JP2020097840A - Construction method for suspended structure section - Google Patents

Abstract

To provide a construction method for a suspended structure section capable of reducing cost and a construction period as minimizing a timber installation period in a column less space.SOLUTION: A construction method comprises construction steps of constructing frame parts 11, 21 and 31 in turn from below in a state in which inner side columns 12, 22 and 32 are separated after a suspended structure section 30 is separated to a plurality of areas 10, 20 and 30 in a vertical direction. In each of the construction steps, after constructing frame parts 11a, 21a and 31a of bottom parts added with temporary members 15, 25 and 35 to support a vertical load with an outer column are constructed on respective bottom sides, the other of frame parts 11, 21 and 31 are constructed on the frame parts 11a, 21a and 31a of the bottom parts. In each of the plurality of areas 10, 20 and 30 after construction, a step to remove the temporary members 15, 25 and 35 is performed after an inner column joint step to joint the inner columns 12 and 22 with upper inner columns 22 and 32 supported in a suspended manner with an upper frame section 37.SELECTED DRAWING: Figure 9

Description

The present invention relates to a method for constructing a suspension structure part in which a suspension structure part, in which an inner column is suspended and supported by an upper frame part provided between outer columns, is constructed on a pillarless space.

A construction method is known in which a structure portion in which an inner pillar is suspended and supported by an upper frame portion that is erected between outer pillars is constructed on a pillarless space (for example, refer to Patent Document 1).
In the construction method described in Patent Document 1, the structural portion is constructed above the wide area floor (100) which is a pillarless space. That is, in this construction method of the structure portion, first, the lower frame portion including the support beam (21) is constructed immediately above the wide area floor (100). Furthermore, a temporary member (50) for supporting the vertical load, which is transmitted to the inner column divided in the column-free space immediately below the lower frame part, on the outer column is added. Next, the remaining frame part is constructed on the lower frame part, and finally the upper frame part including the suspension member (10) is constructed on the top thereof. Then, after the upper frame part including the suspension member (10) is constructed, the middle of the inner pillar is once divided and the temporary member (50) is removed, and then the upper inner pillar and the lower inner pillar are separated. Reconnected. Then, the vertical load acting on the upper inner column is supported by the suspension member (10) of the upper frame portion, while the vertical load acting on the lower inner column is supported by the supporting beam (21) of the lower frame portion. Will be done. That is, the structural part constructed on the pillarless space is supported by both the upper frame part side and the lower frame part side.

JP, 2013-002116, A

However, in the construction method described in Patent Document 1, it is necessary to support almost all vertical loads of the structural portion on the lower frame portion side until the upper frame portion is constructed. Therefore, in order to omit the installation of the support work that supports the lower frame part from below in the pillarless space, it is necessary to add a relatively large-scale temporary member to the lower frame part. Furthermore, it is not possible to configure almost all the vertical load of the structural portion to be supported by the upper frame portion, and it is necessary to support a part of the vertical load by the support beams of the lower frame portion. And these things become a factor of cost increase and prolongation of the construction period.

In view of this actual situation, the main problem of the present invention is in a method of constructing a suspension structure part in which a suspension structure part in which an inner column is suspended and supported by an upper frame part that is installed between outer columns is constructed on a pillarless space. The point is to provide a technology that can reduce the cost and construction period while minimizing the installation period of support work in pillarless space.

A first characteristic configuration of the present invention is a method for constructing a suspension structure part in which a suspension structure part in which an inner column is suspended and supported by an upper frame part provided between outer columns is constructed on a pillarless space. There
The suspension structure is divided into a plurality of areas in the vertical direction, and the inner area is divided into upper and lower inner pillars in order from the bottom for each of the plurality of areas. Execute the area building process to build the frame part,
In the area building step performed for each of the plurality of areas, an area bottom frame part to which a temporary member for supporting the vertical load transmitted to the inner pillar is added to the outer pillar is provided on the bottom side of the area. After building, build the remaining area frame on the area bottom frame,
In each of the plurality of areas constructed by executing the area constructing step, after performing an inner pillar connecting step of connecting the inner pillar to an upper inner pillar suspended and supported by the upper frame portion, the temporary installation is performed. The point is to execute the temporary member removing step of removing the member.

According to this configuration, when finally constructing the suspension structure portion in which the inner pillar is suspended and supported by the upper frame portion such as the mega truss, each of the plurality of areas formed by dividing the suspension structure portion in the vertical direction Are sequentially built from the bottom for each area with the upper and lower inner pillars divided. Then, in the area building process of building each area, a temporary member for supporting the vertical load transmitted to the inner column on the outer column is added to the area bottom frame part constructed on the bottom side. Therefore, when constructing the remaining area frame parts in the area after the area bottom frame parts are constructed, it is possible to omit or simplify the support work for supporting the inner pillars of the area bottom frame parts from below.
In particular, in a pillar-free space such as a road, it is possible to shorten the installation period of the support work for supporting the inner pillar in the area immediately above the pillar from below.

Further, in each of the plurality of areas obtained by dividing the suspension structure along the vertical direction, the vertical load to be borne by the temporary member added to the area bottom frame is limited to the vertical load in the same area. , It is extremely small compared to almost all vertical loads of the suspended structure. Therefore, the temporary member temporarily installed in each area can be made as small and simple as possible to reduce the cost and shorten the construction period.

Further, in each of the plurality of areas after the construction, the inner pillar is connected to the upper inner pillar suspended and supported by an upper frame portion such as a mega truss, and then the temporary member in each area is removed. Then, it is possible to transfer almost all the vertical load of the suspension structure part, which was previously borne by the temporary members in each area, to the upper frame part.

Therefore, according to the present invention, in a method of constructing a suspension structure part in which a suspension structure part in which an inner column is suspended and supported by an upper frame part that is erected between outer columns is constructed on a columnless space, the support in the columnless space is supported. It is possible to provide a technology that can reduce the cost and the construction period while minimizing the installation period of the construction.

A second characteristic configuration of the present invention is that after the area building step is executed to build all of the plurality of areas, the inner pillar connecting step and the temporary member removal are sequentially performed from the top for each of all the areas. The point is to execute the process.

According to this configuration, after all areas are constructed, the inner column connecting step and the temporary member removing step are sequentially performed from the upper area downward. Then, in each area, the vertical load of the upper area must be reliably transferred to the upper frame section, and the vertical load of the area must be reliably transferred to the upper frame section via the inner pillar of the upper area. You can

A third characteristic configuration of the present invention is, in the area building step, built in a state in which the area bottom frame part is erected between the outer columns in a state in which a supporting structure that supports a vertical load is installed from below. The remaining area frame part is constructed in a state in which the support work is removed after the area bottom frame part is constructed.

According to this configuration, in the area building process for building each area, if the area bottom frame is temporarily built between the outer pillars while being supported from the lower side by the support work, then the lower side is constructed. It is possible to build the remaining area frame part in the area with the above-mentioned support work installed in the area removed. Therefore, it is possible to minimize the installation period of the support work in the pillarless space or the space between other areas.

A fourth characteristic configuration of the present invention is that, in the area building step of building an upper area directly above a lower area of the plurality of areas, an inner pillar of the lower area and an inner pillar of the upper area are provisionally provided. A provisional joining means for joining is provided, and the provisional joining means restrains a horizontal shift between the upper area and the lower area without transmitting a vertical load on the upper area side to the lower area side. The point is that it is configured as a thing.

According to this configuration, in the area building step of building the upper area, the inner pillar of the upper area to be built is temporarily joined to the inner pillar of the already constructed lower area by the temporary joining means, and thus the upper area is formed. The horizontal shift between the upper area and the lower area is restrained without transmitting the vertical load of the side to the lower area side. Therefore, in constructing the upper area, the vertical load transmitted to the inner pillar is favorably supported by the outer pillar by the temporary member temporarily installed in the area, while highly accurate with respect to the inner pillar whose horizontal displacement is restricted. The frame can be built on.

According to a fifth characteristic configuration of the present invention, in addition to the fourth characteristic configuration, the temporary joining means includes outer peripheral surfaces of a lower end portion of an inner pillar of the upper area and an upper end portion of an inner pillar of the lower area. The upper and lower connecting plates extending outward from a plurality of positions are sandwiched and connected by a pair of connecting members bolted to the upper and lower connecting plates.

According to this configuration, the connecting plate extending outward from the outer peripheral surface of the end of each of the upper and lower inner columns is sandwiched by the pair of connecting members and bolted together, and the upper area side Temporary joining means for temporarily joining the inner pillar of the upper area and the inner pillar of the lower area while restraining the horizontal shift between the upper area and the lower area without transmitting the vertical load to the lower area. Can be configured.

Further, since an erection piece can be provided as a connecting plate on the outer peripheral portions of the ends of the upper and lower inner pillars that have been divided, for example, when connecting the inner pillars in the inner pillar connecting step, the ready-made products are rebuilt. In a mode in which the adjustment jigs are used to connect the erection pieces of the upper and lower inner pillars by the jig, it is possible to re-correct the steel frame installation of the upper and lower inner pillars.

A sixth characteristic structure of the present invention is that, in addition to the fifth characteristic structure, the pair of connecting members are composed of a pair of channel steels with webs facing each other.

According to this configuration, in the case where the temporary joining means for temporarily joining the inner pillar of the upper area and the inner pillar of the lower area is configured to be connected by sandwiching the upper and lower connection plates with a pair of connecting members, A pair of channel steels with webs facing each other can be used as the pair of connecting members. As a result, even when a horizontal load is applied to the connecting member, the connecting member is composed of a pair of channel steels with webs facing each other, so that sufficient resistance to the horizontal load is exerted. Therefore, it is possible to reliably restrain the horizontal shift between the inner pillar in the upper area and the inner pillar in the lower area due to the horizontal load.

A seventh characteristic configuration of the present invention is, in addition to any of the fifth to sixth characteristic configurations, a bolt insertion hole for joining the connecting member to the connection plate on at least one side of the upper and lower connection plates. Is formed as a vertically long elongated hole.

According to this configuration, in the case where the temporary joining means for temporarily joining the inner pillar of the upper area and the inner pillar of the lower area is configured to be connected by sandwiching the upper and lower connection plates with a pair of connecting members, At least one side of each of the upper and lower connection plates is formed with an insertion hole for a bolt that joins the connecting member as a vertically long hole. As a result, the bolt inserted through the elongated hole is freely displaced in the vertical direction, so that it is possible to reliably prevent the transmission of the vertical load from the upper area side to the lower area side. In addition, the displacement of the bolt inserted in the elongated hole in the horizontal direction is restricted by the wall surface in the width direction of the elongated hole, so that the horizontal shift between the upper area and the lower area can be reliably suppressed. it can.

An elevation view showing the state of the building in the first step of the method for constructing the suspended structure An elevation view showing the state of the building in the second step of the method for constructing the suspended structure An elevation view showing the state of the building in the third step of the method for constructing the suspended structure An elevation view showing the state of the building in the fourth step of the method for constructing the suspended structure An elevation view showing the state of the building in the fifth step of the method for constructing the suspended structure An elevation view showing the state of the building in the sixth step of the method for constructing the suspended structure An elevation view showing the state of the building in the seventh step of the method for constructing the suspended structure An elevation view showing the state of the building in the eighth step of the method for constructing the suspended structure An elevation view showing the state of the building in the ninth step of the method for constructing the suspended structure An elevation view showing the state of the building in the tenth step of the method for constructing the suspended structure An elevation view showing the state of the building in the eleventh step of the method for constructing the suspended structure An elevation view showing the state of the building in the twelfth step of the method for constructing the suspended structure An elevation view showing the state of the building in the thirteenth step of the method for constructing the suspended structure An elevation view showing the state of the building in the fourteenth step of the method for constructing the suspended structure An elevation view showing the structure of the temporary joining means in a state in which the vertical load is not transmitted. The top view which shows the structure of a temporary joining means. An elevation view showing the configuration of the temporary joining means in a vertical load transmission state An elevation view showing the state of the temporary joining means in the work of correcting the strain. An elevation view showing the state of the inner column joined by the joining member

Embodiments of the present invention will be described with reference to the drawings.
As shown in FIG. 14, the construction method of the suspension structure portion of the present embodiment (hereinafter, referred to as “main construction method”) is performed between the outer pillars 3 constructed on both sides sandwiching a road or the like where no pillar exists. This is a construction method for constructing the suspension structure 5 in the sky above the pillarless space 8. Although the construction method will be described in detail later, in constructing the hanging structure portion 5 above the pillar-free space 8, the cost and the construction period can be reduced while minimizing the installation period of the support work in the pillar-free space 8. It is configured to be reducible.

In the construction method, the outer structure 2 including the outer pillars 3 is formed on both sides of the pillar-free space 8 by sequentially performing each step from a first step to a fourteenth step which will be described later. It is configured as a method for constructing the suspension structure 5 in which the inner columns 12, 22, 32 are suspended and supported on the lower side by the uppermost area frame 31 disposed between the columns 3 on the pillarless space 8. ..

Although details will be described later, in the present construction method, the hanging structure portion 5 is divided into a plurality of areas 10, 20, 30 along the vertical direction. Then, the area building process is executed for each of the plurality of areas 10, 20, 30 in a state where the inner columns 12, 22, 32 are separated from each other, so that the respective areas 10, 20, 30 are The internal area frame parts 11, 21, 31 are sequentially constructed from the lower layer side to the upper layer side.

In the present embodiment, the area located on the lowermost layer side of the hanging structure portion 5 is referred to as the lowermost layer area 10, and the area located on the uppermost layer side of the hanging structure portion 5 is referred to as the uppermost layer area 30. The area located in the middle of 5 is called the intermediate layer area 20. Further, the area building steps corresponding to the first to fourth steps of building the lowest layer area frame section 11 (an example of the area frame section) inside the lowermost layer area 10 are referred to as the lowermost layer area building step, and the middle layer area 20. The area building steps corresponding to the fifth to sixth steps of building the inner middle layer area frame section 21 (an example of the area frame section) are called middle layer area building steps, and the uppermost layer area frame inside the uppermost layer area 30. The area building process corresponding to the seventh process to the ninth process of building the unit 31 (an example of the area frame structure unit) is called the uppermost layer area building process.

In addition, after the execution of the respective area building steps of the first step to the ninth step, the inner pillar connecting step and the temporary member removing step are executed in a mode in which the steps 10 to 14 are sequentially executed. To do.
Hereinafter, the details of each process from the first process to the ninth process including each area building process, and the tenth process to the fourteenth process including the inner pillar connecting process and the temporary member removing process performed thereafter will be sequentially described. To do.

[Bottom layer area construction process]
In this construction method, first, the lowest layer area building step shown in FIGS. 1 to 4 is executed. In this lowermost layer area construction step, each step from the first step to the fourth step is sequentially executed in the lowermost layer area 10 to construct the lowermost layer area frame section 11 (see FIG. 4 ). Further, in this lowermost layer area construction step, the lowermost layer area bottom frame portion 11a (see FIG. 3) is constructed on the bottom side of the lowermost layer area 10 and then on the lowermost layer area bottom frame portion 11a. It is configured to construct the remaining bottom layer area frame section 11 (see FIG. 4).
Hereinafter, the details of the first step, the second step, the third step, and the fourth step which constitute the lowermost layer area building step will be sequentially described.

(First step)
The state of the building 100 in the first step in the present construction method is shown in FIG.
In this first step, the beam member 13 located on the bottom side of the lowermost layer area 10 is installed between the outer columns 3 on both sides in the sky above the column-free space 8. At this time, a support 70 that supports the beam member 13 from the lower side of the pillarless space 8 and a temporary suspending member 71 that supports the beam member 13 from the outer pillar 3 sides on both sides of the upper side are provided. As a result, the vertical load of the beam member 13 is supported by the support 70 and the temporary suspension member 71 until the joining of the beam member 13 on the bottom side to the outer columns 3 is completed. Become.

(Second step)
FIG. 2 shows the state of the building 100 in the second step executed after the first step in the present construction method.
In the second step, when the joining of the beam member 13 on the bottom side to the both outer columns 3 is completed, the support 70 and the temporary hanging member 71 that support the vertical load of the beam member 13 are removed. .. That is, as the beam members 13 located on the bottommost side of the lowermost layer area 10, those having higher bending rigidity than other beam members are used, and the beam members 13 on the bottommost side with respect to the both outer columns 3 are used. When the joining is completed, it is possible to favorably support only the outer columns 3. Therefore, the support 70 can be removed from the pillar-free space 8 such as a road at an early stage, and the use of the pillar-free space 8 can be resumed.

(Third step)
FIG. 3 shows the state of the building 100 in the third step executed after the second step in the present construction method.
In this third step, the bottom layer area bottom frame portion 11a (an example of the area bottom frame portion) is constructed on the bottom side of the bottom layer area 10 above the pillarless space 8. This bottom layer area bottom frame section 11a is constructed as a frame section in which the beam members 13 temporarily provided on both outer columns 3 and the beam members 13 immediately above it are connected by a plurality of inner columns 12.

Further, in the lowermost area bottom frame portion 11a, temporary diagonal members 15 (an example of a temporary member) for supporting the vertical load transmitted to the inner column 12 on the outer column 3 are provided on the lower side of both outer columns 3 and on the inner side thereof. It is provided in a form of connecting with the upper side of the inner pillar 12 located at.

(Fourth step)
FIG. 4 shows a state of the building 100 in a fourth step executed after the third step in the present construction method.
In this fourth step, the inner pillars 12 and the beam members 13 are constructed on the bottom layer area bottom frame portion 11a to which the temporary diagonal members 15 are added, and the remaining bottom layer area frame portion 11 in the bottom layer area 10 is constructed. (Example of area frame part) is constructed. At this time, the vertical load transmitted to the lower side of the inner column 12 of the lowermost layer area frame part 11 is supported by the both outer columns 3 via the temporary diagonal members 15. Therefore, the supporting work for supporting the lowermost layer area frame part 11 becomes unnecessary.

[Middle layer area construction process]
In this construction method, the intermediate layer area building process shown in FIGS. 5 to 6 is executed after the lowermost layer area building process. In this intermediate layer area building step, each step from the fifth step to the sixth step is sequentially executed in the intermediate layer area 20, and the intermediate layer area frame section 21 (see FIG. 6) is built. Further, in this middle layer area construction step, after the middle layer area bottom frame portion 21a (see FIG. 5) is constructed on the bottom side of the middle layer area 20, it is formed on the middle layer area bottom frame portion 21a. It is configured to construct the remaining middle-layer area frame portion 21 (see FIG. 6).
Hereinafter, the details of the fifth step and the sixth step constituting the intermediate layer area building step will be sequentially described.

(Fifth step)
FIG. 5 shows a state of the building 100 in a fifth step executed after the fourth step in the present construction method.
In the fifth step, the middle layer area bottom frame portion 21a (an example of the area bottom frame portion) is constructed on the bottom side of the middle layer area 20 above the already constructed lowest layer area frame portion 11. The intermediate layer area bottom frame portion 21a is constructed as a frame portion in which a pair of upper and lower beam members 23 temporarily provided on both outer columns 3 are connected by a plurality of inner columns 22. At this time, at least before provision of a temporary diagonal member 25, which will be described later, between the lower end portion of the inner column 22 of the intermediate layer area 20 and the upper end portion of the inner column 12 of the lowermost layer area 10, a temporary padding member is provided. 57 is interposed. As a result, the vertical load or the like of the middle layer area bottom frame portion 21a is supported by the inner column 12 of the lowermost layer area frame portion 11 via the temporary padding member 57 that functions as a support work.

Furthermore, in the middle layer area bottom frame portion 21a, temporary diagonal members 25 (an example of a temporary member) for supporting the vertical load transmitted to the inner side pillars 22 on the outer side pillars 3 are provided on the lower side of both outer side pillars 3 and inside thereof. It is provided in a form of connecting with the upper side of the inner pillar 22 located at.

(Sixth step)
FIG. 6 shows a state of the building 100 in a sixth step executed after the fifth step in the present construction method.
In this sixth step, when the installation of the temporary diagonal members 25 in the middle layer area bottom frame portion 21a is completed, the temporary padding member 57 supporting the vertical load of the middle layer area bottom frame portion 21a is an inner pillar. It will be removed from between 12 and 22. Then, from this point onward, the vertical load to be borne by the temporary diagonal member 15 provided in the lowermost layer area 10 is limited to the vertical load in the lowermost layer area 10, so that the temporary diagonal member 15 is required. Is designed to be as small and simple as possible.

Further, a temporary joining means 50 is interposed between the inner columns 12 and 22. Although the details of the temporary joining means 50 will be described later, the horizontal displacement between the intermediate layer area 20 and the lowermost layer area 10 is restrained without transmitting the vertical load on the intermediate layer area 20 side to the lowermost layer area 10 side. It is configured to do. Therefore, in constructing the intermediate layer area frame part 21 in the intermediate layer area 20, the vertical load transmitted to the inner column 22 is favorably supported by the outer column 3 by the temporary diagonal members 25 temporarily installed in the intermediate layer area 20. However, the middle-layer area frame part 21 is constructed with high accuracy with respect to the inner column 22 whose horizontal displacement is restricted.

Furthermore, the inner pillars 22 and the beam members 23 are constructed on the middle layer area bottom frame portion 21a to which the temporary diagonal members 25 are added, and the remaining middle layer area frame portions 21 (area frame portions) in the middle layer area 20 are constructed. Example) is constructed. At this time, the vertical load transmitted to the lower side of the inner column 22 of the intermediate layer area frame portion 21 is supported by both outer columns 3 via the temporary diagonal members 25.

[Top layer area construction process]
In the present construction method, the uppermost layer area building step shown in FIGS. 7 to 9 is executed after the intermediate layer area building step. In this uppermost layer area construction step, in the uppermost layer area 30, each step from the seventh step to the ninth step is sequentially executed to construct the uppermost layer area frame section 31 (see FIG. 9). Further, in this top layer area construction step, the top layer area bottom frame portion 31a (see FIG. 7) is constructed on the bottom side of the top layer area 30, and then on the top layer area bottom frame portion 31a. The remaining uppermost-layer area frame part 31 (see FIG. 9) is constructed.
Hereinafter, the details of the seventh step, the eighth step, and the ninth step constituting the uppermost layer area building step will be sequentially described.

(Seventh step)
FIG. 7 shows the state of the building 100 in the seventh step executed after the sixth step in the present construction method.
In the seventh step, the top layer area bottom frame portion 31a (an example of the area bottom frame portion) is constructed on the bottom side of the top layer area 30 above the already constructed middle layer area frame portion 21. The uppermost layer area bottom frame portion 31a is constructed as a frame portion in which a pair of upper and lower beam members 33 temporarily provided on both outer columns 3 are connected by a plurality of inner columns 32. At this time, at least before a temporary diagonal member 35, which will be described later, is provided, a temporary padding member is provided between the lower end of the inner column 32 of the uppermost layer area 30 and the upper end of the inner column 22 of the intermediate layer area 20. 57 is interposed. As a result, the vertical load or the like of the top layer area bottom frame portion 31a is supported by the inner column 22 of the middle layer area frame portion 21 via the temporary padding member 57 that functions as a support work.

Further, in the uppermost layer area bottom frame 31a, temporary diagonal members 35 (an example of a temporary member) for supporting the vertical load transmitted to the inner column 32 on the outer column 3 are provided on the lower side of both outer columns 3 and on the inner side thereof. It is provided in a form of connecting with the upper side of the inner column 32 located at.

(Eighth step)
FIG. 8 shows a state of the building 100 in an eighth step executed after the seventh step in the present construction method.
In this eighth step, when the installation of the temporary diagonal members 35 in the uppermost area bottom frame section 31a is completed, the temporary padding member 57 supporting the vertical load of the uppermost area bottom frame section 31a is an inner pillar. It will be removed from between 22 and 32. Then, from this point onward, the vertical load to be borne by the temporary diagonal member 25 provided in the intermediate layer area 20 is limited to the vertical load in the intermediate layer area 20. Is designed to be as small and simple as possible.

Further, a temporary joining means 50 is interposed between the inner columns 22 and 32. Although the details of the temporary joining means 50 will be described later, the horizontal displacement between the uppermost layer area 30 and the intermediate layer area 20 is restrained without transmitting the vertical load on the uppermost layer area 30 side to the intermediate layer area 20 side. It is configured to do. Therefore, in constructing the uppermost-layer area frame part 31 in the uppermost-layer area 30, the vertical load transmitted to the inner pillar 32 is favorably supported by the outer pillar 3 by the temporary diagonal members 35 temporarily installed in the uppermost-layer area 30. However, the uppermost-layer area frame part 31 is constructed with high accuracy with respect to the inner column 32 whose horizontal displacement is restricted.

Further, the inner pillar 32 and the beam member 33 are constructed on the uppermost layer area bottom frame portion 31a to which the temporary diagonal members 25 are added, and the remaining uppermost layer area frame portion 31 (area frame portion) in the uppermost layer area 30 is constructed. Example) is constructed. At this time, the vertical load transmitted to the lower side of the inner column 32 of the uppermost layer area frame part 31 is supported by the both outer columns 3 via the temporary diagonal members 35.

(9th step)
FIG. 9 shows a state of the building 100 in a ninth step executed after the eighth step in the present construction method.
In this ninth step, the suspension diagonal members 37a for suspending and supporting the vertical load transmitted to the inner side columns 32 of the uppermost area frame structure 31 by the both outer side columns 3 are located on the upper side of the both outer side columns 3 and inside thereof. It is provided in a form of connecting with the lower side of the inner pillar 32. As a result, the upper-layer-side frame portion including at least the hanging diagonal members 37a and the beam members 33 above and below the uppermost-layer area frame portion 31 is erected between both outer columns 3 and finally constructed. It functions as an upper frame part 37 such as a mega truss for suspending and supporting the vertical load of the suspension structure 5 (see FIG. 14) by the both outer columns 3 through the inner columns 12, 22, 32.

By performing the area building steps as described above, the area frame parts 11, 21, 31 are built in a state where the inner columns 12, 22, 32 are divided as shown in FIG. 9. After that, in a form in which each step from a 10th step to a 14th step, which will be described later, is sequentially executed, an inner pillar connecting step for connecting the inner pillars 12, 22, 32 to each other and a temporary installation for removing the temporary diagonal members 15, 25, 35. The member removing process is executed.
Hereinafter, the details of the 10th step, the 11th step, the 12th step, the 13th step, and the 14th step that execute the inner pillar connecting step and the temporary member removing step will be sequentially described.

(10th step)
FIG. 10 shows the state of the building 100 in the tenth step executed after the ninth step in the present construction method.
In the tenth step, a temporary member removing step of removing the temporary diagonal member 35 is executed in the uppermost layer area 30. Then, substantially all of the vertical load applied to the inner side pillars 32 of the uppermost layer area 30 is suspended and supported by the both outer side pillars 3 via the upper frame portion 37.

(11th step)
FIG. 11 shows a state of the building 100 in an eleventh step performed after the tenth step in the present construction method.
In this eleventh step, as shown in FIG. 19, the inner pillar 32 of the uppermost layer area 30 and the inner pillar 22 of the intermediate layer area 20 are welded to each other with the packing member 60 interposed therebetween. The inner column connecting step of connecting with is executed.

(Twelfth step)
FIG. 12 shows a state of the building 100 in a twelfth step executed after the eleventh step in the present construction method.
In the twelfth step, a temporary member removing step of removing the temporary diagonal member 25 is performed in the intermediate layer area 20. Then, almost all of the vertical load applied to the inner column 32 of the middle layer area 20 is received by the inner column 32 and the upper frame portion 37 of the uppermost layer frame portion 31 functioning as the upper frame portion and suspended and supported. Becomes

(13th step)
FIG. 13 shows a state of the building 100 in a thirteenth step executed after the twelfth step in the present construction method.
In the thirteenth step, as shown in FIG. 19, the inner pillars 22 of the intermediate layer area 20 and the inner pillars 12 of the lowermost layer area 10 are welded to each other with the packing member 60 interposed therebetween. The inner column connecting step of connecting with is executed.

(14th step)
FIG. 14 shows a state of the building 100 in a fourteenth step executed after the above thirteenth step in the present construction method.
In the fourteenth step, a temporary member removing step of removing the temporary diagonal member 15 is executed in the lowermost layer area 10. Then, almost all of the vertical load applied to the inner side columns 32 of the lowermost layer area 10 is passed through the intermediate layer area frame portion 21, and the inner side columns 32 and the upper frame portion 37 of the uppermost layer area frame portion 31 functioning as an upper frame portion. It will be suspended and supported.

[Temporary joining means]
Hereinafter, the detailed configuration of the temporary joining means 50 described above will be described.
In the intermediate layer area building process and the uppermost layer area building process shown in FIG. 6 and FIG. 9 described above, the temporary joining means 50, as shown in FIG. 15, is an inner pillar in the upper area 20, 30 to be built. 22 and 32 (hereinafter, referred to as “upper area inner pillar Au”) and inner pillars 12 and 22 of lower areas 10 and 20 located below (in the following description, “lower area inner pillar Ad”). It is called "."). The temporary joining means 50 is configured to restrain the horizontal shift between the upper area inner pillar Au and the lower area inner pillar Ad while blocking the transmission of the vertical load.

Specifically, as shown in FIGS. 15 and 16, a plurality of circumferential positions (for example, four locations) are provided on the respective outer peripheral surfaces of the lower end of the upper area inner pillar Au and the upper end of the lower area inner pillar Ad. Connection plates 51 called upper and lower erection pieces that extend outwardly from are provided. The upper and lower connection plates 51 of the upper area inner pillar Au and the lower area inner pillar Ad are provided on the connection plate 51 and the connection member 52 in a state of being sandwiched by the pair of connection members 52. The bolts 55 are joined and connected in a state where the bolts 55 are inserted into the insertion holes.

Since the pair of connecting members 52 are made of a pair of channel steels with webs facing each other, even when a horizontal load is applied to the connecting members 52, the pair of connecting members 52 are sufficient for the horizontal load. The proof stress is exerted, and the horizontal shift between the upper area inner pillar Au and the lower area inner pillar Ad is reliably restrained.

On the upper area inner side pillar Au side, the insertion hole 52a of the bolt 55 formed in the connecting member 52 is formed as a long hole that is long in the vertical direction, and other than that formed in the joining plate 51 and the connecting member 52. An insertion hole (not shown) for the bolt 55 is formed as a round hole. As a result, the bolt 55 inserted in the long hole insertion hole 52a can be freely displaced along the vertical direction. Therefore, in the connecting member 52, the distance in the up-down direction between the joint portion of the upper area inner side pillar Au to the joint plate 51 and the joint portion of the lower area inner side pillar Ad to the joint plate 51 becomes variable, and the upper area inner side The transmission of the vertical load from the pillar Au to the lower area inner pillar Ad is reliably prevented. Further, the horizontal displacement of the bolt 55 that joins the connection plate 51 and the coupling member 52 is constrained by the wall surface in the width direction of the insertion hole through which the bolt 55 is inserted. Therefore, the horizontal shift from the upper area inner pillar Au to the lower area inner pillar Ad is reliably restrained.

In addition, as shown in FIG. 17, the temporary joining means 50 described above is installed between the lower end portion of the upper area inner pillar Au and the upper end portion of the lower area inner pillar Ad in the vicinity thereof. A plurality of temporary padding members 57 may be interposed between the plurality of arranged connecting members 52. Thus, when the middle layer area bottom frame portion 21a and the uppermost layer area bottom frame portion 31a are constructed, both the temporary padding member 57 that functions as a support work and the temporary joining means 50 that prevents horizontal displacement are provided. Can be installed to build the middle-layer area bottom frame part 21a and the top-layer area bottom frame part 31a in a stable state, and then build the remaining middle-layer area frame part 21 and top-layer area frame part 31. In doing so, it is possible to remove only the temporary padding member 57 and prevent the load from being transferred from the upper area inner pillars Au to the lower area inner pillars Ad while preventing horizontal displacement.

Further, as shown in FIG. 19, the temporary joining means 50 connects the upper area inner side pillar Au and the lower area inner side pillar Ad by welding by interposing a packing member 60 therebetween. Prior to executing the inner pillar connecting step, a commercially available adjusting jig J is used to connect the upper and lower connecting plates 51 by the jig J, and the upper area inner pillar Au and the lower area inner pillar Au are connected. It is possible to re-correct the steel frame building of the pillar Ad.

[Another embodiment]
Another embodiment of the present invention will be described. The configurations of the respective embodiments described below are not limited to being applied individually, but may be applied in combination with the configurations of other embodiments.

(1) In the above-described embodiment, as shown in FIG. 9, after all the area frame parts 11, 21, 31 in the plurality of areas 10, 20, 30 are constructed, all the plurality of areas 10, 20, Although the inner pillar connecting step is executed for each of the 30 in order from the top to connect the inner pillars 12, 22, 32 to each other, the temporary member removing step is executed to remove the temporary diagonal member 35. The execution order of the inner column connecting step and the temporary member removing step for each area 10, 20, 30 may be changed appropriately.

(2) In the above-described embodiment, in each area building process, the area bottom frame members 11a, 21a, 31a are attached to the outer pillars 3 with the support 70 and the temporary padding member 57 supporting the vertical load being installed from below. The remaining area frame parts 11, 21, 31 were constructed in a state of being installed between them, and after the construction of the area bottom frame parts 11a, 21a, 31a, the support work 70 and the temporary padding member 57 were removed. However, the removal timing of the support 70 and the temporary padding member 57 may be changed as appropriate, and may be removed after the remaining area frame parts 11, 21, 31 are constructed, for example.

(3) In the above-described embodiment, in the middle layer area building process and the uppermost layer area building process, the upper area inner pillars Au (22, 32) in the upper areas 20, 30 to be built and the lower side therebelow. Although the temporary joining means 50 is interposed between the lower area inner pillars Ad (12, 22) of the areas 10 and 20 to restrain the horizontal displacement, the temporary joining means 50 may be omitted as appropriate. Thus, the upper area inner pillar Au and the lower area inner pillar Ad may be completely separated.

(4) In the above embodiment, the connecting member 52 provided in the temporary joining means 50 is a pair of channel steels with webs facing each other. However, for example, the connecting member 52 is made of a single channel steel. The configuration of can be modified appropriately.

(5) In the above-described embodiment, in order to prevent the vertical load from being transmitted from the upper area inner pillar Au to the lower area inner pillar Ad, the upper area inner pillar Au side bolt 55 formed in the connecting member 52 is inserted. Although only the hole 52a is elongated in the vertical direction, the insertion hole of the bolt 55 formed in the joining plate 51 on the upper area inner side column Au side may be an elongated hole in the vertical direction or the inside of the lower area. On the pillar Ad side, the insertion holes of the bolts 55 formed in the connection plate 52 and the connection plate 51 may be elongated holes that are long in the vertical direction. Further, instead of using the insertion hole as a long hole, the vertical direction from the upper area inner side pillar Au to the lower area inner side pillar Ad can be obtained by another structure, for example, by configuring the connecting member 52 itself to be vertically expandable and contractible. The transmission of load may be prevented.

3 Outer pillar 5 Suspended structure 8 Columnless space 10 Bottom layer area
11 Bottom layer area frame (area frame)
11a Bottom layer frame structure part (area bottom frame structure part)
12 Inner pillar 15 Temporary diagonal member (temporary member)
20 Middle class area
21 Middle-layer area frame (area frame)
21a Middle-layer area bottom frame (area bottom frame)
22 Inner pillar 25 Temporary diagonal member (temporary member)
30 Top layer area
31 Top layer area frame section (area frame section, upper frame section)
31a Top floor area bottom frame section (area bottom frame section)
32 Inner pillar 35 Temporary diagonal member (temporary member)
50 Temporary Joining Means 51 Connection Plate 52 Coupling Member 52a Insertion Hole 55 Bolt 57 Temporary Space Packing Member (Supporting Work)
70 Support work Ad Lower area inner pillar (Inner pillar of lower area)
Au upper area inside pillar (upper area inside pillar)

Claims (7)

A method of constructing a suspension structure part in which a suspension structure part in which an inner column is suspended and supported by an upper frame part erected between outer columns is constructed on a pillarless space,
The suspension structure is divided into a plurality of areas in the vertical direction, and the inner area is divided into upper and lower inner pillars in order from the bottom for each of the plurality of areas. Execute the area building process to build the frame part,
In the area building process executed for each of the plurality of areas, an area bottom frame structure part to which a temporary member for supporting the vertical load transmitted to the inner pillar to the outer pillar is added is provided on the bottom side of the area. After building, build the remaining area frame on the area bottom frame,
In each of the plurality of areas constructed by executing the area constructing step, after performing an inner pillar connecting step of connecting the inner pillar to an upper inner pillar suspended and supported by the upper frame portion, the temporary installation is performed. A method for constructing a suspended structure that performs a temporary member removal process of removing a member. 2. The inner pillar connecting step and the temporary member removing step are sequentially executed from the top for each of all the areas after the area building step is executed to build all of the plurality of areas. Construction method of the suspension structure part. In the area building step, the area bottom frame structure is constructed in a state of being installed between the outer pillars with a supporting structure installed to support a vertical load from below, and after the area bottom frame structure is constructed, The method for constructing a suspended structure according to claim 1 or 2, wherein the remaining area frame part is constructed in a state in which the supporting work is removed. In the area building step of building the upper area directly above the lower area of the plurality of areas, while providing a temporary joining means for temporarily joining the inner pillar of the lower area and the inner pillar of the upper area, The temporary joining means is configured to restrain a horizontal shift between the upper area and the lower area without transmitting a vertical load on the upper area side to the lower area. The construction method of the hanging structure part according to any one of 1 to 3. The temporary joining means includes upper and lower connecting plates extending outward from a plurality of outer peripheral surfaces of the lower end of the inner pillar of the upper area and the upper end of the inner pillar of the lower area, respectively. The method for constructing a hanging structure according to claim 4, wherein the suspension structure is constructed so as to be sandwiched by a pair of connecting members which are bolted to the upper and lower connecting plates and connected. The method for constructing a hanging structure according to claim 5, wherein the pair of connecting members are made of a pair of channel steels with webs facing each other. 7. The suspension structure according to claim 5, wherein at least one side of each of the upper and lower connection plates has an insertion hole for a bolt that joins the connecting member to the connection plate as a vertically long hole. Part construction method.

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