CN111749352A - Energy-consuming connecting device for assembly type shear wall - Google Patents
Energy-consuming connecting device for assembly type shear wall Download PDFInfo
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- CN111749352A CN111749352A CN202010760818.9A CN202010760818A CN111749352A CN 111749352 A CN111749352 A CN 111749352A CN 202010760818 A CN202010760818 A CN 202010760818A CN 111749352 A CN111749352 A CN 111749352A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
- E04C5/162—Connectors or means for connecting parts for reinforcements
- E04C5/163—Connectors or means for connecting parts for reinforcements the reinforcements running in one single direction
- E04C5/165—Coaxial connection by means of sleeves
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
- E04C5/18—Spacers of metal or substantially of metal
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
Abstract
The invention discloses an energy consumption connecting device for an assembled shear wall, which comprises an energy consumption connecting system and a pre-stress system, wherein the energy consumption connecting system is symmetrically arranged at the bottom corners of two ends of a prefabricated wallboard; the upper end of the energy consumption connecting system is connected with the upper prefabricated wall plate, and the lower end of the energy consumption connecting system is connected with the lower prefabricated wall plate; the prestress system is arranged on the central axis of the prefabricated wall panel, and the upper prefabricated wall panel and the lower prefabricated wall panel are connected into a whole through the prestress system; according to the invention, the upper and lower prefabricated wallboards are connected into a whole through the energy-consuming connecting system and the prestress system, and swing deformation is generated under the action of earthquake; the prestress system is arranged on the central axis of the prefabricated wall board, and the wall body can be controlled to swing by utilizing prestress and the self weight of the wall body; the energy-consuming connecting system is arranged at the tension-compression corner with large stress on the wall body, and the energy-consuming connecting system is used for providing reliable energy-consuming connection, so that the brittle crushing damage of the concrete corner of the wall body is avoided, and the seismic grade range applicable to the structure is expanded.
Description
Technical Field
The invention belongs to the technical field of assembly type shear wall structure connection, and particularly relates to an energy-consuming connection device for an assembly type shear wall.
Background
With the great advance and development of the fabricated building, the fabricated shear wall structure is widely concerned about the superior lateral stiffness, but the early fabricated large plate structure has a plurality of problems in application, such as poor structure seismic performance, insufficient connection performance, serious component splicing damage and serious restriction on the development of the fabricated building; in order to solve the problems, scholars at home and abroad put forward various schemes around the connection technology, including the traditional wet connection modes such as shear key connection, mortar connection and the like and the dry connection methods such as bolt connection, welding connection, prestress connection and the like; the dry type connecting method avoids node rear formwork support, is simple and convenient to operate, and becomes a current research hotspot.
According to different connection energy consumption mechanisms, the connection energy consumption mechanisms can be divided into two types of strong connection and recoverable function connection; the strong connection is always in an elastic stage under the action of an earthquake, the restorable functional connection adopts a performance-based design method, and a weak connecting piece is artificially designed to protect a main body structure from being damaged or only slightly damaged under the action of the earthquake; the recoverable functional connection generally comprises two forms of prestress connection and energy consumption connection, prestress steel bars are generally arranged in the wall body member along the longitudinal direction in the prestress connection, the wall body is controlled to swing and deform by prestress and the self weight of the wall body, and good self-resetting capability is realized; however, in the swinging process, concrete at the corner of the wall body is subjected to hard collision, the problem of crushing and peeling is easy to occur, and the wall body test piece lacks an effective energy consumption mechanism and has poor energy consumption performance.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides an energy-consuming connecting device for an assembled shear wall, which aims to solve the technical problems that corners of the wall are easy to crush and peel off and the energy-consuming performance is poor in the wall prestressed connection in the prior art.
In order to achieve the purpose, the invention adopts the technical scheme that:
the invention provides an energy consumption connecting device for an assembled shear wall, which comprises an energy consumption connecting system and a pre-stress system, wherein the energy consumption connecting system is symmetrically arranged at the bottom corners of two ends of a prefabricated wallboard; the upper end of the energy consumption connecting system is connected with the upper prefabricated wall plate, and the lower end of the energy consumption connecting system is connected with the lower prefabricated wall plate; the prestress system penetrates through the central axis of the prefabricated wall panel, and the upper prefabricated wall panel and the lower prefabricated wall panel are connected into a whole through the prestress system.
Furthermore, the energy consumption connecting system comprises a strong connecting piece and an energy consumption connecting piece; the upper end of the strong connecting piece is connected with the upper prefabricated wallboard, and the lower end of the strong connecting piece is flush with the bottom end of the upper prefabricated wallboard; the energy-consuming connecting pieces are symmetrically arranged on two sides of the strong connecting piece, the upper ends of the energy-consuming connecting pieces are connected with the strong connecting piece, and the lower ends of the energy-consuming connecting pieces are connected with the lower-layer prefabricated wall board; the energy consumption connecting piece adopts a variable friction energy consumption connecting piece.
Further, the strong connecting piece comprises an upper top plate, a first end plate, a second end plate and a middle web plate; the upper top plate is horizontally fixed in the prefabricated wall plate, and the first end plate and the second end plate are vertically arranged at two ends below the upper top plate in parallel;
the first end plate is flush with the end part of the prefabricated wall plate, and the second end plate is fixedly arranged in the prefabricated wall plate; the middle web plate is arranged between the first end plate and the second end plate and is parallel to the prefabricated wall plate; the energy-consuming connecting pieces are symmetrically arranged on two sides of the middle web plate, the upper ends of the energy-consuming connecting pieces are fixedly connected with the upper top plate, and the lower ends of the energy-consuming connecting pieces are connected with the lower prefabricated wall plate.
Furthermore, the energy consumption connecting piece comprises two groups of variable friction plates, a fixing bolt and a disc spring; the two groups of variable friction plates are symmetrically arranged on two sides of the middle web plate, the upper ends of the variable friction plates are fixedly connected with the upper top plate, and the lower ends of the variable friction plates are fixedly connected with the lower prefabricated wall plate; the fixing bolt horizontally penetrates through the middle web plate, and the two groups of variable friction plates are respectively fixed at two ends of the fixing bolt; a disc spring is arranged between the variable friction plate and the end part of the fixing bolt, and the disc spring is sleeved on the fixing bolt.
Furthermore, each variable friction plate group comprises an L-shaped outer friction plate and an L-shaped inner friction plate; the L-shaped outer friction plate, the L-shaped inner friction plate and the middle web plate are arranged in parallel, the L-shaped inner friction plate is arranged between the L-shaped outer friction plate and the middle web plate, the upper end of the L-shaped outer friction plate is fixedly connected with the upper top plate, and the lower end of the L-shaped inner friction plate is fixedly connected with the lower prefabricated wall plate;
the vertical surface of the L-shaped outer friction plate is provided with a variable friction groove, the vertical surface of the L-shaped inner friction plate is provided with a variable friction bulge, and the variable friction groove of the L-shaped outer friction plate is tightly matched with the variable friction bulge of the L-shaped inner friction plate; a bolt rod fixing hole is formed in the center of the vertical surface of the L-shaped outer friction plate, a bolt rod shifting groove hole is formed in the vertical surface of the L-shaped inner friction plate, a long shaft of the bolt rod shifting groove hole is vertically arranged, and a fixing bolt penetrates through the bolt rod shifting groove hole and the bolt rod fixing hole.
Furthermore, an internal friction brass plate is arranged between the variable friction plate and the middle web plate, one side of the internal friction brass plate is tightly attached to the variable friction plate, and the other side of the internal friction brass plate is tightly attached to the middle web plate.
Furthermore, upper anchoring steel bars are arranged in the upper-layer prefabricated wall board, and lower anchoring steel bars are arranged in the lower-layer prefabricated wall board;
an upper threaded sleeve is arranged above the upper top plate, the lower end of the upper threaded sleeve is fixedly connected with the upper top plate, and the lower end of the upper anchoring steel bar is fixedly arranged in the upper threaded sleeve in a penetrating manner;
the lower end of the energy-consuming connecting piece is provided with a lower threaded sleeve, the upper end of the lower threaded sleeve is fixedly connected with the energy-consuming connecting piece, and the upper end of the lower anchoring reinforcing steel bar is fixedly arranged in the lower threaded sleeve in a penetrating mode.
Further, the first end plate comprises two vertical plates which are vertically arranged in parallel and are perpendicular to the prefabricated wall plate; a plurality of reinforcing rib plates are horizontally arranged between the two vertical plates.
Furthermore, the energy-consuming connecting system also comprises a guard plate structure, and the guard plate structure is fixedly arranged between the strong connecting piece and the prefabricated wall plate; the guard plate structure comprises a guard plate outer side plate, a guard plate end plate, a guard plate inner side plate and a connecting stud;
the guard plate outer side plate and the guard plate inner side plate are vertically arranged in parallel, the guard plate outer side plate is flush with the outer surface of the prefabricated wall plate, and the guard plate inner side plate is flush with the inner surface of the prefabricated wall plate; the guard plate outer side plate or the guard plate inner side plate is an L-shaped plate, one end of the L-shaped plate is fixedly connected with the upper top plate, and the other end of the L-shaped plate is fixedly connected with the second end plate;
the guard plate end plate is arranged between the guard plate outer side plate and the guard plate inner side plate and is flush with the end part of the prefabricated wall plate; distributed longitudinal ribs in the prefabricated wall body extend into the guard plate structure and are fixed with the guard plate outer side plate or the guard plate inner side plate;
the connecting stud is horizontally arranged in the prefabricated wall board in a penetrating mode, one end of the connecting stud is fixedly connected with the outer side plate of the protection plate, and the other end of the connecting stud is fixedly connected with the inner side plate of the protection plate.
Further, still include shear-resistant stud, shear-resistant stud symmetry sets up in prestressing force system's both sides, and shear-resistant stud's upper end is connected with upper prefabricated wallboard, and the lower extreme is connected with lower floor's prefabricated wallboard.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides an energy-consuming connecting device for an assembled shear wall, which is characterized in that an upper prefabricated wallboard and a lower prefabricated wallboard are connected into a whole through an energy-consuming connecting system and a pre-stressing system, and swing deformation is generated under the action of an earthquake; the prestress system is arranged on the central axis of the prefabricated wall board, the wall body can be controlled to swing by utilizing prestress and the self weight of the wall body, and the self-resetting capability is good; the energy-consuming connecting system is arranged at the corner of the wall body under large stress, the energy-consuming connecting system is utilized to provide reliable energy-consuming capacity and absorb a large amount of capacity, the stress of the wall board is reliably transmitted, the concrete at the corner of the wall body is prevented from being crushed and damaged, the seismic grade range applicable to the structure is enlarged, the main structure is protected from being damaged, and the excellent structural performance is realized.
Furthermore, the energy-consuming connecting piece and the prefabricated wall board are connected through the strong connecting piece by arranging the strong connecting piece and the energy-consuming connecting key in the energy-consuming connecting system; the strong connecting piece provides main lateral rigidity resistance, ensures the synergistic effect of all parts of the energy consumption connecting system, respectively plays an advantage function, and realizes the organic combination of lateral force resistance, energy consumption capacity and a force transmission system of the energy consumption connecting system; the energy consumption connecting piece with variable friction energy consumption is adopted, so that the energy under the earthquake action can be effectively consumed, the residual deformation of the assembled shear wall structure under the earthquake action is eliminated or reduced, and the obvious plastic deformation of main stressed components such as an assembled wallboard is avoided; the energy-consuming connecting device is embedded inside the prefabricated wallboard, the arrangement of the wallboard is not influenced, and the efficiency of friction energy consumption is maximized.
Furthermore, the strong connecting piece adopts a structural form of combining a top plate, an end plate and a web plate, so that greater lateral rigidity is provided, the lateral shearing force of the prestressed system can be effectively shared, and the prestressed system is prevented from shearing damage; the web plate provides the integral in-plane anti-lateral rigidity of the energy-consuming connecting piece, so that the strong connecting piece is always in an elastic stage under the action of an earthquake, and repeated utilization is realized.
Furthermore, two groups of variable friction plates are symmetrically arranged on two sides of a web plate of the strong connecting piece in the energy consumption connecting piece, so that the integral stress of the energy consumption connecting piece is balanced; the two groups of variable friction plates are respectively connected with the upper top plate and the lower prefabricated wall plate, so that the reliable connection of the energy consumption connecting system and the upper and lower prefabricated wall plates is ensured; the two groups of friction-changing plates are connected together through the fixing bolts, so that the stability of the energy consumption process of the friction-changing plates is ensured.
Furthermore, the variable friction plate is formed by combining the L-shaped outer friction plate and the L-shaped inner friction plate, and the bolt rod shifting groove hole is formed in the L-shaped inner friction plate, so that the L-shaped inner friction plate can slide relative to the L-shaped outer friction plate under the action of stress; in the sliding process of the L-shaped inner friction plate relative to the L-shaped outer friction plate, the friction-changing protrusions on the L-shaped inner friction plate are in close contact with the friction-changing grooves on the L-shaped outer friction plate, so that the superposition displacement of the L-shaped inner friction plate and the L-shaped outer friction plate is increased, and the energy-consuming capacity of the external disc spring along with the change of the displacement is extruded; when the stress is reduced, the displacement is reduced, the disc spring is restored to deform, and the energy consumption capacity is reduced; therefore, the organic combination of structural stress and energy consumption is realized, the energy consumption capability is automatically adjusted along with the structural stress, and the energy consumption capability is better.
Furthermore, an internal friction brass plate is arranged between the variable friction plate and the middle web plate, and the internal friction brass plate provides a larger friction coefficient, so that the energy-consuming connecting piece is ensured to have reliable energy-consuming capacity; the arrangement of the internal friction brass plate improves the static friction force of the energy consumption connecting piece, ensures that the structure cannot start a variable friction mechanism under the action of small earthquake, and can realize effective energy consumption of the structure under the action of small earthquake. When the L-shaped friction plate is relatively displaced, the internal friction brass plate can also consume part of energy, so that relatively large total energy consumption is provided by matching with the variable friction spring.
Furthermore, the through long threads are arranged inside the upper and lower threaded sleeves, one end of each through long thread is used for being connected with a top bolt or a bottom bolt of the energy-consuming connecting piece, the other end of each through long thread is used for being connected with an upper embedded anchor bar and a lower embedded anchor bar inside the prefabricated wall, the energy-consuming connecting piece is reliably connected with the prefabricated wall, and the high-efficiency performance of a force transmission mechanism, an energy consumption mechanism and a lateral force resisting mechanism of the connecting piece is guaranteed.
Furthermore, the reinforcing rib plate is arranged in the first end plate, so that larger out-of-plane rigidity is provided, the overall rigidity of the energy consumption connecting piece system is increased, the relation among all parts of the energy consumption connecting system is enhanced, and the overall working performance of the connecting system is ensured; the energy-consuming connecting piece can provide friction energy-consuming capacity changing along with stress, and the adaptability and the strain capacity of the structural system under the action of an earthquake are enhanced.
Furthermore, a guard plate structure in the energy-consuming connecting system is positioned at the boundary position where the strong connecting piece is connected with the prefabricated wall body, a groove-shaped corner protector is formed by combining two side plates and end plates and is welded with the strong connecting piece to form a whole body for reliably connecting the energy-consuming connecting system with the prefabricated wall body, and meanwhile, the situation that the joint of the prefabricated wall board and the strong connecting piece is crushed and damaged due to rigidity mutation is avoided; a through long connecting stud is arranged in the guard plate structure, so that the guard plate structure and the upper prefabricated wall body are connected into a whole; longitudinal distribution reinforcing bar among the prefabricated wallboard stretches into backplate structure and inside buckling to backplate structure to with the reinforcing bar along backplate curb plate welding, guarantee the reliable transmission of wallboard stress.
Furthermore, the shear-resistant studs are symmetrically arranged on two sides of the prestressed system, the shear-resistant studs effectively share the shear force at the bottom of the wall body, the connection failure caused by shear failure of the prestressed system is avoided, and the reliability of the structure is improved.
Drawings
FIG. 1 is a front view of an energy dissipating coupling device for fabricated shear walls according to the present invention;
FIG. 2 is a side view of an energy dissipating coupling device for fabricated shear walls according to the present invention;
FIG. 3 is a top view of an energy dissipating coupling arrangement for fabricated shear walls according to the present invention;
FIG. 4 is a schematic diagram of an outer friction plate structure used in an energy dissipating connection device of an assembled shear wall according to the present invention;
FIG. 5 is a schematic structural view of an internal friction plate used in an energy dissipating connecting device of a fabricated shear wall according to the present invention;
FIG. 6 is a schematic view of an assembly structure between the energy-dissipating connecting device and an assembled shear wall according to the present invention;
fig. 7 is a schematic view of the continuous arrangement of the energy-consuming connecting device in the fabricated shear wall according to the present invention.
The energy-consuming connection system comprises an energy-consuming connection system 1, a prestress system 2, shear-resistant studs 3, an upper prefabricated wallboard 4 and a lower prefabricated wallboard 5; the energy-consuming energy-saving; 111 upper top plate, 112 first end plate, 113 second end plate, 114 middle web plate, 115 reinforced rib plate; a 121L-shaped outer friction plate, a 122L-shaped inner friction plate, a 123 inner friction brass plate, 124 fixing bolts, 125 disc springs and 126 fixing nuts; 131 guard plate outer side plates, 132 guard plate end plates, 133 guard plate inner side plates and 134 connecting studs; 21 anchoring means, 22 tendons; 41, anchoring reinforcing steel bars, and 42 distributing longitudinal bars; anchoring bars are under 51.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects of the present invention more apparent, the following embodiments further describe the present invention in detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1-7, the invention provides an energy-consuming connection device for an assembled shear wall, which comprises an energy-consuming connection system 1, a pre-stress system 2 and shear-resistant studs 3; the energy-consuming connecting systems 1 are symmetrically arranged at the bottom corners of two ends of the prefabricated wall board, the upper ends of the energy-consuming connecting systems 1 are connected with the upper prefabricated wall board 4, and the lower ends of the energy-consuming connecting systems 1 are connected with the lower prefabricated wall board 5; the prestress system 2 is arranged on a central axis of the prefabricated wall panel, the prestress system 2 penetrates through the upper prefabricated wall panel 4 and the lower prefabricated wall panel 5, and the upper prefabricated wall panel 4 and the lower prefabricated wall panel 5 are connected into a whole through the prestress system 2; shear-resistant studs 3 are symmetrically arranged on two sides of the prestress system 2, the upper ends of the shear-resistant studs 3 are connected with the upper-layer prefabricated wall panel 4, and the lower ends of the shear-resistant studs 3 are connected with the lower-layer prefabricated wall panel 5; according to the invention, the upper and lower prefabricated wallboards are connected into a whole through the energy-consuming connecting system and the prestress system, and swing deformation is generated under the action of earthquake in a synergistic manner; the prestress system is arranged on the central axis of the prefabricated wall board, the wall body can be controlled to swing by utilizing prestress and the self weight of the wall body, and the self-resetting capability is good; the energy-consuming connecting system is arranged at the tension-compression corner with larger stress on the wall body, the energy-consuming connecting system is utilized to provide reliable energy-consuming capacity, absorb a large amount of capacity, realize reliable transmission of wallboard stress, avoid brittle crushing damage of concrete at the corner of the wall body, expand the seismic grade range applicable to the structure, protect the main structure from being damaged and have excellent structural performance; the shear-resistant studs are symmetrically arranged on the two sides of the prestressed system, so that shear force at the bottom of the wall body is effectively shared by the shear-resistant studs, connection failure caused by shear failure of the prestressed system is avoided, and the reliability of the structure is improved.
The energy consumption connecting system 1 comprises a strong connecting piece 11, an energy consumption connecting piece 12 and a protective plate structure 13, wherein the upper end of the strong connecting piece 11 is connected with the upper prefabricated wall plate 4, and the lower end of the strong connecting piece is flush with the bottom end of the upper prefabricated wall plate 4; the energy consumption connecting pieces 12 are symmetrically arranged on two sides of the strong connecting piece 11, and the energy consumption connecting keys 12 are symmetrically arranged along the thickness direction of the prefabricated wall plate; the upper end of the energy consumption connecting piece 12 is connected with the strong connecting piece 11, the lower end of the energy consumption connecting piece is connected with the lower-layer prefabricated wall board 5, the energy consumption connecting piece 12 is a friction-variable energy consumption connecting piece, energy under the action of an earthquake can be consumed through the friction-variable energy consumption connecting piece, residual deformation of the assembled shear wall structure under the earthquake is eliminated or reduced, and obvious plastic deformation of main stress components such as prefabricated wall boards is avoided.
The strong connecting piece 11 comprises an upper top plate 111, a first end plate 112, a second end plate 113, a middle web plate 114 and a reinforcing rib plate 115, wherein the upper top plate 111 is horizontally fixed in the prefabricated wall plate, an upper threaded sleeve 14 is arranged above the upper top plate 111, and the lower end of the upper threaded sleeve 14 is welded and fixed with the upper top plate 111; an upper anchoring steel bar 41 is arranged in the upper prefabricated wall plate 4, the upper anchoring steel bar 41 is longitudinally arranged in the upper prefabricated wall plate 4, the lower end of the upper anchoring steel bar 41 penetrates through the upper threaded sleeve 14, and the upper anchoring steel bar 41 is in threaded connection with the upper threaded sleeve 14; the first end plate 112 and the second end plate 113 are vertically arranged at two ends below the upper top plate 111, the first end plate 112 is flush with the end part of the prefabricated wall plate, the second end plate 113 is fixedly arranged in the prefabricated wall plate, and the first end plate 112 and the second end plate 113 are arranged in parallel at intervals; an intermediate web 114 is arranged between the first end plate 112 and the second end plate 113, the intermediate web 114 being parallel to the prefabricated wall panel; preferably, the first end plate 112 comprises two vertical plates parallel to each other, the vertical plates being perpendicular to the prefabricated wall panel; a plurality of reinforcing rib plates 115 are horizontally arranged between the two vertical plates, one end of each reinforcing rib plate 115 is vertically welded and fixed with one vertical plate, and the other end of each reinforcing rib plate 115 is vertically welded and fixed with the other vertical plate.
The energy consumption connecting pieces 12 are symmetrically arranged on two sides of the middle web plate 114, the upper ends of the energy consumption connecting pieces 12 are fixedly connected with the upper top plate 111, and the lower ends of the energy consumption connecting pieces 12 are connected with the lower prefabricated wall plate 5.
The energy consumption connecting piece 12 comprises two groups of friction-changing plates, an internal friction brass plate 123, a fixing bolt 124, a disc spring 125 and a fixing nut 126; the two groups of variable friction plates are symmetrically arranged on two sides of the middle web plate 114, the upper ends of the variable friction plates are fixedly connected with the upper top plate 111, and the lower ends of the variable friction plates are fixedly connected with the lower prefabricated wall plate 5; the fixing bolt 124 horizontally penetrates through the middle web plate 114, a fixing bolt hole is formed in the middle web plate 114, and the fixing bolt 124 penetrates through the fixing bolt hole; the two groups of variable friction plates are respectively and fixedly arranged at two ends of a fixing bolt 124, and a fixing nut 126 is arranged at the end part of the fixing bolt 124; a disc spring 125 is arranged between the variable friction plate and the fixing nut 126, and the disc spring 125 is sleeved on the fixing bolt 124; an inner friction brass plate 123 is arranged between the variable friction plate and the middle web plate 114, one side of the inner friction brass plate 123 is tightly attached to the variable friction plate, and the other side is tightly attached to the middle web plate 114.
Each set of variable friction plates comprises an L-shaped outer friction plate 121 and an L-shaped inner friction plate 122, and the L-shaped outer friction plate 121, the L-shaped inner friction plate 122 and the middle web 114 are arranged in parallel; the upper end of the L-shaped outer friction plate 121 is fixedly connected with the upper top plate 111, and the lower end of the L-shaped inner friction plate 122 is fixedly connected with the lower prefabricated wall plate 5; the L-shaped inner friction plate 122 is disposed between the L-shaped outer friction plate 121 and the inner friction brass plate 123, one side of the L-shaped inner friction plate 122 is in close contact with the L-shaped outer friction plate 121, and the other side is in close contact with the inner friction brass plate 123; the vertical surface of the L-shaped outer friction plate 121 is provided with a variable friction groove, the vertical surface of the L-shaped inner friction plate 122 is provided with a variable friction protrusion, and the variable friction groove of the L-shaped outer friction plate 121 is tightly matched with the variable friction protrusion of the L-shaped inner friction plate 122.
The L-shaped outer friction plate 121 comprises an outer friction plate horizontal section and an outer friction plate vertical section, the outer friction plate horizontal section is fixedly arranged below the upper top plate 111, and the outer friction plate horizontal section is fixedly connected with the upper top plate 111 through a top bolt 16; a top bolt through hole is formed in the horizontal section of the outer friction plate, a through hole is formed in the upper top plate 111, the through hole in the upper top plate 111 corresponds to the upper threaded sleeve 14 in position, the upper end of a top bolt 16 sequentially penetrates through the top bolt through hole and the through hole and then extends into and is fixed in the upper threaded sleeve 14, and the horizontal section of the outer friction plate, the upper top plate 111 and the threaded sleeve 14 are fixedly connected together through the top bolt 16; the vertical section of the outer friction plate is vertically arranged below the end part of the horizontal section of the outer friction plate, the vertical section of the outer friction plate is fixedly arranged on a fixing bolt 124, a bolt rod fixing hole is formed in the vertical section of the outer friction plate, and the fixing bolt 124 penetrates through the bolt rod fixing hole; preferably, a first washer 18 is disposed between the top bolt 16 and the upper top plate 111.
The L-shaped inner friction plate 122 comprises an inner friction plate horizontal section and an inner friction plate vertical section, the inner friction plate horizontal section is flush with the bottom end of the prefabricated wall plate, and the inner friction plate horizontal section is fixedly connected with the lower prefabricated wall plate 5; the lower-layer prefabricated wall plate 5 is internally provided with lower anchoring steel bars 51, the lower anchoring steel bars 51 are longitudinally arranged in the lower-layer prefabricated wall plate 5, the upper ends of the lower anchoring steel bars 51 are fixedly connected with the horizontal section of the inner friction plate, a lower threaded sleeve 15 is arranged below the horizontal section of the inner friction plate, and the upper ends of the lower threaded sleeve 15 are welded and fixed with the horizontal section of the inner friction plate; the upper end of the lower anchoring steel bar 51 penetrates through the lower threaded sleeve 15, and the lower anchoring steel bar 51 is in threaded connection with the lower threaded sleeve 15; a bottom bolt through hole is formed in the horizontal section of the inner friction plate, the position of the bottom bolt through hole corresponds to the position of the lower threaded sleeve 15, the horizontal section of the inner friction plate is fixedly connected with the lower threaded sleeve 15 through a bottom bolt 17, and the lower end of the bottom bolt 17 penetrates through the bottom through hole and then extends into the lower threaded sleeve 15 and is fixed in the lower threaded sleeve 15; preferably, a second gasket 19 is arranged between the bottom bolt 17 and the horizontal section of the inner friction plate; preferably, the thickness of the first gasket 18 is smaller than the thickness of the second gasket 19; the vertical section of the inner friction plate is vertically arranged above the end part of the horizontal section of the inner friction plate, the vertical section of the inner friction plate is arranged on the fixing bolt 124, the vertical section of the inner friction plate is provided with a bolt rod shifting slotted hole, the fixing bolt 124 penetrates through the bolt rod shifting slotted hole, the long axis of the bolt rod shifting slotted hole is vertically arranged, and the vertical movement of the L-shaped inner friction plate relative to the L-shaped outer friction plate is ensured by arranging the bolt rod shifting slotted hole; preferably, the bolt-displacing slot hole is a rounded rectangular hole, and the fixing bolt 124 can move up and down in the rounded rectangular hole.
The outer friction plate vertical section, the inner friction brass plate 123 and the middle web plate 114 are arranged in parallel, the inner friction vertical section is arranged between the outer friction vertical section and the inner friction brass plate 123, the surface of the outer friction plate vertical section is provided with a friction groove, the surface of the inner friction plate vertical section is provided with a friction bulge, and the friction groove of the outer friction plate vertical section is tightly matched with the friction bulge of the inner friction plate vertical section; preferably, the friction groove or the friction protrusion comprises two slope sections and a straight section, and the two slope sections are symmetrically arranged at the upper end and the lower end of the straight section.
The guard plate structure 13 is fixedly arranged on the outer side of the strong connecting piece 11 and is arranged between the strong connecting piece 11 and the prefabricated wall board; the guard structure 13 includes a guard outer plate 131, a guard end plate 132, a guard inner plate 133, and a connecting peg 134; the guard plate outer side plate 131 and the guard plate inner side plate 133 are vertically arranged in parallel, the guard plate outer side plate 131 is flush with the outer surface of the prefabricated wall plate, and the guard plate inner side plate 133 is flush with the inner surface of the prefabricated wall plate; the guard plate outer side plate 131 or the guard plate inner side plate 133 is an L-shaped plate, one end of the L-shaped plate is fixedly connected with the end part of the upper surface of the upper top plate 111, and the other end of the L-shaped plate is fixedly connected with the end part of the second end plate 113; the guard plate end plate 132 is arranged between the guard plate outer side plate 131 and the guard plate inner side plate 133, and the guard plate end plate 132 is flush with the end part of the prefabricated wall plate; distributed longitudinal ribs 42 in the prefabricated wall body extend into the guard plate structure 13 and are fixed with the guard plate outer side plate 131 or the guard plate inner side plate 133; the connecting peg 134 horizontally penetrates through the prefabricated wall board, one end of the connecting peg 134 is fixedly connected with the guard plate outer side plate 131, and the other end of the connecting peg 134 is fixedly connected with the guard plate inner side plate 133.
The prestressed system 2 comprises two anchoring devices 21 and prestressed tendons 22, wherein the two anchoring devices 21 are respectively arranged at the upper end and the lower end of the prestressed tendons 22, and the prestressed tendons 22 are longitudinally arranged on the central axis of the prefabricated wall panel.
Assembly process and working principle
The invention relates to an energy-consuming connecting device for an assembled shear wall, which comprises the following steps in the assembling process:
Arranging steel bars of the prefabricated wall board according to structural design requirements, and binding a steel bar framework; end threads are arranged at the end parts of the upper anchoring steel bar and the lower anchoring steel bar and are respectively matched with the internal threads of the upper threaded sleeve and the lower threaded sleeve, and the end threads are formed at one time; manufacturing an upper threaded sleeve, a lower threaded sleeve, a top bolt and a bottom bolt, wherein the threads of the threaded sleeve are matched with those of the bolt; processing and manufacturing a gasket, wherein the thickness of the first gasket is smaller than that of the second gasket, and bolt holes are arranged on the upper top plate, the horizontal section of the outer friction plate and the horizontal section of the inner friction plate; preparing a disc spring and a fixing bolt for connection and standby; manufacturing a strong connecting piece, wherein the strong connecting piece comprises an upper top plate, a first end plate, a second end plate, a middle web plate and a reinforcing rib plate; manufacturing a guard plate structure, wherein the guard plate structure comprises a guard plate outer side plate, a guard plate end plate, a guard plate inner side plate and a connecting stud; and manufacturing the prestressed tendons and the anchoring devices.
Step 2, assembling of steel bar and energy consumption connecting system
Firstly, welding and assembling a strong connecting piece, an energy-consuming connecting piece and a guard plate structure, wherein the welding connection of each part of the strong connecting piece, the welding connection of each part of the guard plate structure and the welding of an anchoring stud in the middle of the guard plate structure are carried out; then the whole guard plate structure is welded with the strong connecting piece; then, the L-shaped outer friction plate, the L-shaped inner friction plate, the inner friction brass plate, the middle web plate and the disc springs on the two sides are screwed and connected by using the fixing bolts; connecting the horizontal section of the outer friction plate, the upper top plate and the upper threaded sleeve by using a top bolt, and finishing the assembly of the energy-consuming connecting system; then, connecting the energy consumption connecting system with the steel bars; firstly, connecting an upper anchoring steel bar to a corresponding threaded sleeve; secondly, the distributed longitudinal bars which need to be welded to the guard plate structure in the steel bar framework are positioned and processed and are welded to the design position of the guard plate structure.
For the upper prefabricated wall panel, firstly assembling a special steel template, binding a steel bar framework, then positioning the energy-consuming connecting system to the design position of the corner part of the wall, and after the distribution of longitudinal bars and the anchoring of the steel bars are correspondingly fixed in the step 2, adding a reinforcement stirrup in a steel bar anchoring area for local reinforcement; placing a concrete protective layer cushion block, and placing the steel reinforcement framework into a corresponding position; after the detection is correct, the fine stone concrete is poured while vibrating, the energy consumption connecting system automatically forms a template to isolate the flowing of the surrounding concrete, and no concrete is poured into the energy consumption connecting system; then, driving and leveling the dough, and carrying out standard maintenance; when the strength of the concrete meets the requirement, the template is removed, and the upper prefabricated wallboard is formed; the manufacturing of the lower prefabricated wall board is approximately the same as that of the upper prefabricated wall board, and the difference is that the steel bar framework can be directly manufactured and put into a set position, and only the lower anchoring steel bars need to be firmly bound with the steel bar framework; when the strength of the wallboard concrete reaches 75% of the design value, the hoisting connection can be carried out.
Arranging a temporary support, and when connecting the upper prefabricated wall body and the lower prefabricated wall body, enabling lower anchoring steel bars of the lower prefabricated wall plate to penetrate through the lower threaded sleeve and be screwed and connected; and the bottom base plate, the horizontal section of the inner friction plate and the lower threaded sleeve are connected into a whole by adopting a bottom bolt, the hole diameters and the circle centers of the bolts of the horizontal section of the lower threaded sleeve, the base plate and the inner friction plate are ensured to be coincident, and the bottom bolt is screwed and fixed by spot welding.
And 5, penetrating a prestressed tendon into a reserved hole channel of the prefabricated wallboard for tensioning, anchoring the tensioned prestressed tendon at the end part of the member by using an anchoring device, and transmitting the pretensioning force of the prestressed tendon to the concrete by virtue of the anchoring device at the end part of the member to generate the prestress.
According to the variable friction energy consumption mechanism of the energy consumption connecting device for the assembled shear wall, when the stress of the structure is gradually increased from small to small, and when the stress of the energy consumption connecting device is smaller than the static friction force of the energy consumption connecting piece, the energy consumption connecting piece consumes energy by means of static friction, and the energy consumption capacity is fixed; when the tension force of the energy-consuming connecting device exceeds the static friction force of the energy-consuming connecting piece, the other components except the L-shaped inner friction plate move upwards in a cooperative manner under the action of the fixing bolt, and the inner friction brass plate and the L-shaped inner friction plate generate sliding friction to realize partial energy consumption; the L-shaped inner friction plate and the L-shaped outer friction plate generate sliding friction, and the friction protrusion of the L-shaped inner friction plate is tightly contacted with the friction groove of the L-shaped outer friction plate, so that the superposition displacement of the L-shaped inner friction plate and the L-shaped outer friction plate is increased, and the outer disc spring is extruded to generate energy consumption capacity changing along with the displacement; when the stress is reduced, the displacement is reduced, the disc spring is restored to deform, and the energy consumption capacity is reduced; therefore, the organic combination of structural stress and energy consumption is realized, and the energy consumption capability is ensured to realize automatic adjustment along with the structural stress.
The energy-consuming connecting device for the assembled shear wall is suitable for recoverable functional connection of a horizontal joint of a prefabricated assembled concrete shear wall plate structure; the prefabricated wall boards on the upper layer and the lower layer are connected into a whole through the energy consumption connecting system and the prestress system, and swing deformation is generated under the action of an earthquake. The energy-consuming connecting device comprises an energy-consuming connecting system and a pre-stressing system, wherein the pre-stressing system is located on the central axis of the prefabricated wall board, pre-stressing tendons are longitudinally arranged, anchoring devices are arranged at the top and the bottom of the assembled shear wall structure to fix the pre-stressing tendons, the pre-stressing system is arranged on the central axis of the prefabricated wall board, the wall body can be controlled to swing by means of pre-stressing and the self weight of the wall body, and the self-resetting capability is good.
The energy-consuming connecting system is positioned at a tension-compression corner part with a large stress on a wall body and comprises a strong connecting piece, an energy-consuming connecting piece and a protective plate structure, wherein an internal thread sleeve is arranged at the upper part of the strong connecting piece and connected with an anchoring steel bar of an upper prefabricated wall plate, the anchoring steel bar is pre-embedded in the wall body, and a thread matched with the internal thread sleeve is arranged at the end part of the anchoring steel bar and is screwed and fixed; similarly, the lower part of the energy-consuming connecting piece is provided with an internal thread sleeve and an anchoring steel bar with threads at the middle end of the lower prefabricated wall plate; meanwhile, the distributed reinforcing steel bars of the upper-layer prefabricated wall panel extend into the guard plate structure and are fixed with the guard plate structure through welding, so that the stressed reinforcing steel bars of the upper-layer wall body are firmly connected with the energy consumption connecting system, and the stress of the wall panel is reliably transmitted; the shear-resistant studs are arranged on the inner sides of the wallboard connecting pieces to share the shear force of the bottom of the wall body, so that the prestressed reinforcing steel is prevented from shearing and breaking to cause connection failure.
The guard plate structure in the energy-consuming connecting system is located at the boundary position where the strong connecting piece is connected with the prefabricated wall body, a groove-shaped corner protector is formed by combining two side plates and end plates, and is welded with the strong connecting piece to form a whole body for reliably connecting the energy-consuming connecting system with the prefabricated wall body and protecting the joint of the prefabricated wall plate and the strong connecting piece from crushing damage due to rigidity mutation; the upper parts and the inner sides of the guard plate outer side plate and the guard plate inner side plate extend out of the connecting pieces by 100mm, and the corners are arc-shaped, so that stress concentration is avoided while the protection area is increased as much as possible; common shear-resistant studs are arranged in the guard plate structure to ensure that the guard plate structure is connected with the upper prefabricated wall body into a whole; longitudinal distribution reinforcing bar among the prefabricated wallboard stretches into backplate structure and inside buckling to backplate structure to with the reinforcing bar along backplate curb plate welding, guarantee the reliable transmission of wallboard stress.
The strong connecting piece comprises an upper top plate, two end plates and a middle web plate, wherein the plates are made of steel and are welded to form an integral strong connecting box, so that main lateral stiffness is provided; and a fixing bolt hole is formed in the middle of the middle web plate and used for installing a fixing bolt in the variable friction connecting piece, so that the effective operation of a variable friction mechanism of the variable friction connecting key is ensured. Holes are formed in the two sides of the upper top plate, which are symmetrical relative to the middle web plate, penetrate through top bolts of the energy-consuming connecting pieces, and the upper parts of the upper top plate are connected with sleeves in an auxiliary mode, so that the anchoring connection of the energy-consuming connecting pieces and the prefabricated wall plate is realized; the strong connecting piece is simultaneously the core of the connecting system, the periphery is connected with the guard plate structure through welding, the top is connected with the energy-consuming connecting piece and the upper anchoring steel bar through the threaded sleeve, the synergistic effect of all parts of the connecting system is guaranteed, the advantages and the functions are respectively played, and the organic combination of the side force resistance, the energy-consuming capacity and the force transmission system of the connecting system is realized.
The energy-consuming connecting piece adopts a variable friction energy-consuming connecting piece and comprises two L-shaped outer friction plates, two L-shaped inner friction plates, two inner friction brass plates and a disc spring bolt connecting piece; a matched bolt hole is arranged at the corresponding position of the outer friction plate and the upper top plate, and a top bolt and a first gasket are adopted to fixedly connect the horizontal section of the outer friction plate and the upper top plate; the L-shaped outer friction plate is provided with a friction groove, and the friction groove comprises an inwards concave slope section, a straight section and a slope section and is used for forming a variable friction mechanism; two bolt rod fixing holes are formed in the middle of the vertical section of the inner friction plate and used for fixing bolts to penetrate through; the horizontal section of the inner friction plate is provided with a bolt hole which is matched with a bottom bolt and a second base plate to be connected with the lower inner thread sleeve; the middle part of the vertical section of the inner friction plate is provided with a round-corner rectangular hole which is used for removing the integral upward movement of the connecting piece system of the vertical section of the inner friction plate so as to realize a variable friction mechanism; the vertical section of the inner friction plate is also provided with a convex slope section, a flat section and a slope section which have the same size as the L-shaped outer friction plate to form a friction bulge, and the two friction bulges are mutually meshed.
The inner friction brass plates are arranged on two sides of the middle web plate, bolt holes are also formed in the corresponding positions in the middle of the inner friction brass plates for connecting the fixing screws, the inner friction brass plates provide a large friction coefficient, and the energy-consuming connecting piece is guaranteed to have reliable energy-consuming capacity; the disc spring is positioned on the outer side of the vertical section of the outer friction plate, compression and tensile deformation can be realized, the integral energy consumption capacity of the energy consumption connecting piece is changed along with the displacement change of the disc spring, and a variable friction energy consumption mechanism is realized. The fixing bolt is matched with a fixing nut to realize the fastening connection of the vertical section of the external friction plate, the vertical section of the internal friction plate, the internal friction connection brass plate and the middle web plate; the variable friction effect is realized by changing the outlines of the inner L-shaped friction plate and the outer L-shaped friction plate, and the friction force and the energy consumption capability are changed along with the stress of the structure, so that the flexibility of the structure in the earthquake is increased, the actual stress requirement is met, and the variable friction structure is simple, feasible, stable in performance and strong in controllability.
The upper and lower threaded sleeves are internally provided with through long threads, one end of each through long thread is used for being connected with a top bolt or a bottom bolt of the energy-consuming connecting piece, the other end of each through long thread is used for being connected with upper and lower embedded anchor bars inside the prefabricated wall, the reliable connection of the energy-consuming connecting piece and the prefabricated wall is guaranteed, and the efficient exertion of a force transmission mechanism, an energy-consuming mechanism and a lateral force resisting mechanism of the connecting piece is further guaranteed.
The energy-consuming connecting device integrally adopts modes of welding connection, bolt connection, prestress connection and the like, does not need post-pouring abutted seam templates, can be formed by assembling all components on a construction site, is convenient to construct, is green and pollution-free, can change the damage of the friction-variable energy-consuming connecting key, and ensures that the main structure is not damaged.
According to the energy consumption connecting device for the assembled shear wall, the prestress connection and the energy consumption connection are integrated, the wall body is self-reset, meanwhile, the friction-variable energy consumption connecting piece provides reliable energy consumption connection, the energy consumption capacity is controlled by the stress, the seismic grade range applicable to the structure is expanded, the main structure is protected from being damaged, and the excellent structural performance is achieved; the invention adopts dry connection, can be directly assembled and integrated on a construction site, has the advantages of high accuracy, convenient and quick construction, avoidance of site formwork support at a connection part, environmental protection, energy conservation, later-stage replacement, reliable connection, definite force transmission and the like compared with the traditional wet connection mode, and conforms to the development trend of building industrialization; the invention adopts variable friction energy consumption self-reset prestress connection, the connecting piece is processed by a factory, can be formed by welding or bolt connection technology and is directly used for pre-buried installation; the guard plate structure in the energy-consuming connecting system can effectively ensure the force transmission mechanism of the wall body member and protect corner concrete from brittle crushing damage; the ribs are arranged in the strong connecting pieces, so that the overall rigidity of the connecting piece system is increased, the relation among all parts of the connecting system is enhanced, and the overall working performance of the connecting system is ensured; the energy consumption connecting piece can provide friction energy consumption capacity changing along with stress, and the adaptability and the strain capacity of the structural system under the action of an earthquake are enhanced;
the energy-consuming connecting device is integrally symmetrical about a central axis in the thickness direction of the wall body, and is in bolt connection on two sides of the wall body, so that the energy-consuming connecting device is uniform in stress, reliable in connection and high in bearing capacity; the connection part of the energy-consuming connection device and the prefabricated wall board is closed, a template is formed by itself, and the pre-embedding treatment of the connecting piece is convenient and quick in the manufacturing process of the prefabricated wall board; the energy consumption connecting piece with variable friction energy consumption is adopted, so that the energy under the earthquake action can be consumed, the residual deformation of the assembled shear wall structure under the earthquake action is eliminated or reduced, and the obvious plastic deformation of main stressed components such as an assembled wallboard is avoided; the energy-consuming connecting device is embedded in the prefabricated wallboard, so that the arrangement of the wallboard is not influenced, and the friction energy-consuming efficiency is maximized.
The above-described embodiment is only one of the embodiments that can implement the technical solution of the present invention, and the scope of the present invention is not limited by the embodiment, but includes any variations, substitutions and other embodiments that can be easily conceived by those skilled in the art within the technical scope of the present invention disclosed.
Claims (10)
1. An energy consumption connecting device for an assembled shear wall is characterized by comprising an energy consumption connecting system (1) and a pre-stress system (2), wherein the energy consumption connecting system (1) is symmetrically arranged at the bottom corners of two ends of a prefabricated wall plate; the upper end of the energy consumption connecting system (1) is connected with the upper prefabricated wall plate (4), and the lower end of the energy consumption connecting system is connected with the lower prefabricated wall plate (5); the prestress system (2) penetrates through the central axis of the prefabricated wall board, and the upper-layer prefabricated wall board (4) and the lower-layer prefabricated wall board (5) are connected into a whole through the prestress system (2).
2. The energy-consuming connection arrangement for fabricated shear walls according to claim 1, characterized in that the energy-consuming connection system (1) comprises a strong connection member (11) and an energy-consuming connection member (12); the upper end of the strong connecting piece (11) is connected with the upper prefabricated wallboard (4), and the lower end of the strong connecting piece is flush with the bottom end of the upper prefabricated wallboard (4); the energy-consuming connecting pieces (12) are symmetrically arranged on two sides of the strong connecting piece (11), the upper ends of the energy-consuming connecting pieces (12) are connected with the strong connecting piece (11), and the lower ends of the energy-consuming connecting pieces are connected with the lower-layer prefabricated wall board (5); the energy consumption connecting piece (12) adopts a variable friction energy consumption connecting piece.
3. The energy dissipating connection for fabricated shear walls of claim 2, characterized in that the strong connection member (11) comprises an upper top plate (111), a first end plate (112), a second end plate (113) and an intermediate web (114); the upper top plate (111) is horizontally fixed in the prefabricated wall plate, and the first end plate (112) and the second end plate (113) are vertically arranged at two ends below the upper top plate (111) in parallel;
the first end plate (112) is flush with the end of the prefabricated wall plate, and the second end plate (113) is fixedly arranged in the prefabricated wall plate; the middle web (114) is arranged between the first end plate (112) and the second end plate (113), and the middle web (114) is parallel to the prefabricated wall plate; the energy-consuming connecting pieces (12) are symmetrically arranged on two sides of the middle web plate (114), the upper ends of the energy-consuming connecting pieces (12) are fixedly connected with the upper top plate (111), and the lower ends of the energy-consuming connecting pieces are connected with the lower prefabricated wall plate (5).
4. A power dissipating connection arrangement for fabricated shear walls according to claim 3, wherein the power dissipating connection (12) comprises two sets of friction varying plates, fixing bolts (124) and disc springs (125); the two groups of variable friction plates are symmetrically arranged on two sides of the middle web plate (114), the upper ends of the variable friction plates are fixedly connected with the upper top plate (111), and the lower ends of the variable friction plates are fixedly connected with the lower prefabricated wall plate (5); the fixing bolt (124) horizontally penetrates through the middle web plate (114), and the two groups of variable friction plates are respectively fixed at two ends of the fixing bolt (124); a disc spring (125) is arranged between the variable friction plate and the end part of the fixing bolt (124), and the disc spring (125) is sleeved on the fixing bolt (124).
5. The energy dissipating connection for fabricated shear walls of claim 4, wherein each set of variable friction plates comprises an L-shaped outer friction plate (121) and an L-shaped inner friction plate (122); the L-shaped outer friction plate (121), the L-shaped inner friction plate (122) and the middle web plate (114) are arranged in parallel, the L-shaped inner friction plate (122) is arranged between the L-shaped outer friction plate (121) and the middle web plate (114), the upper end of the L-shaped outer friction plate (121) is fixedly connected with the upper top plate (111), and the lower end of the L-shaped inner friction plate (122) is fixedly connected with the lower prefabricated wall plate (5);
the vertical surface of the L-shaped outer friction plate (121) is provided with a variable friction groove, the vertical surface of the L-shaped inner friction plate (122) is provided with a variable friction bulge, and the variable friction groove of the L-shaped outer friction plate (121) is tightly matched with the variable friction bulge of the L-shaped inner friction plate (122); a bolt rod fixing hole is formed in the center of the vertical surface of the L-shaped outer friction plate (121), a bolt rod shifting groove hole is formed in the vertical surface of the L-shaped inner friction plate (122), the long axis of the bolt rod shifting groove hole is vertically arranged, and a fixing bolt (124) penetrates through the bolt rod shifting groove hole and the bolt rod fixing hole.
6. An energy dissipating connection for a fabricated shear wall according to claim 4 or 5, wherein an internal friction brass plate (123) is provided between the variable friction plate and the intermediate web (114), one side of the internal friction brass plate (123) being disposed in close proximity to the variable friction plate and the other side being disposed in close proximity to the intermediate web (114).
7. The energy-consuming connection device for the fabricated shear wall according to claim 3, wherein upper anchoring steel bars (41) are arranged in the upper prefabricated wall panel (4), and lower anchoring steel bars (51) are arranged in the lower prefabricated wall panel (5);
an upper threaded sleeve (14) is arranged above the upper top plate (111), the lower end of the upper threaded sleeve (14) is fixedly connected with the upper top plate (111), and the lower end of an upper anchoring steel bar (41) is fixedly arranged in the upper threaded sleeve (14) in a penetrating manner;
the lower end of the energy-consuming connecting piece (12) is provided with a lower threaded sleeve (15), the upper end of the lower threaded sleeve (15) is fixedly connected with the energy-consuming connecting piece (12), and the upper end of the lower anchoring steel bar (51) is fixedly arranged in the lower threaded sleeve (15) in a penetrating mode.
8. The energy dissipating connection for fabricated shear walls of claim 3, wherein the first end plate (112) comprises two vertical plates, the two vertical plates being vertically parallel and perpendicular to the prefabricated wall panels; a plurality of reinforcing rib plates (115) are horizontally arranged between the two vertical plates.
9. The energy-consuming connection device for the fabricated shear wall according to claim 3, wherein the energy-consuming connection system (1) further comprises a guard plate structure (13), the guard plate structure (13) is fixedly arranged between the strong connecting member (11) and the prefabricated wall panel; the guard plate structure (13) comprises a guard plate outer side plate (131), a guard plate end plate (132), a guard plate inner side plate (133) and connecting studs (134);
the guard plate outer side plate (131) and the guard plate inner side plate (133) are vertically arranged in parallel, the guard plate outer side plate (131) is flush with the outer surface of the prefabricated wall plate, and the guard plate inner side plate (133) is flush with the inner surface of the prefabricated wall plate; the guard plate outer side plate (131) or the guard plate inner side plate (133) adopts an L-shaped plate, one end of the L-shaped plate is fixedly connected with the upper top plate (111), and the other end of the L-shaped plate is fixedly connected with the second end plate (113);
the guard plate end plate (132) is arranged between the guard plate outer side plate (131) and the guard plate inner side plate (133), and the guard plate end plate (132) is flush with the end part of the prefabricated wall plate; distributed longitudinal ribs in the prefabricated wall body extend into the guard plate structure (13) and are fixed with the guard plate outer side plate (131) or the guard plate inner side plate (133);
the connecting studs (134) horizontally penetrate through the prefabricated wall board, one ends of the connecting studs (134) are fixedly connected with the guard plate outer side plate (131), and the other ends of the connecting studs are fixedly connected with the guard plate inner side plate (133).
10. The energy-consuming connection device for the fabricated shear wall according to claim 1, further comprising shear-resistant studs (3), wherein the shear-resistant studs (3) are symmetrically arranged at two sides of the pre-stress system (2), the upper ends of the shear-resistant studs (3) are connected with the upper prefabricated wall panel (4), and the lower ends of the shear-resistant studs are connected with the lower prefabricated wall panel (5).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010760818.9A CN111749352A (en) | 2020-07-31 | 2020-07-31 | Energy-consuming connecting device for assembly type shear wall |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010760818.9A CN111749352A (en) | 2020-07-31 | 2020-07-31 | Energy-consuming connecting device for assembly type shear wall |
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| CN111749352A true CN111749352A (en) | 2020-10-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115680154A (en) * | 2022-11-21 | 2023-02-03 | 合肥工业大学 | Buckled horizontal connection structure and full-assembly type concrete shear wall |
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2020
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115680154A (en) * | 2022-11-21 | 2023-02-03 | 合肥工业大学 | Buckled horizontal connection structure and full-assembly type concrete shear wall |
| CN115680154B (en) * | 2022-11-21 | 2024-04-19 | 合肥工业大学 | Buckling type horizontal connection structure and fully assembled concrete shear wall |
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