JPH08302831A - How to build a building - Google Patents

Abstract

(57) [Summary] [Object] An object of the present invention is to construct a wall portion and a ceiling portion at the same time, thereby shortening the time required for the construction.
Moreover, it is an object of the present invention to provide a method of constructing a building that can shorten the time, minimize the amount of material used for the formwork, and significantly reduce the construction cost. [Construction] A method for constructing a building, in which a plurality of precast concrete structures connected by reinforcing bars are formed in a plurality of layers, and a predetermined precast concrete structure formed is lifted up to construct a building.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of constructing a building, and more particularly to a method of constructing a building in which a wall portion and a ceiling portion are simultaneously constructed.

[0002]

2. Description of the Related Art Conventionally, in the case of constructing a building by the PCa method (precast concrete method), for example, a building of a wall type structure, a support for holding a wall and a slab (ceiling) at the time of construction. This is a work that requires temporary installation of equipment for hoisting the building, and similarly for buildings of other structural types, the support for supporting columns and the equipment for hoisting the beam Work such as temporary construction is necessary and cannot be omitted. Further, since the floor, wall, ceiling, pillar, and beam described above are formed by casting in separate molds, a large amount of materials are used for this mold.

[0003]

In this conventional construction method, the above-mentioned work requires a great deal of time and cost, and a large amount of material used for the formwork requires a huge cost.
Moreover, there is a problem that transportation of this material further increases the cost.

The present invention focuses on the above-mentioned drawbacks of the prior art and solves this problem. The purpose thereof is to construct a wall portion and a ceiling portion at the same time to shorten the construction time. In addition, this time can be shortened, and the material used for the lower layer formwork can be reused in the upper layer formwork to minimize the amount of material used for the formwork and to significantly reduce the construction cost. It is to provide a method of building a building.

[0005]

The present invention has been made in view of the above objects, and the gist of the present invention is to form a plurality of precast concrete structures continuous by bar arrangement into a plurality of layers, A method for constructing a building by constructing a building by lifting up a predetermined precast concrete structure formed, in the lower layer,
A lower layer formwork is temporarily installed to form at least one floor part and a wall part constructed on one side of the floor part at a predetermined interval, and each is formed by the lower layer formwork. A step of placing concrete on the lower layer formwork in a state where the reinforcing bars are exposed and / or protruded from the intervals and ends of the lower layer formwork so that the concrete structure is at least finally connected by the reinforcing bar formation, and curing A barrier material is installed on the concrete structure, and a wall portion and a ceiling portion, which are constructed on the other side of the floor at the end facing the wall portion, are provided at predetermined intervals in the upper layer on the barrier material. The upper-layer formwork is temporarily installed in order to form the casting, and the reinforcements are exposed from the intervals and the ends of the upper-layer formwork so that the concrete structures formed in the upper-layer formwork are connected by the reinforcements. And / or in a protruding state, and on the lower floor, A method of constructing a building, comprising: a step of placing concrete on the upper-layer formwork so as to be continuous with reinforcing bars projecting from the section; and a step of lifting up a concrete structure of the hardened ceiling section. It is in.

The above-mentioned wall portion and ceiling portion are, in addition to a plate body having a desired shape, a frame body imitating the edge thereof, for example, a foundation stand on one side of the floor section, and a plurality of foundations constructed on this foundation stand. Book pillars,
It includes a frame body composed of a beam erected on the pillar, a frame body composed of a beam simulating the edge of the ceiling, and the like.

The bar arrangements applied to the lower-layer formwork and the upper-layer formwork are
Prestressing can be applied to the concrete structure to be cast by the pretensioning method, or prestressing can be applied by the posttensioning method by previously providing a sheath or the like.

The barrier material is installed on the concrete structure formed in the lower layer, and is used for forming the upper and lower concrete structures independently of each other. As the blocking material, specifically, for example, a vinyl sheet, a urethane foam plate, a polystyrene foam plate, a wood wool cement plate, or the like can be used.

In lifting up the concrete structure of the ceiling part, suitable equipment such as a hydraulic jack, an electric winch, a crane, etc. can be used. Particularly, while jacking up the ceiling part using a jack and a winch,
By winding the wire linked to the end of the ceiling so as to hold it, a safe construction method without work in high places can be achieved. The wall portion can be erected by this lift-up.

A joining formwork is temporarily installed at the joining part between the lifted ceiling part and the standing wall part, and at the joining part between the wall part and the floor part, and concrete is poured into this joining formwork. Set and fix. It can also be further reinforced by braces.

When the building to be constructed is a housing complex of two or more units on the same floor, except for one unit at one end, the wall is cast and the floor is prioritized. Since this is performed, it is necessary to drive and form the floor part of the wall part after the wall part is erected due to the lift-up of the concrete structure.

If the building to be constructed is a multi-story apartment house type, a barrier is installed on the concrete structure cast on the barrier and the barrier is placed on the barrier. It is possible to construct a multi-storey building by casting concrete structures on the walls and ceiling of the upper floors.

[0013]

In the method of constructing a building according to the present invention, first, the lower-layer formwork temporarily provided in the lower layer is reinforced, and concrete is poured, so that at least one floor and one side of the floor are provided. Finally, each concrete structure of the wall to be constructed is formed so as to be connected by reinforcing bars. Then, the upper layer formwork, which is temporarily installed in the upper layer on the barrier installed on this concrete structure, is reinforced, and by placing concrete, the other side of the floor at the end facing the wall is placed. The concrete structures of the wall portion and the ceiling portion, which are constructed on the sides, are formed so as to be connected to each other by reinforcing bars, and also to be connected to the reinforcing bars protruding from the floor and the wall section. Then, the building is constructed by lifting up the hardened concrete structure of the ceiling.

The wall portion is erected by lifting up the ceiling portion. Further, since the upper-layer formwork is temporarily installed after hardening of the lower-layer concrete structure, the material used for the lower-layer formwork can be reused for the upper-layer formwork. In addition, the floor part that is connected to each wall part through the reinforcement is placed at the planned construction position, and when the concrete structure of the ceiling part is lifted up, the ceiling part and the wall part are planned to be constructed position. Prevent it from coming off.

[0015]

Embodiments of the present invention will be described below with reference to the accompanying drawings, but the present invention is not limited thereto.

1 (a) to 1 (c) are process diagrams showing an embodiment of a method of constructing a building according to the present invention, and FIGS.
(C) is a process drawing showing another embodiment of the method for constructing a building according to the present invention.

The building construction method of the present invention is shown in FIG.
As shown in FIG. 1 (c), a plurality of precast concrete structures 11 to 1 connected by reinforcing bars 31 to 34.
This is a method of constructing a building in which 2, 21 to 22 are cast into a plurality of layers and a predetermined precast concrete structure formed is lifted up to construct a building.

First, in order to form at least one floor portion A and a wall portion B constructed on one side A'of the floor portion A at a predetermined interval in the lower layer, a lower layer form (Fig. (Not shown) is provisionally provided, and the reinforcing bars 31 to 33 are exposed or protruded from the intervals and ends of the lower layer mold so that the concrete structures 11 and 12 formed by the lower layer mold are connected by the reinforcing bars. In this state, concrete is poured into the lower layer mold (Fig. 1 (a)).

Next, the hardened concrete structure 1
1, a barrier material 41 is installed on the barrier material 41, and a wall portion C and a ceiling of the lower floor which are constructed on the other side A "of the floor portion A facing the wall portion B in the upper layer on the barrier material 41. An upper-layer formwork (not shown) is temporarily installed to form the parts D at predetermined intervals, and a concrete structure 2 formed by the upper-layer formwork 2
1, 22 with the bar arrangements 34 exposed or protruding from the gaps and ends of the upper-layer formwork so as to be connected by bar arrangements, and the bar arrangements 31 protruding from the floor A and wall B of the lower layer.
Concrete is placed on the upper-layer mold so as to be continuous with 33 (FIG. 1 (b)). The materials used in the lower layer mold are reused for this upper layer mold.

Then, the hardened concrete structure 22 of the ceiling portion D is lifted up (FIG. 1 (c)). Thus, by lifting up the concrete structure 22 of the ceiling portion D, the concrete structure 1 of the wall portions B and C
2, 21 can be erected.

A joint portion between the lifted-up ceiling portion D and the erected wall portions B and C, the wall portions B and C, and the floor portion A.
A joint form is provisionally provided at the joint portion with and concrete is poured and fixed to the joint form (not shown). It can also be further reinforced by braces.

As described above, in the method of constructing a building according to the present embodiment, it is possible to shorten the construction time by constructing the wall portion and the ceiling portion at the same time. The amount of materials used can be kept to a minimum and the construction cost can be greatly reduced.

Next, another embodiment of the building construction method according to the present invention will be described with reference to FIGS. 2 (a) to 2 (c).

The construction method of the illustrated building is as follows:
A method for constructing a building, in which a plurality of precast concrete structures 11 to 14 and 21 to 23 continuous by 36 are cast into a plurality of layers, and a predetermined precast concrete structure formed is lifted up to construct a building. Is.

First, in the lower layer, at least one floor A,
A lower-layer formwork (not shown) is temporarily installed to form E and walls B and F constructed on one side A ′ and E ′ of the floor A and E at a predetermined interval. At the same time, the reinforcing bars 31 to 35 are exposed and / or projected from the intervals and the ends of the lower layer formwork so that the concrete structures 11 to 14 formed by the lower layer formwork are connected at least finally by the reinforcing bar arrangement. In this condition, concrete is placed on the lower formwork (Fig. 2
(A)).

Next, the hardened concrete structure 11
The barriers 41 and 42 are installed on the
A wall C, which is constructed on the other side A "of the floor A at the end facing the walls B and F, and ceilings D and G on the lower floor, are provided at a predetermined interval on the upper layer on the upper side of 42. The upper layer formwork (not shown) is temporarily installed in order to form the casting and the concrete structures 21 to 23 formed by the upper layer formwork are connected to each other by the reinforcing bars so that the above-mentioned intervals and edges of the upper layer formwork are formed. With the bar arrangement 36 exposed and / or protruding from the floor, and the floor A above
Then, concrete is poured into the upper layer formwork so as to be continuous with the reinforcing bars 31, 33, and 35 protruding from the walls B and F (FIG. 2 (b)). The materials used in the lower layer mold are reused for this upper layer mold.

Then, the concrete structures 22 and 23 of the hardened ceiling portions D and G are lifted up (see FIG. 2).
(C)). In this way, by lifting up the concrete structures 22 and 23 of the ceiling portions D and G, the wall portions B and
The C, F concrete structures 12, 14, 21 can be erected.

The joints between the lifted ceiling portions D and G and the standing wall portions B, C and F, and the wall portions B and C.
Then, a joint form is temporarily installed at the joint between the floors A and E, and concrete is placed and fixed on the joint form (not shown). It can also be further reinforced by braces.

Finally, the concrete structure 12 of the wall B
A floor portion (not shown) is formed by casting in the portion where was formed by casting.

As described above, in the method of constructing a building according to the present embodiment, the time required for construction can be shortened by constructing the wall portion and the ceiling portion at the same time. Materials used for formwork are kept to a minimum,
The construction cost can be reduced significantly.

[0031]

According to the method of constructing a building of the present invention, the wall portion and the ceiling portion can be constructed at the same time, and the material used for the lower layer formwork can be reused for the upper layer formwork to form the mold. The material used for the frame can be kept to a minimum. Therefore, it is possible to provide a method of constructing a building that can reduce the time required for construction and significantly reduce the cost required for construction.

[Brief description of drawings]

1A to 1C are process drawings showing an embodiment of a method for constructing a building according to the present invention.

2A to 2C are process diagrams showing another embodiment of the method for constructing a building according to the present invention.

[Explanation of symbols]

 11-14 Lower-layer concrete structure 21-23 Upper-layer concrete structure 31-36 Bar arrangement 41,42 Barrier A, E Floor B, C, F Wall D, G Ceiling

Claims (1)

[Claims] 1. A method of constructing a building, wherein a plurality of precast concrete structures connected by reinforcing bars are formed in a plurality of layers, and a predetermined precast concrete structure formed is lifted up to construct a building. In the lower layer, a lower layer formwork is temporarily installed to form at least one floor and a wall portion constructed on one side of the floor at a predetermined interval, and the lower layer formwork is formed. The concrete structure is formed by placing concrete on the lower-layer mold while exposing and / or projecting the reinforcing bars from the gaps and ends of the lower-layer mold so that the concrete structures are connected at least finally by the reinforcing bar. A step of installing a barrier material on the hardened concrete structure, and a wall portion and a ceiling portion constructed on the other side of the floor at the end facing the wall portion in the upper layer on the barrier material. Given Temporarily installing the upper-layer formwork to form the piles at intervals, and arrange the reinforcements from the above-mentioned intervals and ends of the upper-layer formwork so that the concrete structures formed by the upper-layer formwork are connected by the reinforcements. A step of placing concrete in the upper-layer formwork in a state of being exposed and / or protruding so as to be continuous with the reinforcing bar projecting from the floor and wall of the lower layer, and lifting the concrete structure of the hardened ceiling part. A method of constructing a building, comprising: a step of upgrading.