JP2017179934A - How to construct a suspended roof frame - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a construction method of a suspension roof frame that enables a suspension roof frame to be assembled at high accuracy.SOLUTION: A suspension roof frame 1 includes a plurality of outer peripheral columns 20, an outer peripheral beam 33 connecting the outer peripheral columns 20 to each other, a truss beam 31 disposed in a square frame form when seen in a planar view, and a connection member 34 connecting the outer peripheral column 20 with the truss beam 31. A construction method of the suspension roof frame includes: steps S11 to S13 for erecting the outer peripheral column 20 and then connecting the outer peripheral column 20 with the outer peripheral beam 33 in the air; a step S21 for installing a truss beam receiving bent 42 and placing a truss beam connection part 314 that is a part of the truss beam 31 on the truss beam receiving bent 42; steps S22, S23 for spanning the connection member 34 between the outer peripheral column 20 and the truss beam connection part 314; and steps S31, S32 for assembling the truss beam 31 in the air.SELECTED DRAWING: Figure 12

Description

  The present invention relates to a method for constructing a suspended roof frame for forming a large space under a roof of a building.

  Conventionally, a large space roof frame has been required for music halls and indoor stadiums to accommodate various events. As this roof frame, a truss beam structure, an arch structure, a shell structure, and a membrane structure have been developed in order to increase the span between columns. Among them, the arch structure, the shell structure, and the membrane structure have complicated construction procedures and often require a long construction period, and are rarely used as a roof frame. On the other hand, the truss beam structure has been widely adopted as a roof frame because of its clear structural form and easy construction (see Patent Documents 1 and 2).

For example, Patent Document 1 discloses a dome-like structure made of steel truss beams. In this dome-shaped structure, a plurality of truss beams forming an arch shape are arranged substantially in parallel, and a plurality of truss beams are arranged substantially in parallel so as to intersect the truss beams, so that a dome-shaped roof frame is formed. Is formed.
Further, Patent Document 2 discloses a roof frame composed of trussed string beams. The truss string beam is composed of two upper chord members arranged in parallel, one lower chord member arranged along these upper chord members, and a plurality of oblique members connecting the upper chord material and the lower chord material. .

However, in order to construct a large-scale roof frame only with truss beams, a truss beam having a long span and a large beam length (the height of the beam) is necessary to cover the roof surface. Therefore, in order to keep the beams low, it was necessary to support the roof surface with truss beams installed so as to cross each other, or to narrow the interval between adjacent truss beams.
Further, since the truss beams are composed of a large number of members, when a large number of truss beams as in Patent Documents 1 and 2 are arranged, there is a tendency that the number of joints between the members increases and the construction period becomes longer.
In addition, when the roof frame is constructed with only the truss beams, there is a problem that the ceiling height of the indoor space is lowered near the columns and walls near both ends of the truss beams that support the roof surface, and the usability is lowered.
In addition, since the truss beams are composed of a large number of diagonal members, the roof frame using a large number of truss beams as in Patent Documents 1 and 2 increases the number of joints between the diagonal members, making it difficult to ensure construction accuracy. There was a problem of becoming.

Japanese Patent No. 4153885 JP 2011-102500 A

  Suspended roof frames have the background that there are very few examples of implementation and there are few experienced workers, and construction errors in the mounting position of the connecting members that support the suspension of the roof part from the pillars can cause stress and deformation of the roof frame. There was a problem of having a big influence.

  In light of the above, an object of the present invention is to provide a method for constructing a suspended roof frame that can assemble a roof frame with high accuracy.

  The construction method of the suspended roof frame of the first invention is a construction method of a suspended roof frame (for example, a suspended roof frame 1 described later), and the suspended roof frame includes a plurality of outer circumferential columns (for example, an outer circumferential column described later). 20, 20B, 20C), an outer peripheral beam connecting the outer peripheral columns (for example, an outer peripheral beam 33 described later), and a truss beam (for example, a truss beam 31 described later) arranged in a rectangular frame shape in plan view. And a connecting member for connecting the outer peripheral column and the truss beam, and building the outer peripheral column, and then joining the outer peripheral column and the outer peripheral beam in the air (for example, a step described later) S11 to S13) and a supporting work (for example, a truss beam receiving vent 42 to be described later) are installed, and a truss beam joint portion (for example, a truss beam to be described later) is a part of the truss beam on the supporting structure. (For example, the joint portion 314) is disposed (for example, Step S21) described above, a step of constructing the connecting member between the outer peripheral column and the truss beam joint (for example, Steps S22 and S23 described later), and a step of assembling the truss beam in the air ( For example, it is characterized by comprising steps S31 and S32) described later.

According to the present invention, the truss beam joint portion constituting the truss beam is supported by the support work, and the connecting member is lifted by the hoist with the outer peripheral column being built in a predetermined position. Join to the mouth and the outer peripheral column. At this time, the position of the joint portion between the outer peripheral column and the connecting member, or the position in the three-dimensional space of the joint portion between the connecting member and the truss beam joint is measured in the air while being measured with light waves. Thereby, it is possible to accurately suspend and support the roof portion including the truss beam from the outer peripheral column, instead of installing a support work on a large scale and constructing a roof frame on the support work.
Moreover, in this invention, after joining an outer periphery pillar, an outer periphery beam, and a truss beam, a suspended roof frame is assembled with high precision by constructing a small beam between truss beams and between a truss beam and an outer periphery beam. be able to.

  In the construction method of the suspended roof frame according to the second aspect of the invention, at least two of the outer peripheral pillars are oblique pillars, and in the step of installing the oblique pillars, on the floor surface (for example, floor surface 2 described later). A hinge member (for example, a hinge member 51 described later) installed rotatably, a jack (for example, a jack 52 described later) provided on the hinge member and extendable, and a jack provided on the jack. A support member (for example, a support member 53 described later), and a lower member of the oblique column attached to the floor surface, and the diagonal column The diagonal column is built in a predetermined position by supporting the intermediate portion of the bracket with the cane member.

  According to the present invention, the oblique column is supported using the cane member having the hinge member having the rotating function and the jack having the extending function. Therefore, it is possible to easily adjust the construction position of the oblique column in the three-dimensional space by the hinge member and the jack of the cane member, and to prevent the oblique column from falling, and to fix the oblique column to the predetermined position. It can be built in an inclined state.

  According to a third aspect of the present invention, there is provided a method for constructing a suspended roof frame in which a pin insertion hole (in each of the connecting portion between the truss beam joint and the connecting member and the connecting portion between the outer peripheral column and the connecting member is provided. For example, pin insertion holes 342 and 343) to be described later are formed, and in the step of laying the connecting member between the oblique column and the truss beam joint portion, at the tip of the pin (for example, pin 341 to be described later) A pin guide plate (for example, a pin guide plate 344 described later) having a diameter that decreases toward the tip is attached, and the tip of the pin guide plate is inserted into the two pin insertion holes, whereby the pin 2 It is characterized by being guided through two pin insertion holes.

  According to this invention, the pin guide plate is attached to the tip of the pin, and the pin guide plate is used to guide the insertion of the pin into the pin insertion hole. Even when the insertion holes are slightly misaligned, the pin can be smoothly and reliably inserted into the pin insertion hole.

  According to the construction method of the suspended roof frame of the present invention, the suspended roof frame can be assembled with high accuracy.

It is a top view of the suspended roof frame which concerns on one Embodiment of this invention. It is AA longitudinal cross-sectional view of FIG. It is a perspective view of a suspended roof frame. It is a typical perspective view which shows the main frames of a suspended roof frame. It is explanatory drawing (the 1) which shows the force which acts on a suspended roof frame. It is explanatory drawing (the 2) which shows the force which acts on a suspended roof frame. It is a flowchart of the construction procedure of a suspended roof frame. It is explanatory drawing (the 1) which shows the construction procedure of a suspended roof frame. It is explanatory drawing (the 2) which shows the construction procedure of a suspended roof frame. It is explanatory drawing (the 3) which shows the construction procedure of a suspended roof frame. It is explanatory drawing (the 4) which shows the construction procedure of a suspended roof frame. It is a flowchart of the procedure which builds the outer periphery pillar of a suspended roof frame. It is explanatory drawing (the 1) which shows the procedure which builds the outer periphery pillar of a suspended roof frame. It is explanatory drawing (the 2) which shows the procedure which builds the outer periphery pillar of a suspended roof frame. It is a flowchart of the attachment procedure of the connection member of a suspended roof frame. It is explanatory drawing (the 1) which shows the attachment procedure of the connection member of a suspended roof frame. It is explanatory drawing (the 2) which shows the attachment procedure of the connection member of a suspended roof frame. It is explanatory drawing (the 3) which shows the attachment procedure of the connection member of a suspended roof frame. It is a flowchart of the construction procedure of the truss beam of a suspended roof frame. It is explanatory drawing which shows the construction procedure of the truss beam of a suspended roof frame.

  As a method of joining a plurality of suspension members (connecting members, truss beams) to a vertical member (peripheral column) and a horizontal member (peripheral beam) at a high position, the present inventors A vertical member extending in a direction is supported by a cane member including a hinge member having a stretching function, and a plurality of lifting machines are used to make a vertical member, a horizontal member, and a suspension member (connection member, truss beam) Focusing on the fact that high construction accuracy can be secured by joining in the air while measuring the three-dimensional position coordinates, the invention of the construction method of a suspended roof frame has been reached.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a plan view of a suspended roof frame 1 according to an embodiment of the present invention, and FIG. 2 is a longitudinal sectional view taken along line AA in FIG. FIG. 3 is a perspective view of the suspended roof frame 1.
The suspended roof frame 1 includes a foundation 10 constructed in the ground, a plurality of steel-framed outer peripheral columns 20 provided along the foundation 10, and a steel-framed roof frame supported by the outer columns 20. 30.

  As shown by a broken line in FIG. 1, the base portion 10 is constructed in a substantially square frame shape in plan view. Of the four corners of the base 10, the lower left side in FIG. 1 is the corner 10A, the corner adjacent to the corner 10A is the corner 10B, and the corner located on the diagonal of the corner 10A is the corner. 10C.

  Further, the roof frame 30 has a rhombus shape in plan view. Of the four corners of the roof frame 30, the corner on the lower left side in FIG. 1 is the corner 30A, and the corner adjacent to the corner 30A is the corner. A corner located on a diagonal line between the corner 30B and the corner 30A is defined as a corner 30C.

The corner 30 </ b> A of the roof frame 30 is located immediately above the corner 10 </ b> A of the foundation 10. When the outer peripheral column that supports the corner portion 30A of the roof frame 30 is the outer peripheral column 20A, the outer peripheral column 20A extends substantially vertically from the corner portion 10A of the base portion 10.
In addition, a pair of outer peripheral brace members 21A extending along the outer peripheral column 20 is disposed on both sides of the corner portion 30A, that is, the outer peripheral column 20A.

The corner portion 30 </ b> B of the roof frame 30 is located inside the base portion 10. Assuming that the three outer peripheral columns supporting the corner portion 30B of the roof frame 30 are the outer peripheral columns 20B, the outer peripheral columns 20B are inclined and extended inward from the vicinity of the corner portion 10B of the base portion 10.
Moreover, about the outer periphery pillar 20 located in a line from the corner | angular part 10A of the base part 10 to the corner | angular part 10B, as it goes to the corner | angular part 10B from the corner | angular part 10A, the inward fall (inclination angle with respect to a horizontal surface) becomes large.
In addition, a pair of outer peripheral brace members 21B extending along the outer peripheral columns 20 and 20B are disposed on both side surfaces of the corner portion 30B, that is, the outer peripheral column 20B.

The corner 30 </ b> C of the roof frame 30 is located on the inner side of the foundation 10. Assuming that the three outer peripheral columns supporting the corner portions 30C of the roof frame 30 are the outer peripheral columns 20C, the outer peripheral columns 20C are inclined and extended inward from the vicinity of the corner portions 10C of the base portion 10.
Moreover, the part from the corner | angular part 30B of the roof frame 30 to the corner | angular part 30C is substantially parallel to the part from the corner | angular part 10B of the base part 10 to the corner | angular part 10C, and from the corner | angular part 10B of the base part 10 to the corner | angular part 10C. About the outer periphery pillar 20 located in a line, the inward fall is constant.

In addition, a pair of outer peripheral brace members 21C extending along the outer peripheral columns 20 and 20C are disposed on both side surfaces of the corner portion 30C, that is, the outer peripheral column 20C.
As shown in FIGS. 1 to 3, the outer peripheral columns 20 </ b> B and 20 </ b> C are oblique columns that are longer than the outer peripheral column 20 </ b> A in the material axis direction and are inclined with respect to the horizontal plane. These outer peripheral columns 20 </ b> B and 20 </ b> C, which are diagonal columns, are connected by an outer peripheral beam 33.

FIG. 4 is a schematic perspective view showing the main framework of the suspended roof frame 1. In FIG. 4, the display of the outer peripheral columns 20 other than the outer peripheral columns 20 </ b> A, 20 </ b> B, 20 </ b> C, the inner small beam 32 and the outer small beam 35 described later is omitted.
The roof frame 30 is provided adjacent to the frame-shaped truss beam 31 in a plan view, the inner small beam 32 laid in a lattice shape between the upper ends of the truss beam 31, and surrounding the truss beam 31. A frame-shaped outer peripheral beam 33 that connects the outer peripheral columns 20, four connecting members 34 that connect the lower end of the truss beam 31 and the outer peripheral column 20, and an upper end of the corner of the truss beam 31 and the outer peripheral column 20. And an outer small beam 35 laid in a lattice shape between them.
Here, the truss beam 31 and the inner small beam 32 that is a structure surrounded by the truss beam 31 are referred to as a central roof frame 37.

The truss beam 31 has a truss shape in a side view and a rhombus frame shape in a plan view. That is, the truss beam 31 is configured by joining four truss members 36 extending linearly. The four corner portions of the truss beam 31, that is, the joint portions between the four truss members 36 are referred to as corner portions 31A, 31B, and 31C.
As shown in FIG. 2, each truss beam 31 includes a lower chord material 311 that extends substantially horizontally and linearly, an upper chord material 312 that is disposed above the lower chord material 311 and extends linearly substantially parallel to the lower chord material 311, And an oblique member 313 that connects the lower chord member 311 and the upper chord member 312.

  The outer circumferential beam 33 has a rhombus frame shape in plan view. The outer peripheral beam 33 is supported by the outer peripheral column 20 at predetermined intervals. The four corners of the outer circumferential beam 33 are corners 30A, 30B, and 30C of the roof frame.

The connecting member 34 connects the lower chord members 311 of the four corners 31A, 31B, and 31C of the rhombus-shaped truss beam 31 and the outer peripheral columns 20A, 20B, and 20C. Accordingly, the outer peripheral columns 20A, 20B, and 20C support the truss beam 31 in a suspended manner via the connecting member 34.
These connecting members 34 are hinge-joined to the lower chord material 311 and the outer circumferential beam 33 of the truss beam 31 by a hinge joint portion 38. The hinge joint portion 38 is configured to include a pin 341 that is substantially horizontal and extends in a direction orthogonal to the length direction of the connecting member 34, and the connecting member 34 has a lower chord member of the truss beam 31 with the pin 341 as a rotation axis. 311 and the outer peripheral beam 33 can be rotated.

Returning to FIG. 1, the inner beam 32 includes a primary beam 321 that connects the upper ends of the truss beams 31 and extends substantially parallel to each other, and a secondary beam 322 that connects the primary beams 321. .
The outer small beam 35 connects the upper end portion of the outer circumferential beam 33 and the upper end portion of the truss beam 31 and extends substantially parallel to each other, and the secondary small beam 352 that connects the primary small beams 351 to each other. And comprising.

  In the roof frame 30 described above, as shown in FIGS. 5 and 6, when the roof weight P is applied, a compressive force is generated in the upper chord member 312 of the truss beam 31 and a tensile force is generated in the lower chord member 311. Further, a tensile force Q is generated in the connecting member 34, and a compressive force R is generated in the outer peripheral large beam.

Next, the construction method of the above suspended roof frame 1 is demonstrated, referring the flowchart of FIG.
The suspended roof frame 1 is constructed from the corner 30C of the roof frame 30 toward the corner 30A (see FIG. 1).
First, in step S1, as shown in FIG. 8, the part from the corner | angular part 30C of the roof frame 30 to the corner | angular part 31C of the truss beam 31 is constructed | assembled. At this time, the built-in outer peripheral column 20 </ b> C is supported by the column receiving vent 40, and the built-in outer peripheral column 20 is supported by the column receiving column 41. Further, the truss beam joint 314 constituting the corner portion 31 </ b> C of the truss beam 31 is supported by the truss beam receiving vent 42.

Specifically, first, as shown in FIG. 9A, the column receiving vent 40 and the column receiving column 41 are installed. Next, the outer peripheral column 20 </ b> C is built, and the built outer peripheral column 20 </ b> C is supported by the column receiving vent 40.
Next, as shown in FIG. 9B, the outer peripheral column 20 adjacent to the outer peripheral column 20 </ b> C is built, and the built outer peripheral column 20 is supported by the column receiving column 41. Moreover, the structural stability of the constructed frame is ensured by installing the outer circumferential beam 33 and the outer small beam 35 between the built-in outer circumferential columns 20 and 20C.

Next, as shown in FIG. 9C, the outer peripheral column 20 adjacent to the already built outer peripheral column 20 is built, and the built outer peripheral column 20 is supported by the column receiving column 41. Moreover, the structural stability of the constructed frame body is ensured by installing the outer peripheral braces 21C, the outer peripheral beams 33, and the outer small beams 35 between the built-in outer peripheral columns 20.
In this way, the outer peripheral pillars 20 are sequentially built from the corner 30C of the roof frame 30 toward the corner 30B while securing the structural stability of the frame.

In step S2, as shown in FIG. 10, the part to the corner | angular part 31B of the truss beam 31 is constructed | assembled. At this time, the outer peripheral column 20B is supported by the column receiving vent 40, and the outer peripheral column 20 is supported by the column receiving column 41. Further, the corner portion 31 </ b> B of the truss beam 31 is supported by the truss beam receiving vent 42.
In this step S2, the column support column 41 is replaced, and then the outer peripheral columns 20 are sequentially arranged in the same manner as in step S1 while ensuring the structural stability of the frame toward the corner 30B of the roof frame 30. Build it in.
Here, a hydraulic jack (not shown) is provided at the upper ends of the column receiving vent 40 and the truss beam receiving vent 42, and the top of the outer peripheral column 20B and the truss beam 31 are placed on the hydraulic jack.

In step S3, as shown in FIG. 11, the truss beam 31 is completed. At this time, the built-in outer peripheral column 20 is supported by the column receiving column 41. Further, the corner portion 31 </ b> A of the truss beam 31 is supported by the truss beam receiving vent 42.
Specifically, in this step S3, the column support column 41 is replaced, and then, while securing the structural stability of the frame from the corner 30B of the roof frame 30 toward the corner 30A, step S1 is performed. In the same manner as above, the outer peripheral pillars 20 are built in order.

  In step S4, the remaining outer peripheral pillars 20 and 20A are built, and the suspended roof frame 1 is completed. Specifically, in this step S4, the outer peripheral columns 20 and 20A are sequentially built in the same manner as in step S1 while securing the structural stability of the frame toward the corner 30A of the roof frame 30. .

  In step S5, the column support column 41 is removed, and then the hydraulic jacks of the column support vent 40 and the truss beam receiving vent 42 are driven to jack down the roof frame 30. At this time, the jackdown operation is performed so that the downward displacement amount of the steel frame member constituting the roof frame 30 is equal to or less than a predetermined allowable displacement amount. As for the allowable displacement amount of the roof frame 30, the basic management value is 1/500 of the minimum span length, and the limit management value is 1/300 of the minimum span length.

Next, a procedure for installing the outer peripheral column 20 that is an oblique column in the above-described steps S1 to S4 will be described with reference to the flowchart of FIG.
The outer peripheral column 20 is divided into three parts, and is provided on a column base portion 22 that extends linearly, a column intermediate portion 23 that extends linearly from above the column base portion 22, and the column intermediate portion 23. And a column head 24 to be a part of the outer circumferential beam 33 (see FIG. 14).

First, in step S11, as shown in FIG. 13, a cane member 50 for temporarily supporting the column base portion 22 of the outer peripheral column 20 is installed on the floor surface 2 and the column head 24 of the outer peripheral column 20 is mounted. A column receiving vent 40 or a column receiving column 41 for temporary support is installed.
The cane member 50 includes a hinge member 51 that is rotatably installed on the floor surface 2, a jack 52 that is provided on the hinge member 51 and can be extended, and a linear member provided on the jack 52. And a support member 53 extending in the direction.
Since this cane member 50 supports the column base 21 at a predetermined position, the hinge member 51 and the jack 52 are appropriately adjusted to set the position of the tip of the cane member 50 to a predetermined position. .

In step S12, as shown in FIG. 13, the column base 22 is lifted by the lifting machine 60 and built in a predetermined position. At this time, the lower end portion of the column base portion 22 is attached to the floor surface 2, and the upper end portion of the column base portion 22 is temporarily supported by the cane member 50. Thereby, the cane member 50 supports the intermediate position of the outer peripheral column 20.
Further, as shown in FIG. 14, the column head 24 is lifted by a lifting machine 60 and placed on the column receiving vent 40 or the column receiving column 41.

  In step S <b> 13, as shown in FIG. 14, the column intermediate part 23 is lifted and built by the lifting machine 60. Thus, the outer peripheral column 20 is built in a predetermined position, and the outer peripheral column 20 and the outer peripheral beam 33 are connected in the air.

Next, in steps S1 to S4 described above, the procedure for attaching the connecting member 34 will be described with reference to the flowchart of FIG.
As an initial state, as shown in FIG. 16, the column head 24 of the outer peripheral column 20 is temporarily supported by the column receiving vent 40.
In step S <b> 21, the truss beam receiving vent 42 is installed, and the truss beam joint 314 constituting the corner portion 31 </ b> C of the truss beam 31 is disposed on the truss beam receiving vent 42.

  In step S22, as shown in FIG. 16, the connecting member 34 and the truss beam joint 314 are lifted by the lifting machine 60, and the positions and postures of the connecting member 34 and the truss beam joint 314 in the three-dimensional space are determined. While measuring and controlling the light wave, one end of the connecting member 34 is inserted into the column head 24 of the outer peripheral column 20 and one end of the connecting member 34 is inserted into the truss beam joint 314.

  In step S23, the pin 341 is attached to connect the connecting member 34 and the column head portion 24 of the outer peripheral column 20 to each other so as to be rotatable, and to connect the connecting member 34 and the truss beam joint portion 314 to each other.

That is, as shown in FIG. 17, a pin insertion hole 342 is formed in the truss beam joint 314 and the column head 24 of the outer peripheral column 20, and a pin insertion hole 343 is formed in the connecting member 34. The pin 341 is inserted through the pin insertion hole 342 and the pin insertion hole 343.
At this time, as shown in FIG. 18, a pin guide plate 344 having a diameter decreasing toward the tip is attached to the tip of the pin 341, and the two pin insertion holes 342 and 343 are inserted from the tip of the pin guide plate 344. As a result, the pin 341 is guided and inserted into the pin insertion holes 342 and 343.

Next, the procedure for constructing the truss beam 31 in steps S1 to S3 described above will be described with reference to the flowchart of FIG.
As mentioned above. The rhombus-shaped truss beam 31 includes four linear truss members 36.
In step S31, the truss member 36 is assembled on the ground.
In step S32, as shown in FIG. 20, the ground truss member 36 is lifted by the lifting machine 60, is laid between the truss beam receiving vents 42, and is joined to the truss beam joint 314. In this way, the truss beam 31 is assembled in the air.

According to this embodiment, there are the following effects.
(1) A central roof frame 37 is provided at the center of the roof frame 30, and the central roof frame 37 is supported by being suspended from the outer circumferential beam 33 via a connecting member 34 to form a suspended roof structure. Therefore, since the bending moment generated in the truss beam 31 of the central roof frame 37 is converted to the tensile force Q of the connecting member 34 and transmitted to the outer circumferential beam 33, the bending moment acting on the constituent members of the roof frame 30 can be reduced. The diameter of the member can be reduced.
Further, since the large roof is constructed by providing the central roof frame 37 including the frame-shaped truss beams 31 only at the center of the roof frame 30, a large space can be realized with a small number of members.
In addition, since the truss beam 31 is installed only in the central portion of the roof frame 30, the truss beam 31 can be easily installed, so the construction period can be shortened. Moreover, since the truss beam 31 is provided only in a part of the roof frame 30, the ceiling height in the room of the roof structure 1 can be increased even around the edge of the roof.

(2) The outer peripheral column 20, that is, the column head 24 of the outer peripheral column 20 is arranged on the column receiving vent 40 or the column receiving column 41 while supporting the outer peripheral column 20 that is an oblique column with the cane member 50. 20 and the outer peripheral beam 33 are joined in their original positions.
Further, the truss beam joint 314 is disposed on the truss beam receiving vent 42 so that the truss beam joint 314 is disposed at an original position, and the connecting member 34 is installed between the outer peripheral column 20 and the truss beam joint 314. Thus, the suspended roof frame 1 can be assembled with high accuracy by connecting the outer peripheral column 20, the truss beam 31, and the connecting member 34 in the air at the original position.

  Further, when a support work is provided over the entire surface directly under the roof frame 30, it is necessary to provide a large-scale support work, and there is a problem that the work period is prolonged. However, according to the present invention, since only a part of the roof frame 30 is supported by the column receiving vent 40, the column receiving column 41, and the truss beam receiving vent 42, the suspended roof frame 1 can be constructed in a short construction period.

  (3) The outer peripheral column 20 was supported using the cane member 50 provided with the hinge member 51 having a rotating function and the jack 52 having a extending function. Therefore, it is possible to adjust the erected position of the outer peripheral column 20 in the three-dimensional space with one wand member 50. Moreover, it can be built in the state which inclined the outer peripheral pillar 20 to the predetermined position, preventing the outer peripheral pillar 20 from falling.

  (4) Since the pin guide plate 344 is attached to the tip of the pin 341 and the insertion of the pin 341 into the pin insertion holes 342 and 343 is guided by the pin guide plate 344, the pin 341 and the pin insertion holes 342 and 343 Even when the gap is small or the relative positions of the pin insertion holes 342 and 343 are slightly shifted, the pin 341 can be smoothly and reliably inserted into the pin insertion holes 342 and 343.

It should be noted that the present invention is not limited to the above-described embodiment, and modifications, improvements, etc. within a scope that can achieve the object of the present invention are included in the present invention.
In the above embodiment, the outer peripheral column 20 is divided into three parts, and the divided components are assembled in the air. However, the present invention is not limited to this, and the outer peripheral column may be divided into two parts and assembled in the air. After the outer peripheral pillars are grounded on the ground, they may be erected.

DESCRIPTION OF SYMBOLS 1 ... Suspended roof frame 2 ... Floor surface 10 ... Base part 10A, 10B, 10C ... Corner | angular part 20, 20A, 20B, 20C ... Peripheral column (diagonal column)
21A, 21B, 21C ... outer peripheral brace material 22 ... column base 23 ... column intermediate part 24 ... column head 30 ... roof frame 30A, 30B, 30C ... corner of roof frame 31 ... truss beam 31A, 31B, 31C ... truss beam Corner portion 32 ... inner beam 33 ... outer beam 34 ... connecting member 35 ... outer beam 36 ... truss member 37 ... central roof frame 38 ... hinge joint 40 ... column support vent 41 ... column support column 42 ... truss beam support Vent 50 ... Cane member 51 ... Hinge member 52 ... Jack 53 ... Support member 60 ... Weighting machine 311 ... Lower chord material 312 ... Upper chord material 313 ... Diagonal material 314 ... Truss beam joint 321 ... Primary beam 322 ... Secondary Small beam 341 ... Pin 342, 343 ... Pin insertion hole
344 ... Pin guide plate 351 ... Primary beam 352 ... Secondary beam

Claims (3)

A method for constructing a suspended roof frame,
The suspended roof frame includes a plurality of outer peripheral columns, an outer peripheral beam connecting the outer peripheral columns, a truss beam arranged in a rectangular frame shape in plan view, and a connection connecting the outer peripheral column and the truss beam. A member, and
Building the outer peripheral column, and then joining the outer peripheral column and the outer peripheral beam in the air;
Installing a support work and placing a truss beam joint that is a part of the truss beam on the support work; and
Laying the connecting member between the outer peripheral column and the truss beam joint;
And a step of assembling the truss beam in the air. At least two of the outer peripheral columns are diagonal columns,
In the step of building the diagonal pillar, a hinge member rotatably installed on the floor, a jack provided on the hinge member and extendable, a support member provided on the jack, Prepare a staff member with
2. The diagonal column is built in a predetermined position by attaching a lower end portion of the diagonal column on the floor and supporting an intermediate portion of the diagonal column with the staff member. The construction method of the suspended roof frame of description. A pin insertion hole is formed in each of the connecting portion between the truss beam joint and the connecting member, and the connecting portion between the outer peripheral column and the connecting member,
In the step of laying the connecting member between the oblique column and the truss beam joint part, a pin guide plate having a diameter decreasing toward the tip is attached to the tip of the pin,
The construction of a suspended roof frame according to claim 1, wherein the pin is guided and inserted into the two pin insertion holes by inserting the tip of the pin guide plate into the two pin insertion holes. Method.

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