JP7005262B2 - How to build a building - Google Patents

Description

The present invention relates to a method for constructing a building having a girder and a suspended frame suspended and supported by the girder.

Conventionally, a frame may be constructed on a girder with a large span.
Patent Document 1 discloses a method of constructing an upper frame constructed above a girder in a structure in which a stairwell is formed under a girder having a large span erected on an intermediate floor. Specifically, after the girder is erected, a jack is installed between the pillar of the upper frame erected on the girder and the girder, and the frame is one layer or more on the girder with the pillar supported by the jack. Every time the whole or a part of the frame is constructed, the work of jacking up the pillars is repeated.

In Patent Document 2, after the roof is grounded, the wall frame is divided into a plurality of parts, jacks are provided on the wall frame in each divided section, and the steps are attached to the roof on these jacks. A method of pushing up and constructing a large span roof frame is shown, which comprises the steps of driving a standing jack to raise the roof and further constructing a wall skeleton below the inactive jack.

Patent Document 3 discloses a construction method in which a large span girder is erected with a main space above the lower skeleton and curved upward, and the upper skeleton is supported by the large span girder. Specifically, a PC steel wire is laid vertically from the column position of the large span girder to the upper column position of the lower skeleton, and a hydraulic jack is provided at this upper column position, and the PC steel wire is tensioned by this hydraulic jack. A downward load is applied to the large span girder. The load is adjusted with a hydraulic jack according to the construction stage of the upper frame.

Japanese Unexamined Patent Publication No. 2000-144892 Japanese Unexamined Patent Publication No. 991-197736 Japanese Unexamined Patent Publication No. 1992-044569

The present invention provides a method for constructing a building including a girder installed on the middle floor or the top floor of a building and a suspended frame structure having a plurality of floors suspended and supported by the girder in a short construction period. Is the subject.

The method for constructing a building according to the first invention is to use a girder (for example, a lower girder 12 and an upper girder 22 described later) and a suspended frame suspended and supported by the girder (for example, a lower suspended frame 13 and an upper suspension described later). It is a method of constructing a building having a frame 23) (for example, the building 1 described later), and is a hanging frame structure (for example, a lower hanging frame described later) on a temporary support (for example, temporary columns 30 and 32 described later). A step of constructing the body 13 and the upper suspended frame 23) (for example, steps S1 and S2 described later), a step of constructing a girder above the suspended frame (for example, step S3 described later), and the temporary support column. (For example, the suspended frame is pushed up by the temporary support 30 described later), or the suspended frame is pulled up by a jack attached to the girder (for example, the hydraulic jack 34 described later) to lift the suspended frame. It is characterized by comprising a step of moving upward and joining to the girder (for example, step S4 described later) and a step of removing the temporary support (for example, step S5 described later).

According to the present invention, a suspended frame structure having a plurality of floors is temporarily supported by temporary columns and then constructed, and then the suspended frame is moved upward by temporary columns or hydraulic jacks to be suspended and supported from a girder. Therefore, it is possible to construct a building having a suspended frame suspended and supported by a girder in a short construction period.
Further, since the suspended frame is suspended and supported from the girder, no load is applied to the suspended frame. Therefore, it is not necessary to provide the beams or the floor of the suspended frame to be lifted, and the exterior material can be attached to the suspended frame at an early stage.

The method for constructing a building according to the second invention is characterized in that, in the step of constructing the girder, the central portion of the span of the girder is curved upward.

When the suspended frame is composed of multiple floors of the building, the weight of the suspended frame is large, so when the suspended frame is suspended and supported from the girder, the girder is deformed and bends downward.
Therefore, according to the present invention, in consideration of the bending due to the weight of the suspended frame, the center of the span of the girder is curved upward to provide a peeling. Therefore, when the suspended frame is lifted, the girder is lifted. Can be made almost horizontal.

In the method for constructing a building according to the third invention, the building further includes a girder support frame (for example, an upper girder support frame 21 described later) which is provided adjacent to the suspended frame and supports the girder. In the step of joining the suspended frame and the girder, at least a part of the suspended frame is temporarily supported by a temporary support member (for example, a temporary support member 33 described later) from the girder support frame. It is a feature.

Here, the temporary support member may be a compressive material on which a compressive force acts, or a tensile material on which a tensile force acts. Further, a hydraulic jack or the like may be built in the temporary support member so that the length and axial force of the temporary support member can be adjusted.
According to the present invention, at least a part of the suspended frame is temporarily supported from the girder support frame by a temporary support member. Therefore, since the girder support frame bears a part of the weight of the suspended frame, the vertical load applied to the temporary support can be reduced while reducing the amount of downward bending of the suspended frame. In addition, since the girder support frame restrains the horizontal swing of the suspended frame via the temporary support member, the suspended frame is not joined even if the girder and the suspended frame are not joined in the building construction process. The seismic performance of the body can be ensured.

According to the present invention, it is possible to construct a building including a girder installed on the middle floor or the top floor of a building and a suspended frame structure having a plurality of floors suspended and supported by the girder in a short construction period.

It is a vertical sectional view of a building constructed by the building construction method which concerns on one Embodiment of this invention. It is a flowchart of the main construction procedure of a building having a suspended frame. It is a flowchart of the detailed construction procedure of a building having a suspended frame. It is explanatory drawing of the building construction procedure (the first, the construction process of the lower suspension frame). It is explanatory drawing (2, construction process of a lower girder) of a building construction procedure. It is explanatory drawing (3, the process of joining a lower girder and a lower suspension frame) of a building construction procedure. It is explanatory drawing (4, removal process of a temporary support) of a building construction procedure. It is explanatory drawing (5, construction process of the upper suspension frame) of the building construction procedure. It is explanatory drawing (6, the process of joining the upper girder and the upper suspension frame) of the building construction procedure.

The present invention is a method of suspending and supporting a suspended frame from a mega truss (girder) installed on the middle floor or the top floor of a building, in which the girder support frame and the suspended frame are separately constructed and simultaneously constructed. After that, it is a method of constructing a building in which a girder is erected on a girder support frame and a suspended frame is joined to the girder.
In the present invention, when constructing the lower frame structure constituting the lower part of the building, the suspended frame is constructed on the temporary support placed on the floor slab, and then the suspended frame is pushed up from below by the temporary support. , Join to the girder (Figs. 4-7). On the other hand, when constructing the upper frame that constitutes the upper part of the building, the amount of downward deflection of the suspended frame is reduced by constructing the suspended frame while temporarily supporting it from the girder support frame with temporary support members. After that, the suspended frame is pulled up by the uppermost hydraulic jack and joined to the girder (FIGS. 8 and 9).

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a vertical sectional view of a building 1 constructed by the method for constructing a building according to an embodiment of the present invention.
The building 1 includes a lower frame 10 and an upper frame 20 provided on the lower frame 10.

The lower frame 10 has a lower girder support frame 11 composed of a plurality of floors, a truss structure lower girder 12 constructed on the lower girder support frame 11 and supported by the lower girder support frame 11, and a lower portion. A lower suspension frame 13 composed of a plurality of floors provided adjacent to the girder support frame 11 and suspended and supported by the lower girder 12 is provided.
A seismic isolation device 14 is provided between the lower girder support frame 11 and the lower girder 12, and a seismic isolation layer 15 is formed.

The upper frame 20 has an upper frame 21 composed of a plurality of floors, a truss structure upper frame 22 constructed on the upper frame 21 and supported by the upper frame 21, and an upper portion. It is provided with an upper suspension frame 23 composed of a plurality of floors, which is provided adjacent to the girder support frame 21 and is suspended and supported by the upper girder 22.
The upper girder support frame 21 is located directly above the lower girder support frame 11 and is provided on the lower girder 12. Among the columns of the upper girder support frame 21, the column closest to the upper suspension frame 23 is the column 24, and the column closest to the column 25 is the column 25.

The upper suspension frame 23 is provided with two pillars 26 that are continuous from the lower end to the upper end. The upper suspension frame 23 is located directly above the lower suspension structure 13, but since it is suspended and supported from above by the upper girder 22, the load of the upper suspension structure 23 acts on the lower girder 12. do not have. That is, no load is applied to the lowermost column 26A of the upper suspension frame 23.

In the above building 1, the seismic isolation device 14 allows the lower girder 12, the lower suspension frame 13, and the upper frame 20 to move relative to the lower girder support frame 11 in the horizontal direction. ..

The procedure for constructing the above building 1 will be described with reference to the flowcharts of FIGS. 2 and 3. FIG. 2 shows the main construction procedure of the building 1, and FIG. 3 shows the detailed construction procedure of the building 1.
The procedure for constructing the building 1 includes a step of constructing the suspended frames 13 and 23 on the temporary columns 30 and 32 (steps S1, S2, S11 and S15 described later) and a girder 12 above the suspended frames 13 and 23. , 22 (steps S3, S12, S16 described later) and a jack (for example, the uppermost hydraulic jack 34 described later) that pushes up the suspension frame 13 by the temporary support column 30 or is attached to the girder 22. The steps of moving the suspended frames 13 and 23 upward and joining them to the girders 12 and 22 by pulling up the suspended frame 23 (for example, steps S4, S13 and S17 described later) and the temporary columns 30 and 32 are performed. A step of removing (for example, steps S5, S14, and S18 described later) is provided.

First, in step S1, the temporary support column 30 is installed on the floor slab of the girder support frame 11 or the girder 12 (see FIGS. 4 and 8).
In step S2, the girder support frames 11 and 21 are constructed, and the suspended frames 13 and 23 are constructed on the temporary columns 30 (see FIGS. 4 and 8).
In step S3, the girders 12 and 22 are constructed on the girder support frames 11 and 21 (see FIGS. 5 and 9).
In step S4, the suspension frame 13 is moved upward by pushing up the suspension frame 13 by the temporary support column 30 or by pulling up the suspension frame 23 by the hydraulic jack 34 attached to the girder 22. The suspension frames 13 and 23 are joined to the girders 12 and 22 and suspended and supported from the girders 12 and 22 (see FIG. 6).
In step S5, the hydraulic jack 31 and the temporary support column 30 are removed (see FIG. 6).

Next, a detailed procedure for constructing the building 1 will be described with reference to the flowchart of FIG.
In step S11, as shown in FIG. 4, the lower girder support frame 11 is constructed, and the temporary support column 30 is installed on the floor slab below the lower girder support frame 11. A hydraulic jack is built in the temporary support column 30. Next, the lower suspension frame 13 is constructed on the temporary support column 30 from the lower layer to the upper layer adjacent to the upper part of the lower girder support frame 11. At this time, a hydraulic jack 31 is provided on the pillar 16 on the predetermined two floors of the lower suspension frame 13. That is, each column 16 of the lower suspension frame 13 is supported by a temporary column 30 at the lower end thereof, and hydraulic jacks 31 are interposed at two intermediate positions.

In step S12, as shown in FIG. 5, the lower girder 12 is constructed above the lower girder support frame 11. Specifically, the seismic isolation device 14 is mounted on the lower girder support frame 11, and the lower girder 12 is constructed on the seismic isolation device 14.
At this time, the central portion of the span of the lower girder 12 is curved upward to form a peel. As a result, the lower girders 12 are arranged above the lower suspension frame 13 at predetermined intervals.

In step S13, as shown in FIG. 6, by driving the jack of the temporary support column 30 and pushing the lower suspension frame 13 upward toward the lower girder 12, the lower suspension structure 13 is moved upward and the lower part is moved. Join to the girder 12.
After that, as shown in FIG. 7, the jack of the temporary support column 30 is jacked down. As a result, the lower suspension frame 13 is suspended and supported by the lower girder 12, and the peeling of the lower girder 12 is eliminated, so that the lower girder 12 becomes substantially horizontal.

When the jack of the temporary support column 30 is jacked down, the load acting on the column 16 of the lower suspension structure 13 becomes large, and the column 16 extends in the axial direction and becomes long. Therefore, by driving the hydraulic jack 31 provided on the pillar 16 on the predetermined floor of the lower suspension frame 13, the length of the pillar 16 of the lower suspension structure 13 is appropriately adjusted.
In step S14, as shown in FIG. 7, the hydraulic jack 31 and the temporary support column 30 are removed.

In step S15, as shown in FIG. 8, the upper girder support frame 21 and the upper suspension frame 23 are constructed on the lower girder 12 from the lower layer to the upper layer.
Here, a temporary support column 32 is installed on the lower girder 12 instead of the lowermost column 26A of the upper suspension frame structure 23, and the upper suspension frame structure 23 is constructed on the temporary support column 32.
Further, a hydraulic jack 31 is provided between the stigma of the pillar 26 and the floor skeleton 27 on the immediately above floor for each of the three floors of the upper suspension frame 23. Further, a temporary support member 33 is provided between the stigma of the column 26 on the floor directly below the floor where the hydraulic jack 31 is provided and the column base of the column 24 of the upper girder support frame 21 under the three floors. The temporary support member 33 is a rod-shaped compression material on which a compressive force acts, and the upper suspension frame 23 is temporarily supported from the upper girder support frame 21 by the temporary support member 33.

In the present embodiment, the temporary support member 33 which is a compression material is used, but the present invention is not limited to this, and as shown by the broken line in FIG. 8, the temporary support member 33A which is a tension material may be used. The temporary support member 33A is provided between the stigma of the pillar 24 on the floor where the hydraulic jack 31 is provided and the pillar base of the pillar 26 two floors below, and the hydraulic jack on each of the three floors of the upper suspension structure 23. It is provided between the stigma of the pillar 25 on the floor where 31 is provided and the pillar base of the pillar 24 two floors below. These temporary support members 33A are rod-shaped tensile members on which a tensile force acts, and the upper suspension frame 23 is temporarily supported from the upper girder support frame 21 by the temporary support member 33A.

In step S16, as shown in FIG. 9, the upper girder 22 is constructed on the upper girder support frame 21 and the upper suspension frame 23.
At this time, the central portion of the span of the upper girder 22 is curved upward to form a peel. As a result, the upper girder 22 is arranged above the upper suspension frame 23 at predetermined intervals, so that the hydraulic jack 34 is attached between the top of the pillar 24 of the upper suspension structure 23 and the upper girder 22.

In step S17, the lower suspension frame 13 is moved upward and joined to the upper girder 22 by driving the uppermost hydraulic jack 34 and pulling the upper suspension structure 23 upward toward the upper girder 22. do. As a result, the upper suspension frame 23 is suspended and supported by the upper girder 22, and the peeling of the upper girder 22 is eliminated, so that the upper girder 22 becomes substantially horizontal.
Further, by driving the hydraulic jack 34 on the uppermost stage and pulling the upper suspension structure 23 upward, the compressive force acting on the temporary support member 33 on the uppermost stage is released, so that the temporary support member 33 is removed. do. This work is repeated from the upper layer to the lower layer.
When the upper suspension frame 23 is pulled upward, the load acting on the pillar 26 of the upper suspension structure 23 becomes large, and the pillar 26 extends in the axial direction and becomes long. Therefore, by driving the hydraulic jack 31, the length of the pillar of the upper suspension frame 23 is appropriately adjusted.
In step S18, the hydraulic jack 31 and the temporary support column 32 are removed. At the location where the temporary column 32 is removed, the lowermost column 26A of the upper suspension frame 23 is constructed (see FIG. 1).

According to this embodiment, there are the following effects.
(1) The suspension frames 13 and 23 composed of a plurality of floors are temporarily supported by the temporary columns 30 and 32, and then the suspension structures 13 and 23 are moved upward by the temporary columns 30 or the hydraulic jack 34. It is suspended and supported from the girders 12 and 22. Therefore, by separating the girder support frames 11 and 21 and the suspended frames 13 and 23 and constructing them at the same time, the building 1 provided with the suspended frames 13 and 23 can be constructed in a short construction period.
Further, since the suspended frame structures 13 and 23 are suspended and supported from the girders 12 and 22, no overload is applied to these suspended frame structures 13 and 23. Therefore, it is not necessary to provide the beams and floors of the suspended frames 13 and 23 with peeling, and the exterior material can be attached to the suspended frames 13 and 23 at an early stage.

(2) In consideration of the bending due to the weight of the suspended frames 13 and 23, the center of the span of the girders 12 and 22 is curved upward in advance to provide a peeling, so that the suspended frames 13 and 23 are lifted. At that time, the girders 12 and 22 can be made substantially horizontal.

(3) The upper suspension frame 23 was temporarily supported from the upper girder support frame 21 by the temporary support member 33. Therefore, since the upper girder support frame 21 bears a part of the weight of the upper suspension frame 23, the vertical load applied to the temporary support column 32 can be reduced while reducing the amount of downward bending of the upper suspension frame 23. .. Further, since the upper girder support frame 21 restrains the horizontal shaking of the upper suspension frame 23 via the temporary support member 33, the upper girder 22 and the upper suspension frame 23 are joined in the construction process of the building 1. Even if it is not in the state, the seismic performance of the upper suspension frame 23 can be ensured.

The present invention is not limited to the above-described embodiment, and modifications, improvements, and the like to the extent that the object of the present invention can be achieved are included in the present invention.
For example, in the present embodiment, only when constructing the upper frame 20 of the building 1, the upper suspension frame 23 is constructed while temporarily supporting the upper suspension frame 23 from the upper girder support frame 21 by the temporary support member 33. However, it is not limited to this. For example, the temporary support member may be used when constructing the lower frame 10 of the building 1, or the temporary support member may not be used when constructing the upper frame 20 of the building 1.
Further, in the present embodiment, the building 1 is configured by arranging the lower frame 10 having the lower frame 13 and the upper frame 20 having the upper frame 23 in two upper and lower stages. Not limited to. For example, only the lower frame structure or the upper frame structure of the building may be arranged and configured in one stage.

1 ... Building 10 ... Lower frame 11 ... Lower girder support frame (girder support frame)
12 ... Lower girder (girder) 13 ... Lower hanging frame (suspended frame)
14 ... Seismic isolation device 15 ... Seismic isolation layer 16 ... Pillars of lower suspended frame 20 ... Upper frame 21 ... Upper girder support frame (girder support frame)
22 ... Upper girder (girder) 23 ... Upper suspended frame (suspended frame)
24, 25 ... Pillars of the upper girder support frame 26 ... Pillars of the upper suspension frame 26A ... Pillars at the bottom of the upper suspension frame 27 ... Floor skeleton 30 ... Temporary columns with built-in hydraulic jacks 31 ... Hydraulic jacks 32 ... Temporary columns 33, 33A ... Temporary support member 34 ... Top hydraulic jack

Claims (3)

It is a method of constructing a building having a girder , a suspended frame suspended and supported by the girder, and a girder supporting frame provided adjacent to the suspended frame and supporting the girder .
The process of constructing the suspended frame on the temporary support and
The process of constructing the girder above the suspended frame and
A step of moving the suspended frame upward by pushing up the suspended frame from below by the temporary support or pulling up the suspended frame by a jack attached to the girder to join the suspended frame to the girder. ,
The process of removing the temporary support is provided .
A method for constructing a building, characterized in that , in a step of joining the suspended frame and the girder, at least a part of the suspended frame is temporarily supported by a temporary support member from the girder support frame . It is a method of constructing a building having a girder , a suspended frame suspended and supported by the girder, and a girder supporting frame provided adjacent to the suspended frame and supporting the girder .
A process of constructing the suspended frame from the lower layer to the upper layer on the temporary support and a process of constructing the girder support frame from the lower layer to the upper layer .
The process of constructing the girder on the girder support frame and above the suspended frame, and
A step of moving the suspended frame upward by pushing up the suspended frame from below by the temporary support and joining the suspended frame to the girder.
A method for constructing a building, which comprises a step of removing the temporary support. The method for constructing a building according to claim 1 or 2 , wherein in the step of constructing the girder, the central portion of the span of the girder is curved upward.

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