JP2021181735A - Shaft wall unit and shaft space formation method - Google Patents

Abstract

To reduce aerial work in construction to form shaft space.SOLUTION: A shaft wall unit 101 includes an upper horizontal member 11 formed so that it can be erected on a girder 2, a plate-shaped member 21 fixed to the upper horizontal member 11 and forming the shaft space S, a lower horizontal member 31 which is arranged below the upper horizontal member 11 in a state where the upper horizontal member 11 is erected on the girder 2 and supports the plate-shaped member 21, and a support member 41 suspended from the upper horizontal member 11 and supporting the lower horizontal member 31.SELECTED DRAWING: Figure 2

Description

The present invention relates to a shaft wall unit and a method for forming a shaft space.

In a multi-story building, a continuous vertical hole over multiple floors as a space for raising and lowering an elevator cage, a space for passing pipes that guide fluids such as water and gas, or a space for passing electric trunk lines. A shaped space (also called "shaft space") is provided. The shaft space is formed by the shaft walls installed on each floor. Patent Document 1 proposes using a preformed plate-shaped member (precast material, ALC panel, decorative extrusion molding plate, etc.) as a shaft wall in an elevator shaft space.

In the construction procedure disclosed in Patent Document 1, first, an opening through which an elevator cage can pass is provided on the floor of each floor in the building. Next, the horizontal lumber is fixed around the opening on the lower surface of the floor, and the horizontal lumber is fixed to the lower surface of the roof in the building. Next, the plate-shaped member is fixed to the horizontal member to form an elevator shaft space.

Japanese Unexamined Patent Publication No. 2002-308547

In the method disclosed in Patent Document 1, in addition to the work of fixing the horizontal member to the floor or roof, the work of fixing the plate-shaped member to the horizontal member needs to be performed on the scaffolding assembled from the bottom of the elevator pit or the like. be. Working on scaffolding is aerial work and is dangerous.

An object of the present invention is to reduce aerial work in construction for forming a shaft space.

The present invention is a shaft wall unit for forming a continuous shaft space over a plurality of floors in a multi-story building in which the beam is a steel frame structure, and is an upper horizontal member formed so as to be able to be erected on the beam. A plate-shaped member fixed to the upper horizontal member to form a shaft space, and a lower portion supported by the upper horizontal member placed below the upper horizontal member in a state where the upper horizontal member is erected on the beam. It includes a side horizontal member and a support member suspended from the upper horizontal member and supporting the lower horizontal member.

Further, the present invention is a shaft space forming method for forming a continuous shaft space over a plurality of floors in a multi-story building in which a beam is a steel frame structure, and is used for an upper horizontal member and an upper horizontal member. Assemble a shaft wall unit including a fixed plate-shaped member, a lower horizontal member that supports the plate-shaped member, and a support member that is suspended from the upper horizontal member and supports the lower horizontal member. The upper horizontal member of the shaft wall unit is erected on the beam so that the side horizontal member is arranged below the upper horizontal member, and the shaft space is formed by using the plate-shaped member.

According to the present invention, it is possible to reduce the aerial work in the construction for forming the shaft space.

(A) is a vertical sectional view of a multi-story building having a shaft space formed by using the shaft wall unit according to the present embodiment, and (b) is different from FIG. 1 (a). It is a vertical sectional view of a building seen from a direction, and (c) is a plan sectional view (upward view) along the IC-IC line shown in FIG. 1 (a). (A) is a vertical front view of the shaft wall unit, (b) is a plan sectional view (downward view) of the shaft wall unit, and (c) is a line IIC-IIC shown in FIG. 2 (a). It is a vertical sectional view along. (A) is a vertical sectional view of a shaft wall unit different from the shaft wall unit shown in FIG. 2, and (b) is a plan sectional view (downward view) of the shaft wall unit shown in FIG. 3 (a). Yes, (c) is a vertical sectional view taken along the line IIIC-IIIC shown in FIG. 3 (a). It is an enlarged view of the IV part in the plan sectional view (look-up view) shown in FIG. 1 (c).

Hereinafter, the shaft wall unit (hereinafter, simply referred to as “unit”) and the shaft space forming method according to the embodiment of the present invention will be described with reference to the drawings. Here, a case where the shaft space is a so-called elevator shaft space for raising and lowering an elevator cage will be described, but the present invention provides a pipe shaft space for passing a pipe that guides fluids such as water and gas, and an electric trunk line. It can also be applied to shaft spaces other than elevator shafts, such as an electric shaft space for passing through and a staircase shaft space for providing stairs.

First, with reference to FIG. 1, a multi-story building 1 having a shaft space S formed by using the unit according to the present embodiment will be described. 1 (a) is a vertical cross-sectional view of the building 1, and FIG. 1 (b) is a vertical cross-sectional view of the building 1 seen from a direction different from that of FIG. 1 (a). FIG. 1 (c) is a plan sectional view (look-up view) along the IC-IC line shown in FIGS. 1 (a) and 1 (b). In the building 1, the girder 2 is a steel structure. The girder 2 is erected on a pillar (not shown). The skeleton of the building 1 is formed by the girder 2 and the columns (not shown).

As shown in FIG. 1, the shaft space S is formed in a pit-house shape and is continuous over a plurality of floors. Units for forming the shaft space S are provided on each floor of the building 1. Here, the units 101a, 102a, 103a, 104a provided on the lower floor Fa in the building 1 and the units 101b, 102b provided on the floor one level above the lower floor Fa (hereinafter referred to as "upper floor") Fb. , 103b, 104b, and the like. In the following, when the units 101a and 101b are generically referred to, they are simply referred to as "unit 101". The same applies to the units 102a and 102b, the units 103a and 103b, and the units 104a and 104b.

Units 101, 102, 103, 104 are the upper horizontal members 11, 12, 13, 14, respectively, and a plurality of plate-shaped members 21, 22, 23 fixed to the upper horizontal members 11, 12, 13, 14, respectively. , 24, and lower horizontal members 31, 32, 33, 34 arranged below the upper horizontal members 11, 12, 13, 14. The lower horizontal members 31, 32, 33, 34 support the plate-shaped members 21, 22, 23, 24, respectively.

The upper horizontal members 11 and 12 of the units 101a and 102a provided on the lower floor Fa are erected on the girder 2 of the lower floor Fa. The upper horizontal members 13 and 14 of the units 103a and 104a are erected on the upper horizontal members 11 and 12 of the units 101a and 102a. Similarly, the upper horizontal members 11 and 12 of the units 101b and 102b provided on the upper floor Fb are erected on the girder 2 of the upper floor Fb, and the upper horizontal members 13 and 14 of the units 103b and 104b are the units 101b. It is erected on the upper horizontal members 11 and 12 of 102b. That is, the upper horizontal members 11 and 12 are so-called small beams, and the upper horizontal members 13 and 14 are so-called grandchild beams. The upper horizontal members 11, 12, 13, and 14 are, for example, H-shaped steel. Hereinafter, the direction in which the girder 2 extends is referred to as a “beam direction”.

Floor deck plates 3 that serve as scaffolding for workers and also serve as concrete formwork to be placed on the floor are fixed to the girders 2 and the upper horizontal members 11, 12, 13, and 14. In the top view of FIG. 1 (c), the floor deck plate 3 is not shown.

The plate-shaped members 21 and 22 of the units 101 and 102 are provided at intervals in the beam direction, and the plate-shaped members 23 and 24 of the units 103 and 104 are between the plate-shaped members 21 and 22 of the units 101 and 102. It is provided over. The shaft space S is formed by the plate-shaped members 21, 22, 23, 24. In the unit 104, an opening 4 for allowing a person to enter and exit an elevator cage (not shown) that moves up and down the shaft space S is formed by a plate-shaped member 24. The opening 4 may be provided on only one surface in one shaft space S, but may be provided on two opposing surfaces depending on the use of the building 1.

The plate-shaped members 21, 22, 23, 24 are members containing cement, and are, for example, extruded cement plates (Extruded Cement Panels) formed by extrusion molding using cement, a siliceous raw material, and a fibrous raw material as main raw materials. ECP). The plate-shaped members 21, 22, 23, 24 may be lightweight aerated concrete (ALC) panels made by foaming cement, silica stone, quicklime, or aluminum powder as a main raw material.

The lower horizontal members 31, 32, 33, 34 of the units 101a, 102a, 103a, 104a provided on the lower floor Fa are on the floor beam 5 of the building 1 or on the concrete floor in the unit provided in the lowest layer. It is fixed to the floor with bolts or the like. The lower horizontal members 31, 32, 33, 34 of the units 101b, 102b, 103b, 104b provided on the upper floor Fb are the upper horizontal members of the units 101a, 102a, 103a, 104a provided on the lower floor Fa. It is fixed to the upper ends of 11, 12, 13, and 14.

The lower horizontal members 31, 32, 33, 34 are also used as a concrete stopper (stop form) for stopping the concrete (not shown) placed for the floor of the building 1. The lower horizontal members 31, 32, 33, 34 are, for example, channel steels having openings facing the floor deck plate 3 side.

In the shaft space forming method according to the present embodiment, the plate-shaped members 21 and 22 are fixed to the upper horizontal members 11 and 12 in a state where the upper horizontal members 11 and 12 are not erected on the girder 2, and the units 101 and 102 are attached. assemble. After that, the units 101 and 102 are lifted and the upper horizontal members 11 and 12 are erected on the girder 2. Further, the plate-shaped members 23 and 24 are fixed to the upper horizontal members 13 and 14 in a state where the upper horizontal members 13 and 14 are not erected on the upper horizontal members 11 and 12, and the units 103 and 104 are assembled. After that, the units 103 and 104 are lifted and the upper horizontal members 13 and 14 are erected on the upper horizontal members 11 and 12. Therefore, the work of fixing the plate-shaped members 21, 22, 23, 24 to the upper horizontal members 11, 12, 13, 14 can be performed in a low place with a solid scaffolding such as a groundwork yard in the construction site. can. Therefore, it is possible to reduce the work at heights in the work for forming the shaft space S, such as the work on the scaffolding assembled in the shaft space S, and it is possible to improve the safety of the work.

Further, in the units 101, 102, 103, 104, since the lower horizontal members 31, 32, 33, 34 are concrete stoppers, the concrete stoppers are constructed with the formation of the shaft space S. Therefore, the construction period of the building 1 can be shortened.

Next, the structures of the units 101 and 104 will be described in detail with reference to FIGS. 2 to 4. Since the structures of the units 102 and 103 are substantially the same as the structures of the units 101, their description will be omitted.

FIG. 2A is a vertical front view of the unit 101, and FIG. 2B is a plan sectional view (downward view) of the unit 101. 2 (a) and 2 (b) show the state before the upper horizontal lumber 11 is erected on the girder 2 (see FIG. 1). FIG. 2 (c) is a vertical cross-sectional view taken along the line IIC-IIC shown in FIG. 2 (a).

As shown in FIGS. 2A to 2C, a plurality of plate-shaped members 21 are fixed to the upper horizontal member 11 via the upper bolt 11c, the upper clip 11b, and the upper through member 11a. Specifically, the upper through member 11a is joined to the upper horizontal member 11 by welding, a plurality of upper clips 11b are joined to the upper through member 11a by welding, and the upper part of the plurality of plate-shaped members 21 is joined to the upper clip 11b. It is joined using the upper bolt 11c. The space between the plate-shaped members 21 is closed by a joint seal (not shown). The upper through material 11a is, for example, an angle material.

When the upper horizontal member 11 is lifted with only the upper part of the plate-shaped member 21 fixed to the upper horizontal member 11, tensile stress is generated in the upper part of the plate-shaped member 21 due to its own weight, and the upper part of the plate-shaped member 21 May be damaged and the plate-shaped member 21 may fall. In particular, when a member containing cement is used as the plate-shaped member 21, the tensile strength of the plate-shaped member 21 is smaller than the compressive strength, and the plate-shaped member 21 is more likely to fall.

Therefore, in the present embodiment, the unit 101 is provided with a support structure for supporting the plate-shaped member 21 from below in a state before the upper horizontal member 11 is erected on the girder 2. Specifically, the unit 101 is suspended from the lower horizontal member 31 that supports the plurality of plate-shaped members 21 and the upper horizontal member 11 in a state before the upper horizontal member 11 is erected on the girder 2. It is provided with a plurality of support members 41 for supporting the lower horizontal member 31. Therefore, the weight of the plate-shaped member 21 is received by the lower horizontal member 31 supported by the support member 41, and the load can be supported. Therefore, the tensile stress generated in the plate-shaped member 21 can be reduced, and the upper horizontal member 11 to which the plate-shaped member 21 is fixed can be lifted. As a result, the unit 101 assembled in a low place can be easily and safely lifted, and the shaft space S (see FIG. 1) can be easily formed.

The plurality of plate-shaped members 21 are fixed to the lower horizontal member 31 via the lower bolt 31c, the lower clip 31b, and the lower through member 31a. Specifically, the lower through member 31a is joined to the lower horizontal member 31 by welding, and a plurality of lower clips 31b are joined to the lower through member 31a by welding. The lower part of the plate-shaped member 21 is joined to the lower clip 31b by using the lower bolt 31c. The lower through material 31a is, for example, an angle material.

The support member 41 is provided along the plate-shaped member 21. The upper end of the support member 41 is joined to the upper horizontal member 11 by welding. A plate 41a projecting toward the lower horizontal member 31 is provided near the lower end of the support member 41, and the plate 31d projecting toward the support member 41 is provided on the lower horizontal member 31. It is provided. The plate 41a and the plate 31d are joined by using bolts 41b. That is, the lower horizontal member 31 is fixed to the support member 41 via the plate 31d, the bolt 41b, and the plate 41a.

On the support member 41 and the plate 41a, bolts (not shown) for fixing the lower horizontal member 31 to the floor beam 5 (see FIG. 1) or the upper horizontal member 11 of the unit 101 on the next lower floor (not shown). A bolt hole 41c is formed through which the bolt hole 41c can be inserted. The bolt hole 41c is a loose hole extending in the vertical direction. Therefore, the position (level) of the lower horizontal member 31 can be adjusted with respect to the upper horizontal member 11 of the unit 101 on the floor beam 5 or the next lower floor, and the assembly error of the unit 101 and the building It is possible to tolerate the frame construction error (steel frame construction error) in 1.

In the support member 41, the upper horizontal member 11 was erected on the girder 2 (see FIG. 1), and the lower horizontal member 31 was fixed to the floor beam 5 and the like or the upper horizontal member 11 of the unit 101 on the next lower floor. After that, in order to finish the role of suspending the lower horizontal member 31, the lower horizontal member 31 is cut and removed above the plate 41a. The cut portion of the support member 41 is preferably at a position (level) where the upper end of the remaining portion is buried in the concrete placed for the floor of the building 1 and hidden.

FIG. 3A is a vertical front view of the unit 104, and FIG. 3B is a plan sectional view (downward view) of the unit 104. FIGS. 3A and 3B show a state before the upper horizontal lumber 14 is erected on the upper horizontal lumbers 11 and 12 of the units 101 and 102. FIG. 3 (c) is a vertical cross-sectional view taken along the line IIIC-IIIC shown in FIG. 3 (a).

As shown in FIGS. 3A to 3C, a long plate member 24a and a short plate member 24b having different dimensions in the vertical direction are used for the plate-shaped member 24 of the unit 104. The long plate member 24a and the short plate member 24b are fixed to the upper horizontal member 14 via the upper bolt 14c, the upper clip 14b and the upper through member 14a, and the lower end of the short plate member 24b is the long plate member 24a. It is located above the bottom edge. Since the upper bolt 14c, the upper clip 14b, and the upper through material 14a are substantially the same as the upper bolt 11c, the upper clip 11b, and the upper through material 11a in the unit 101, their description is omitted here.

A plurality of long plate members 24a are arranged at intervals from each other. The short plate member 24b is arranged between the long plate members 24a, and an opening 4 for a person to enter and exit is formed by the lower end of the short plate member 24b and the side end of the long plate member 24a. A reinforcing member 54a is provided between the long plate member 24a and the short plate member 24b.

The long plate member 24a is fixed to the lower horizontal member 34 via the lower bolt 34c, the lower clip 34b, and the lower through member 34a. The lower horizontal member 34 is fixed to the support member 44 via the backing plate 34d, the bolt 44b, and the backing plate 44a. The support member 44 is suspended from the upper horizontal member 11 and supports the lower horizontal member 34. Therefore, the weights of the long plate member 24a and the short plate member 24b are received by the lower horizontal member 31 supported by the support member 44. Bolt holes 44c are formed in the support member 44 and the plate 44a.

The lower bolt 34c, the lower clip 34b, the lower through material 34a, the backing plate 34d, the bolt 44b, the backing plate 44a and the bolt hole 44c are the lower bolt 31c, the lower clip 31b and the lower through material 31a in the unit 101. , The plate 31d, the bolt 41b, the plate 41a, and the bolt hole 41c (see FIG. 2), and thus the description thereof will be omitted here.

The reinforcing member 54a extends to the lower horizontal member 34 along the side end of the long plate member 24a. A reinforcing material 54b is bridged between adjacent reinforcing materials 54a along the lower end of the short plate member 24b. The frame of the opening 4 is formed by the reinforcing members 54a and 54b. The reinforcing materials 54a and 54b are, for example, angle materials. The short plate member 24b is supported by depositing a load on the reinforcing member 54b.

The unit 104 includes a slip prevention material 64 provided across the opening 4. The slip prevention member 64 is attached to the reinforcing member 54a forming the frame of the opening 4 by using the catch clamp 64a, and prevents the displacement of the structural surface of the long plate member 24a. Therefore, it is possible to reduce the runout and fluttering of the long plate member 24a when the unit 104 is lifted. Therefore, when the unit 104 is provided on each floor of the building 1, the positions of the long plate member 24a and the lower horizontal member 34 can be easily aligned.

The slip prevention material 64 also serves as a handrail for workers and a fall prevention fence to the shaft space S side. The slip prevention material 64 is a temporary material such as a single pipe.

As shown in FIG. 1, the upper horizontal members 11, 12, 13, 14 are arranged on the side opposite to the shaft space S with respect to the plate-shaped members 21, 22, 23, 24. Therefore, the inside of the shaft space S is a member (plate-shaped members 21, 22, 23, 24 and lower horizontal members 31, 32, 33 in which concrete is cast inside) that does not require spraying work of a fireproof coating. Since it is possible to construct only 34) continuously, there is no need to assemble a scaffold in the shaft space S and perform the work of spraying the fireproof coating. That is, the work of spraying the fireproof coating on the upper horizontal members 11, 12, 13, 14 can be performed on the floor deck plate 3 having a stable scaffolding, which is partitioned from the shaft space S by each unit. Therefore, the safety of work can be improved.

FIG. 4 is an enlarged view of the IV portion in the plan sectional view (look-up view) shown in FIG. 1 (c). As shown in FIG. 4, the plate-shaped member 21 of the unit 101 and the plate-shaped member 24 of the unit 104 are arranged at intervals. This causes an error when constructing the frame in the building 1 (how to build the steel frame) or when assembling the units 101 and 104, and when the units 101 and 104 are installed on each floor of the building 1, the plate-shaped member 21 and the plate-like shape are formed. This is because there is a possibility of interference with the member 24. By designing the units 101 and 104 so that the plate-shaped member 21 of the unit 101 and the plate-shaped member 24 of the unit 104 are arranged at intervals, the assembly error of the units 101 and 104 and the framework in the building 1 are obtained. Construction error (steel frame construction error) can be tolerated. The distance between the plate-shaped member 21 of the unit 101 and the plate-shaped member 24 of the unit 104 can be set to, for example, 15 mm or more and 30 mm or less.

As shown in FIGS. 2 and 4, at the side end of the plate-shaped member 21 in the unit 101, between the plate-shaped member 21 and the plate-shaped member 24 in a state where the units 101 and 104 are provided on each floor of the building 1. The closing member 61 arranged in is arranged. The closing member 61 closes between the plate-shaped member 21 and the plate-shaped member 24. Although not shown, between the plate-shaped member 21 of the unit 101 and the plate-shaped member 23 of the unit 103, between the plate-shaped member 22 of the unit 102 and the plate-shaped member 23 of the unit 103, and the plate-shaped member of the unit 102. The space between the member 22 and the plate-shaped member 24 of the unit 104 is also closed by the closing member 61. Therefore, the airtightness of the shaft space S can be improved. Thereby, the fire resistance performance of the shaft space S can be improved. The closing member 61 is, for example, a urethane gasket.

Next, the shaft space forming method according to the present embodiment will be described.

First, an area for assembling the units 101, 102, 103, 104 is provided in the site where the building 1 is constructed, and the units 101, 102, 103, 104 are assembled (unit assembly step). The assembly of the units 101, 102, 103, 104 is performed in parallel with the construction of the frame (construction of the steel frame) in the building 1.

In assembling the unit 101, first, the upper horizontal lumber 11 is placed on a ground lumber pedestal (not shown), and the ground lumber pedestal and the upper horizontal lumber 11 are fixed so as not to fall by, for example, Bullman. Next, the upper end of the support member 41 is joined to the upper horizontal member 11 by welding, and the support member 41 is suspended from the upper horizontal member 11. Next, the lower horizontal member 31 is fixed to the lower end of the support member 41. Specifically, the plate 41a provided in advance on the support member 41 and the plate 34d provided in advance on the lower horizontal member 31 are joined by using bolts 44b. Next, with the weight of the plate-shaped member 21 deposited in the lower horizontal member 31, the plate-shaped member 21 is fixed to the upper horizontal member 11 and the lower horizontal member 31, and the adjacent plate-shaped members 21 are adjacent to each other. Close the space with a joint seal. Next, the closing member 61 is arranged at the side end of the plate-shaped member 21. As described above, the assembly of the unit 101 is completed. Since the assembly procedure of the units 102 and 103 is substantially the same as the assembly procedure of the unit 101, the description thereof will be omitted here.

In the assembly of the unit 104, the upper horizontal member 14 is placed on the ground assembly frame, and the support member 44 is suspended from the upper horizontal member 14. Next, the lower horizontal member 34 is fixed to the support member 44. Next, the long plate member 24a is fixed to the upper horizontal member 14 and the lower horizontal member 34 in a state where the weight of the long plate member 24a is deposited in the lower horizontal member 34. Next, the reinforcing material 54b is bridged between the reinforcing materials 54a provided between the adjacent long plate members 24a to form the frame of the opening 4. Then, the short plate member 24b is fixed to the upper horizontal member 14 with the load deposited on the reinforcing member 54b. As described above, the assembly of the unit 101 is completed.

In the shaft space forming method, after assembling the units 101, 102, 103, 104, the units 101, 102, 103, 104 are provided on each floor of the building 1 to form the shaft space S (shaft space forming step). Here, a procedure for providing units 101b, 102b, 103b, 104b on the upper floor Fb will be described.

For the installation of the units 101b, 102b, 103b, 104b on the upper floor Fb, the units 101a, 102a, 103a, 104a are provided on the lower floor Fa, and the frame including the girder 2 on the upper floor Fb is constructed (steel frame construction). This is done after the floor deck plate 3 on the upper floor Fb as a work floor has been laid. The girder 2 and the floor deck plate 3 may function as a work floor and may be in a temporarily fixed state.

First, the upper horizontal members 11 and 12 of the assembled units 101b and 102b are lifted by using a lifting machine such as a crane, and the upper horizontal members 11 and 12 are erected on the girder 2. At this time, the upper horizontal members 11 and 12 are erected on the girder 2 so that the upper horizontal members 11 and 12 are arranged on the side opposite to the shaft space S with respect to the plate-shaped members 21 and 22.

Next, the lower horizontal members 31 and 32 of the units 101b and 102b are fixed to the upper ends of the upper horizontal members 11 and 12 in the units 101a and 102a provided on the lower floor Fa.

Next, the units 103b and 104b are lifted, and the upper horizontal members 13 and 14 of the units 103b and 104b are erected on the upper horizontal members 11 and 12 of the units 101b and 102b. At this time, similarly to the units 101b and 102b, the upper horizontal members 13 and 14 are placed on the upper side so that the upper horizontal members 13 and 14 are arranged on the opposite side of the shaft space S with respect to the plate-shaped members 23 and 24. It is erected on the horizontal members 11 and 12. At this time, the plate-shaped member 24 of the unit 104b is pressed against the closing member 61 of the unit 101b and the closing member of the unit 102b (not shown). Similarly, the plate-shaped member 23 of the unit 103b is pressed against the closing member 61 of the unit 101b and the closing member of the unit 102b (not shown).

Next, the lower horizontal members 33, 34 of the units 103b, 104b are fixed to the upper ends of the upper horizontal members 13, 14 in the units 103a, 104a provided on the lower floor Fa.

Next, the support members 41 and 44 of the units 101b and 104b are cut and removed at the predetermined level described above. Similarly, the support members (not shown) of the units 102b and 103b are also cut and removed. Next, the lower horizontal members 31, 32, 33, 34 of the units 101b, 102b, 103b, 104b are used as concrete stoppers (fixing formwork), concrete is placed on the floor of the building 1, and the support member 41 is placed. , 44 The remaining part is buried in concrete.

As a result, the formation of the shaft space S in the upper floor Fb is completed. By repeating the construction of the frame (construction of the steel frame) and the formation of the shaft space S, the continuous shaft space S is completed over all the floors of the building 1.

According to the above embodiments, the following actions and effects are exhibited.

In the units 10, 102, 103, 104 according to the present embodiment, the plate-shaped members 21 and 22 are fixed to the upper horizontal members 11 and 12 formed so as to be erected on the girder 2, and the plate-shaped members 21 and 22 are fixed to the upper horizontal members 11 and 12. The plate-shaped members 23 and 24 are fixed to the upper horizontal members 13 and 14 formed so as to be erected. Therefore, the work of fixing the plate-shaped members 21, 22, 23, 24 to the upper horizontal members 11, 12, 13, 14 can be performed in a low place with a solid scaffolding such as a groundwork yard in the construction site. can. Therefore, it is possible to reduce the aerial work in the construction for forming the shaft space S, and it is possible to enhance the safety of the construction.

Further, in the units 10, 102, 103, 104, the lower horizontal member 31 supports the plate-shaped member 21, and the support member 41 suspended from the upper horizontal member 11 supports the lower horizontal member 31. .. Therefore, the weight of the plate-shaped member 21 is received by the lower horizontal member 31 supported by the support member 41 to support the load. Therefore, the tensile stress generated in the plate-shaped member 21 can be reduced, and the upper horizontal member 11 to which the plate-shaped member 21 is fixed can be lifted. As a result, the unit 101 assembled in a low place can be easily and safely lifted, and the shaft space S can be easily formed.

Further, in the units 101, 102, 103, 104, the lower horizontal member 31 also serves as a concrete stopper for stopping the concrete placed for the floor of the building 1. Therefore, a concrete stopper is constructed with the formation of the shaft space S. Therefore, it can contribute to shortening the construction period and rationalizing the construction of the building 1.

Further, in the unit 104, a displacement preventing material 64 for preventing the displacement of the structural surface of the long plate member 24a is provided straddling the opening 4. Therefore, it is possible to reduce the runout and fluttering of the long plate member 24a when the unit 104 is lifted. Therefore, when the unit 104 is provided on each floor of the building 1, the positions of the long plate member 24a and the lower horizontal member 34 can be easily aligned.

In the units 101, 102, 103, 104, the bolt holes 41c and 44c through which bolts can be inserted are loose holes extending in the vertical direction. Therefore, the positions of the lower horizontal members 31, 32, 33, 34 with respect to the upper horizontal members 11, 12, 13, 14 of the units 101, 102, 103, 104 on the floor beam 5 or the next lower floor ( Level) can be adjusted. Therefore, it is possible to tolerate an assembly error of the units 101, 102, 103, 104 and a frame construction error (steel frame construction error) in the building 1.

Further, in the building 1, the upper horizontal members 11, 12, 13, 14 are arranged on the side opposite to the shaft space S with respect to the plate-shaped members 21, 22, 23, 24. Therefore, the inside of the shaft space S is a member (plate-shaped members 21, 22, 23, 24 and lower horizontal members 31, 32, 33 in which concrete is cast inside) that does not require spraying work of a fireproof coating. Since it is possible to construct only 34) continuously, there is no need to assemble a scaffold in the shaft space S and perform the work of spraying the fireproof coating. That is, the work of spraying the fireproof coating on the upper horizontal members 11, 12, 13, 14 is separated from the shaft space S by the units 101, 102, 103, 104, and the scaffolding is on the stable floor deck plate 3. This can be done at, which improves work safety.

Further, at the side end of the plate-shaped member 21 in the unit 101, a closing member 61 arranged between the plate-shaped member 21 and the plate-shaped member 24 in a state where the units 101 and 104 are provided on each floor of the building 1 is provided. Be placed. The closing member 61 closes between the plate-shaped member 21 and the plate-shaped member 24. Therefore, the airtightness of the shaft space S can be improved, and the pit-house section can be formed without losing the fire resistance.

According to the shaft space forming method according to the present embodiment, after assembling the units 101, 102, 103, 104, the upper horizontal members 11 and 12 are erected on the girder 2, and the upper horizontal members 13 and 14 are used as the upper horizontal members. In order to erection on 11 and 12, the work of fixing the plate-shaped members 21, 22, 23, 24 to the upper horizontal members 11, 12, 13 and 14 was carried out with a solid scaffolding such as the groundwork yard in the construction site. Can be done in low places. Therefore, it is possible to reduce the work at heights in the work for forming the shaft space S, such as the work on the scaffolding assembled in the shaft space S, and it is possible to improve the safety of the work. Further, since it is not necessary to assemble the scaffolding in the shaft space S, the work efficiency is improved.

Further, the welding work required for fixing the plate-shaped member 21 can also be performed at a low place. Therefore, the welding work in the vicinity of the shaft space S can be reduced, and the safety is improved. In addition, the spark drop curing required for welding work in the vicinity of the shaft space S becomes unnecessary, and the labor and cost for installation and dismantling can be reduced.

Further, after the floor deck plate 3 is provided on the upper floor Fb, the units 101b, 102b, 103b, 104b are provided. Therefore, the work of fixing the lower horizontal members 31, 32, 33, 34 of the units 101b, 102b, 103b, 104b to the upper horizontal members 11, 12, 13, 14 of the units 101a, 102a, 103a, 104a is performed on the floor. It can be performed on the deck plate 3 for work, and the safety of work is improved.

Further, the upper horizontal members 11, 12, 13, 14 are arranged on the side opposite to the shaft space S with respect to the plate-shaped members 21, 22, 23, 24. Therefore, the inside of the shaft space S is a member (plate-shaped members 21, 22, 23, 24 and lower horizontal members 31, 32, 33 in which concrete is cast inside) that does not require spraying work of a fireproof coating. Since it is possible to construct only 34) continuously, there is no need to assemble a scaffold in the shaft space S and perform the work of spraying the fireproof coating. That is, the work of spraying the fireproof coating on the upper horizontal members 11, 12, 13, and 14 can be performed on the floor deck plate 3, and the safety of the work is improved.

Further, the shaft space S is formed in parallel with the construction of the frame of the building 1 (how to build the steel frame). Therefore, it is possible to accelerate the start of the main elevator construction as compared with the case of the conventional construction method in which the shaft space S is formed on each floor after the construction of the entire frame of the building 1 (construction of the steel frame) is completed. In addition, the shaft space S and the floor space can be separated at an early stage by using the units 101, 102, 103, 104 along with the construction of the frame (how to build the steel frame), and it is safe to provide the opening curing at an early stage. Sex improves.

In addition, since the units 101, 102, 103, 104 are lifted in parallel with the steel frame construction and installed on each floor, a temporary load for incorporating the plate-shaped members 21, 22, 23, 24 into each floor after the steel frame construction is completed. There is no need to install a taking stage on the outer periphery of the building. Therefore, it is possible to eliminate the construction work and the dismantling work of the temporary stage. As a result, the labor required for the construction work and the dismantling work of the temporary stage can be reduced, and it is not necessary to leave a part to be post-constructed as a useless work in the exterior work, which can contribute to shortening the construction period.

Assembling the units 101, 102, 103, 104 is a repetitive operation in a low place. Therefore, it is possible to learn the worker at an early stage by repeating the action, and it is possible to improve the work rate.

Although the embodiments of the present invention have been described above, the above embodiments are only a part of the application examples of the present invention, and the technical scope of the present invention is limited to the specific configuration of the above embodiments. No.

In the unit 101, a brace may be provided between adjacent support members 41 to prevent the plate-shaped member 21 from being distorted. Similarly, in the units 102, 103, 104, a brace may be provided to prevent the plate-shaped members 22, 23, 24 from being distorted. For the brace, for example, a turnbuckle brace whose length can be adjusted can be used.

When lifting the unit 101, the unit 101 may be tilted due to the eccentricity in the conventional lifting by the hanging piece. Therefore, the upper horizontal member 11 of the unit 101 (for example, the upper flange in the case of H-shaped steel) is used. It is preferable to provide a screw type clamp or the like having a suspension mechanism at a position above the center of gravity, and to lift the clamp through a lifting hook. The lifting hook can be removed from the clamp after the upper horizontal member 11 of the unit 101b is erected on the girder 2 and the lower horizontal member 31 of the unit 101b is fixed to the upper horizontal member 11 of the unit 101a. The same applies to the units 102, 103 and 104.

101, 102, 103, 104 ... Shaft wall unit 1 ... Building 2 ... Girder (beam)
11, 12, 13, 14 ... Upper horizontal member 21, 22, 23, 24 ... Plate-shaped member 31, 32, 33, 34 ... Lower horizontal member 41, 44 ... Support member 61 ... Closing member 64 ... Displacement prevention material S ... Shaft space

Claims (4)

A shaft wall unit for forming a continuous shaft space over multiple floors in a multi-story building whose beams are steel structures.
The upper horizontal lumber formed so as to be erected on the beam,
A plate-shaped member fixed to the upper horizontal member and forming the shaft space,
A lower horizontal member which is arranged below the upper horizontal member in a state where the upper horizontal member is erected on the beam and supports the plate-shaped member, and a lower horizontal member.
A support member suspended from the upper horizontal member and supporting the lower horizontal member.
Shaft wall unit. The lower horizontal member is a concrete stopper for stopping the concrete placed for the floor of the building.
The shaft wall unit according to claim 1. An opening formed by the plate-shaped member for people to enter and exit,
Further provided with a displacement preventing material provided across the opening to prevent displacement of the structural surface of the plate-shaped member.
The shaft wall unit according to claim 1 or 2. It is a shaft space forming method for forming a continuous shaft space over the multiple floors in a multi-story building whose beams are steel frames.
The upper horizontal member, the plate-shaped member fixed to the upper horizontal member, the lower horizontal member that supports the plate-shaped member, and the lower horizontal member suspended from the upper horizontal member. Assemble the shaft wall unit with the supporting member to support,
The upper horizontal member of the shaft wall unit is erected on the beam so that the lower horizontal member is arranged below the upper horizontal member, and the shaft space is formed by using the plate-shaped member. do,
Shaft space formation method.

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