JPH03161627A - Construction technique of post half pca form - Google Patents

Abstract

PURPOSE:To install the post half PCa forms of an upper stair accurately by adjusting the state of construction by a building adjusting bolt and a level adjusting bolt in the post half PCa forms in the periphery of reinforcing bars for the upper stair and connecting upper and lower post half PCa forms. CONSTITUTION:Deflection is prevented by a temporarily installed strut 2, a prefabricated girder reinforcing bar 1 is mounted, a slab half PCa board 7 is built, and the assembly work of forms required is conducted. Post half PCa forms 13 and wall PCa members 14 are assembled around reinforcing bars 12, which are pressure-welded and extended, for an upper stair. The upper and lower post half PCa forms 13 are connected while adjusting the state of construction of the level, etc. of the post half PCa forms 13 by building adjusting bolts 15 and level adjusting bolts 16. The post half PCa forms 13 are fixed to the assembling sections of the post half PCa forms 13 and the wall PCa members 14 while regulating the state of assembly by building-in adjusting bolts 17. Accordingly, the post half PCa forms of the upper stair can be installed accurately.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field 1] The present invention relates to a construction method for half-column PCa formwork, which is erected particularly when constructing a reinforced concrete building or a steel-framed reinforced concrete building.

[Jubei no Fujutsu J Jubei, when constructing a column and half PCa formwork, after pouring cast-in-place concrete into the column and half PCa formwork on the lower floor, it is necessary to install the column and half PCa formwork on the upper floor. I was checking the level etc.

[Problem to be solved by the invention] However, in the above-mentioned construction method, half of the columns on the lower floor PCa
Since it is not possible to install the half-PCa formwork for the columns on the upper floor unless concrete is poured into the formwork, work such as assembling reinforcing bars on the upper floor will be done after work on the lower floor, which will shorten the construction period. In addition, there were other problems such as poor waterproofness.

The present invention was made in order to solve the above-mentioned problem of lamination, and its purpose is to shorten the construction period by performing reinforcing bar assembly work on the upper floor and formwork work on the lower floor in parallel. To provide a construction method for half-column PCa formwork, which not only enables construction but also improves workability.

-T-Step 1 To solve problem I9, the construction method of the company '4' PCa formwork in this study is to construct the 12th floor building on top of the company'1'-PCa formwork on the lower floor. Rod half P
I: In the royal method of building Ca formwork, both pillars and half pCaIjl
The feature is that a height adjustment bolt is provided between each frame to adjust the height of the height, and the height of the height can be adjusted by installing a height adjustment bolt between the frames. 1
, Bonoleto 1 and 2 climbing structures, the height, ¥8! Installing the upper floor's ヰL and a half ■) σmi゜1 frame by adjusting the bolts? = 'L' is set and then the upper and lower bills are connected by connecting bolts.
C a It is characterized by connecting formwork.

Another feature is that a level I1ll adjustment bolt is provided between the two pillars and half of the PCa sacred frame of the stand, which are separated from the adjustment bolt.

(Example 1) Hereinafter, an example of the present invention will be explained with reference to a flash surface.

In the first factor, 1 is a prefabricated beam steel sieve attached in the span direction, and a temporary support 2 is built under it to prevent the prefabricated beam reinforcing bar 1 from deflecting.

The temporary supports 2 are arranged within the wall between the doors and are buried within the wall. As shown in detail in Fig. IA, the temporary support 2 has a frame 3 made of Yamanashi W4 or the like attached to the top of the support 2', and the upper end sieve 18 of the prefabricated iron beam ll'b 1 is attached to the top of the support 2'. I support it. A bracket 4 is attached to the side wall of the frame 3, and is adapted to receive a semi-rub PCa plate, which will be described later.
The base 2a of the column 2' is adapted to be anchored in concrete slab. In addition, an insertion rod 21) is provided at the upper end of the support column 2', so that the base 2a of the upper floor support +h2'' can be inserted and added to this. It has become. In addition, an insertion rod 2C is provided on the lower side of the frame 3, and a pipe column is inserted into the rod 2C.
' may also be configured.

When the installation of the prefabricated beam reinforcing bars 1 is completed, as shown in FIG. 2, the door boundary wall reinforcing bars 5 on which the above-mentioned Vi installation supports 2 are arranged are arranged. In addition, slab supports 6 will be temporarily installed in the hallway and balcony portions as necessary.

Next, as shown in Figure 3, erect the half-slab PCa board. This erection work is carried out by having the end of the half-slab PCa board 7 received by the bracket 4 of the temporary branch office 2, as shown in FIG. 3A. The temporary support 2 is designed to receive only the load of the half-slab PCa board, and when pouring concrete is placed, a support 8 is installed under the half-slab PCa board 7 for support.

When the erection of the half-slab PCa board 7 is completed, on the r side, beam formwork 9 and wall formwork 10 are assembled on both sides of the prefabricated beam reinforcing bars 1 and temporary support columns 2 (see Fig. 3A). Further, as shown in FIG. 3, a half-PCa board 11 is set on the support 6 of the hallway and part of the balcony. Furthermore, the column reinforcements 12 for the upper floor are pressed and added.

Moreover, on the upper side of the constructed slab half-PCa board 7, as shown in FIG.
Assemble form a 13 and wall PCa member 14. Fourth
As shown in Figures A and 4B in detail, the level of the half-column PCa formwork 13 can be adjusted using the erection adjustment bolts 15 and level adjustment bolts 16.
! While aligning, connect the upper and lower column and half PCa formwork 13.

The height of the built-in adjustment port 15 is ml, as shown in enlarged view in FIGS. 4A' (A) and (B). + Set the installation height in advance with the adjustment bolt 15a, and then connect the connecting bolt} 1 5
b connects the upper and lower column half-PCa formwork 13. Furthermore, the column half-PCa formwork 13 and the wall PCa member 14 are assembled and fixed at the assembly portion using built-in adjustment bolts 17 while adjusting the assembly state. In addition, as shown in FIG. 4B, by making an opening 13a in the column half-PCa formwork 13,
Integrate the door boundary walls in the span direction with cast-in-place concrete. Furthermore, a beam formwork 19 is assembled around the beam reinforcing bars 18 in the beam direction.

Next, as shown in Figure 5, the upper floor plank beam reinforcement 1
At the same time, it is supported by temporary supports 2, and the slab is distributed on one side of the slab half PCa board 7, and on the slab half PCa board 7, inside the east formwork 9, and the wall formwork 10.
At the same time, cast-in-place concrete 20 is poured into the inner J5 pillar and inside the PCa formwork 13 (Fig. 6).

In addition, in the embodiment described in -1-4, a slab PCa board was constructed, but the present invention is not limited to this, and a slab PCa board may be used.

Further, although the door boundary wall in 11 was constructed using cast-in-place concrete, the wall formwork on one side may be made into a wall half-PCn part 21, as shown in Fig. 7.

[Effect of the invention 1: The lower floor Pcu formwork is connected to the upper floor column j' PC a
Δl (in the royal method of connecting frames, both pillars t-P C aQ
,"Insert it between the frames, install 1!l maintenance bolts, and install it.
Please adjust the height of the computer on the office floor.
Not only can formwork a be installed with good coverage, concrete can be poured into the frame at the same time and integrated, and it has good waterproof properties.

[Brief explanation of the drawing]

The ffil diagram is a construction explanatory diagram showing the state of erection of the beam prefabricated iron sieve that goes up the temporary support, the ffilA diagram is a detailed diagram of the installation of the beam prefabricated iron sieve by the temporary branch, Figure 2 is the wall reinforcement diagram, and Figure 3 is the slab. A construction explanatory diagram showing the erection of a half-PCa board, etc., Figure 3A is a detailed diagram of the erection state, Figure f54 is an explanatory diagram of installation of the column PCa members, etc., Figure 4A is a detailed diagram of the installation of the column PCa member, Figure 4A 'Figures (A) and (B) are the installation adjustment bolts ffl! 4B is the side view and top view of 4B.
- B+: Cross-sectional view along the line, Figure 5 is a construction explanation of the prefabricated steel beams on the upper floor being erected, Figure 6 is a construction explanation of cast-in-place concrete 1, Figure 7 is the beam in the span direction It is a sectional view showing another example of the wall construction method. 1... Prefabricated beam beam, 1a... upper end group, 11).
... Lower end sieve, 2 ... Temporary support, 2'. 2"...Strut, 2a...Base, 3...71/-m, 4...-Bracket/To, 5...Boundary wall ironwork, 6...Matarab shoring,
7...Slab half PCa board, 8...Support, 9...
・Beam formwork, 10... Wall formwork, 11... Half PCa board,
12-・Column reinforcement, 1 3-・Column half PCa formwork, 13a・
...Opening, 14...'lPCa material, 15...Erection adjustment bolt, 15a...Height adjustment bolt, 15[+
...Connection bolt, 16...Level adjustment bolt, 17.
...Erection adjustment bolt, 18...Beam reinforcing bar, 19...
・Beam formwork, 20...cast-in-place concrete,

Claims (1)

[Claims] 1. Upper floor column half PC_a on top of the lower floor column half PC_a formwork
A method for erecting column and half PC_a formwork, characterized in that a erecting adjustment bolt is provided between both column and half PC_a formworks to adjust the erecting height. 2. The above-mentioned construction adjustment bolt is composed of a height adjustment bolt and a connecting bolt, and the height adjusting bolt sets the installation height of the upper floor column half PC_a formwork, and then the connecting bolt is used to adjust the height of the upper and lower columns. 2. The erection method for column and half PC_a formwork according to claim 1, characterized in that the column and half PC_a formwork are connected. 3. Both column half P located away from the above construction adjustment bolt
3. The construction method for half-column PC_a formwork according to claim 1 or 2, characterized in that a level adjustment bolt is provided between the C_a formworks.