A seismic-resistant building based on prefabricated composite panels

Abstract

The present invention relates to the technical field of earthquake-resistant buildings, and in particular to an earthquake-resistant building based on prefabricated composite panels, including load-bearing walls, filling walls, prefabricated composite panels, and cast-in-place reinforced concrete layers, wherein the prefabricated composite panels include concrete layers, long frames, short frames, and steel mesh layers, wherein two parallel long frames and two parallel short frames are welded to form a horizontally placed rectangular frame, and the steel mesh layer is welded and fixed to the top surface of the rectangular frame, and the long frames, short frames, and steel mesh layers form a box body with an opening facing downward, and the height of the box body is equal to the height of the long frames or the short frames plus the thickness of the steel mesh layer, and the concrete layer fills and wraps the steel mesh layer and the rectangular frame body. The composite floor slab of the building has a stronger bearing capacity and will not be crushed by non-load-bearing walls; the composite floor slab has a strong earthquake resistance and will not be easily broken in an earthquake.

Description

Technical Field

[0001] The invention relates to the technical field of earthquake-resistant buildings, and in particular to an earthquake-resistant building based on prefabricated composite panels. Background Art

[0002] With the development of construction technology, prefabricated composite slabs have been widely used in the field of construction due to their fast construction speed and low cost. Among them, composite floor slabs are integral floor slabs composed of prefabricated panels and cast-in-place reinforced concrete layers, which have the advantages of good integrity, high rigidity, and good crack resistance. In the event of an earthquake, depending on the strength of the earthquake resistance, the non-load-bearing walls usually collapse first and fall onto the composite floor slabs, then the composite floor slabs collapse and compress the load-bearing columns and load-bearing walls, and finally the load-bearing columns and load-bearing walls tilt, causing the building to collapse.

[0003] In the prior art, damping elements are usually arranged in the gaps of the wall to improve the earthquake resistance of the building. For example, the invention patent with authorization announcement number CN115059180B provides an assembled earthquake-resistant building system, including an installation platform, on which a wall is vertically arranged, the wall and the installation platform are integrally enclosed to form a box-shaped structure, a composite floor is arranged at the upper end of the wall, and a plurality of composite floors are spliced ​​together to form the floor of the entire assembled building, an active gap is arranged between a side plate surface of the installation platform and one end of the wall, a first buffer sleeve is arranged in the active gap, an active gap is arranged between one end of the wall and the composite floor, a second buffer sleeve is arranged in the active gap; the side surfaces of the wall are spliced ​​together, and a buffer shock-absorbing pad is arranged in the splicing gap between the walls, and the buffer shock-absorbing pad is arranged through the height direction of the wall.

[0004] In the process of realizing the present invention, the inventors found that there are at least the following problems in the prior art: 1. The method of setting buffer parts between walls can alleviate the impact of earthquakes, but it cannot prevent the fracture and collapse of non-load-bearing walls and floor slabs, and the building still has the risk of collapse; 2. The bearing capacity of existing prefabricated composite floor slabs is insufficient, and they are easily crushed and fractured by collapsed non-load-bearing walls during an earthquake. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention develops an earthquake-resistant building based on prefabricated composite slabs. The composite floor slabs of the building have a stronger bearing capacity and will not be crushed by non-load-bearing walls. The composite floor slabs have strong earthquake resistance and will not break easily during an earthquake.

[0006] The technical solution to the technical problem solved by the present invention is as follows: an embodiment of the present invention provides an earthquake-resistant building based on prefabricated composite panels, comprising load-bearing walls, filling walls, prefabricated composite panels, and cast-in-place reinforced concrete layers, wherein the filling walls are filled in the gaps in the frame structure of the load-bearing walls, the prefabricated composite panels are laid flat on the top of the load-bearing walls, and the cast-in-place reinforced concrete layers are arranged above the prefabricated composite panels, the prefabricated composite panels comprise a concrete layer, a long frame, a short frame, and a steel mesh layer, wherein two parallel long frames and two parallel short frames are welded to form a horizontally placed rectangular frame, and the steel mesh layer is welded and fixed on the The top surface of the rectangular frame, the long frame, the short frame and the steel mesh layer form a box body with an opening facing downward, the height of the box body is equal to the height of the long frame or the short frame plus the thickness of the steel mesh layer, and the concrete layer fills and wraps the steel mesh layer and the rectangular frame; the long frame includes a rectangular frame, a bow-shaped beam, and a bow-shaped support rod, the bow-shaped beam is an arc-shaped opening facing downward, the two ends of the bow-shaped beam are respectively connected to the two inner corners of the lower end of the rectangular frame, the top of the bow-shaped beam is connected to the middle upper end of the rectangular frame, the upper and lower sides of the bow-shaped beam are connected to the rectangular frame through the bow-shaped support rod, and the bow-shaped support rod is an arc-shaped opening facing downward.

[0007] As an optimization, an oblique support rod is further provided between the arched beam and the rectangular frame.

[0008] As an optimization, the long frame is provided with two parallel rectangular frames, and the two rectangular frames are connected by a connecting rod.

[0009] As an optimization, the structure of the short frame is the same as that of the long frame.

[0010] As an optimization, the prefabricated composite panel also includes reinforcing ribs, which are arranged above the steel mesh layer and along the length direction of the prefabricated composite panel. The steel mesh layer is provided with a plurality of square grids. The reinforcing ribs include transverse tie rods and diagonal tie rods. The diagonal tie rods are in a group of four. The lower ends of the four diagonal tie rods are respectively connected to the four corners of the square grid of the steel mesh layer and the top ends are connected as a whole. The top ends of the four diagonal tie rods are located above the center of the square grid, and the transverse tie rods are connected to the top ends of the diagonal tie rods.

[0011] As an optimization, a reinforcing rib is provided on the prefabricated composite board, and the reinforcing rib is located on the central plane of the prefabricated composite board.

[0012] As an optimization, two reinforcing ribs are arranged on the prefabricated composite board, and the two reinforcing ribs are respectively located on both sides of the center plane of the prefabricated composite board.

[0013] As an optimization, a steel mesh is provided in the cast-in-place reinforced concrete layer, and the steel mesh is welded to the transverse tie rods on each prefabricated composite plate as a whole.

[0014] As an optimization, a clip strip is also provided at the top center of the load-bearing wall, and a rectangular step is provided at the bottom edge of the prefabricated composite board. The width of the clip strip is less than twice the width of the step, and the step at the bottom edge of the prefabricated composite board is clamped on the clip strip.

[0015] The effects provided in the summary of the invention are only the effects of the embodiments, rather than all the effects of the present invention. The above technical solution has the following advantages or beneficial effects:

[0016] 1. By setting long and short frames in the prefabricated composite slab, the thickness of the prefabricated composite slab around is increased, and the thickness of the central part of the prefabricated composite slab remains unchanged, which will not affect the floor height. A layer of prefabricated composite slab is laid flat on the top of the load-bearing wall, and then a cast-in-place reinforced concrete layer is poured on top of the prefabricated composite slab. The resulting composite floor has a stronger bearing capacity and will not be crushed by the collapsed filling wall; the composite floor has good compression and tensile properties and strong earthquake resistance, and will not easily break due to pressure or tension during an earthquake. By setting an arched beam in a rectangular frame and connecting the arched beam and the rectangular frame with an arched support rod and an inclined support rod, the compression and tensile strength of the long and short frames are improved, thereby improving the compression and tensile strength of the prefabricated composite slab.

[0017] 2. The strength of the composite floor can be improved by setting reinforcement bars above the steel mesh layer along the length direction of the prefabricated composite slab. The distance between the reinforcement bar and the long frame is greater than half of the distance between the two reinforcement bars. The diameter of the horizontal tie rod is greater than the diameter of the diagonal tie rod. The horizontal tie rod can improve the strength of the prefabricated composite slab, and hooks can also be installed to facilitate the lifting of the prefabricated composite slab. The steel mesh is set in the cast-in-place reinforced concrete layer to improve the strength of the cast-in-place reinforced concrete layer.

[0018] 3. During installation, prefabricated composite panels are installed on one or both sides of the card strip. By setting the card strip and the width of the card strip is less than twice the width of the step, the step is stuck on the card strip, which facilitates the installation of the prefabricated composite panels. There is a gap in the connection between the prefabricated composite panels and the load-bearing wall. When subjected to strong vibration, the composite floor can move within a certain range in the horizontal direction, thereby improving the seismic resistance of the composite floor. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is an overall structural diagram of an embodiment of the present invention (the cast-in-place reinforced concrete layer is set to a transparent state).

[0020] Figure 2 for Figure 1 A partial enlarged view of area B in the middle.

[0021] Figure 3 The present invention is a front view of an embodiment of a prefabricated composite panel.

[0022] Figure 4 A top view of an embodiment of a prefabricated composite panel.

[0023] Figure 5 A right side view of an embodiment of a prefabricated composite panel.

[0024] Figure 6 This is a stereoscopic image of an embodiment of a prefabricated composite panel from the upper left side of the front side.

[0025] Figure 7 This is a stereoscopic image of an embodiment of a prefabricated composite panel from the lower left side of the front side.

[0026] Figure 8 This is a front view of an embodiment of a prefabricated composite panel with the concrete layer hidden.

[0027] Figure 9 This is a right side view of an embodiment of a prefabricated composite panel with the concrete layer hidden.

[0028] Figure 10 A top view of an embodiment of a prefabricated composite panel with the concrete layer hidden.

[0029] Figure 11 A three-dimensional view of an embodiment of a prefabricated composite panel with the concrete layer hidden.

[0030] Figure 12 for Figure 11 A partial enlarged view of area A.

[0031] Figure 13 The present invention is a three-dimensional diagram of an embodiment of a long frame.

[0032] Figure 14 A front view of an embodiment of a long frame.

[0033] Figure 15 A three-dimensional diagram of an embodiment of a reinforcing rib.

[0034] Figure 16 A three-dimensional diagram of an embodiment of a short frame.

[0035] Among them: load-bearing wall 1, filling wall 2, prefabricated composite slab 3, clamping strip 4, cast-in-place reinforced concrete layer 5, concrete layer 31, long frame 32, short frame 33, steel mesh layer 34, reinforcing ribs 35, rectangular frame 321, arched beam 322, arched support rod 323, oblique support rod 324, connecting rod 325, transverse tie rod 351, oblique tie rod 352. DETAILED DESCRIPTION

[0036] In order to clearly illustrate the technical features of the present invention, the present invention is described in detail below through specific implementation methods and in conjunction with the accompanying drawings.

[0037] Figures 1 to 16 As an embodiment of the present invention, Figure 1As shown, an earthquake-resistant building based on prefabricated composite slabs includes a load-bearing wall 1, a filling wall 2, a prefabricated composite slab 3, and a cast-in-place reinforced concrete layer 5. The filling wall 2 is filled in the gap of the frame structure of the load-bearing wall 1, the prefabricated composite slab 3 is laid flat on the top of the load-bearing wall 1, and the cast-in-place reinforced concrete layer 5 is arranged above the prefabricated composite slab 3.

[0038] like Figures 3 to 12 As shown, the prefabricated composite panel 3 includes a concrete layer 31, a long frame 32, a short frame 33, and a steel mesh layer 34. Two parallel long frames 32 and two parallel short frames 33 are welded to form a horizontally placed rectangular frame. The steel mesh layer 34 is welded and fixed to the top surface of the rectangular frame. The long frames 32, the short frames 33 and the steel mesh layer 34 form a box with an opening facing downward. The height of the box is equal to the height of the long frames 32 or the short frames 33 plus the thickness of the steel mesh layer 34. The concrete layer 31 fills and wraps the steel mesh layer 34 and the rectangular frame.

[0039] like Figure 13 , Figure 14 As shown, the long side frame 32 includes a rectangular frame 321, an arched beam 322, and an arched support rod 323. The arched beam 322 is an arc shape with an opening facing downwards. The two ends of the arched beam 322 are respectively connected to the two inner corners of the lower end of the rectangular frame 321. The top of the arched beam 322 is connected to the middle upper end of the rectangular frame 321. The upper and lower sides of the arched beam 322 are connected to the rectangular frame 321 through the arched support rod 323. The arched support rod 323 is an arc shape with an opening facing downwards. An oblique support rod 324 is also provided between the arched beam 322 and the rectangular frame 321. The long side frame 32 is provided with two parallel rectangular frames 321, and the two rectangular frames 321 are connected by a connecting rod 325.

[0040] like Figure 16 As shown, the structure of the short frame 33 is the same as that of the long frame 32. By arranging the arched beam 322 in the rectangular frame 321, and connecting the arched beam 322 and the rectangular frame 321 with the arched support rod 323 and the oblique support rod 324, the compressive and tensile strengths of the long frame 32 and the short frame 33 are improved, and the compressive and tensile strengths of the prefabricated composite board 3 can be improved.

[0041] like Figure 11 , Figure 12 As shown, the prefabricated composite plate 3 further includes reinforcing ribs 35, which are arranged above the steel mesh layer 34. The reinforcing ribs 35 are arranged along the length direction of the prefabricated composite plate 3, and the steel mesh layer 34 is provided with a plurality of square grids; Figure 15As shown, the reinforcing ribs 35 include a transverse tie rod 351 and an oblique tie rod 352. The oblique tie rods 352 are grouped into four. The lower ends of the four oblique tie rods 352 are respectively connected to the four corners of the square grid of the steel mesh layer 34, and the top ends are connected as a whole. The top ends of the four oblique tie rods 352 are located above the center of the square grid, and the transverse tie rod 351 is connected to the top ends of the oblique tie rods 352. Two reinforcing ribs 35 are arranged on the prefabricated composite board 3, and the two reinforcing ribs 35 are respectively located on both sides of the center plane of the prefabricated composite board 3. The spacing between the reinforcing ribs 35 and the long frame 32 is greater than half of the spacing between the two reinforcing ribs 35. The diameter of the transverse tie rod 351 is greater than the diameter of the oblique tie rod 352.

[0042] The strength of the composite floor slab can be improved by providing the reinforcing ribs 35. The horizontal tie rods 351 can improve the strength of the prefabricated composite slab 3 and can also be used to install hooks to facilitate the hoisting of the prefabricated composite slab 3.

[0043] like Figure 1 As shown, a steel mesh is provided in the cast-in-place reinforced concrete layer 5, and the steel mesh is welded to the cross tie rods 351 on each prefabricated composite plate 3. The steel mesh is provided in the cast-in-place reinforced concrete layer 5 to improve the strength of the cast-in-place reinforced concrete layer 5.

[0044] like Figure 2 As shown, a clamping strip 4 is also provided at the top center of the load-bearing wall 1 , and a rectangular step is provided at the bottom edge of the prefabricated composite board 3 . The width of the clamping strip 4 is less than twice the width of the step, and the step at the bottom edge of the prefabricated composite board 3 is clamped on the clamping strip 4 .

[0045] By setting the long frame 32 and the short frame 33, the thickness of the prefabricated composite board 3 is increased, and the thickness of the central part of the prefabricated composite board 3 does not change, which will not affect the floor height. A layer of prefabricated composite board 3 is laid flat on the top of the load-bearing wall 1, and then a cast-in-place reinforced concrete layer 5 is poured on the top of the prefabricated composite board 3. The formed composite floor has a stronger bearing capacity and will not be crushed by the collapsed filling wall; the composite floor has good compression and tensile properties and strong earthquake resistance, and will not easily break due to pressure or tension during an earthquake.

[0046] During installation, prefabricated composite panels 3 are installed on one or both sides of the clip strip 4. By setting the clip strip 4 and making the width of the clip strip 4 less than twice the width of the step, the step is clipped on the clip strip 4, which facilitates the installation of the prefabricated composite panels 3. There is a gap in the connection between the prefabricated composite panels 3 and the load-bearing wall 1. When subjected to strong vibration, the composite floor can move within a certain range in the horizontal direction, thereby improving the seismic resistance of the composite floor.

[0047] Although the above describes the specific implementation mode of the invention in conjunction with the drawings, it is not intended to limit the scope of protection of the invention. Based on the technical solution of the present invention, various modifications or variations that can be made by those skilled in the art without creative work are still within the scope of protection of the present invention.

Claims

1. An earthquake-resistant building based on prefabricated composite panels, comprising a load-bearing wall (1), a filling wall (2), a prefabricated composite panel (3), and a cast-in-place reinforced concrete layer (5), wherein the filling wall (2) is filled in the gap of the frame structure of the load-bearing wall (1), the prefabricated composite panel (3) is laid flat on the top of the load-bearing wall (1), and the cast-in-place reinforced concrete layer (5) is arranged above the prefabricated composite panel (3), wherein the characteristics are: The prefabricated composite plate (3) comprises a concrete layer (31), a long frame (32), a short frame (33), and a steel mesh layer (34); two parallel long frames (32) and two parallel short frames (33) are welded to form a horizontally placed rectangular frame; the steel mesh layer (34) is welded and fixed to the top surface of the rectangular frame; the long frame (32), the short frame (33) and the steel mesh layer (34) form a box body with an opening facing downward; the height of the box body is equal to the height of the long frame (32) or the short frame (33) plus the thickness of the steel mesh layer (34); the concrete layer (31) Fill and wrap the steel mesh layer (34) and the rectangular frame; the long frame (32) comprises a rectangular frame (321), an arched beam (322), and an arched support rod (323); the arched beam (322) is in the shape of an arc with an opening facing downward; the two ends of the arched beam (322) are respectively connected to the two inner corners of the lower end of the rectangular frame (321); the top of the arched beam (322) is connected to the middle upper end of the rectangular frame (321); the upper and lower sides of the arched beam (322) are connected to the rectangular frame (321) through the arched support rod (323); the arched support rod (323) is in the shape of an arc with an opening facing downward.

2. The earthquake-resistant building based on prefabricated composite panels according to claim 1 is characterized in that: An oblique support rod (324) is also provided between the arched beam (322) and the rectangular frame (321).

3. The earthquake-resistant building based on prefabricated composite panels according to claim 2 is characterized in that: The long frame (32) is provided with two parallel rectangular frames (321), and the two rectangular frames (321) are connected via a connecting rod (325).

4. The earthquake-resistant building based on prefabricated composite panels according to claim 3 is characterized in that: The structure of the short frame (33) is the same as that of the long frame (32).

5. The earthquake-resistant building based on prefabricated composite panels according to claim 1 is characterized in that: The prefabricated composite plate (3) further comprises reinforcing ribs (35), wherein the reinforcing ribs (35) are arranged above the steel mesh layer (34), and the reinforcing ribs (35) are arranged along the length direction of the prefabricated composite plate (3), and the steel mesh layer (34) is provided with a plurality of square grids; the reinforcing ribs (35) comprise transverse tie rods (351) and diagonal tie rods (352), and the diagonal tie rods (352) are arranged in groups of four, and the lower ends of the four diagonal tie rods (352) are respectively connected to the four corners of the square grid of the steel mesh layer (34), and the top ends are connected as a whole, and the top ends of the four diagonal tie rods (352) are located above the center of the square grid, and the transverse tie rods (351) are connected to the top ends of the diagonal tie rods (352).

6. The earthquake-resistant building based on prefabricated composite panels according to claim 5 is characterized in that: The prefabricated composite plate (3) is provided with a reinforcing rib (35), and the reinforcing rib (35) is located on the central plane of the prefabricated composite plate (3).

7. The earthquake-resistant building based on prefabricated composite panels according to claim 5 is characterized in that: The prefabricated composite plate (3) is provided with two reinforcing ribs (35), and the two reinforcing ribs (35) are respectively located on both sides of the center plane of the prefabricated composite plate (3).

8. The earthquake-resistant building based on prefabricated composite panels according to claim 5 is characterized in that: A steel mesh is provided in the cast-in-place reinforced concrete layer (5), and the steel mesh is welded to the transverse tie rods (351) on each prefabricated composite plate (3) as a whole.

9. The earthquake-resistant building based on prefabricated composite panels according to claim 1 is characterized in that: A clip strip (4) is also provided at the top center of the load-bearing wall (1), and a rectangular step is provided at the bottom edge of the prefabricated composite board (3). The width of the clip strip (4) is less than twice the width of the step, and the step at the bottom edge of the prefabricated composite board (3) is clipped on the clip strip (4).

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