Frame structure and construction method

Abstract

The application discloses a frame structure, comprising a prefabricated frame, the prefabricated frame comprising frame columns, frame beams, secondary beams and floors; a post-cast rocking frame for making inter-story shear force distribution more uniform is arranged between adjacent prefabricated frames; the post-cast rocking frame comprises rocking columns, coupling beams, infill walls, hidden beams and cast-in-situ floors; energy dissipation devices for improving the seismic resistance of the frame structure are arranged between the frame columns and the coupling beams; base pads are arranged at the bottom of the prefabricated frame; and energy absorption pads for absorbing energy and mitigating impact are further arranged between the base pads and the rocking columns. The application further discloses a construction method of the frame structure, comprising foundation construction, assembling the prefabricated frame, assembling the rocking frame, assembling the coupling beams and the second floors, and assembling the energy dissipation devices. The prefabricated frame and the post-cast rocking frame are arranged to enhance the seismic toughness of the overall structure, and the energy dissipation devices and the energy absorption pads are arranged inside to further mitigate the impact caused by earthquakes; the whole structure is constructed by using the prefabricated method, which is convenient to operate.

Description

Technical Field

[0001] This invention belongs to the field of building structure technology, and in particular relates to a frame structure and construction method. Background Technology

[0002] Recent earthquake disasters have demonstrated the immense economic losses and social impact of earthquakes. A significant portion of this economic damage stems from severe damage to buildings during earthquakes, which are difficult to repair afterward; or from prolonged repair times leading to functional interruptions and disruptions to normal production and daily life. To enable structures to quickly restore their intended function under earthquakes of a certain intensity, numerous experts and scholars both domestically and internationally have combined self-resetting and replaceable structural components, proposing a new concept of earthquake-resistant structures with recoverable functionality.

[0003] Replaceable mechanisms and energy dissipation mechanisms are the core mechanisms of recoverable seismic-resistant structures. Swinging mechanisms and self-resetting mechanisms integrate these mechanisms into the structure through different construction and arrangement forms, creating various types of recoverable seismic-resistant structures. In the prior art, Chinese patent application number "2019104159363," entitled "A Vibration-Damping Wall with Self-Resetting Function and Containing Bidirectional Damping Particles," reduces and controls the amplitude of sway by setting damping energy dissipation mechanisms or self-resetting mechanisms at the sway-lift interface between the rigid body and the foundation or between adjacent rigid bodies. However, setting damping energy dissipation devices at the sway-lift interface between the rigid body and the foundation increases the difficulty of structural replacement; for the widespread frame structure system, setting damping energy dissipation devices between adjacent rigid bodies (such as between frame columns and swaying walls) increases structural costs and easily leads to short column failure. Furthermore, most current methods for controlling sway amplitude rely on prestressed tendon tensioning technology, which also has drawbacks such as high cost and complex construction. Summary of the Invention

[0004] Purpose of the invention: The purpose of this invention is to provide a frame structure with good recovery function and low construction difficulty; another purpose of this invention is to provide a construction method for the above-mentioned frame structure.

[0005] Technical solution: The frame structure of the present invention includes a precast frame; the precast frame includes frame columns, frame beams, secondary beams and floor slabs; a post-cast swaying frame is provided between adjacent precast frames to make the inter-story shear force distribution more uniform; the post-cast swaying frame includes swaying columns, connecting beams, infill walls, hidden beams and cast-in-place floor slabs; energy-dissipating components to improve the seismic resistance of the frame structure are provided between the frame columns and connecting beams, a base pad is provided at the bottom of the precast frame, and an energy-absorbing pad layer for absorbing energy and mitigating impact is provided between the base pad and the swaying column.

[0006] The prefabricated frame includes a first frame column and a second frame column. A first combined T-beam is embedded in the second frame column, and the first combined T-beam has a strip hole.

[0007] The floor slab includes a first floor slab and a second floor slab. The first floor slab is connected to the first frame column and frame beam through a post-cast strip. The second floor slab has a pre-embedded bolt at one end near the rocking column, and the pre-embedded bolt is connected to the secondary beam. The second floor slab is connected to the connecting beam through bolt holes reserved on the parallel side.

[0008] The connecting beam is a welded H-shaped steel component, including an H-shaped steel beam, a first end plate, and a first stiffening rib; the secondary beam includes a second end plate and a second stiffening rib, and a strip hole is provided at the intersection of the web of the connecting beam and the second end plate, and the connecting beam is connected to the second end plate by bolts.

[0009] The energy-consuming components include energy-consuming angle steel and energy-consuming plates; the energy-consuming angle steel is installed at the junction of the second frame column and the connecting beam, and at the junction of the sway column and the connecting beam, and the energy-consuming angle steel is bolted to the lower flange of the first combined T-beam, the second combined T-beam, and the connecting beam.

[0010] The concealed beam contains embedded T-shaped parts with bolt holes, and the T-shaped parts are connected to the second stiffening rib of the secondary beam via an energy-dissipating plate.

[0011] The infill wall is a precast component with a groove at the bottom, comprising a steel mesh and lightweight concrete. The steel mesh includes longitudinal bars, transverse bars and a first bent bar. The steel mesh extends outward from the lightweight concrete. The top of the longitudinal bars is fixedly connected to the steel cage of the hidden beam, and the transverse bars are fixedly connected to the steel cage of the swaying column. The longitudinal bars and the first bent bar located in the middle of the infill wall extend outward from the lower surface of the groove.

[0012] The longitudinal reinforcement bars are fixedly connected to the steel cage of the concealed beam, and the transverse reinforcement bars are fixedly connected to the steel cage of the swaying column. The first and second bent reinforcement bars are lapped together and then connected to the concealed beam and the infill wall by high-strength mortar.

[0013] The prefabricated frame is a stainless steel prefabricated frame.

[0014] The construction method for the above-mentioned frame structure includes the following steps:

[0015] Step 1: Foundation construction; The design requires the construction of the foundation for the precast frame and the swaying frame. The foundation beam structure of the swaying frame should be the same as that of the hidden beam, i.e., a protruding section and a second bent reinforcing bar should be set; An energy-absorbing pad layer should be set between the bottom of the bottom swaying column, the bottom of the bottom infill wall and the top surface of the foundation beam.

[0016] Step 2: Assemble the precast frame; install the precast frame in the designed position, and place the extended end of the first combined T-beam pre-embedded in the second frame column on one side of the swaying frame; install the frame beam and the first floor slab, and connect the first floor slab to the frame column and frame beam through post-pouring strips;

[0017] Step 3: Assemble the swaying frame; After installing the prefabricated infill wall above the foundation beam, lap the first bent-up bar in the infill wall with the second bent-up bar in the foundation beam, and then fill the lap surface with high-strength mortar to complete the connection between the foundation beam and the bottom infill wall; Install the steel cage of the bottom swaying column on both sides of the bottom infill wall, and make the extended ends of the second combined T-beam embedded in the steel cage of the bottom swaying column opposite to the extended ends of the first combined T-beam; Fix the extended parts of the horizontal bars of the infill wall to the steel cage of the swaying column; Place the steel cage of the hidden beam on the top of the bottom infill wall, and make the T-shaped parts embedded in the steel cage of the hidden beam face the second floor slab, and then fix the top extended parts of the longitudinal bars to the steel cage of the hidden beam; Install the floor slab reinforcement of the swaying frame, and then pour concrete to cast the bottom swaying column, bottom infill wall, hidden beam and floor slab as a whole; Construct the infill walls, swaying columns, hidden beams and floor slabs of the remaining floors in sequence according to the above steps to complete the assembly of the swaying frame;

[0018] Step 4: Assemble the connecting beam and the second floor slab; install the connecting beam on the extended ends of the first and second combined T-beams, and fix the first end plate of the connecting beam to the extended ends of the first and second combined T-beams with bolts; after fixing the secondary beam to the pre-embedded bolts in the second floor slab, install the second floor slab directly above the connecting beam, and fix the second floor slab to the upper flange of the connecting beam with bolts; fix the second end plate of the secondary beam to the web of the connecting beam; connect the second floor slab to the adjacent first floor slab and frame beam through post-cast strips;

[0019] Step 5: Assemble the energy-consuming components; install the energy-consuming angle steel at both ends of the connecting beam and fix it to the second frame column, the sway column, and the lower flange of the connecting beam with bolts; install the energy-consuming plate at the second stiffening rib of the secondary beam and fix it to the second stiffening rib and the embedded T-shaped parts in the hidden beam with bolts.

[0020] Beneficial effects: Compared with the prior art, the present invention has the following significant advantages:

[0021] (1) The precast frame and the post-cast sway frame in this invention are functionally separated. The former is mainly used for vertical bearing, while the latter can make the inter-story shear force distribution of the structure more uniform and is mainly used to resist horizontal seismic action. In addition, the post-cast sway frame can achieve self-reset by its own weight, without the need for additional damping or other large energy-consuming devices, and does not rely on prestressing tendon tensioning technology. It is easy to construct and does not increase the cost.

[0022] (2) The present invention sets up an energy dissipation component between the precast frame and the post-cast swaying frame as the first line of defense against earthquakes, which is used to resist small and moderate earthquakes, so that the structural system has a replaceable mechanism and improves the seismic toughness of the frame structure system; the bolt connection between the connecting beam of the swaying frame and the second floor slab has a friction energy dissipation mechanism. This design makes up for the shortcomings of the traditional frame structure system which is limited to the energy dissipation design of strong column and weak beam, and can significantly reduce the design difficulty of the frame structure and the instability of the force transmission mechanism.

[0023] (3) The present invention also provides a second bent-up steel bar, which can make the frame structure system form a hinge when subjected to a major earthquake, further dissipating the earthquake energy; at the same time, it can ensure that the infill wall does not fall, thereby protecting life safety, reducing the obstacles to earthquake relief, and further improving the seismic toughness of the frame structure.

[0024] (4) The energy-absorbing pad layer set between the post-cast swaying frame and the foundation beam in this invention can not only further absorb seismic energy and avoid the impact of swaying columns and infill walls on the foundation, but also serve as one of the key monitoring parts of the structural system. That is, by providing feedback on indicators such as the deformation of the energy-absorbing pad layer and the overflow of energy-absorbing materials, the designer can assess the degree of damage to the structure in real time, which is conducive to promoting the formation of digital earthquake resistance technology. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is a cross-sectional view of AA.

[0027] Figure 3 This is a schematic diagram of the construction of the second frame column in this invention;

[0028] Figure 4 This is a schematic diagram of the structure of the rocking column in this invention;

[0029] Figure 5 This is a schematic diagram of the structure of the connecting beam in this invention;

[0030] Figure 6 This is a schematic diagram showing the connection between the secondary beam and the connecting beam in this invention;

[0031] Figure 7 This is a schematic diagram of the connection structure between the second floor slab and the connecting beam and secondary beam in this invention;

[0032] Figure 8 This is a schematic diagram of the energy-dissipating angle steel structure in this invention;

[0033] Figure 9 This is a schematic diagram showing the connection between the energy-dissipating angle steel and the second frame column and connecting beam in this invention;

[0034] Figure 10 This is a schematic diagram of the structure of the infill wall in this invention;

[0035] Figure 11 This is a schematic diagram of the steel mesh arrangement of the infill wall in this invention;

[0036] Figure 12 This is a schematic diagram of the reinforcement arrangement of the hidden beam or foundation beam in this invention. Detailed Implementation

[0037] like Figure 1 As shown, the frame structure of the present invention includes a base pad 1, a precast frame 2, a post-cast swaying frame 3, and an energy-dissipating component 4; the post-cast swaying frame 3 is disposed between two adjacent sets of precast frames 2, and an energy-dissipating component 4 is provided between the post-cast swaying frame 3 and the precast frame 2 to improve the seismic resistance of the frame structure; an energy-absorbing pad layer 5 for absorbing energy and mitigating impact is also provided between the base pad 1 and the post-cast swaying frame 3.

[0038] The precast frame 2 includes frame columns 21, frame beams 22, secondary beams 23, and floor slabs 24; the post-cast swaying frame 3 includes swaying columns 31, connecting beams 32, infill walls 33, hidden beams 34, and cast-in-place floor slabs 35. The post-cast swaying frame 3 is located between adjacent precast frames 2 and is connected to the frame columns 21 and floor slabs 24 of the precast frames 2 through connecting beams 32; the swaying columns 31, hidden beams 34, and cast-in-place floor slabs 35 are cast as a single unit. The swaying columns 31 are disconnected from the base pad 1, and an energy-absorbing pad layer 5 is provided between the swaying columns 31 and the base pad 1.

[0039] like Figure 2-3 As shown, the frame columns 21 in the prefabricated frame 2 include a first frame column 211 and a second frame column 212. A first combined T-beam 213 is pre-embedded in the second frame column 212, and the first combined T-beam 213 is provided with strip holes.

[0040] like Figure 4 As shown, the steel cage of the rocker column 31 in the post-cast frame 3 is pre-embedded with the second combined T-beam 311, and the second combined T-beam 311 is provided with bolt holes.

[0041] like Figure 5-6 As shown, the connecting beam 32 is a welded steel section, including an H-beam 321, a first end plate 322, and a first stiffening rib 323; the secondary beam 23 is welded with a second end plate 231 and a second stiffening rib 232, and a strip hole is provided at the position where the web of the connecting beam 32 intersects with the second end plate 231, and the connecting beam 32 and the second end plate 231 are connected by bolts.

[0042] like Figure 2 , 7As shown, the floor slab 24 in the precast frame 2 includes a first floor slab 241 and a second floor slab 242. The first floor slab 241 is connected to the first frame column 211 and the frame beam 22 by means of a post-cast strip 214. A bolt 243 is pre-embedded at one end of the second floor slab 242 perpendicular to the swing direction of the swing column 31. The pre-embedded bolt 243 is fixedly connected to the secondary beam 23. A set of parallel edges of the second floor slab 242 parallel to the swing direction of the swing column 31 are reserved with bolt holes and are connected to the post-cast swing frame 3 by means of a connecting beam 32.

[0043] like Figure 7-9 As shown, the energy-dissipating component 4 includes an energy-dissipating angle steel 41 and an energy-dissipating plate 42. The energy-dissipating angle steel 41 is located at the junction of the second frame column 212 and the connecting beam 32, as well as at the junction of the sway column 31 and the connecting beam 32. The energy-dissipating angle steel 41 is bolted to the lower flange of the first combined T-beam 213, the second combined T-beam 311, and the connecting beam 32. A T-shaped component 343 is pre-embedded in the concealed beam 34. The T-shaped component 343 is provided with bolt holes. The T-shaped component 343 is connected to the second stiffening rib 232 of the secondary beam 23 through the energy-dissipating plate 42.

[0044] like Figure 10-12 As shown, the infill wall 33 is a precast component with a groove, including a steel mesh 331 and lightweight concrete 332. The steel mesh 331 includes longitudinal bars 3311, transverse bars 3312, and a first bent-up bar 3313. The steel mesh 331 extends outward from the lightweight concrete 332, and the longitudinal bars 3311 and the first bent-up bar 3313 extend outward from the lower surface of the groove. The concealed beam 34 or foundation beam has a protruding section, and a second bent-up bar 341 is provided inside the concealed beam 34, with the second bent-up bar 341 extending outward from the upper surface of the protruding section. The top protruding part of the longitudinal bar 3311 is fixedly connected to the steel cage of the concealed beam 34, and the protruding part of the transverse bar 3312 is fixedly connected to the steel cage of the swaying column 31. The first bent-up bar 3313 and the second bent-up bar 341 are overlapped and then connected by high-strength mortar 342. Figure 2 Complete the connection between the hidden beam 34 and the infill wall 33.

[0045] The assembly method of the frame structure of the present invention includes the following steps:

[0046] Step 1: Foundation pad 1 construction; construct the foundations of the precast frame 2 and the swaying frame 3 according to the design requirements. The foundation beam structure of the swaying frame 3 should be the same as that of the hidden beam 34, i.e., it should have a protruding section and a second bent reinforcing bar 341; an energy-absorbing pad layer 5 should be set between the bottom of the bottom swaying column 31, the bottom of the bottom infill wall 33 and the top surface of the foundation beam.

[0047] The second step is to assemble the precast frame 2; install the precast frame 2 in the designed position, and place the extended end of the first combined T-beam 213 pre-embedded in the second frame column 212 on one side of the swing frame 3; install the frame beam 22 and the first floor slab 241, and connect the first floor slab 241 to the frame column 21 and the frame beam 22 through the post-pouring strip 214.

[0048] Step 3: Assemble the swaying frame 3; After installing the prefabricated infill wall 33 above the foundation beam, overlap the first bent-up bar 3313 in the infill wall 33 with the second bent-up bar 341 in the foundation beam, and then fill the overlap surface with high-strength mortar 342 to complete the connection between the foundation beam and the bottom infill wall 33; Install the steel cage of the bottom swaying column 31 on both sides of the bottom infill wall 33, and make the extended end of the second combined T-beam 311 embedded in the steel cage of the bottom swaying column 31 opposite to the extended end of the first combined T-beam 213; Then, connect the extended part of the horizontal bar 3312 of the infill wall 33 with... The steel cage of the sway column 31 is fixedly connected; the steel cage of the hidden beam 34 is placed on the top of the bottom infill wall 33, and the T-shaped piece 343 pre-embedded in the steel cage of the hidden beam 34 faces the second floor slab 242. Then the top of the longitudinal reinforcement 3311 is fixedly connected to the steel cage of the hidden beam 34; the floor slab reinforcement of the sway frame 3 is installed, and then concrete is poured to cast the bottom sway column 31, the bottom infill wall 33, the hidden beam 34 and the floor slab 35 into a whole; the infill wall 33, the sway column 31, the hidden beam 34 and the floor slab 35 of the remaining floors are constructed in sequence according to the above steps to complete the assembly of the sway frame 3.

[0049] Step 4: Assemble the connecting beam 32 and the second floor slab 242; install the connecting beam 32 on the extended ends of the first combined T-beam 213 and the second combined T-beam 311, and fix the first end plate 322 of the connecting beam 32 to the extended ends of the first combined T-beam 213 and the second combined T-beam 311 with bolts; after fixing the secondary beam 23 to the pre-embedded bolts 243 in the second floor slab 242, install the second floor slab 242 directly above the connecting beam 32, fix the second floor slab 242 to the upper flange of the connecting beam 32 with bolts, and fix the second end plate 231 of the secondary beam 23 to the web of the connecting beam 32; connect the second floor slab 242 to the adjacent first floor slab 241 and frame beam 22 through the post-cast strip 214.

[0050] Step 5: Assemble the energy-consuming component 4; install the energy-consuming angle steel 41 at both ends of the connecting beam 32, and fix it to the second frame column 212, the sway column 31, and the lower flange of the connecting beam 32 with bolts; install the energy-consuming plate 42 at the second stiffening rib 232 of the secondary beam 23, and fix the energy-consuming plate 42 to the second stiffening rib 232 and the embedded T-shaped part 343 in the hidden beam 34 with bolts.

Claims

1. A frame structure comprising a prefabricated frame (2); characterized in that: The adjacent precast frames (2) are provided with a cast-in-place sway frame (3) to make the inter-story shear force distribution more uniform; the precast frame (2) includes frame columns (21), frame beams (22), secondary beams (23) and floor slabs (24); the cast-in-place sway frame (3) includes sway columns (31), connecting beams (32), infill walls (33), hidden beams (34) and cast-in-place floor slabs (35); there are energy-absorbing components (4) between the frame columns (21) and connecting beams (32) to improve the seismic resistance of the frame structure, and a base pad (1) is provided at the bottom of the precast frame (2), and an energy-absorbing pad layer (5) is provided between the base pad (1) and the sway column (31) to absorb energy and reduce impact. The floor slab (24) includes a first floor slab (241) and a second floor slab (242). The first floor slab (241) is connected to the first frame column (211) and the frame beam (22) through a post-cast strip (214). The second floor slab (242) has a pre-embedded bolt (243) at one end near the rocking column (31), and the pre-embedded bolt (243) is connected to the secondary beam (23). The second floor slab (242) is connected to the connecting beam (32) through bolt holes reserved on the parallel side. The energy-consuming component (4) includes an energy-consuming angle steel (41) and an energy-consuming plate (42); the energy-consuming angle steel (41) is set at the junction of the second frame column (212) and the connecting beam (32), and at the junction of the sway column (31) and the connecting beam (32); the energy-consuming angle steel (41) is bolted to the lower flange of the first combined T-beam (213), the second combined T-beam (311), and the connecting beam (32); The infill wall (33) is a precast component with a groove at the bottom, including a steel mesh (331) and lightweight concrete (332). The steel mesh (331) includes longitudinal bars (3311), transverse bars (3312) and a first bent bar (3313). The steel mesh (331) extends out of the lightweight concrete (332). The top of the longitudinal bars (3311) is fixedly connected to the steel cage of the hidden beam (34), and the transverse bars (3312) are fixedly connected to the steel cage of the sway column (31). The longitudinal bars (3311) and the first bent bar (3313) located in the middle of the infill wall (33) extend out of the lower surface of the groove.

2. The frame structure according to claim 1, characterized in that, The prefabricated frame (2) includes a first frame column (211) and a second frame column (212). A first combined T-beam (213) is pre-embedded in the second frame column (212), and the first combined T-beam (213) is provided with a strip hole.

3. The frame structure according to claim 1, characterized in that, The connecting beam (32) is a welded H-shaped steel component, including an H-shaped steel beam (321), a first end plate (322), and a first stiffening rib (323); the secondary beam (23) includes a second end plate (231) and a second stiffening rib (232). A strip hole is provided at the position where the web of the connecting beam (32) intersects with the second end plate (231). The connecting beam (32) and the second end plate (231) are connected by bolts.

4. A frame structure according to claim 1, characterized in that, T-shaped parts (343) are pre-embedded in the hidden beam (34). The T-shaped parts (343) are provided with bolt holes. The T-shaped parts (343) are connected to the second stiffening rib (232) of the secondary beam (23) through the energy dissipation plate (42).

5. A frame structure according to claim 4, characterized in that, The top extension of the longitudinal reinforcement (3311) is fixedly connected to the steel cage of the hidden beam (34), and the extension of the transverse reinforcement (3312) is fixedly connected to the steel cage of the sway column (31). After the first bent reinforcement (3313) and the second bent reinforcement (341) overlap, the connection between the hidden beam (34) and the infill wall (33) is achieved by high-strength mortar (342).

6. A frame structure according to claim 1, characterized in that, The prefabricated frame is a stainless steel prefabricated frame.

7. The construction method of the frame structure according to any one of claims 1 to 6, characterized in that, Includes the following steps: Step 1, Construction of the base pad (1); The design requires the foundation construction of the precast frame (2) and the swaying frame (3). The foundation beam structure of the swaying frame (3) should be the same as that of the hidden beam (34), that is, a protruding section and a second bent reinforcing bar (341) are set; An energy-absorbing pad layer (5) is set between the bottom of the bottom swaying column (31), the bottom of the bottom infill wall (33) and the top surface of the foundation beam. Step 2: Assemble the precast frame (2); Install the precast frame (2) in the designed position, and place the extended end of the first combined T-beam (213) pre-embedded in the second frame column (212) on one side of the swing frame (3); Install the frame beam (22) and the first floor slab (241), and connect the first floor slab (241) to the frame column (21) and the frame beam (22) through the post-pouring strip (214); Step 3: Assemble the swaying frame (3); After installing the prefabricated infill wall (33) above the foundation beam, overlap the first bent-up bar (3313) in the infill wall (33) with the second bent-up bar (341) in the foundation beam, and then fill the overlap surface with high-strength mortar (342) to complete the connection between the foundation beam and the bottom infill wall (33); Install the steel cage of the bottom swaying column (31) on both sides of the bottom infill wall (33), and make the extended end of the second combined T-beam (311) embedded in the steel cage of the bottom swaying column (31) opposite to the extended end of the first combined T-beam (213); Connect the extended part of the horizontal bar (3312) of the infill wall (33) with the swaying column (31) The steel cage of the hidden beam (34) is fixedly connected; the steel cage of the hidden beam (34) is placed on the top of the bottom infill wall (33), and the T-shaped piece (343) embedded in the steel cage of the hidden beam (34) faces the second floor slab (242). Then the top of the longitudinal reinforcement (3311) is fixedly connected to the steel cage of the hidden beam (34); the floor slab reinforcement of the swing frame (3) is installed, and then concrete is poured to cast the bottom swing column (31), the bottom infill wall (33), the hidden beam (34) and the floor slab (35) into a whole; the infill wall (33), swing column (31), hidden beam (34) and floor slab (35) of the remaining floors are constructed in sequence according to the above steps to complete the assembly of the swing frame (3); Step 4: Assemble the connecting beam (32) and the second floor slab (242); install the connecting beam (32) on the extended ends of the first combined T-beam (213) and the second combined T-beam (311), and fix the first end plate (322) of the connecting beam (32) to the extended ends of the first combined T-beam (213) and the second combined T-beam (311) with bolts; after fixing the secondary beam (23) to the pre-embedded bolts (243) in the second floor slab (242), install the second floor slab (242) directly above the connecting beam (32), fix the second floor slab (242) to the upper flange of the connecting beam (32) with bolts, fix the second end plate (231) of the secondary beam (23) to the web of the connecting beam (32); connect the second floor slab (242) to the adjacent first floor slab (241) and frame beam (22) with post-cast strips (214); Step 5: Assemble the energy-consuming components (4); install the energy-consuming angle steel (41) at both ends of the connecting beam (32) and fix it to the second frame column (212), the sway column (31) and the lower flange of the connecting beam (32) by bolts; install the energy-consuming plate (42) at the second stiffening rib (232) of the secondary beam (23) and fix the energy-consuming plate (42) to the second stiffening rib (232) and the embedded T-shaped part (343) in the hidden beam (34) by bolts.

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