Method of constructing column-beam frame

Abstract

To provide a construction method of a column-beam frame capable of reducing work at a high place.SOLUTION: A method for constructing a column-beam frame including reinforced concrete columns and steel beams in each of a plurality of work sections by a column runout method includes a ground assembling step of ground assembling a planar unit 500 including a joint member 300, a pair of mutually orthogonal beams 200X and 200Y connected to the joint member 300, and a beam 210 connected to a girder 200Y, and a building step of building a planar reference unit 500.SELECTED DRAWING: Figure 11

Description

[Technical Field]

[0001] The present invention relates to a method for constructing a beam-column structure. [Background technology]

[0002] A known method for constructing a column-beam frame in which the columns are made of reinforced concrete and the beams are made of steel is to use a crane to lift precast concrete columns and steel beams. Furthermore, for efficient construction, Patent Document 1, for example, discloses a method in which columns and joints are assembled on the ground and then erected. Patent Document 2, for example, discloses a method in which cross beams and joints are assembled on the ground and then erected. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 4996370 [Patent Document 2] Special Publication No. 7-88686 Summary of the Invention [Problem to be solved by the invention]

[0004] According to the methods described in Patent Documents 1 and 2, the pillars and joints, and the cross beams and joints are erected as a single unit, which improves the efficiency of construction. However, even with the method described in Patent Document 1, the erection of the sub-beams and second beams must be carried out at high altitudes, which creates the risk of working at high altitudes and the hassle of constructing temporary facilities.

[0005] The present invention has been made in consideration of the above problems, and aims to provide a method for constructing a column-beam frame that can reduce work at high altitudes. [Means for solving the problem]

[0006] According to one aspect of the present invention, there is provided a method for constructing a column-beam frame having reinforced concrete columns and steel beams using a build-and-run method in which a column-beam frame is constructed in multiple construction sections, the method including a base assembly step of assembling units including joint members, multiple main girders including a pair of beams perpendicular to each other and connected to the joint members, and a minor beam connected to one of the pair of beams, and an erection step of erecting the units. According to the above-mentioned aspect, the structure is erected as a planar unit including a main beam and a secondary beam, which reduces the need for connecting secondary beams and other components after erection, as well as work at height, thereby improving workability and safety and reducing costs.

[0007] According to one aspect of the present invention, a unit includes one joint member, a pair of main beams extending in perpendicular directions and connected to the joint member, and a secondary beam located within a plane defined by the pair of main beams, and in the installation step, a portion of a column-beam structure is constructed by connecting multiple units. According to the above aspect, a part of a lattice-shaped beam-column structure can be constructed by erecting the same unit, which simplifies the work and reduces construction errors.

[0008] According to one aspect of the present invention, the ground assembly step includes an overall ground assembly step in which the main beams, secondary beams, and joint members of at least a portion of the planar sections of the column-beam frame are assembled together, and a division step in which the main beams, secondary beams, and joint members of the assembled planar sections are divided into multiple units. According to the above-mentioned aspect, the entire area of ​​a partial planar section is assembled as a single unit in the overall assembly step, so that the alignment of the beams in the entire area can be confirmed, and distortions can be corrected while checking the manufacturing precision, and efficient alignment can be performed when lifting and erecting the structure.

[0009] According to one aspect of the present invention, the unit further includes a grand beam having one end connected to the other beam of the pair of beams, the grand beam intersecting the minor beam. According to the above aspect, the beam can also be erected integrally, reducing the amount of work required at height.

[0010] According to one aspect of the present invention, in the erection step, the plurality of second beams are lifted with temporary beams attached to the other ends thereof. According to the above aspect, the sub-beam does not become a cantilevered beam when lifted, and the erection can be carried out safely.

[0011] According to one aspect of the present invention, in the erection step, the main beam and the end of the sub-beam opposite to the end connected to the main beam are lifted and lifted. According to the above aspect, the unit can be lifted in a well-balanced manner.

[0012] According to one aspect of the present invention, in the overall assembly step, the main beams, secondary beams, secondary beams and joint members within a unit are connected using permanent bolts, and members of different units are connected using temporary fastening members, and in the division step, the temporary fastening members are removed. According to the above aspect, the connection work using the permanent bolts after erection can be reduced, and the use of temporary fastening members makes it easy to assemble the structure on the ground.

[0013] According to one aspect of the present invention, the base assembly step is performed on a floor slab for which construction has been completed in a construction area other than the construction area to be constructed. According to the above aspect, the ground steps can be easily assembled even on a small site.

[0014] According to one aspect of the present invention, the foundation assembly step is performed by placing at least one joint member on a pillar whose construction has already been completed. According to the above-mentioned aspect, in the case of the base assembly step, the load acts on the ground from the joint member, but by performing this on the pillar, the load can be reliably supported. [Effects of the Invention]

[0015] According to the present invention, a method for constructing a beam-column structure can be provided that can reduce work at high altitudes. [Brief explanation of the drawings]

[0016] [Figure 1]1 is a perspective view showing a column-beam frame constructed by a method for constructing a column-beam frame according to an embodiment of the present invention. [Figure 2] 2 is a plan view showing the configuration of the beams and joint members of the beam-column frame shown in FIG. [Figure 3] FIG. [Figure 4] FIG. [Figure 5] FIG. 1 is a plan view showing the ground upon construction of a foundation structure including a ground slab of a building. [Figure 6A] This is an oblique view to explain the construction method of the column-beam frame of the first construction section. [Figure 6B] This is an oblique view to explain the construction method of the column-beam frame of the first construction section. [Figure 6C] This is an oblique view to explain the construction method of the column-beam frame of the first construction section. [Figure 6D] This is an oblique view to explain the construction method of the column-beam frame of the first construction section. [Figure 6E] This is an oblique view to explain the construction method of the column-beam frame of the first construction section. [Figure 6F] This is an oblique view to explain the construction method of the column-beam frame of the first construction section. [Figure 6G] This is an oblique view to explain the construction method of the column-beam frame of the first construction section. [Figure 6H] This is an oblique view to explain the construction method of the column-beam frame of the first construction section. [Figure 7] FIG. 10 is a schematic plan view showing how beams and joint members are assembled. [Figure 8] FIG. 10 is a perspective view showing the stand without the joint member placed thereon. [Figure 9] FIG. 10 is a perspective view showing the stand on which the joint member is placed. [Figure 10] FIG. 2 is a plan view showing the state in which the device is divided into units. [Figure 11] FIG. 10 is a perspective view showing how the base unit is lifted. DETAILED DESCRIPTION OF THE INVENTION

[0017] Hereinafter, one embodiment of a method for constructing a beam-column frame of the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view showing a column-beam frame constructed by a method for constructing a column-beam frame according to one embodiment of the present invention. FIG. 2 is a plan view showing the configuration of beams and joints of the column-beam frame shown in FIG. 1. As shown in FIGS. 1 and 2, the column-beam frame 1 of this embodiment is a column-beam frame for a three-story building constructed on a foundation skeleton, and is configured by connecting a column 100 and girders 200X and 200Y in a three-dimensional lattice pattern at joints 300 of the column 100. The column-beam frame of this embodiment is a column-beam frame for a three-story building in which the column 100 is made of reinforced concrete and the girders 200X and 200Y are made of steel. Although not shown, a foundation skeleton has already been constructed, and the above-ground portion shown in FIG. 1 is constructed on the foundation skeleton. In this embodiment, a method for constructing a column-beam frame for the first to third floors is described, but the third floor and above and the lower floors may be constructed using ordinary steel frame construction or reinforced concrete construction, and the present invention is included as long as the column-beam frame for at least some of the floors is constructed using the method described below. Also, in this embodiment, a method for constructing a column-beam frame for the first to third floors is described, but naturally the number of floors is not limited, and the shape of the column-beam frame is not limited to this embodiment. Also, although the column-beam frame in this embodiment is entirely lattice-shaped, the present invention can be applied as long as at least a portion is lattice-shaped.

[0018] As shown in Figure 2, the girders 200X, 200Y of each floor are arranged in a grid pattern over five spans in the width direction (X direction) and six spans in the depth direction (Y direction). Six columns are arranged at equal intervals in the width direction (X direction), and seven columns (joints 300) are arranged at equal intervals in the depth direction (Y direction). The columns of each floor extend from the foundation frame to the top floor. In the following explanation, for example, the intersection of X1 street and Y1 street will be denoted as X1Y1, and the span between X1 street and X2 street will be denoted as X1X2.

[0019] The beam-column structure 1 of this embodiment also includes, as beams, main girders 200X, 200Y that are connected at both ends to the column joints 300 and extend in the X and Y directions, a secondary beam 210 that extends in the X direction and is connected between the main girders 200X, 200Y that have both ends extending in the Y direction, and a secondary beam 220 that has one end connected to the main girder 200X extending in the X direction and the other end connected to the secondary beam 210.

[0020] The beam-column frame 1 of this embodiment is constructed by connecting a precast concrete column member 100, a joint member 300, and beams (main girders 200X, 200Y, minor beam 210, and second beam 220).

[0021] Fig. 3 is a cross-sectional view showing a column member. As shown in Fig. 3, the column member 100 has a rectangular parallelepiped column body 110 made of precast concrete, column main reinforcements 120 extending vertically within the column body 110, mechanical joints 130 connected to the lower ends of the column main reinforcements 120, and hoop reinforcements (not shown). In this embodiment, the column main reinforcements 120 are provided at the four corners of the column member 100 in a plan view.

[0022] FIG. 4 is a perspective view of a joint member. As shown in FIG. 4, the joint member 300 includes a surrounding plate 310 that surrounds the joint and a steel beam 320 that intersects within the surrounding plate 310. The steel beam 320 forms the end of the beam in the beam-column frame and is connected to the main girder. The steel beam 320 intersects within the surrounding plate 310. The surrounding plate 310 is a tubular member that is square in plan view, and band plates 330 are attached to the upper and lower edges. In this embodiment, the steel beam and the surrounding plate are integrated to form the joint member 300. The joint member 300 is connected to the column member 100 to form a connection between the column and the main girder 200X, 200Y. Note that the structure of the joint member is not limited to the configuration shown in FIG. 4. For example, a configuration in which the surrounding plate and band plates are not integrated, or a configuration using precast concrete, can also be used. The beams (main beams 200X, 200Y, minor beam 210, and secondary beam 220) are made of H-shaped steel.

[0023] The method for constructing a column and beam frame of this embodiment will be described below. The method for constructing a column and beam frame of this embodiment is a building and run construction method, in which a building (column and beam frame) is constructed by dividing it into multiple construction sections. Specifically, the column and beam frame is constructed first from the ground floor to the top floor in the first construction section, and then the column and beam frame is constructed from the ground floor to the top floor in the second construction section. In this way, after the construction of one construction section is completed, the construction of another construction section is repeated to construct the column and beam frame of the entire building.

[0024] In this embodiment, the column-beam structure 1 is divided into three construction sections in the depth direction (Y direction), and is constructed in the following order: Construction section 1 is the two spans at the back of the depth direction (from Y1 street to Y3 street) as shown in Figure 1; Construction section 2 is the two spans in the center of the depth direction (from Y3 street to Y5 street); and Construction section 3 is the two spans at the front of the depth direction (from Y5 street to Y7 street).

[0025] First, the foundation framework, including the ground slab, is constructed for the first to third sections of the building. This process may be performed by a known method. FIG. 5 is a plan view showing the ground after the foundation framework, including the ground slab, of the building has been constructed. As shown in FIG. 5, after the ground slab is constructed, the upper surfaces of the joints of the columns that make up the foundation framework are exposed on the ground slab, and the column main reinforcement bars 120 protrude from the upper surfaces of the joints 300 of the columns 100. For the sake of explanation, only a portion of the column main reinforcement bars is shown in FIG. 5. Note that the underground structure may not include a foundation framework, but instead a basement floor may be constructed.

[0026] Next, work is carried out to construct the column and beam frame of the first construction section. Figures 6A to 6H are perspective views for explaining the method of constructing the column and beam frame of the first construction section.

[0027] First, as shown in Figure 6A, the column members 100 are erected on the first floor of the first construction section (column member erection step). The column members 100 are erected on the joints of the columns 100 exposed to the ground slab in the first construction section, the column main reinforcements 120 of the erected column members 100 are connected to the column main reinforcements 120 of the lower floor with mechanical joints 130, and grout is injected between the joints of the lower floor and the column members 100. In this way, all of the column members 100 on the first floor of the first construction section are erected.

[0028] Next, the beams 200X, 200Y, 210, 220 and joint members 300 on the first floor of the first construction section (X1-X6, Y1-Y3) are assembled into units 500, 510 (ground assembly step). This ground assembly step may be performed in parallel with the erection of the column members. Figure 7 is a schematic plan view showing the ground assembly of the beams and joint members. As shown in Figure 7, the ground assembly of the beams 200 and joint members 300 is performed on the ground slab of the third construction section, which has already been constructed. In this embodiment, the ground assembly of all the joint members 300, main girders 200X, 200Y, secondary girders 210, and secondary beams 220 of the first construction section is performed (overall ground assembly step). In this case, the joint members 300 are assembled by placing a platform 400 on the joints 300 of the pillars 100 in the third construction section, which has already been constructed, and then placing the joint members 300 on the platform 400. Note that in this embodiment, the entire first construction section is treated as a planar section, and all of the joint members, main girders, secondary girders, and secondary beams in this planar section are assembled on the spot, but the first construction section may be divided into multiple planar sections, and the joint members 300 may be assembled on the spot for each planar section.

[0029] 8 and 9 show a mounting base, with Fig. 8 being a perspective view showing the base without a joint member placed on it, and Fig. 9 being a perspective view showing the base with a joint member placed on it. As shown in Fig. 8, mounting base 400 is a base formed by connecting H-shaped steel beams in a cross shape in a plan view, and has a front extension portion 410 extending forward from the center, a rear extension portion 420 extending rearward from the center, a left extension portion 430 extending leftward from the center, and a right extension portion 440 extending rightward from the center. Reinforcement plates are attached between the flanges of the H-shaped steel beams that make up front extension portion 410, rear extension portion 420, left extension portion 430, and right extension portion 440, as appropriate.

[0030] A protrusion 460 protruding from the top surface is formed at the tip of each of the front extension 410, rear extension 420, left extension 430, and right extension 440. The protrusion 460 is configured by attaching a plate material to the tip surface of each extension 410, 420, 430, and 440. In this embodiment, the protrusions 460 of the front extension 410, rear extension 420, left extension 430, and right extension 440 have the same height. However, for example, the protrusion height of the protrusions 460 of the right extension 440 and rear extension 420 may be lower than the height of the front extension 410 and left extension 430. This allows the joint member 300 to be easily removed from the platform 400 when lifting the joint member 300 after base assembly. Furthermore, the protrusion height of only one or all of the protrusions may be lowered. The spacing between the protrusions 460 of the front extension portion 410 and the rear extension portion 420, and the spacing between the protrusions 460 of the left extension portion 430 and the right extension portion 440, should preferably be adjusted to match the width of the surrounding panel 310 of the joint member 300 of the first floor ceiling portion.

[0031] The platform 400 also has alignment members 470 placed on the upper surfaces of the front extension 410, rear extension 420, left extension 430, and right extension 440, and attached to the center of the protrusion 460. The alignment members 470 are attached to the protrusion 460 with bolts and nuts, for example, and are detachable. The height of the alignment members 470 is preferably the same as the height of the protrusion 460. The width of the alignment members 470 should be formed to match the difference between the width of the surrounding plate 310 of the joint member 300 on the upper floor and the width of the surrounding plate 310 of the joint member 300 on the lower floor. If there are multiple widths of the surrounding plate 310 of the joint, it is recommended to prepare multiple different alignment members 470.

[0032] The height of the frame 400 (the height from the bottom to the top of the front extension 410, rear extension 420, left extension 430, and right extension 440) is preferably 350 mm to 1000 mm. If the height of the frame 400 is less than 350 mm, it will be difficult to connect the undersides of the H-shaped steel when connecting the joint member 300 to the girders 200X, 200Y. If the height of the frame 400 is greater than 1000 mm, the work of connecting the tops of the H-shaped steel will be done at a height, requiring new temporary facilities.

[0033] The platform 400 is placed on the column 100 in the slab in the third construction section, which has already been constructed. The platform 400 is placed so that its center coincides with the center of the column 100. At this time, the platform 400 may be fixed to the top surface of the column with temporary anchors. Because the platform 400 is shaped like a cross, the column main reinforcement bars 120 protruding upward from the completed column do not interfere with the platform 400, and the platform 400 can be installed on the column. In this embodiment, the arrangement (horizontal spacing) of the columns in the first construction section is the same as that of the columns in the second construction section. Therefore, by installing the platform 400 on the column in the second construction section, the columns in the first construction section can be installed on the platform 400 even if they are positioned in their designated positions during ground assembly. The platform 400 may also be placed on the girders 200X and 200Y in the slab in the third construction section, which has already been constructed.

[0034] The joint member 300 is placed on the stand 400 so that each side of the surrounding plate 310 is in contact with the inner surface of the protrusion 460. This positions the joint member 300 so that the center of the joint member 300 coincides with the center of the pillar 100, the extension direction of the front extension portion 410 and the rear extension portion 420 is the X direction, and the extension direction of the left extension portion 430 and the right extension portion 440 is the Y direction.

[0035] It should be noted that the joint members 300 that make up the columns of a lower floor, for example the first floor, may have larger dimensions (width and depth) than the columns of an upper floor. In such a case, when installing the joint members 300 of the first floor on the mounting base 400, the alignment members 470 are removed, and when installing the joint members 300 of an upper floor on the mounting base 400, alignment members 470 that match the dimensions of the joint members 300 are attached. This allows the joint members 300 of each floor to be reliably placed in their predetermined positions.

[0036] When assembling the joint members 300, girders 200X and 200Y, sub-joists 210, and second-beam 220, the sections connecting the components of the units 500 and 510 (described below) are fastened with permanent bolts, while the sections connecting the components of different units 500 and 510 are fastened with temporary fastening members. Fastening with permanent bolts refers to the use of high-strength bolts for permanent fastening while controlling torque; once tightened, the bolts are not loosened. Furthermore, medium-sized bolts and other temporary fastening members can be used as temporary fastening members. The temporary fastening members are not limited to bolts and can be any fasteners intended for removal. In this way, the joints, girders, sub-joists, and second-beams are assembled using permanent bolts and temporary fastening members, and the alignment of the beams and manufacturing precision are checked while any distortion is corrected.

[0037] After all of the joint members 300, girders 200X, 200Y, sub-girders 210, and second beams 220 in the first construction section have been assembled in this manner, the temporary fastening members are removed and the unit is divided into units 500 and 510 (division step), as shown in FIG. 10. FIG. 10 is a plan view showing the divided units. As shown in FIG. 10, each unit includes a base unit 500 and an exterior wall unit 510. The exterior wall unit 510 is composed of girders 200X, 200Y and joint members 300 located on X1 and Y1 directions. The exterior wall units 510 at the corners are composed of girders 200X, 200Y and joint members 300 connected to both ends of the girders 200X, 200Y, and the other parts are composed of girders 200X, 200Y and joint members 300 connected to one end of the girders 200X, 200Y. In the drawing, X1 to X6 and Y1 to Y3 indicate the positions where joint members and the like are installed, and the work of dividing the structure into units is carried out in the third construction section (X1 to X6, Y5 to Y7).

[0038] For n=1 to 5 and m=1 to 2, the reference unit 500 includes a joint member 300 at X(n+1)Y(m+1), a main girder 200X between XnX(n+1) on the Y(m+1) street, and a sub-beam 210 and a second beam 220 located in a plane defined by the main girder 200X between YmY(m+1) on the X(n+1) street. For example, when n=1 and m=1, the reference unit 500 includes a joint member 300 at X2Y2, a main girder 200X between Y1Y2 on the X2 street, a main girder 200Y between X1X2 on the Y2 street, and a sub-beam 210 and a second beam 220 located in a plane defined by the main girder 200X between Y1Y2 and the main girder 200Y between X1X2.

[0039] In the base unit 500, one main girder 200X extending in the X direction and one main girder 200Y extending in the Y direction are connected to the joint member 300. Each of the main girder 200X, 200Y is connected to a bracket of the joint member 300 using a splice plate. The secondary beam 210 is connected to approximately the center of the main girder 200Y extending in the Y direction and extends in the X direction.

[0040] The reference unit 500 also includes two sets of grandchild beams 220. The grandchild beams 220 extend in the Y direction at approximately equal intervals in the X direction. One end of the grandchild beams 220 of one set is connected to a main beam 200X extending in the X direction, and the other end is connected to a secondary beam 210. One end of the grandchild beams 220 of the other set is connected to the secondary beam 210.

[0041] As described above, in this embodiment, a plane is defined in the base unit 500 by a pair of orthogonal girders 200X, 200Y connected to the joint member 300. The base unit 500 includes the joint member 300, the girders 200X, 200Y, and the sub-girder 210 and the second girder 220 located within this plane. In this embodiment, the beams (sub-girder 210, second girder 220) included within the plane defined by the pair of girders 200X, 200Y are erected as a single unit.

[0042] As shown in FIG. 10, the configuration of the ground floor of the first construction section is constant regardless of the span, and therefore each reference unit 500 has the same configuration.

[0043] Furthermore, even if it is necessary to assemble the joint members 300 and the column members 100 in the ground assembly step, it is advisable to do so on a floor slab that has already been constructed.

[0044] Next, the base unit 500 and the exterior wall units 510 are erected (erecting step). First, as shown in FIG. 6B, the exterior wall units 510 on the first floor are erected in order. The order in which the exterior wall units 510 are erected may be, for example, by erecting the exterior wall units 510 of Y1 type from X1Y1 to X1Y3, and then erecting the exterior wall units 510 of X1 type from X1Y1 to X1Y7. In this way, in this embodiment, the ceiling beams on the first floor can be constructed by erecting base units 500 of similar configuration. Then, the girders 200X and 200Y of the newly erected exterior wall units 510 are sequentially connected to the joint members 300 of the exterior wall units 510 that have already been erected using this bolt.

[0045] Next, the base unit 500 for the first floor is erected. FIG. 11 is a perspective view showing how the base unit is lifted. As shown in FIG. 11, a temporary beam 600 is attached to the end of the base beam 220 opposite the sub-beam 210 to prevent the base beam 220 from becoming a cantilever beam during lifting. When lifting, one end of a wire 610 is connected to the main girder 200X extending in the X direction, the main girder 200Y extending in the Y direction, the sub-beam 210, and the temporary beam 600, and the other end of each wire 610 is connected to a lifting member 620. The lifting member 620 is then lifted by a crane. The wire 610 is connected to the end of the sub-beam 210 opposite to the end connected to the main girder 200Y. This allows the base unit 500 to be lifted while maintaining its planar shape without excessive load being applied to the connections between the components of the base unit 500.

[0046] The order in which the base units 500 are erected may be, for example, as shown in Fig. 6C, first erect the Y1Y2 base units 500 from X1 to X6, and then erect the Y2Y3 base units 500 from X1 to X6 as shown in Fig. 6D. After erecting each base unit 500, the temporary beams are removed, and the ends of the main girders 200X, 200Y, sub-beam 210, and second beam 220 are connected to the already erected joint members 300 and main girders 200X, 200Y using bolts.

[0047] After erecting the exterior wall units 510 and base units 500 in this manner, the deck slab is installed. After erecting the exterior wall units 510 and base units 500, the deck slab is first placed on the beams, and reinforcing bars are arranged on the deck slab. Note that the reinforcing bar arrangement work does not necessarily have to be performed immediately after placing the deck slab. Then, concrete is poured inside the surrounding plates 310 of the joint members 300 and on the deck slab. This integrates the first floor columns 100, the first floor ceiling beams 200X, 200Y, 210, 220, and the first floor ceiling (second floor floor slab).

[0048] Next, as shown in FIG. 6E, the column members for the second floor are erected (column member erection step). Specifically, they are erected so that the column main reinforcements 120 of the first floor reach the inside of the mechanical joint 130. At this time, a spacer is installed on the top surface of the column member 100 of the first floor so that a gap is formed between the column member 100 of the first floor and the column member 100 of the second floor. Next, the column main reinforcements 120 of the column member 100 of the second floor are connected to the column main reinforcements 120 of the second floor using the mechanical joint 130. Then, grout material is filled between the column member 100 of the first floor and the column member 100 of the second floor. This completes the erection of the column member 100 of the second floor.

[0049] Next, the beams 200X, 200Y, 210, 220 and the joint members 300 on the second floor of the first construction section are assembled (ground assembly step). The ground assembly of the beams 200X, 200Y, 210, 220 and the joint members 300 on the second floor may be performed in the same manner as the ground assembly on the first floor.

[0050] Next, the temporary fastening members are removed, the structure is divided into a plurality of units 500, 510 (division step), and each of the units 500, 510 is erected as shown in Fig. 6F. The division of the second floor beams 200X, 200Y, 210, 220 and joint members 300 into units 500, 510 and the erection of the units 500, 510 can be carried out in the same manner as the erection of the first floor beams 200X, 200Y, 210, 220 and joint members 300.

[0051] Next, as shown in Fig. 6G, the column members 100 for the third floor are erected (column member erection step). The column members for the third floor may be erected in the same manner as the column members 100 for the first and second floors.

[0052] Next, the beams 200X, 200Y, 210, 220 and the joint members 300 for the third floor of the first construction section are assembled (ground assembly step). The ground assembly of the beams 200X, 200Y, 210, 220 and the joint members 300 for the third floor may be performed in the same manner as the ground assembly for the first floor.

[0053] Next, the temporary fastening members are removed, and the structure is divided into a plurality of units 500, 510 (division step), and each of the units 500, 510 is erected as shown in Fig. 6H. The division of the second floor beams 200X, 200Y, 210, 220 and joint members 300 into units 500, 510 and the erection of the units 500, 510 can be carried out in the same manner as the erection of the first floor beams 200X, 200Y, 210, 220 and joint members 300. Through the above steps, construction of the column and beam frame 1 of the first construction section is completed. Then, the column and beam frames of the second and third construction sections are constructed in the same manner as in the first construction section, thereby completing the construction of the column and beam frames of the first to third construction sections.

[0054] According to this embodiment, the following effects are achieved. The method of this embodiment includes a base-assembly step of assembling a planar unit 500 including a joint member 300, a pair of beams 200X, 200Y that are perpendicular to each other and connected to the joint member 300, and a sub-beam 210 connected to the main beam 200Y, and an installation step of erecting the planar base unit 500. In this way, because the planar base unit 500 including the main beams 200X, 200Y and the sub-beam 210 is erected as a planar base unit 500, the work of connecting the sub-beam 210 and the like after erection is minimized, and work at height can be reduced, improving workability and safety and reducing costs.

[0055] Furthermore, according to this embodiment, the base unit 500 includes one joint member 300, a pair of girders 200X, 200Y that extend in intersecting directions and are connected to the joint member 300, and a minor beam 210 that is located in a plane defined by the pair of girders 200X, 200Y. This makes it possible to construct a lattice-shaped beam-column structure 1 by erecting the same base unit 500, thereby simplifying the work and reducing construction errors.

[0056] Furthermore, according to this embodiment, the base assembly step includes an overall base assembly step in which the girders 200X, 200Y, sub-joists 210, and joints 300 of at least some of the planar sections of the column-beam frame 1 are assembled as a single unit, and a division step in which the girders 200X, 200Y, sub-joists 210, and joints 300 of the assembled planar sections are divided into a plurality of units 500. As a result, because the entire area of ​​some of the planar sections is assembled as a single unit in the overall base assembly step, it is possible to correct distortions while checking the alignment of the beams in the entire area and confirm the manufacturing accuracy, and it is also possible to efficiently align the beams when lifting and erecting them.

[0057] Furthermore, according to this embodiment, the base unit 500 further includes a plurality of second beams 220, one end of which is connected to the main beam 200X, and the second beams 220 intersect with the second beams 210. This allows the second beams 220 to be erected integrally, further reducing the amount of work at height.

[0058] Furthermore, according to this embodiment, in the erection step, the multiple grandchild beams 220 are lifted with the temporary beams 600 attached to the other ends thereof. This prevents the grandchild beams 220 from becoming cantilevered during the lifting, and allows safe erection without putting strain on the connection parts.

[0059] Furthermore, according to this embodiment, in the installation step, the girders 200X, 200Y and the end of the sub-beam 210 opposite to the end connected to the girder 200Y are lifted up. This allows the base unit 500 to be lifted in a well-balanced manner.

[0060] Furthermore, according to this embodiment, in the overall base assembly step, the girders 200X, 200Y, sub-beams 210, and joints 300 within the base unit 500 are connected with permanent bolts, and other connections are made with temporary fastening members, and in the division step, the temporary fastening members are removed. This reduces the connection work using permanent bolts after erection, and the use of temporary fastening members simplifies base assembly.

[0061] Furthermore, according to this embodiment, the base assembly step is carried out on a floor slab on which construction has been completed in the third construction section, which is separate from the first construction section that is the target of construction. This makes it easy to carry out the base assembly step even on a small site.

[0062] Furthermore, according to this embodiment, the base assembly step is performed by placing the joint member 300 on the joint 300 of the column 100 for which construction has already been completed. In the base assembly step, a large load acts on the ground from the joint member 300, but by performing this on the column 100 or the girders 200X, 200Y, the load can be reliably supported without putting a strain on the slab. [Explanation of symbols]

[0063] 1: Column beam frame 100: Column member (column) 110: Pillar body 120: Column main reinforcement 130: Mechanical coupling 200X: girder 200Y: Large beam 210: Small beam 220: Sun Liang 300: Joint material (joint) 310: Enclosure 320: Steel beam 330: Band plate 400: Mounting stand 410: Front extension part 420: Rear extension part 430:Left extension part 440:Right extension part 460:Protrusion 470: Alignment member 500: Reference unit 510: Exterior wall unit 600: Temporary beam 610: Wire 620: Lifting member

Claims

1. A method for constructing a column-beam frame having reinforced concrete columns and steel beams by a building escape method in which a column-beam frame is constructed in multiple construction sections, a base assembling step for assembling a unit including a joint member, a plurality of girders including a pair of beams perpendicular to each other and connected to the joint member, and a sub-beam connected to one of the pair of beams; an erection step of erecting the unit; A method for constructing a beam-column frame, including:

2. The unit comprises: One joint member; A pair of girders extending in intersecting directions and connected to the joint members; a minor beam located within a plane defined by the pair of major beams; In the erection step, a part of a column-beam frame is constructed by connecting a plurality of units. A method for constructing a beam-column structure according to claim 1.

3. In the base assembly step, an overall ground assembly step for integrally assembling girders, sub-girders, and joint members of at least a part of the planar sections of the column-beam frame; a dividing step of dividing the girders, joists and joint members of the assembled planar section into a plurality of units; A method for constructing a beam-column structure according to claim 1.

4. The unit further comprises: a grandson beam having one end connected to the other beam of the pair of beams; The main beam intersects with the minor beam; A method for constructing a beam-column structure according to claim 3.

5. In the erection step, temporary beams are attached to the other ends of the plurality of grandchild beams and then lifted. A method for constructing a beam-column structure according to claim 4.

6. In the installation step, Lifting the main girder and the end of the sub-girder opposite to the end connected to the main girder; A method for constructing a beam-column structure according to claim 3.

7. In the overall assembly step, the connections of the main beams, sub-beams, second beams and joint members within the unit are made with permanent bolts, and the connections of members of different units are made with temporary fastening members, In the dividing step, the temporary fastening member is removed. A method for constructing a beam-column structure according to claim 3.

8. The base assembly step includes: This is carried out on a floor slab where construction has been completed in a different construction area from the construction area to be constructed. A method for constructing a beam-column structure according to claim 1.

9. In the base assembly step, Place at least one joint member on a column that has already been constructed. A method for constructing a beam-column structure according to claim 8.

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