JP2009299346A - Construction method of building - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a construction method of a building that can reduce a construction period without needing high lift work while preventing the building from becoming an unstable structure in the initial stage of construction. <P>SOLUTION: The construction method of the building includes placing the N-number of slabs 12-14 sequentially, then lifting the slabs 13, 14 other than the first slab up to predetermined positions with wires 24 through pulleys 21 mounted to the top parts of columns 2, temporarily fastening the respective slabs 13, 14 to the upper parts of the columns 2, lifting the first slab 12 with the wires 24, mounting one ends of braces 31 turnably to the lower face of the first slab 12, mounting rollable pulleys 23 with rollers to the other ends of the braces 31, pulling wires 25 wound on the pulleys 23 to push up the first slab 12 by the braces 31 to thereby lift the first slab 12 into a predetermined position, fixing the first slab 12 to the columns 2, and fixing the second to Nth slabs 13, 14 sequentially to the columns 2 in the same way. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a construction method for a building, and more specifically, after a roof slab and a floor slab are previously placed, the roof slab and the floor slab are sequentially fixed from a floor slab on a floor close to the ground, and the slab is rigidly attached to a column. It is related to the construction method of the building which touches.

  In a conventional method called a lift-up method, the roof slab and the floor slab are in rigid contact with the columns in sequence. First, a roof slab placed on the ground is lifted, and the roof slab is rigidly connected to a predetermined position of a pillar. Next, the floor slab on the uppermost floor placed on the ground is lifted, and the floor slab is rigidly connected to a predetermined position of the pillar. Hereinafter, the floor slab of the lower floor is lifted, and the floor slab is rigidly connected to a predetermined position of the pillar.

  In such a construction method, slabs are lifted in order from a high place, and construction is performed from the roof or upper floor, so that the building has an unstable structure against shaking at the initial stage of construction. In addition, at the initial stage of construction, high-place welding work is required for the rigid connection between the column and the slab. Therefore, there has been a demand for a construction method in which the building does not have an unstable structure at the initial stage of construction and does not require welding work at a high place.

  Moreover, since it takes time to cure the concrete after slab placement, a construction method that shortens the construction period has been required.

In the building construction method of the present invention, a frame is assembled on the foundation of a building on which a column is erected so that the column is on the outside, and a peeling member is laid in the frame, and the peeling is further performed. Placing a reinforcing member on the member, pouring the ready-mixed concrete into the mold, and placing a first slab comprising a hook hanging portion;
A mold is assembled on the first slab so that the pillar is on the outside, a peeling member is laid in the mold, and a reinforcing member is disposed on the peeling member. Pour concrete, repeat the process of placing the second slab with hooks at the four corners, place the first to Nth slabs,
A slab other than the first slab is lifted to a predetermined position by a wire via a pulley attached to the top of the column, each slab is temporarily fixed to the upper portion of the column, and the first slab is predetermined by the wire. And lift the first slab to the column,
Similarly, the second to Nth slabs are sequentially fixed to the column.
Building construction method.

In the building construction method of the present invention, a frame is assembled on the foundation of a building on which a column is erected so that the column is on the outside, and a peeling member is laid in the frame, and the peeling is further performed. Placing a reinforcing member on the member, pouring the ready-mixed concrete into the mold, and placing a first slab comprising a hook hanging portion;
A mold is assembled on the first slab so that the pillar is on the outside, a peeling member is laid in the mold, and a reinforcing member is disposed on the peeling member. Pour concrete, repeat the process of placing the second slab with hooks at the four corners, place the first to Nth slabs,
A slab other than the first slab is lifted to a predetermined position by a wire via a pulley attached to the top of the pillar, each slab is temporarily fixed to the upper part of the pillar, and the first slab is lifted by the wire. In addition, one end of the strut is rotatably attached to the lower surface of the first slab, a pulley with a roller capable of rolling is attached to the other end of the strut, a wire hung on the pulley is pulled, and the muscle The first slab is pushed up by a mistake and lifted to a predetermined position, and the first slab is fixed to the column,
Similarly, the second to Nth slabs are sequentially fixed to the column.

  First, according to the construction method of the present invention, the roof slab and the floor slab from the second floor to the highest floor can be placed in a short time, so that the construction period can be shortened. Furthermore, since the building is assembled from the lower floor, the building does not have an unstable structure at the initial stage of construction, and the construction method does not require welding work at a high place.

  According to the construction method of the present invention, construction can be performed with a light device and a small number of people, and a building can be constructed without using temporary materials.

  Hereinafter, the construction method according to the present invention will be described with reference to the drawings, taking a three-story building (N = 3) as an example. FIG. 1a is a top view of a building before placing a slab, FIG. 1b is an enlarged view of a part of the building, and FIG. 1c is a cross-sectional view taken along line AA of FIG. 1a. Pillars 2 are erected at the four corners of the foundation 1 of the building. A well-known method may be used as a method of standing the pillar 2. For example, as shown in FIG. 1 c, the foundation 2 can be formed by placing the pillar 2 on the base 100 laid with recycled crushed stone and then placing concrete to stand and fix the pillar 2. Further, as an example of the pillar 2, a pillar 2 reinforced with a diagonal member 2a called a truss pillar can be used, and a plurality of truss pillars are sequentially connected by a method such as welding as required to have a predetermined height. Stand up the pillar. As will be described later, a pulley is attached to the top of the pillar 2.

  Next, the placement of slabs corresponding to the second floor slab (first slab), the third floor slab (second slab), and the roof slab (third slab) will be described. What is necessary is just to have predetermined intensity | strength. In FIG. 1d, in order to place a slab, a formwork 3 (a veneer plate also called a panel) is erected on the inside of a pillar 2 and then a panel 4 is laid as a peeling member. A vinyl sheet or the like may be used as the peeling member.

  Then, as the reinforcing member, the truss beams 5 are arranged in a lattice shape in the mold 3 and the places where the truss beams 5 intersect are welded. Further, reinforcing bars 6 may be arranged in the grid cells as reinforcing members, and lightweight blocks (not shown) such as polystyrene foam may be arranged to reduce the weight of the slab while ensuring a predetermined strength. . It is good also as a structure which arrange | positions the reinforcing bar 6 on the upper and lower sides of a lightweight block, and pinches | interposes a lightweight block.

  In addition, a small frame 7 and hook hooks 8 (for example, iron bars) that have been penetrated in advance through the small frame 7 are arranged at the four corners of the slab in order to form a hollow portion and a hook hook portion for lifting with a wire, which will be described later. To do. In addition, blocks (not shown) for forming concave portions for temporary fixing, which will be described later, are arranged on the side surfaces of the four corners of the slab.

  In addition, the outline of the corner part of the slab shown by the chain line circle in FIG. 1d is shown in FIG. 1e. The hollow portion 9 penetrates the slab, and the hook hanging portion 8 is embedded in the slab. Moreover, the recessed part 10 is formed in the step in the side surface of the slab.

  In this state, ready-mixed concrete is poured and a slab (second floor slab 12) is placed. When the ready-mixed concrete is hardened to some extent (for example, 24 hours), the formwork 3 is erected on the second floor slab 12, and the panel 4 and the like are laid. In the same manner, the truss beam 5 and the like are arranged, the ready-mixed concrete is poured, and a slab (third floor slab 13) is placed. Repeat this work to place the necessary slabs. For example, when constructing a three-story building, a total of three slabs, a second-story floor slab, a third-story floor slab, and a roof slab, are sequentially placed.

  After placing the slab, concrete curing time (about 4 weeks) is required to obtain sufficient strength. In the conventional construction method, it is necessary to cure concrete for each slab, which requires a significantly long construction period. However, since the next slab can be placed before the first slab has sufficient strength, and the slab can be placed sequentially, the construction period can be greatly shortened. That is, in the conventional method, the time of the number of slabs × about 4 weeks is required, but in the method of the present invention, the time of about 4 weeks is substantially required.

  Next, attachment of the slab will be described. As shown in FIG. 2a, a wire 24 is attached to a hook hook portion of the roof slab 14 at the uppermost portion via a hook (not shown). The wire 24 is hung on a pulley 21 attached to the top of the pillar 2 and a pulley 22 attached to the foundation 1. For example, the roof slab 14 is lifted by pulling the wire 24 with a winch (not shown).

  When the roof slab 14 is lifted to an appropriate position, the roof slab 14 is temporarily fixed to the column 2. As shown in FIG. 2b, a temporary stopper 41 (for example, a metal piece made of iron) is inserted into the recess 10 of the roof slab 14, and the horizontal member 2b of the pillar 2 and the temporary stopper 41 are locked, thereby the roof slab. 14 is temporarily fixed. Since the recessed part 10 is formed in steps, the temporary stopper 41 can be inserted from two directions. In FIG. 2b, the pillar 2 is illustrated in a simplified manner.

  Similarly, the third floor slab 13 is also lifted and temporarily fixed to the pillar 2. Since the wire 24 penetrates the hollow portion 9 of each slab, there is no problem in lifting the slab.

  Further, as shown in FIG. 3a, a wire 24 is attached to the second floor slab 12, and the second floor slab 12 is lifted to a predetermined position. Here, the strut 31 is inserted between the foundation 1 and the second floor slab 12 in a state where the second floor slab 12 is lifted to some extent.

  One end of the strut 31 is attached to the lower surface of the second floor slab 12 so as to be rotatable. For example, the link shaft 32 is provided in the same manner as the hook hooking portion 8 at the time of placing, and one end of the strut 31 is attached to the link shaft 32 so as to be rotatable.

  A pulley 23 with a roller that can roll on the base 1 is attached to the other end of the strut 31. A wire 25 is hung on the pulley 23, and the wire 24 and the wire 25 are pulled simultaneously. Therefore, the second floor slab 12 is lifted by the wire 24 and is pushed up by the strut 31 and lifted to a predetermined position.

  Although there is no need to push up due to the strut 31, if the second floor slab 12 is supported by the strut 31, the tension of the wire 24 is reduced, so that the breakage of the wire 24 can be prevented. In addition, accidents such as falling of the slab can be prevented even if there is shaking due to an earthquake during the lifting work.

  Explain how to fix the column and slab. As shown in FIG. 3 b, first, the connecting member 42 is welded to the reinforcing member (for example, the truss beam 5) of the second floor slab 12 while penetrating the column 2. An example of the coupling member 42 is shown in FIG. 3c. In the figure, it has a structure in which an iron disk and an iron bar are welded.

  As shown in FIG. 3 d, the periphery of the pillar 2 is then surrounded by a mold frame 43, and ready-mixed concrete is poured into the mold frame 43. The ready-mixed concrete spreads inside and around the pillar 2 and is filled in the gap between the second-floor floor slab 12 and the pillar 2, so that the second-floor slab 12 and the pillar 2 are fixed.

  In another method, a joining member through which the pillar 2 can penetrate may be used. In FIG. 3e, the coupling member 44 is joined to the reinforcing member (for example, the truss beam 5) of the second floor slab 12 in advance. The connecting member 44 may be passed through the column 2 before the slab is placed and joined to the reinforcing member (for example, welding or bolting) before the slab is lifted. Therefore, welding work at a high place becomes unnecessary.

  Also in this method, as shown in FIG. 3 f, the periphery of the pillar 2 is surrounded by a mold frame 43, and ready-mixed concrete is poured into the mold frame 43. The ready-mixed concrete spreads inside and around the pillar 2 and is filled in the gap between the second-floor floor slab 12 and the pillar 2, so that the second-floor slab 12 and the pillar 2 are fixed. And a wall member is attached between the pillars 2.

  The wall member may be attached by a known method. However, as shown in FIG. 4, the wall member 33 is attached, and the pillar 2, the second floor slab 12, and the wall member 33 in contact with the pillar 2 are cast with concrete. You can also. Further, the strut 31 also serves to reinforce the wall member 33. Note that the end of the strut 31 is fixed to the link shaft 34 fixed to the base portion 1 before placing. Therefore, since the building is assembled from the lower floor, the building does not have an unstable structure at the initial stage of construction.

  Similarly, the slabs of the lower floors are sequentially attached, and finally the roof slab 14 is attached to the pillar 2. For example, as shown in FIG. 5, a strut 31 is inserted between the second floor slab 12 and the third floor slab 13. The third floor slab 13 is lifted to a predetermined position by being lifted by the wire 24 and pushed up by the strut 31.

It is the figure which looked at the building before placing the slab from the top. It is a figure which shows a part of building before slab placement. It is the sectional view on the AA line of FIG. It is the figure which looked at the building before placing the slab from the top. FIG. 2 is a schematic view showing a corner of a slab surrounded by a circle in FIG. 1d. It is a figure which shows the process of attachment of a slab. It is a figure which shows the temporary stop of a slab. It is a figure which shows the process of attachment of a slab. It is a figure which shows fixation of a slab and a pillar. It is a figure which shows an example of a coupling member. It is a figure which shows fixation of a slab and a pillar. It is a figure which shows fixation of a slab and a pillar. It is a figure which shows fixation of a slab and a pillar. It is a figure which shows the process of attachment of a slab. It is a figure which shows the process of attachment of a slab.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Base part 2 Column 3 Formwork 4 Companion panel 5 Truss beam 6 Reinforcement 12 Second floor slab 13 Third floor slab 14 Roof slab 21, 22 Pulley 23 Pulley 24, 25 Wire 31 Stitch 32 Link shaft 33 Wall member 34 Link shaft 41 Temporary fastener 42 Coupling member 43 Form frame 44 Coupling member

Claims (5)

Assembling the formwork so that the pillar is on the outside of the foundation of the building where the pillar is erected, laying a peeling member in the formwork, and further placing a reinforcing member on the peeling member, Pour the ready-mixed concrete into the mold, and provide a first slab with a hook hanging portion,
A mold is assembled on the first slab so that the pillar is on the outside, a peeling member is laid in the mold, and a reinforcing member is disposed on the peeling member. Pour concrete, repeat the process of placing the second slab with hooks at the four corners, place the first to Nth slabs,
A slab other than the first slab is lifted to a predetermined position by a wire via a pulley attached to the top of the column, each slab is temporarily fixed to the upper portion of the column, and the first slab is predetermined by the wire. And lift the first slab to the column,
Similarly, the second to Nth slabs are sequentially fixed to the column. Assembling the formwork so that the pillar is on the outside of the foundation of the building where the pillar is erected, laying a peeling member in the formwork, and further placing a reinforcing member on the peeling member, Pour the ready-mixed concrete into the mold, and provide a first slab with a hook hanging portion,
A mold is assembled on the first slab so that the pillar is on the outside, a peeling member is laid in the mold, and a reinforcing member is disposed on the peeling member. Pour concrete, repeat the process of placing the second slab with hooks at the four corners, place the first to Nth slabs,
A slab other than the first slab is lifted to a predetermined position by a wire via a pulley attached to the top of the pillar, each slab is temporarily fixed to the upper part of the pillar, and the first slab is lifted by the wire. In addition, one end of the strut is rotatably attached to the lower surface of the first slab, a pulley with a roller capable of rolling is attached to the other end of the strut, a wire hung on the pulley is pulled, and the muscle The first slab is pushed up by a mistake and lifted to a predetermined position, and the first slab is fixed to the column,
Similarly, the second to Nth slabs are sequentially fixed to the column. Each of the slabs has recesses for temporary fixing at the four corners, and the pillar has a horizontal member at a predetermined position.
The method for constructing a building according to claim 1 or 2, wherein the temporary fixing method for each slab is a method of locking the temporary fixing tool inserted into the recess and the horizontal member of the pillar.   The method of fixing each slab is a method of fixing each slab to the column by joining the column with a joining member that is bonded to each slab and penetrates the column or penetrates the column. The construction method for a building according to any one of claims 1 to 3.   The fixing method of each slab is as follows. Each of the slabs is bonded to each slab, and a joining member penetrating the column or penetrating the column, the column, and a wall member in contact with the column are cast with concrete. It is a method of fixing a slab to the said pillar, The construction method of the building in any one of Claims 1-4.

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