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CN-121992901-A - High-toughness assembled prefabricated energy dissipation shear wall and construction method thereof

CN121992901ACN 121992901 ACN121992901 ACN 121992901ACN-121992901-A

Abstract

The invention discloses a high-toughness assembled prefabricated energy dissipation shear wall and a construction method thereof, wherein the high-toughness assembled prefabricated energy dissipation shear wall comprises a steel pipe column, a connecting steel plate, a damper and a connecting wallboard; the steel pipe column assembly comprises a plurality of steel pipe columns, a plurality of dampers, a plurality of connecting steel plates, a plurality of screw bolts, a connecting wallboard and a plurality of connecting steel plates, wherein the plurality of steel pipe columns are arranged in parallel through the axes, an assembly gap is formed between two opposite wall surfaces of two adjacent steel pipe columns, the connecting steel plates are welded and fixed on two opposite outer walls of the two adjacent steel pipe columns, the plurality of dampers are arranged in the assembly gap at intervals along the height direction of the steel pipe columns, the two ends of the plurality of dampers are respectively connected to the two connecting steel plates through screw bolts in a threaded mode, the connecting wallboard is formed by pouring light concrete or foam concrete, and the light concrete or the foam concrete is poured in the assembly gap and wraps the dampers. The invention utilizes the steel pipe column to replace the traditional wallboard structure, realizes the connection between the damper and the steel pipe column through the screw and the connecting steel plate, realizes the easy assembly of the shear wall, consumes energy brought by earthquake, and comprehensively improves the earthquake resistance of the shear wall.

Inventors

  • CHEN YUN
  • LIU ZHIQI
  • SHEN DEJIAN
  • LU ZHENG
  • JIANG HUANJUN

Assignees

  • 海南大学

Dates

Publication Date
20260508
Application Date
20260305

Claims (10)

  1. 1. The utility model provides a prefabricated energy dissipation shear force wall of high toughness assembly type which characterized in that includes: the steel pipe columns (1) are arranged in parallel, and the axes of the steel pipe columns (1) are arranged in parallel, and an assembly gap is reserved between two opposite wall surfaces of two adjacent steel pipe columns (1); The connecting steel plates (2) are welded and fixed on two opposite outer walls of two adjacent steel pipe columns (1); The number of the dampers (3) is multiple, and the dampers are arranged in the assembly gap at intervals along the height direction of the steel pipe column (1), and two ends of the dampers (3) are respectively connected to the two connecting steel plates (2) through screw threads of screw rods (4); The connecting wallboard (5) is formed by pouring light concrete or foam concrete, and the light concrete or the foam concrete is poured in the assembly gap and wraps the damper (3).
  2. 2. The high-toughness prefabricated energy dissipation shear wall according to claim 1 is characterized in that the damper (3) is a graded yielding metal damper, the graded yielding metal damper comprises an inner annular plate (31), an outer annular plate (32) and a backing plate (33), the inner annular plate (31) and the outer annular plate (32) comprise arc sections which are arranged up and down and straight line sections which connect the two arc sections, the inner annular plate (31) is coaxially arranged in an inner cavity of the outer annular plate (32), the backing plate (33) is embedded between two opposite wall surfaces of the straight line sections of the inner annular plate (31) and the straight line sections of the outer annular plate (32), and the threaded ends of the screw rods (4) sequentially penetrate through the straight line sections of the inner annular plate (31), the backing plate (33) and the straight line sections of the outer annular plate (32) and are fastened with the connecting steel plate (2) through nuts.
  3. 3. The high-toughness prefabricated energy dissipation shear wall is characterized in that the number of the screws (4) is multiple and the screws are embedded in the connecting steel plate (2), and bolt holes which are mutually communicated and correspond to the screws (4) one by one are formed in the inner ring plate (31), the base plate (33) and the outer ring plate (32).
  4. 4. The high-toughness prefabricated energy dissipation shear wall according to claim 1, wherein the damper (3) is a reserved gap damper, the reserved gap damper comprises an upper substrate (34), a lower substrate (35), a stop block (36), first energy dissipation metal plates (37) and second energy dissipation metal plates (38), the plate surfaces of the lower substrate (35) are opposite to the plate surfaces of the upper substrate (34) and are fastened with the connecting steel plates (2) through screws (4), one end surface of the stop block (36) is fixed on one side plate surface, facing the lower substrate (35), of the upper substrate (34), a plurality of grooves (361) are formed in one end surface, facing away from the upper substrate (34), of the stop block (36), the number of the first energy dissipation metal plates (37) is two, the two ends of the first energy dissipation metal plates (37) are located at two ends of the reserved gap damper, the two ends of the first energy dissipation metal plates (37) are opposite to the plate surfaces of the upper substrate (34) and the lower substrate (35), one end surface of the two fixed metal plates (38) are inserted into the plurality of grooves (361) on one side, facing the other end surface of the second energy dissipation metal plates (35).
  5. 5. The prefabricated energy dissipation shear wall with high toughness according to claim 4, wherein the upper substrate (34) and the lower substrate (35) have the same length, the length of the stop block (36) is smaller than that of the upper substrate (34), the plurality of grooves (361) are uniformly distributed along the length direction of the stop block (36), the widths of the grooves (361) in the directions from the middle of the stop block (36) to the two sides of the stop block are sequentially reduced, and the thicknesses of the corresponding second energy dissipation metal plates (38) are sequentially reduced.
  6. 6. A prefabricated energy dissipating shear wall of high toughness according to claim 5, wherein a gap is provided between one end of the second energy dissipating metal plate (38) and the inner wall of the recess (361).
  7. 7. A prefabricated energy dissipating shear wall of high toughness according to claim 4, wherein said first energy dissipating metal plate (37) and said second energy dissipating metal plate (38) are both X-shaped plates.
  8. 8. The high-toughness prefabricated energy dissipation shear wall according to claim 4 is characterized in that the number of the screws (4) is multiple and the screws are embedded in the connecting steel plate (2), and bolt holes corresponding to the screws (4) one by one are formed in two ends of the plate surface of the upper substrate (34) or the plate surface of the lower substrate (35).
  9. 9. The high-toughness prefabricated energy dissipation shear wall according to claim 1, wherein the steel pipe column (1) comprises a square steel pipe and plain concrete poured in the cavity of the square steel pipe.
  10. 10. The method for constructing the high-toughness prefabricated energy dissipation shear wall according to any one of claims 1 to 9, comprising the following steps: s1, prefabricating a steel pipe column (1) and a damper (3) in a factory, welding a connecting steel plate (2) on the outer wall of the steel pipe column (1), and embedding a screw (4) at a preset position of the connecting steel plate (2); S2, on-site assembly, namely hoisting the steel pipe columns (1) in place, and simultaneously enabling the connecting steel plates (2) on the two adjacent steel pipe columns (1) to be arranged oppositely, wherein the damper (3) is horizontally arranged between the two adjacent steel pipe columns (1) through the connecting steel plates (2) and the screw rods (4); S3, pouring a connecting wallboard (5), namely supporting templates on the peripheries of two adjacent steel pipe columns (1) on which the dampers (3) are installed, and pouring light concrete foam concrete into the templates to form an integral connecting wallboard (5) for wrapping the dampers (3); And S4, curing and finishing, namely dismantling the templates after the wallboard (5) to be connected reaches the design strength, and finishing the field assembly and construction of the whole shear wall unit.

Description

High-toughness assembled prefabricated energy dissipation shear wall and construction method thereof Technical Field The invention relates to the technical field of building structures, in particular to a high-toughness assembled prefabricated energy dissipation shear wall and a construction method thereof. Background The shear wall is used as a key side force resisting component of a building structure, and the anti-seismic performance and the industrialized construction level of the shear wall are core problems in the engineering field. The traditional cast-in-situ reinforced concrete shear wall has the problems of low construction efficiency, limited ductility and energy consumption capacity, easy brittle failure under strong earthquake and difficult repair. Along with the development of building industrialization and seismic isolation technology, the development of a novel shear wall body which has high bearing capacity, high ductility, high energy consumption and easy assembly is an urgent need. The research at home and abroad mainly advances along two directions, namely, the self ductility of the component is improved, and an additional energy dissipation device is arranged. The steel pipe concrete composite structure is widely applied to improving the frame or the overall performance of the shear wall due to the excellent constraint effect and ductility. Meanwhile, the metal damper, in particular to a graded yielding damper or a reserved gap damper, can intensively dissipate the earthquake energy through controllable plastic deformation, protects a main body structure and becomes an effective means for energy dissipation and shock absorption design. The current research front edge is to combine the two to form an assembled energy dissipation shear wall system. For example, replaceable steel damping elements are arranged at joints of the prefabricated wall body, so that damage control is realized. However, the prior art still faces challenges in terms of damper connection reliability, exposure protection, joint filling material co-operation with the damper, etc. Therefore, how to provide an assembled prefabricated energy dissipation shear wall with good anti-seismic performance and high construction efficiency and a construction method thereof are problems to be solved by those skilled in the art. Disclosure of Invention In view of the above, the invention provides a high-toughness assembled prefabricated energy dissipation shear wall and a construction method thereof, wherein a steel pipe column is used for replacing a traditional wallboard structure, the connection between a damper and the steel pipe column is realized through a screw and a connecting steel plate, the easy assembly of the shear wall is realized, the shear wall can be longitudinally deformed under the action of an earthquake so as to generate certain displacement, and the damper connected between the steel pipe columns consumes energy brought by the earthquake at the moment, so that the damper can jointly resist the damage and the destruction under the action of the earthquake, and the earthquake resistance of the shear wall is comprehensively improved. In order to achieve the above purpose, the present invention adopts the following technical scheme: A high toughness fabricated prefabricated energy dissipating shear wall comprising: The steel pipe columns are arranged in a plurality, and the axes of the steel pipe columns are arranged in parallel; the connecting steel plates are welded and fixed on two opposite outer walls of two adjacent steel pipe columns; The number of the dampers is a plurality of the dampers, and the dampers are arranged in the assembly gap at intervals along the height direction of the steel pipe column; two ends of the dampers are respectively connected to the two connecting steel plates through screw threads; The connecting wallboard is formed by pouring light concrete or foam concrete, and the light concrete or the foam concrete is poured in the assembly gap and wraps the damper. The technical scheme of the invention has the beneficial effects that the traditional shear wall board structure is split into the plurality of steel pipe columns, the damper is connected between two adjacent steel pipe columns through the connecting steel plate and the screw rod, and the damper is wrapped by the connecting wall board to form the whole stable shear wall, the assembly type structure is adopted to facilitate the construction of the shear wall, and meanwhile, the damper is used for consuming earthquake energy to improve the earthquake resistance of the shear wall. Preferably, the damper is a graded yielding metal damper, the graded yielding metal damper comprises an inner ring plate, an outer ring plate and a backing plate, the inner ring plate and the outer ring plate comprise arc sections which are arranged up and down and straight line sections which are connected with the two arc sections, the inner ring plate is