assembling the beam reinforcement unit 1, as shown in Fig. 2, first, multiple beam reinforcements are placed at regular intervals in the longitudinal direction on a horizontal base concrete 2 in an off-site construction yard. mounts (same shape) 3 are arranged. The broken line a virtually indicates the space for assembling the gluteus muscle unit.

By pouring the base concrete 2 and arranging the same mounts 3, it is easy to level the mounts 3, and the lengths of the mounts 3 can be aligned in the beam width direction. By assembling a beam reinforcement unit, it is possible to install embedded hardware plates at the bottom of the beam and arrange stirrup reinforcement.

●Process 2 (Fig. 3) A pair of support columns 5 are placed on the above mount 3 via the base plate 4.
erected. A receiving member 6 for receiving the upper end reinforcement of the beam and a receiving member 7 for receiving the lower end reinforcement of the beam are installed in advance on the pair of pillars 5 so as to cross in the width direction of the beam, and a vertical place 8 is installed between the pillars. It is handed over, and the pillars 5 on each side
is assembled on the ground in advance, and is erected on the pedestal 3 by a lifting machine b.

A pair of struts 5, which are assembled together, are temporarily set up on a pedestal, and are tied together using, for example, wires, using framework scaffolding (not shown) assembled on both sides. Tighten and fix the base plate 4 and the pedestal 3 using a vise.

Note that the receiving members 6 and 7 are made of lightweight channel steel having a cross section of, for example. Further, the support column 5 is made of, for example, L-shaped steel, and is provided with the base plate 4 described above. Further, in order to improve assembly accuracy, all of the vertical places 8 are equipped with turn bars and barrels so that adjustments can be made smoothly.

Step 3 (Fig. 4) Attach and fix the horizontal splicing material 9 to each of the pillars 5 erected on the frame 3 in step 2 above by passing it in the longitudinal direction of the beam, so that they line up in the longitudinal direction of the beam. A vertical place 8 is placed between the pillars in the same manner as above, and a horizontal place 10 is placed on the upper and lower sides as well, and the support frame 1
Assemble 1. Thereafter, the process moves on to attaching predetermined reinforcing bars to this support frame 11.

Step 4 (Fig. 5) In this step 4, the lower end reinforcements (different diameter reinforcing bars) are arranged, and the lower end reinforcements 12 are suspended and slid by the lifting machine b to the lower end reinforcement receivers. Attach to material 7. As shown in FIG. 6, in order to secure the pinch of the lower end reinforcement 12, holes are drilled at a constant pitch in the lower end reinforcement receiving material 7, and the lower end reinforcement 12 is fixed thereto by tightening U bolts.

Step 5 (FIG. 7) Next, the abdominal reinforcement (different diameter reinforcing bars) 13 is attached and fixed from the bottom to the side of the support frame 11 in a sash-like manner so as to extend in the longitudinal direction of the beam. U-bolts are used in the attachment 4 of the abdominal muscles 13 as in step 4 above. In addition, a mouth-shaped stirrup 14 (different diameter reinforcing bar) is inserted from the mount side and tied and fixed to the horizontal joint material or lower end reinforcement.

Step 6 (Fig. 8) Attach an L-shaped stirrup (different diameter reinforcing bar) 15 to the side surface of the support frame 11, and add a width stopper (different diameter reinforcing bar) 16 to the support frame in the width direction of the beam. 11 from the inside and fix it.

Step 7 (FIG. 9) Upper end reinforcing bars (different diameter reinforcing bars) 17 extending from the upper surface side of the support frame 11 in the longitudinal direction of the beam are attached and fixed to the upper end reinforcing member 6. Similar to the fixation of the lower end reinforcement 12, this upper end reinforcement 17 is also fixed using U bolts.

Thereafter, the beam reinforcement unit 1 is assembled by hanging and fixing the star lamp 18 in the shape of [[] in the width direction of the beam from above the upper end reinforcement.

The beam reinforcement unit 1 is completed through the above steps 7. After this, hardware and other items set according to each beam are attached.

Process 8 (Figure 10) Depending on the beam to be constructed, processing is performed when piping is passed through or anchor bolts are required.

For example, in this complete unit} A, beam reinforcement unisoto 1
Anchor bolts 19 are attached to the upper surface of the sleeve 2o1, and embedded hardware such as the sleeve 2o1 embedded plate 21 and electric conduit 22 are attached at this point. Note that the anchor bolts and buried hardware are temporarily fixed so that their positions can be adjusted after the reinforcement unit is installed.

The next step is to attach a hanging jig so that the beam reinforcement unit can be transported and installed at a designated location.

Step 9 (FIG. 11) As shown in FIG. 11, a bridge member 23 having a cross section extending in the beam width direction is attached and fixed between the upper ends of the columns 5 (connected with bolts). Thereafter, as shown in FIG. 12, a hanging member 24 made of H-shaped steel is passed in the longitudinal direction of the beam so as to receive the connecting member 23, and the hanging member 24 and the connecting member 23 are fixed in a vise.

Further, a hanging piece 25 is fixed to a predetermined location on the upper surface of the hanging member 24 (see FIG. 13). These hanging jigs (hanging pieces, hanging materials, and crossing materials) will be removed all at once by cutting off the upper ends of the columns after the installation of the beam reinforcements is completed.

The base plate 4 and the pedestal 3 are fixed together using a vise, for example, as shown in FIG. 14, so that the pedestal can be removed when necessary.

The process described above shows the procedure for assembling a complete unit, but in the case of a semi-unit beam reinforcement unit, it is possible to use measures such as leaving the upper reinforcement in place without reinforcing it, or sliding the abdominal reinforcement on-site. The rest is assembled through the above steps.

FIG. 15 shows the transportation of the beam reinforcement unit 1. The beam reinforcement unit 1 assembled in the off-site assembly yard through the above process is
For example, it is transported to a construction site using a transportation means such as a trailer shown in FIG. 15. At this time, if the loading platform width is narrower than the unit width, the loading platform 3 is hung with the frame 3 attached. In addition, when the upper part of the beam reinforcement unit becomes heavy due to the attachment of hanging jigs and buried hardware, the unit may be transported with a frame attached as a weight to maintain balance. 26 indicates a fixing wire.

As shown in Fig. 1, the beam reinforcement units prepared in this way are hoisted onto each beam construction section by a lifting machine b.
After the installation is completed, the assembly of the beam reinforcements in the beam construction section is completed by connecting them to the reinforcing bars and column reinforcements of other beam reinforcement units (for example, semi-units). If the pedestal is attached during transportation, disconnect the base plate from the pedestal before hoisting the product.

FIG. 16 shows a turbine frame whose beams are constructed using a beam reinforcement unit, and the upper beam d and middle beam e of this turbine frame C use this beam reinforcement unit.

Although the above-described embodiments have been explained based on the construction of a turbine frame, the present invention is not limited thereto, and can be applied to the construction of other buildings.

〔Effect of the invention〕

As explained above, with the configuration of the present invention, it is possible to perform beam reinforcement work without considering the work process at a construction work site, and even after the beam reinforcement unit is installed, the beam reinforcement unit can be easily connected to other existing reinforcing bars. The reinforcing bars can now be assembled, which shortens the process of assembling the reinforcing bars by ground assembly, making it possible to shorten the period of frame work. In addition, the reinforcing steel labor process becomes uniform, making labor management easier. Furthermore, there is no need for scaffolding when assembling reinforcing bars in the beam construction section, making it easier to ensure work safety. Furthermore, the unit is assembled in a dedicated location, resulting in improved quality, which has excellent practical effects.

[Brief explanation of drawings]

The drawings show an embodiment of the method for assembling beam reinforcements according to the present invention, and FIG. 1 is an explanatory diagram showing the suspension of a beam reinforcement unit, FIG. 2 is an explanatory diagram showing the arrangement of a frame, and FIG. Figure 4 is an explanatory diagram showing the state in which the column is erected, Figure 4 is an explanatory diagram showing the horizontal joint material installed, Figure 5 is an explanatory diagram showing the reinforcement arrangement of the lower end reinforcement, and Figure 6 is the installation of the lower end reinforcement. An explanatory diagram showing the condition. Figure 7 is an explanatory diagram showing the state in which the abdominal muscles and bottom stirrup are attached. Figure 8 is an explanatory diagram showing the state in which the side stirrup and width stopper are attached. Figure 9 is an explanatory diagram showing the state in which the upper end reinforcement and stirrup on the top side are attached, Figure 10 is an explanatory diagram showing the state in which buried hardware etc. are attached, Figure 11 is an explanatory diagram showing the state in which the hanging jig is attached, Fig. 12 is an explanatory diagram showing the hanging material, Fig. 13 is an explanatory diagram showing the hanging piece, Fig. 14 is an explanatory diagram showing the fixing of the base plate to the pedestal, and Fig. 15 is an explanatory diagram showing an example of transporting the gluteus muscle unit. Figure, No. 16
The figure is an explanatory diagram showing a turbine mount. 1... Beam reinforcement unit 3... Frame 4... Base pallet 5... Support column 6, 7... Support material 11... ... Support frame 12 ... Lower end muscle 13 ... Abdominal muscle 14, 15.18 ... Stirrup 17 ...
...Top end reinforcement 19...Anchor bolt 23...Bridging material 24...Hanging material 25...Hanging piece A...Complete unit B・・・・・・Semi unit

Claims (1)

[Claims] A plurality of columns arranged in a plurality of rows in the longitudinal direction of the beam are interconnected, and a receiving member for receiving the upper end reinforcement of the beam and a receiving member for receiving the lower end reinforcement are provided in the width direction of the beam. A support frame is assembled in an off-site construction yard, and reinforcing bars such as lower end reinforcement, upper end reinforcement, abdominal reinforcement, stirrup, etc. set according to the span across which the beam is passed are arranged and fixed to the support frame to form a beam reinforcement unit. Assembling: A method for assembling beam reinforcements, comprising: transporting the beam reinforcement unit to a beam construction section and installing it, and then connecting each of the reinforcing bars on the end side of the beam reinforcement unit to the existing reinforcing bars.