CN111749351A - A self-reset energy-dissipating connection device for prefabricated shear walls - Google Patents

Abstract

The invention discloses a self-resetting energy-consumption connecting device for an assembled shear wall, which comprises energy-consumption connecting pieces, wherein the energy-consumption connecting pieces are symmetrically arranged at the bottom corners of two ends of a prefabricated wallboard and connect an upper wallboard and a lower wallboard into a whole through a prestress system; the energy consumption connecting piece comprises two replaceable plates, and the two replaceable plates are vertically and symmetrically arranged on the inner surface and the outer surface of the upper wallboard; a plurality of bolt holes are vertically and respectively formed in two ends of the replaceable plate, and screw through holes are correspondingly formed in the upper wallboard; the bolt rod penetrates through the bolt hole and the screw rod through hole in sequence to connect the two replaceable plates and the upper wallboard together, and the bolt rod can slide up and down in the bolt hole and the bolt through hole; the self-resetting energy-consuming shock-absorbing wall body disclosed by the invention has the advantages that the bolt rod slides in the bolt hole, the friction force generated by the sliding of the bolt rod in the bolt hole is utilized to consume the earthquake capability, and when the earthquake effect is reduced, the self-resetting energy-consuming shock-absorbing wall body returns to the initial position through the prestress and the self gravity of the wall body, so that the self-resetting energy-consuming shock absorption of the building structure is.

Description

A self-reset energy-dissipating connection device for prefabricated shear walls

technical field

The invention belongs to the technical field of recoverable functional structures, and in particular relates to a self-resetting energy-dissipating connecting device for an assembled shear wall.

Background technique

At present, the "three-level, two-stage" seismic fortification target is mainly adopted; however, due to the complexity and incompleteness of earthquakes, building structures are often subjected to seismic actions that exceed their own seismic fortification intensity; although according to the existing seismic fortifications The fortification target, most building structures will not collapse and cause heavy casualties, but the local damage of building structures caused by the earthquake is difficult to repair, which will seriously affect the normal life of people after the earthquake. The long-term failure to restore the function of buildings has caused huge losses to the society and economy; therefore, the current goal of seismic fortification has gradually changed from ensuring life safety to protecting the life safety of residents and enabling buildings to quickly restore their use and function. The goal of earthquake-resistant fortification for the normal life of residents has changed.

The current building structure is relatively simple in terms of self-resetting ability, application of energy-consuming shock absorption and replaceable components, and cannot effectively improve and exert the seismic performance and recoverable function of the structure. Therefore, how to make the structure have the ability of self-reset, energy consumption and shock absorption and replaceable function at the same time is a technical problem that needs to be solved urgently at present.

SUMMARY OF THE INVENTION

Aiming at the technical problems existing in the prior art, the present invention provides a self-reset energy-dissipating connection device for prefabricated shear walls; in order to solve the problem that the existing building structures cannot have the technologies of self-reset and energy dissipation and shock absorption at the same time question.

To achieve the above object, the technical scheme adopted in the present invention is:

The invention provides a self-resetting energy-dissipating connecting device for an assembled shear wall, comprising an energy-dissipating connecting piece and a prestressing system; The lower end of the connecting piece is flush with the bottom end of the upper wall panel; the prestressing system is arranged through the central axis of the prefabricated wall panel, and the upper wall panel and the lower wall panel are connected as a whole through the prestressing system;

The energy-consuming connector includes two replaceable plates and several bolt rods, and the two replaceable plates are vertically symmetrically arranged on the inner and outer surfaces of the upper wall plate; the two ends of the replaceable plate are respectively provided with a number of bolt holes vertically, and the upper wall plate is provided with a plurality of bolt holes respectively. Correspondingly, a screw through hole is provided; the bolt rod penetrates the bolt hole and the screw through hole in sequence, connecting the two replaceable plates and the upper wall plate together, and the bolt rod can slide in the bolt hole and the bolt through hole.

Further, one end of the replaceable plate is provided with a plurality of rectangular bolt holes and a first strip bolt hole, and the centers of the rectangular bolt holes and the first strip bolt holes are located on the same vertical plane; Above the strip bolt holes, the rectangular bolt holes and the first strip bolt holes are arranged close to the end of the upper wall panel;

The other end of the replaceable plate is provided with a plurality of second bar-shaped bolt holes and circular bolt holes, and the centers of the second bar-shaped bolt holes and the circular bolt holes are located on the same vertical plane; the plurality of second bar-shaped bolt holes are arranged in sequence It is arranged above the circular bolt hole, and the second strip bolt hole and the circular bolt hole are far away from the end of the upper wall panel;

The bolt through holes in the upper wall are arranged corresponding to the rectangular bolt holes, the first strip bolt holes, the second strip bolt holes and the circular bolt holes on the replaceable plate, and the bolt rods are horizontally penetrated in the bolt through holes; The rectangular bolt holes, the first strip-shaped bolt holes, the second strip-shaped bolt holes and the circular bolt holes on the two replaceable plates are respectively connected by bolt rods, and nuts are provided at both ends of the bolt rods.

Further, both the first bar-shaped bolt hole and the second bar-shaped bolt hole are rectangular rounded screw holes, and the long axis of the rectangular rounded screw holes is the vertical direction.

Further, a plurality of through holes are opened in the middle of the replaceable plate, the through holes are arranged in parallel horizontally, the long axes of the through holes are consistent with the horizontal direction, and the through holes divide the middle of the replaceable plate into a plurality of horizontal energy consumption sections.

Further, the number of rectangular bolt holes on the replaceable plate is the same as the number of horizontal energy dissipation sections in the replaceable plate.

Further, the replaceable plate adopts low yield point steel plate.

Further, it also includes two corner steel sleeves, and the two corner steel sleeves are symmetrically arranged at the bottom corners of both ends of the prefabricated wall panel; the corner steel sleeve includes a steel sleeve bottom plate and two steel sleeve side plates, and the steel sleeve bottom plate is horizontally arranged at the bottom corners. At the bottom end of the upper wall panel, two steel sleeve side panels are vertically symmetrically arranged on the inner and outer surfaces of the upper wall panel, and the bottom end of the steel sleeve side panel is fixedly connected with the steel sleeve bottom plate; Between the wall panels, there are bolt through holes on the side plates of the steel sleeve, the bolt through holes on the side plates of the steel sleeve are correspondingly arranged with the bolt holes on the replaceable plate, and the side plates of the steel sleeve are connected with the replaceable plate by bolt rods. .

Further, the upper end of the steel sleeve side plate is exposed to the upper end of the replaceable plate, and the side of the steel sleeve side plate away from the prefabricated wall panel is arranged with the exposed replaceable plate, and the length of the exposed replaceable plate of the steel sleeve side plate is 50 mm. -100mm.

Further, the prestressing system includes prestressing tendons and anchoring devices. The two anchoring devices are respectively arranged at the upper and lower ends of the prestressing steel bars. The central axis of the upper wall panel and the lower wall panel is provided with a prestressing tendon channel, and the prestressing bar. The penetration is arranged in the prestressed rib channel; a steel backing plate is arranged between the anchoring device and the upper wall panel or the lower wall panel.

Compared with the prior art, the beneficial effects of the present invention are:

The invention provides a self-reset energy-dissipating connection device for an assembled shear wall. By arranging a prestressing system on the central axis of the upper and lower prefabricated wall panels, the prestressing force and the self-weight of the wall body are used to control the wall body to sway; Energy-dissipating connectors are arranged at the bottom corners of both ends of the prefabricated wall panels. The energy-dissipating connectors are combined with replaceable plates and bolt rods. Under the action of earthquakes, the prefabricated wall panels will sway around one corner of the wall and the other The side wall corner is lifted; when the wall corner is swayed, the bolt rod slides in the bolt hole of the replaceable plate and the bolt through hole of the prefabricated wall panel, and the friction force and prestress system generated when the bolt rod slides are used to realize the effective seismic energy It avoids the damage to the wall structure caused by the seismic action; the seismic energy is mainly concentrated at the replaceable plate, and the energy consumption and damage of the replaceable plate can effectively ensure that the non-replaceable parts of the structure remain intact; Under the action of the stress system, the self-reset function is realized by prestressing and the wall's own gravity returning to the initial position, thereby realizing the self-reset and energy consumption and shock absorption of the building structure.

Further, by setting a number of rectangular bolt holes at one end of the replaceable plate, the rectangular bolt holes reserve a large installation space for the bolt rod installation, which is convenient for the bolt rod to be installed in the rectangular bolt holes; The rod can slide in the rectangular bolt hole, and the friction energy dissipation is realized by sliding the bolt rod in the rectangular bolt hole, which ensures the stability of the wall structure in the early stage of the wall swing; by setting the strip bolt hole, the strip bolt hole is the bolt rod Provides a large sliding space, realizes the effective sliding of the bolt rod in the strip bolt hole under the action of earthquake, and meets the requirements of friction energy dissipation of the wall and shear deformation energy dissipation of the steel plate under the action of earthquake; The bolts and the bolt rods are arranged in the circular bolt holes, which realizes the fixation between the replaceable plate and the prefabricated wall plate and ensures the stability of the energy-consuming connecting piece.

Further, the strip bolt hole adopts a rectangular rounded screw hole, which avoids the stress concentration caused by the bolt rod sliding to the end of the strip bolt hole, increases the contact surface between the bolt rod and the strip bolt hole, and avoids the bolt rod from breaking. , to ensure the reliability and stability of energy-consuming connectors.

Further, by opening a through hole in the middle of the replaceable plate, a weak area is formed in the middle part of the replaceable plate, which ensures that the plastic deformation of the replaceable plate occurs in the middle part of the replaceable plate, and realizes the shaping of the replaceable plate. Uniformity of deformation distribution.

Further, the number of rectangular bolt holes on the replaceable plate is set to be the same as the number of horizontal energy-dissipating sections in it, ensuring that the bolt rods in the rectangular bolt holes have sufficient constraints on the horizontal energy-dissipating sections in the replaceable plate. At the same time, the weakening of the connecting area of the replaceable plate by the opening area of the rectangular bolt hole is avoided.

Further, the replaceable plate is made of low yield point steel plate, which is easy to process, has good deep drawing performance and deep drawing performance, and is easy to process to produce steel products with complex shapes; at the same time, it has good plastic deformation, low The performance of cycle fatigue and hysteretic energy dissipation can effectively improve the seismic performance of the structure.

Further, by arranging an angle steel sleeve between the prefabricated wall panel and the replaceable panel, the angle steel sleeve adopts a trough structure formed by fixing and splicing three plates, and by connecting the angle steel sleeve and the prefabricated wall panel into a whole, the It is used to strengthen the rigidity and strength of the connection area, and at the same time protect the concrete at the connection between the energy-consuming connector and the prefabricated wall from crushing damage due to the extrusion of the energy-consuming connector to the wall.

Further, the steel sleeve side plate is exposed to the replaceable plate setting, which increases a larger protection area for the bottom corner of the wall panel, and prevents the energy-consuming connectors from causing extrusion damage to the concrete at the bottom corner of the wall panel; The rectangular corners are set as arc chamfers, which avoids the profit concentration of the corner steel sleeves.

Further, by arranging steel spacers between the anchoring device and the prefabricated wall panels, stress concentration at the ends of the prestressed tendons is avoided, thereby crushing the concrete avoided by the wall.

Description of drawings

1 is a schematic diagram of the overall assembly structure of the self-resetting energy-consuming connecting device according to the present invention;

Fig. 2 is the schematic diagram of the self-resetting energy-dissipating connecting device of the present invention under the action of earthquake;

3 is a schematic structural diagram of a replaceable plate in the self-resetting energy-consuming connection device according to the present invention.

Among them, 1, energy dissipation connector, 2 prestressing system, 3 corner steel sleeve, 4 upper wall panel, 5 lower wall panel, 6 bolt rod; 11 replaceable plate; 111 rectangular bolt hole, 112 first strip bolt hole, 113 second strip bolt hole, 114 round bolt hole; 31 steel sleeve bottom plate, 32 steel sleeve side plate.

Detailed ways

In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the following specific embodiments will further describe the present invention in detail. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

As shown in Figures 1-3, the present invention provides a self-resetting energy-dissipating connection device for an assembled shear wall, including an energy-dissipating connector 1, a prestressing system 2 and an angle steel sleeve 3; the energy-dissipating connection Part 1 is symmetrically arranged at the bottom corners of both ends of the prefabricated wall panel, and the lower end of the energy dissipation connector 1 is flush with the bottom end of the upper wall panel 4; the prestressing system 2 is arranged through the central axis of the prefabricated wall panel, through the prefabricated wall panel. The stress system 2 connects the upper wall panel 4 and the lower wall panel 5 as a whole; the corner steel sleeves 3 are symmetrically arranged at the bottom corners of both ends of the prefabricated wall panel, and are located between the energy dissipation connector 1 and the prefabricated wall panel, which improves the performance of the prefabricated wall panel. The strength and stiffness of the prefabricated wallboard connector area form an effective protection for the bottom corner of the prefabricated wallboard, and avoid crushing damage to the wall caused by the energy-consuming connector 1 .

The energy-consuming connector 1 includes two replaceable plates 11 and several bolt rods. The two replaceable plates 11 are vertically symmetrically arranged on the inner and outer surfaces of the upper wall panel 4; , the upper wall plate 4 is correspondingly provided with a screw through hole; the bolt rod 6 passes through the bolt hole and the screw through hole in turn, and both ends of the bolt rod 6 are provided with nuts; The plate 11 and the upper wall plate 4 are connected together, and the bolt rod 6 can slide up and down in the bolt hole and the bolt through hole.

One end of the replaceable plate 11 is provided with a plurality of rectangular bolt holes 111 and a first strip-shaped bolt hole 112, and the centers of the rectangular bolt holes 111 and the first strip-shaped bolt hole 112 are located on the same vertical plane; a plurality of rectangular bolt holes 111 They are arranged vertically above the first bar-shaped bolt holes 112 in sequence, and the rectangular bolt holes 111 and the first bar-shaped bolt holes 112 are both arranged close to the end of the upper wall panel 4 .

The other end of the replaceable plate 11 is provided with a plurality of second bar-shaped bolt holes 113 and circular bolt holes 114, and the centers of the second bar-shaped bolt holes 113 and the circular bolt holes 114 are located on the same vertical plane; The bar-shaped bolt holes 113 are vertically arranged above the circular bolt holes 114 in sequence, and the second bar-shaped bolt holes 113 and the circular bolt holes 114 are both away from the end of the upper wall panel 4 .

The bolt through holes in the upper wall 4 correspond to the rectangular bolt holes 111 , the first strip bolt holes 112 , the second strip bolt holes 113 and the circular bolt holes 114 on the replaceable plate 11 ; The position and size of the bolt through hole corresponding to the hole 111 are consistent with the position and size of the rectangular bolt hole, and a bolt rod is provided through the rectangular bolt hole and its corresponding bolt through hole; and the first strip bolt hole 112 The position and size of the corresponding bolt through hole are consistent with the position and size of the first strip-shaped bolt hole, and the first strip-shaped bolt hole and its corresponding bolt through hole are provided with a bolt rod; The position and size of the bolt through hole corresponding to the bolt hole 113 are consistent with the position and size of the second strip bolt hole, and a bolt rod is provided through the second strip bolt hole and its corresponding bolt through hole; The position and size of the bolt through hole corresponding to the circular bolt hole 114 are consistent with the position and size of the circular bolt hole, and a bolt rod is provided through the circular bolt hole and its corresponding bolt through hole; A bolt rod horizontally runs through one of the replaceable panels, the prefabricated wall panel and the other replaceable panel, and nuts are provided at both ends of the bolt rod, and the two replaceable panels and the prefabricated wall panels are connected together by the bolt rod; Among them, the bolt rod in the rectangular bolt hole and the strip bolt hole can slide under the action of force; the friction force and prestress system generated when the bolt rod slides are used to realize the effective consumption of seismic energy and avoid the impact of seismic action on the Damage to the wall structure; the replaceable board 11 is connected to the prefabricated wall board through the bolt rod and the nut, and the replacement and maintenance of the replaceable board 11 is realized.

Preferably, the first bar-shaped bolt holes 112 and the second bar-shaped bolt holes 113 are rectangular rounded screw holes, and the long axis of the rectangular rounded screw holes is the vertical direction; the bar-shaped bolt holes are rectangular rounded screw holes, It avoids the stress concentration caused by the bolt rod sliding to the end of the strip bolt hole, increases the contact surface wall between the bolt rod and the strip bolt hole, prevents the bolt rod from breaking, and ensures the reliability and stability of the energy-consuming connection.

A number of through holes are opened in the middle of the replaceable plate 11, the through holes are arranged in parallel up and down, the long axis of the through holes is consistent with the horizontal direction, and the through holes divide the middle of the replaceable plate into several horizontal energy-consuming sections; A through hole is opened in the middle of the replaceable plate, and a weak area is formed in the middle part of the replaceable plate, which ensures that the plastic deformation of the replaceable plate occurs in the middle part of the replaceable plate, and realizes the uniformity of the plastic deformation distribution of the replaceable plate.

Preferably, the number of rectangular bolt holes on the replaceable plate 11 is the same as the number of horizontal energy-dissipating sections in the replaceable plate, which ensures that the bolt rods in the rectangular bolt holes are sufficient for the horizontal energy-dissipating sections in the replaceable plate. At the same time, it avoids the weakening of the connection area of the replaceable plate by the opening area of the rectangular bolt hole.

The replaceable plate 11 is made of low yield point steel plate, which is easy to process, has good deep drawing performance and deep drawing performance, and is easy to process to produce steel products with complex shapes; at the same time, it has good plastic deformation and low cycle fatigue. and hysteretic energy dissipation, which can effectively improve the seismic performance of the structure.

The corner steel sleeve 3 includes a steel sleeve bottom plate 31 and two steel sleeve side plates 32. The steel sleeve bottom plate 31 is horizontally arranged at the bottom end of the upper wall plate 4, and the two steel sleeve side plates 32 are vertically symmetrically arranged on the upper wall plate 4. On the inner and outer surfaces, the bottom end of the steel sleeve side plate 32 is fixedly connected with the steel sleeve bottom plate 31; the steel sleeve side plate 32 is arranged between the replaceable plate 11 and the prefabricated wall panel, and the The bolt fixing holes on the sleeve side plate 32 are correspondingly arranged with the bolt holes on the replaceable plate 11 , and the steel sleeve side plate 32 is tightly connected with the replaceable plate 11 through bolt rods.

The upper end of the steel sleeve side plate 32 is arranged to expose the upper end of the replaceable plate 11 , the side of the steel sleeve side plate 32 away from the prefabricated wall panel is arranged with the exposed replaceable plate 11 , and the steel sleeve side plate 32 is exposed to the replaceable plate 11 . The length is 50-100mm; the steel sleeve side plate is exposed to the replaceable plate setting, which increases a larger protection area for the bottom corner of the wallboard, and avoids the extrusion damage to the concrete at the bottom corner of the wallboard by the energy-consuming connector; The rectangular corners of the steel sleeve are set as arc chamfering, which avoids the profit concentration of the corner steel sleeve.

The prestressing system 2 includes a prestressing tendon and an anchoring device. The two anchoring devices are respectively arranged at the upper and lower ends of the prestressing steel bar. The central axis of the upper wall panel 4 and the lower wall panel 5 is provided with a prestressing tendon channel, and the prestressing bar. It is arranged through the prestressed rib channel; a steel backing plate is arranged between the anchoring device and the upper wall panel 4 or the lower wall panel 5 .

working principle

The self-resetting energy-dissipating connection device for an assembled shear wall of the present invention utilizes the prestressing provided by the prestressing system and the self-weight of the prefabricated wall panels, and the wall begins to swing; in the early stage of the wall swing, the bolts The rod can slide in the rectangular bolt hole, and friction energy dissipation is realized by sliding the bolt rod in the rectangular bolt hole, which ensures the stability of the wall structure in the early stage of the wall swing; in the early stage of earthquake action, the bolt rod slides in the strip bolt hole , the side of the replaceable plate begins to rise with the wall, using the friction force generated by the bolt rod sliding in the screw hole to consume the seismic capacity; with the strengthening of the seismic action, the bolt rod slowly slides to the edge of the strip bolt hole ; At this time, the other side of the replaceable plate is fixed, and the replaceable plate begins to undergo plastic deformation and yield energy consumption; at the same time, the prestressing system installed in the middle of the wall also begins to consume seismic energy cooperatively; when the seismic action decreases At the time, under the action of the prestressing system, the self-resetting function is realized through the prestressing and the weight of the wall itself returning to the initial position, thereby realizing the self-resetting and energy consumption and shock absorption of the building structure.

Manufacturing and assembly methods

Step 1. Prefabricated wall panel production

The prefabricated wall adopts the reinforced concrete shear wall that has been prefabricated in advance according to the specifications. Before pouring the concrete, a through hole is reserved in the part of the wall where the prestressed tendons need to be placed, and a number of holes are also reserved in the corresponding position in the replaceable area. Corresponding bolt through-holes with the same shape and specification; at the same time, pre-buried the corner steel sleeve in the replaceable area and the steel backing plate at the end of the prestressed tendon in the corresponding position, and formed a whole with the wall through concrete pouring; among them, The corner steel sleeve is prefabricated in the factory. The corner steel sleeve is a groove structure formed by welding three plates, and the two side plates of the groove are fixed with bolts corresponding to the replaceable plates and with the same specification and shape. hole.

Step 2. Manufacture of replaceable plates and corner steel sleeves.

The replaceable plates are all prefabricated in the factory, and the replaceable plates have several bolt holes of different shapes; among them, there are rectangular bolt holes, rectangular rounded bolt holes and round screw holes; in order to make the plastic deformation of the replaceable plate Evenly distributed, through holes are opened in the middle of the replaceable plate;

Step 3. Wall panel hoisting construction

After the upper and lower wall panels are hoisted in place, first set up temporary supports, and then connect the upper and lower wall panels; after that, place the prefabricated replaceable panels on the inner and outer surfaces of the prefabricated wall panels, and set the prefabricated wall panels symmetrically. At the bottom corners of both ends; install the bolt rods and nuts of the circular screw holes to fix the replaceable metal plate, and then perform the initial screwing and installation of the bolt rods and nuts in the remaining bolt holes in turn to ensure that each nut can be accurately installed according to the position Then, tighten the bolts.

Step 4. Tension the prestressed tendons that have passed through the tunnel and protruded from the upper and lower wall panels. The prestressed tendons are tensioned by the tensioning equipment, and then the tensioned prestressed tendons are anchored by the anchoring device.

Example

The present embodiment provides a self-reset energy-consuming connection device for a prefabricated shear wall, so as to improve the seismic performance of the building structure, realize the rapid replacement of the building structure after the earthquake, and reduce the difficulty of repair.

A self-reset energy-dissipating connection device for an assembled shear wall described in this embodiment includes energy-dissipating connectors, a prestressing system and a wall steel sleeve; wherein, the energy-dissipating connectors are symmetrically arranged on the prefabricated wall panels At the bottom corners of both ends, the lower end of the energy-consuming connector is flush with the bottom end of the upper wall panel; the prestressing system is arranged through the central axis of the prefabricated wall panel, and the upper wall panel and the lower wall panel are connected by the prestressing system. into a whole.

The prestressing system includes prestressing tendons and anchoring devices. The two anchoring devices are respectively arranged at the upper and lower ends of the prestressing steel bars. The central axis of the upper wall panel and the lower wall panel are provided with prestressing tendon channels. In the prestressed rib channel; a steel backing plate is arranged between the anchoring device and the upper wall panel or the lower wall panel; when the wall is prefabricated, a through-hole channel is reserved in the corresponding part of the wall, and the wall is hoisted in place Afterwards, the prestressed rib protrudes out of the wall through the tunnel, and the prestressed rib is tensioned by the method of post-tensioning; at the same time, a thin steel backing plate is set at the end of the prestressing rib, and the thin steel backing plate is set in the Between the anchoring device and the upper or lower wall panel, the stress concentration at the end of the prestressed tendon is prevented, and the wall concrete is prevented from being crushed.

The energy-consuming connector includes two replaceable metal plates and several bolt rods. In order to facilitate the uniform distribution of plastic deformation of the replaceable metal plates, in this embodiment, three holes of the same shape are opened in the middle of the replaceable metal Each hole is arranged horizontally up and down, and the long axis of the hole is in the horizontal direction; among them, the size of the connecting steel plates between adjacent holes is the same, which is conducive to more uniform distribution of plastic damage, thereby effectively improving the energy dissipation capacity of the replaceable metal plate.

In this embodiment, the four replaceable metal plates in the two energy-consuming connectors are all made of Q235 low-yield point steel plates; seven screw holes are opened on each replaceable metal plate, wherein the three screw holes are A rectangular screw hole, a first rectangular rounded screw hole, two second rectangular rounded screw holes and a circular screw hole, and the centers of the rectangular screw hole and the first rectangular rounded screw hole are located on the same vertical plane; The rectangular screw hole is arranged above the rectangular rounded screw hole, and the rectangular screw hole and the rectangular rounded screw hole are arranged close to the end of the upper wall plate; the center of the second rectangular rounded screw hole and the circular screw hole are located in the same vertical The second rectangular rounded screw hole is arranged above the circular screw hole, and both the second rectangular rounded screw hole and the circular screw hole are far away from the end of the upper wall panel; the rectangular rounded screw hole is to meet the requirements of the wall In order to meet the requirements of friction energy consumption and steel plate shear deformation energy consumption under earthquake action, the circular screw hole is used to fix the replaceable metal plate. All screw holes are connected by bolts and tightened by nuts on both sides of the wall; by arranging four replaceable metal plates on both sides of the bottom corners of the prefabricated wall panels, at the same time, in order to meet the needs of the prefabricated wall panels in the For the force requirements in two horizontal directions, the two replaceable metal plates on the same side of the prefabricated wallboard are arranged symmetrically.

The corner steel sleeve is arranged in the replaceable area where the energy-consuming connector and the upper wall panel are connected. The corner steel sleeve is prefabricated in the factory in advance, and is a groove-shaped structure formed by welding three steel plates. The steel sleeve side plates are vertically and parallelly arranged on the inner and outer surfaces of the prefabricated wall panels, and corresponding bolt holes are reserved in the steel sleeve side plates. By pre-embedding in the wall in advance, it forms an integral body with the wall structure; the corner steel sleeve is used to strengthen the rigidity and strength of the connection area, and at the same time protect the concrete at the connection between the replaceable metal plate and the prefabricated wall panel. The metal plate is crushed and damaged by the extrusion of the wall body; in this embodiment, the upper part and the inner side of the upper end of the side plate of the steel sleeve are extended to replace the metal plate, and the extension length is 50-100mm.

The self-resetting energy-dissipating connection device for an assembled shear wall described in the present invention forms multiple anti-seismic defense lines through the coordinated force of the bolt rod, the replaceable plate, the prestressed system and the non-replaceable components, etc. It can effectively improve the seismic performance of the structure; in the event of an earthquake, the friction force generated by the sliding of the bolt rod, the yield of the replaceable plate and the prestressed tendons are mainly used to consume the seismic energy; and the seismic energy is mainly concentrated in the replaceable parts. The energy consumption and damage of the replacement plate can effectively ensure that the non-replaceable parts of the structure remain intact; after the earthquake, the structure can be restored to the structural state before the earthquake through its own self-resetting ability; at the same time, the space between the replaceable parts and the wall Bolted connection is adopted, which is easy to replace after earthquake, so that the seismic function of the structure can be quickly restored, and the construction cost of repair and reinforcement of the structure after the earthquake can be effectively reduced.

The prefabricated wall panels, energy-consuming connectors, prestressed systems and corner steel sleeves in the present invention are all prefabricated in the factory, and can be assembled directly on the construction site as a whole. Compared with the traditional wet connection method, it has high precision, The advantages of convenient and quick construction and later replacement are in line with the development trend of building industrialization; the overall structure of the invention is simple, convenient for construction, connected by bolts, and made of common building materials such as steel and concrete, which is convenient for application and promotion.

The above-mentioned embodiment is only one of the embodiments that can realize the technical solution of the present invention. The scope of protection claimed in the present invention is not only limited by this embodiment, but also included in the technical scope disclosed in the present invention. Anyone familiar with the present technology Variations, substitutions, and other implementations will readily occur to those skilled in the art.

Claims (9)

1. A self-resetting energy-dissipating connection device for an assembled shear wall, characterized in that it comprises an energy-dissipating connector (1) and a prestressing system (2); the energy-dissipating connector (1) is symmetrically arranged on a prefabricated At the bottom corners of both ends of the wall panel, the lower end of the energy dissipation connector (1) is flush with the bottom end of the upper wall panel (4); the prestressing system (2) is arranged through the central axis of the prefabricated wall panel, The stress system (2) connects the upper wall panel (4) and the lower wall panel (5) into a whole; The energy-consuming connector (1) includes two replaceable plates (11) and a plurality of bolt rods, and the two replaceable plates (11) are vertically symmetrically arranged on the inner and outer surfaces of the upper wall plate (4); The two ends are respectively provided with a number of bolt holes vertically, and the upper wall panel (4) is provided with screw through holes correspondingly; 4) Connected together, and the bolt rod can slide in the bolt hole and the bolt through hole. 2. A self-resetting energy-dissipating connection device for an assembled shear wall according to claim 1, characterized in that one end of the replaceable plate (11) is provided with a plurality of rectangular bolt holes (111) and a first The strip bolt holes (112), the rectangular bolt holes (111) and the centers of the first strip bolt holes (112) are located on the same vertical plane; a plurality of rectangular bolt holes (111) are arranged in sequence in the first strip bolt holes (112). Above 112), the rectangular bolt holes (111) and the first strip bolt holes (112) are arranged close to the end of the upper wall plate (4); The other end of the replaceable plate (11) is provided with a plurality of second bar-shaped bolt holes (113) and circular bolt holes (114), and the center of the second bar-shaped bolt holes (113) and the circular bolt holes (114) are located on the same vertical plane; a plurality of second bar-shaped bolt holes (113) are sequentially arranged above the circular bolt holes (114), and both the second bar-shaped bolt holes (113) and the circular bolt holes (114) are far away from the upper part the end of the wall panel (4); Bolt through holes in the upper wall (4) and rectangular bolt holes (111), first strip bolt holes (112), second strip bolt holes (113) and round bolts on the replaceable plate (11) The holes (114) are correspondingly arranged, and the bolt rods are horizontally penetrated in the bolt through holes; the rectangular bolt holes (111), the first strip bolt holes (112) and the second strip bolts on the two replaceable plates (11) The holes (113) and the circular bolt holes (114) are respectively connected by bolt rods, and nuts are provided at both ends of the bolt rods. 3. A self-resetting energy-dissipating connection device for an assembled shear wall according to claim 2, wherein the first strip bolt hole (112) and the second strip bolt hole (113) are both A rectangular rounded screw hole is used, and the long axis of the rectangular rounded screw hole is the vertical direction. 4. A self-reset energy-dissipating connection device for an assembled shear wall according to claim 2, characterized in that a plurality of through holes are opened in the middle of the replaceable plate (11), and a plurality of through holes are arranged in parallel horizontally, The long axis of the through hole is consistent with the horizontal direction, and a plurality of through holes divide the middle of the replaceable plate into a plurality of horizontal energy-consuming sections. 5. A self-resetting energy-consuming connection device for prefabricated shear walls according to claim 4, characterized in that the number of rectangular bolt holes on the replaceable plate (11) is the same as the level in the replaceable plate (11). The number of energy consumption segments is the same. 6 . The self-resetting energy-dissipating connection device for prefabricated shear walls according to claim 1 , wherein the replaceable plate ( 11 ) adopts a low yield point steel plate. 7 . 7. A self-reset energy-dissipating connection device for an assembled shear wall according to claim 1, characterized in that, further comprising two corner steel sleeves (3), the two corner steel sleeves (3) being symmetrical The corner steel sleeves (3) include a steel sleeve bottom plate (31) and two steel sleeve side plates (32), and the steel sleeve bottom plate (31) is horizontally arranged on the upper wall plate (4). ), two steel sleeve side plates (32) are vertically symmetrically arranged on the inner and outer surfaces of the upper wall panel (4), and the bottom end of the steel sleeve side plate (32) is fixedly connected with the steel sleeve bottom plate (31); The sleeve side plate (32) is arranged between the replaceable plate (11) and the prefabricated wall plate, the steel sleeve side plate (32) is provided with bolt through holes, and the bolt through holes on the steel sleeve side plate (32) are connected with the replaceable The bolt holes on the plate (11) are correspondingly arranged, and the steel sleeve side plate (32) is connected with the replaceable plate (11) through bolt rods. 8. A self-reset energy-dissipating connection device for prefabricated shear walls according to claim 7, characterized in that the upper end of the steel sleeve side plate (32) is exposed and the upper end of the replaceable plate (11) is provided , the side of the steel sleeve side plate (32) away from the prefabricated wall panel is arranged with the exposed replaceable plate (11), and the length of the exposed replaceable plate (11) of the steel sleeve side plate (32) is 50-100mm. 9. A self-resetting energy-dissipating connection device for an assembled shear wall according to claim 1, wherein the prestressing system (2) comprises a prestressing tendon and an anchoring device, and the two anchoring devices are respectively provided At the upper and lower ends of the prestressed reinforcement bars, the central axis of the upper wall panel (4) and the lower wall panel (5) are provided with prestressed reinforcement channels, and the prestressed reinforcement bars are arranged through the prestressed reinforcement channels; the anchoring device is connected to the upper wall panel. A steel backing plate is arranged between the plate (4) or the lower wall plate (5).

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