CN114165093B - An assembled shock-absorbing structure and a shear wall with restorable function - Google Patents
An assembled shock-absorbing structure and a shear wall with restorable function Download PDFInfo
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- 238000013016 damping Methods 0.000 description 53
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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
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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
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Abstract
本发明属于剪力墙技术领域，并具体公开了一种装配式的减震结构和设置有该种减震结构的可恢复功能的剪力墙；该种减震结构包括上墙变摩擦组件和下墙变摩擦组件，上墙变摩擦组件和下墙变摩擦组件分别设置有上墙波形板和下墙波形板，且上墙波形板和下墙波形板的波浪曲面贴合；该种剪力墙的上墙体和下墙体分别与上墙变摩擦组件和下墙变摩擦组件可拆卸连接，且上墙体和下墙体通过预应力筋贯穿；地震时，通过该种减震结构波浪曲面之间的摩擦作用耗散地震能量，实现减震功能；地震后，通过预应力筋的自复位功能使剪力墙恢复位置，并通过更换减震结构或更换减震结构部分元件的方式，实现剪力墙结构和功能的恢复。
The present invention belongs to the technical field of shear walls, and specifically discloses an assembled shock-absorbing structure and a shear wall with restorable function provided with the shock-absorbing structure; the shock-absorbing structure comprises an upper wall variable friction component and a lower wall variable friction component, the upper wall variable friction component and the lower wall variable friction component are respectively provided with an upper wall corrugated plate and a lower wall corrugated plate, and the wave surfaces of the upper wall corrugated plate and the lower wall corrugated plate fit together; the upper wall and the lower wall of the shear wall are respectively detachably connected to the upper wall variable friction component and the lower wall variable friction component, and the upper wall and the lower wall are penetrated by prestressed tendons; during an earthquake, the friction between the wave surfaces of the shock-absorbing structure dissipates seismic energy to achieve the shock-absorbing function; after the earthquake, the shear wall is restored to its position by the self-resetting function of the prestressed tendons, and the shear wall structure and function are restored by replacing the shock-absorbing structure or replacing some components of the shock-absorbing structure.
Description
Technical Field
The invention belongs to the technical field of shear walls, and particularly relates to an assembled damping structure and a shear wall with a restorable function.
Background
In recent years, construction engineering has experienced a trend from structural earthquake resistance to structural earthquake reduction and isolation to functional structures that can be restored. The method is characterized in that the construction structure is characterized in that a high-performance material is adopted, a ductile anti-seismic design method is adopted to improve the anti-seismic function of the construction structure, but the construction structure is still easy to generate serious damage and even collapse under the action of large earthquake, so that the engineering structure anti-seismic technology is gradually applied to the engineering construction, and the earthquake energy suffered by the construction structure is reduced by adding additional dampers and energy-consuming components in the structure or adding vibration-isolating elements on the basis, so that the damage degree of the construction structure under the action of earthquake is reduced. However, the structure can effectively ensure the safety of the main structure under the action of an earthquake, but the shear wall or the shock absorbing and isolating element is seriously damaged, the structure is not easy to repair after the earthquake, the repairing economic cost is high, and the functional structure can be restored.
The recoverable functional structure is a structure which can recover the use function of the structure without repair or slightly repair after earthquake, and the structure can effectively reduce the damage of various parts of the building structure, but the existing recoverable functional structure still has the defects of large residual deformation after earthquake, easy damage of the connecting part and the like, and is insufficient for completely recovering the function of the building structure. Therefore, how to further improve the earthquake-proof and recoverable functions of building structures is a technical problem which is urgently needed to be solved at present.
Based on the defects and shortcomings, the inventor makes a further improved design on the existing shear wall structure to solve the problem that the structure of the shear wall is damaged under the action of an earthquake in the prior art, and meanwhile solves the problem that a wall damping element is seriously damaged and is not easy to repair in the prior art.
Disclosure of Invention
Aiming at the defects or improvement demands of the prior art, the invention provides an assembled damping structure and a shear wall with a restorable function, so as to effectively solve the problem that the structure of the shear wall is damaged under the action of an earthquake in the prior art, and solve the problem that a wall damping element is seriously damaged and is not easy to repair in the prior art.
In order to achieve the above object, as one aspect of the present invention, the present invention provides an assembled type damping structure including an upper wall variable friction assembly and a lower wall variable friction assembly;
The upper wall transformation friction assembly comprises an upper wall connecting plate and an upper wall corrugated plate, wherein the upper wall connecting plate is positioned on a horizontal plane, the upper wall corrugated plate is positioned on a vertical plane vertical to the horizontal plane and below the upper wall connecting plate, both side surfaces of the upper wall corrugated plate are wavy curved surfaces, and the transition block is fixedly connected between the upper wall connecting plate and the upper wall corrugated plate;
the lower wall deformation friction assembly comprises two lower wall corrugated plates and lower wall connecting plates, wherein the two lower wall corrugated plates are arranged parallel to the vertical plane, the surfaces, close to each other, of the two lower wall corrugated plates are all wavy curved surfaces, the two lower wall corrugated plates are respectively located on the outer sides of the two wavy curved surfaces of the upper wall corrugated plates, the surfaces, close to each other, of the two lower wall corrugated plates are respectively attached to the two wavy curved surfaces of the upper wall corrugated plates, and the lower wall connecting plates are parallel to the horizontal plane and are fixedly connected below the two lower wall corrugated plates.
Through the conception, on one hand, the damping structure can dissipate earthquake energy through the friction effect between the upper wall corrugated plate and the lower wall corrugated plate to achieve a damping function, on the other hand, the damping structure is assembled and easy to install and disassemble, when the damping structure is applied to a shear wall, the damage of an earthquake to the shear wall can be reduced, the problem that the structure of the shear wall is damaged under the action of the earthquake is solved, and the damping structure can be disassembled and replaced to facilitate recovery of the wall structure and the function.
As a further preferred aspect, the two lower wall corrugated plates are located below the transition block, and a gap is left between the lower wall corrugated plates and the transition block, so as to prevent the lower wall corrugated plates, the upper wall corrugated plates and the transition block from being deformed by extrusion during an earthquake.
The damping structure further comprises two energy dissipation plates, wherein the two energy dissipation plates are respectively clung to the two connecting surfaces, one end of each energy dissipation plate is detachably connected with the transition block, the other end of each energy dissipation plate is detachably connected with the lower wall corrugated plate, and by arranging the energy dissipation plates, the vibration resistance and the energy dissipation capacity of the damping structure can be improved and the damage of an upper wall deformation friction assembly and a lower wall deformation friction assembly can be relieved by using the tensile deformation of the energy dissipation plates.
The energy dissipation plates and the transition blocks are further preferably detachably connected through a plurality of first high-strength bolts, each first high-strength bolt penetrates through the energy dissipation plates and the transition blocks which are overlapped from outside to inside, two ends of each first high-strength bolt are respectively connected to the outer sides of the two energy dissipation plates, the energy dissipation plates and the lower wall corrugated plates are detachably connected through a plurality of second high-strength bolts, each second high-strength bolt penetrates through the energy dissipation plates, the lower wall corrugated plates and the upper wall corrugated plates which are sequentially overlapped from outside to inside, two ends of each second high-strength bolt are respectively connected to the outer sides of the two energy dissipation plates, and the energy dissipation plates are convenient to disassemble and assemble through high-strength bolt connection.
And the hole diameter of the bolt hole is larger than the outer diameter of the penetrated first high-strength bolt or second high-strength bolt, so that the first high-strength bolt and the second high-strength bolt can slide in the bolt hole along with the lifting of the wall body in the earthquake process, and a larger degree of freedom is provided for the dislocation of the upper wall corrugated plate and the lower wall corrugated plate, and the shock absorption effect is improved.
As a further preferable mode, two ends of each of the first high-strength bolt and the second high-strength bolt are connected to the outer sides of the two energy dissipation plates through elastic elements; during an earthquake, the elastic element is extruded, and the damping effect of the damping structure is further improved.
As a further preference, the elastic element is a belleville spring.
As further preferable, the middle part of the energy consumption plate is symmetrically provided with a plurality of holes so as to improve the energy consumption capability of the energy consumption plate.
As a further preferred aspect, the opening of the energy dissipation plate is elliptical.
According to another aspect of the invention, a shear wall capable of recovering functions is provided, and comprises an upper wall body, a lower wall body, damping structures and prestress ribs, wherein the upper wall body and the lower wall body are parallel to the vertical plane and are connected up and down, a plurality of empty slots are formed in the connecting positions of the upper wall body and the lower wall body, one damping structure is arranged in each empty slot, an upper wall corrugated plate and a lower wall corrugated plate of each damping structure are parallel to the wall surfaces of the upper wall body and the lower wall body, an upper wall connecting plate and a lower wall connecting plate of each damping structure are detachably connected with the upper wall body and the lower wall body respectively, a plurality of prestress ribs are arranged, and each prestress rib penetrates through the upper wall body and the lower wall body.
Through the concept, the shear wall can realize the shock absorption of the wall body of the shear wall by using the shock absorption structure and connecting the shock absorption structure with the upper wall body and the lower wall body, resists the damage of an earthquake to the wall body structure, enables the shear wall to recover to an original position after the earthquake by the self-resetting capability of the prestressed tendons and the self weight of the wall body so as to realize the normal use of the post-earthquake building, and can realize the recovery of the structure and the function of the shear wall by the assembly design of the shock absorption structure and the detachable connection of the shock absorption structure with the upper wall body and the lower wall body in a mode of replacing the shock absorption structure or replacing part of elements of the shock absorption structure when the shock absorption structure is damaged by the earthquake.
The upper wall connecting plate and the lower wall connecting plate are detachably connected with the upper wall body and the lower wall body respectively through bolts, a plurality of embedded threaded sleeves are arranged at the positions of each empty slot of the upper wall body and the lower wall body, the bolts penetrate through the upper wall connecting plate and the lower wall connecting plate respectively and are connected with the embedded threaded sleeves arranged on the upper wall body and the lower wall body respectively, and one end, far away from the empty slot, of each embedded threaded sleeve is connected with an anchoring steel bar so as to prevent the embedded threaded sleeves from being pulled out due to overlarge stress under the action of an earthquake.
As a further preferable aspect, the anchor bar is an L-shaped bending long anchor bar.
According to a further aspect of the present invention there is provided a method of installing a shear wall capable of recovering functionality, the method comprising the steps of:
S1, manufacturing and hoisting the upper wall body and the lower wall body, and arranging a plurality of empty slots at the joint of the upper wall body and the lower wall body;
S2, arranging the damping structures in empty slots at the joints of the upper wall body and the lower wall body, enabling an upper wall corrugated plate and a lower wall corrugated plate of each damping structure to be parallel to the wall surfaces of the upper wall body and the lower wall body, and connecting an upper wall connecting plate and a lower wall connecting plate of each damping structure with the upper wall body and the lower wall body respectively;
And S3, installing the prestressed tendons and tensioning the prestressed tendons to control stress values.
In general, compared with the prior art, the above technical solution conceived by the present invention mainly has the following technical advantages:
1. The shear wall provided by the invention can dissipate earthquake energy through the friction action between the upper wall corrugated plate and the lower wall corrugated plate to realize a damping function, can realize damping of the wall body of the shear wall by using the damping structure and connecting the damping structure with the upper wall body and the lower wall body, resists damage of an earthquake to the wall body structure, enables the shear wall to recover to an original position after the earthquake through self-resetting capability of the prestressed tendons and self weight of the wall body to realize normal use of the post-earthquake building, and can realize recovery of the structure and the function of the shear wall through the assembly design of the damping structure and detachable connection of the damping structure with the upper wall body and the lower wall body in a mode of replacing the damping structure or replacing part of elements of the damping structure when the damping structure is damaged by the earthquake action.
2. By using the energy consumption plate and the elastic element, the vibration absorption effect of the vibration absorption structure is further improved through the stretching deformation of the energy consumption plate and the elastic consumption of the elastic element, and in the whole earthquake process, the vibration energy is mainly concentrated at the vibration absorption structure, so that the damage of the wall structure under the earthquake effect can be effectively reduced.
3. As a further improvement of the scheme, the apertures of the bolt holes on the energy dissipation plate, the upper wall corrugated plate, the lower wall corrugated plate and the transition block are larger than those of the high-strength bolts, and elliptical holes are formed in the energy dissipation plate, so that the damping effect is further improved.
4. As a further improvement of the scheme, the assembly and disassembly are convenient through the bolt connection.
Drawings
FIG. 1 is an elevation view of a shear wall of an embodiment of the invention;
FIG. 2 is a side view of FIG. 1 (without upper and lower walls);
FIG. 3 is a schematic view of an upper wall variable friction assembly according to an embodiment of the invention
FIG. 4 is a schematic view of a lower wall friction varying assembly according to an embodiment of the present invention;
fig. 5 is a schematic view of an energy dissipating plate according to an embodiment of the present invention.
The same reference numbers are used throughout the drawings to reference like elements or structures, wherein:
the novel high-strength wall comprises a 1-anchorage device, a 2-prestressed rib, a 3-upper wall variable friction assembly, a 4-energy consumption plate, a 5-lower wall variable friction assembly, a 6-upper wall, a 7-anchored steel bar, an 8-high-strength bolt, a 9-pre-buried threaded sleeve, a 10-lower wall and an 11 elastic element.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
A shear wall of an embodiment of the invention is shown in fig. 1;
As shown in fig. 1, the shear wall capable of recovering functions is vertically arranged, and comprises an upper wall body 6, a lower wall body 10, a damping structure and prestress ribs 2, wherein the upper wall body 6 is connected with the lower wall body 10 up and down, a plurality of empty slots are formed in the connecting positions of the upper wall body 6 and the lower wall body 10, the damping structure is arranged in each empty slot and is connected with the upper wall body 6 and the lower wall body 10 up and down, the prestress ribs 2 are arranged in a plurality of numbers, and each prestress rib 2 penetrates through the upper wall body 6 and the lower wall body 10 and is used for enabling the wall body of the shear wall to reset automatically after an earthquake, so that the service function of the shear wall structure after the earthquake is not affected.
Through the connection of the components, the upper wall 6 and the lower wall 10 are connected into a whole through the damping structure and the prestressed tendons 2, the damping structure absorbs energy during an earthquake to reduce the damage of the earthquake to the shear wall, and the damaged damping structure is replaced after the earthquake and the prestressed tendons 2 automatically reset the shear wall to restore the function of the shear wall.
In this embodiment, two empty slots are disposed at the connection position of the upper wall 6 and the lower wall 10, and are respectively located at two ends of the footing of the upper wall 6, so that after the shock absorbing structures are respectively installed in the two empty slots, the two ends of the upper wall 6 and the lower wall 10 are stressed and balanced, and the two empty slots are convenient for installing the shock absorbing structures, in some embodiments, the number of empty slots can be one or more than three, in some embodiments, the empty slots can be further disposed in the lower wall 10, or the upper wall 6 and the lower wall 10 are respectively slotted and communicated with each other as empty slots, in this embodiment, the prestressed tendons 2 are disposed one and penetrate through the middle parts of the upper wall 6 and the lower wall 10, the ends of the prestressed tendons 2 are fixed by the aid of the prestressed anchors 1, in some embodiments, the prestressed tendons 2 can also be multiple, and in this case, the prestressed tendons 2 can be symmetrically disposed in the middle positions of the wall, so as to alleviate residual displacement errors generated by swinging of the wall.
The shock absorbing structure of the present invention will be described in more detail below.
As a key component of the present invention, as shown in fig. 1 and 2, the shock absorbing structure includes an upper wall variable friction component 3 and a lower wall variable friction component 5;
As shown in fig. 2 and 3, the upper wall variable friction assembly 3 comprises an upper wall connecting plate and an upper wall corrugated plate, wherein when the damping structure is arranged in a hollow groove at the joint of the upper wall 6 and the lower wall 10, the upper wall connecting plate is horizontally arranged and detachably connected with the upper wall 6;
As shown in fig. 2 and 4, the lower wall transformation friction assembly 5 comprises two lower wall corrugated plates and a lower wall connecting plate, wherein the two lower wall corrugated plates are arranged parallel to the wall surface of the shear wall, the surfaces of the two lower wall corrugated plates, which are close to each other, are wavy curved surfaces, the two lower wall corrugated plates are respectively positioned on the outer sides of the two wavy surfaces of the upper wall corrugated plates, the surfaces of the two lower wall corrugated plates, which are close to each other, are respectively attached to the two wavy surfaces of the upper wall corrugated plates, the lower wall connecting plate is horizontally arranged and fixedly connected below the two lower wall corrugated plates and detachably connected with the lower wall 10, and in the embodiment, the lower wall connecting plate is connected to the top surface of the lower wall 10.
The shock absorption structure is designed and connected with the upper wall body 6 and the lower wall body 10, so that the shock absorption of the shear wall body can be realized, particularly, during an earthquake, the shear wall moves vertically under the influence of vertical acceleration and horizontal acceleration of the earthquake and swings horizontally along the thickness direction of the shear wall, and because the upper wall corrugated plate and the two lower wall corrugated plates of the shock absorption structure are arranged to be parallel to the wall surface of the shear wall and are respectively connected with the upper wall body 6 and the lower wall body 10 through the upper wall connecting plate and the lower wall connecting plate, the upper wall corrugated plate and the lower wall corrugated plate move up and down during the earthquake, and the energy during the earthquake can be absorbed through the dislocation friction between the upper wall corrugated plate and the lower wall corrugated plate wavy curved surfaces, so that the shock absorption effect is realized.
The manner in which the shock-absorbing structure is connected to the upper wall 6 and the lower wall 10, and the individual components of the shock-absorbing structure will be described in more detail below.
The upper wall connecting plate and the lower wall connecting plate of the shock-absorbing structure are detachably connected with the upper wall 6 and the lower wall 10 respectively through bolts, as shown in fig. 1 and 2, a plurality of embedded threaded sleeves 9 are arranged at each empty slot of the upper wall 6 and the lower wall 10, the bolts penetrate through the upper wall connecting plate and the lower wall connecting plate respectively and are connected with the embedded threaded sleeves 9 arranged on the upper wall 6 and the lower wall 10 respectively, the upper wall connecting plate and the lower wall connecting plate are rectangular, the upper wall 6 and the lower wall 10 are respectively provided with four embedded threaded sleeves 9 corresponding to four corners of the upper wall connecting plate and the lower wall connecting plate respectively, the number and the positions of the embedded threaded sleeves 9 can be determined according to the shape of the upper wall connecting plate and the lower wall connecting plate, the thickness of the upper wall 6 and the lower wall 10 and other conditions, so that the shock-absorbing structure is connected between the upper wall 6 and the lower wall 10 and is easy to install and detach, one end of each embedded threaded sleeve 9 far from the empty slot is connected with a reinforced bar 7 so as to prevent the embedded threaded sleeves 9 from being stressed excessively and being pulled out under the action of an earthquake anchor, and the reinforced bar is a long-shaped reinforced bar is anchored in an embodiment.
As shown in fig. 2, in the present embodiment, two lower wall corrugated plates of the lower wall variable friction assembly 5 are located below the transition block of the upper wall variable friction assembly 3, and a gap is left between the bottom surface of the transition block and the top surfaces of the two lower wall corrugated plates, so as to prevent the lower wall corrugated plates, the upper wall corrugated plates and the transition block from being deformed by extrusion caused by wall swing during an earthquake.
As shown in fig. 1 and 2, in the present embodiment, the transition block has two side surfaces parallel to the wall surface of the shear wall, the two side surfaces are respectively flush with the surfaces of the two lower wall corrugated plates, which are far away from each other, to form two connecting surfaces, the shock absorbing structure further comprises two energy dissipating plates 4, the two energy dissipating plates 4 are respectively clung to the two connecting surfaces, one end of each energy dissipating plate 4 is detachably connected with the transition block, the other end of each energy dissipating plate 4 is detachably connected with the lower wall corrugated plate, the shock absorbing and energy dissipating capacity of the shock absorbing structure can be improved through the yielding deformation of the energy dissipating plates 4, and the damage of the upper wall variable friction assembly 3 and the lower wall variable friction assembly 5 can be reduced, in the present embodiment, as shown in fig. 5, a plurality of holes are symmetrically formed in the middle of the energy dissipating plates 4, so that the energy dissipating capacity of the energy dissipating plates 4 is improved, in the present embodiment, four oval holes are formed in the middle of the energy dissipating plates 4, and in some embodiments, the open holes of the energy dissipating plates 4 can also be diamond, rectangular or other optimized shapes.
In the embodiment, two first high-strength bolts are arranged, each first high-strength bolt penetrates through the energy dissipation plate 4 and the transition block which are overlapped from outside to inside, two ends of the first high-strength bolts are respectively connected to the outer sides of the two energy dissipation plates 4, the energy dissipation plate 4 and the lower wall corrugated plate are respectively connected to the outer sides of the two energy dissipation plates 4, three rows of second high-strength bolts are arranged from top to bottom, two second high-strength bolts are arranged in each row, each second high-strength bolt penetrates through the energy dissipation plate 4, the lower wall corrugated plate and the upper wall corrugated plate which are overlapped from outside to inside in sequence, and two ends of the second high-strength bolts are respectively connected to the outer sides of the two energy dissipation plates 4.
As shown in fig. 3-5, the energy consumption plate 4, the upper wall corrugated plate, the lower wall corrugated plate and the transition block are all provided with bolt holes at the positions where the first high-strength bolts or the second high-strength bolts pass through, and the aperture of the bolt holes is larger than the outer diameter of the first high-strength bolts or the second high-strength bolts passing through, so that the first high-strength bolts and the second high-strength bolts can slide in the bolt holes along with lifting of the wall body in the earthquake process, and a larger degree of freedom is provided for the dislocation of the upper wall corrugated plate and the lower wall corrugated plate, and the shock absorption effect is improved.
As shown in fig. 2, two ends of each of the first high-strength bolt and the second high-strength bolt are connected to the outer sides of the two energy dissipation plates 4 through elastic elements, the elastic elements are extruded during an earthquake to further improve the damping effect of the damping structure, and in the embodiment, the elastic elements are belleville springs.
The above examples are used to illustrate the shock absorbing structure and the shear wall capable of recovering function of the present invention, and do not limit the scope of protection of the present invention.
The working mechanism of the shock absorbing structure and the shear wall with the restorable function of the invention will be described below.
When an earthquake happens, when the earthquake acting force born by the wall body structure of the shear wall is larger than the initial static friction force between the upper wall corrugated plate and the lower wall corrugated plate of the shock absorption structure, the wall body begins to swing under the earthquake action, and at the moment, energy is consumed through the friction action between the upper wall corrugated plate and the lower wall corrugated plate of the shock absorption structure so as to realize shock absorption of the wall body structure, and the diameters of bolt holes of the energy consumption plate 4, the upper wall corrugated plate, the lower wall corrugated plate and the transition block are larger than the outer diameters of high-strength bolts, so that the high-strength bolts slide in the bolt holes, the upper wall corrugated plate and the lower wall corrugated plate are staggered, the butterfly springs outside the energy consumption plate 4 are extruded, and the energy consumption capacity and the shock resistance of the shock absorption structure are further improved. The wall structure mainly consumes energy through friction action between wave curved surfaces and elasticity of the belleville springs before the high-strength bolts slide to the edges of the bolt holes, and along with the reinforcement of the earthquake action, the high-strength bolts slide to the edges of the bolt holes, the energy consumption plates 4 start to play a role, and earthquake energy is dissipated through stretching deformation.
After the earthquake action is finished, the shear wall is restored to the original position through the self-resetting capability of the prestressed tendons 2 and the self weight of the wall body, so that the normal use of the post-earthquake building is realized. In addition, the prestressing tendons 2 also cooperate to dissipate seismic energy during the seismic action experienced by the building structure.
After the earthquake action is finished, if the damping structure in the shear wall is damaged in the earthquake, the recovery of the structure and the function of the shear wall can be realized by replacing the damping structure or replacing part of elements of the damping structure.
The method for installing the shear wall capable of recovering functions of the invention is described in detail below, and comprises the following steps:
S1, manufacturing and hoisting the upper wall body 6 and the lower wall body 10, and arranging a plurality of empty slots at the joint of the upper wall body 6 and the lower wall body 10;
specifically, in this embodiment, the upper wall 6 and the lower wall 10 of the shear wall are formed by casting in a prefabricated factory; before pouring concrete, a hollow groove for installing a damping structure is required to be reserved, meanwhile, an embedded threaded sleeve 9 connected by an L-shaped long bending steel bar is required to be embedded to a corresponding position, and a bracket is used for fixing, so that the embedded threaded sleeve is prevented from shifting in the pouring and vibrating process;
After the upper wall body 6 and the lower wall body 10 are manufactured, the upper wall body 6 and the lower wall body 10 of the shear wall are hoisted in place, so that the upper wall body 6 and the lower wall body 10 are connected up and down;
The damping structure is manufactured by adopting a linear cutting mode, wherein the upper wall variable friction component 3 and the lower wall variable friction component 5 can be cut by adopting a base material;
For the upper wall variable friction assembly 3, the height of a transition block is 70-100 mm, in the embodiment, 100mm, the two side surfaces of the transition block are flush with the surfaces of the two lower wall corrugated plates of the lower wall variable friction assembly 5, which are far away from each other, the wavy surfaces of the upper wall corrugated plates and the lower wall corrugated plates are formed by cutting parent metal wires so that the wavy surfaces are better attached, two and six bolt holes are respectively formed on the transition block and the upper wall corrugated plates and are used for passing through high-strength bolts, and four holes are formed on an upper wall connecting plate and are used for corresponding to the positions of the pre-buried threaded sleeves 9 in the upper wall plate;
For the lower wall variable friction assembly 5, six bolt holes are formed in two lower wall corrugated plates and are used for corresponding to the six bolt holes in the upper wall connecting plate;
for the energy consumption plate 4, eight bolt holes are formed at the positions corresponding to the transition block and the two lower wall corrugated plates, and four oval strip holes are symmetrically formed in the middle of the plate for improving the energy consumption capacity of the plate;
The diameters of the transition blocks, the upper wall corrugated plates, the lower wall corrugated plates and the bolt holes on the energy consumption plates 4 are 4mm-6mm larger than the outer diameters of the high-strength bolts, so that the high-strength bolts can slide in the holes.
After the manufacturing of each component is completed, the upper wall variable friction component 3, the lower wall variable friction component 5 and the energy consumption plate 4 are assembled to form a damping structure, and the specific flow is as follows:
In order to prevent the upper wall deformation friction assembly 3 and the lower wall deformation friction assembly 5 from extrusion deformation in the earthquake process, a gap of 30mm-40mm is reserved between the bottom surface of a transition piece of the upper wall deformation friction assembly 3 and the top surface of the lower wall corrugated plate of the lower wall deformation friction assembly 5, and the height of the lower wall corrugated plate is smaller than that of the upper wall corrugated plate by cutting the lower wall corrugated plate;
s1b, fixing the energy consumption plates 4 on the outer sides of the two lower wall corrugated plates, penetrating the belleville springs to the end parts of each high-strength bolt, penetrating the high-strength bolts through the bolt holes, arranging the belleville springs on the other side of each high-strength bolt, and screwing the bolts, thereby completing the assembly of the damping structure.
S2, arranging damping structures in empty slots at the joints of the upper wall body 6 and the lower wall body 10, so that an upper wall corrugated plate and a lower wall corrugated plate of each damping structure are parallel to the wall surfaces of the upper wall body 6 and the lower wall body 10, and respectively connecting an upper wall connecting plate and a lower wall connecting plate of each damping structure with the upper wall body 6 and the lower wall body 10;
In order to prevent the error between the replaceable steel member and the pre-embedded hole of the wall body from being adjusted after the prestressed tendon 2 is tensioned, the damping structure is firstly installed, and then the prestressed tendon 2 is installed.
S3, installing the prestressed tendons 2 and tensioning to control stress values;
penetrating the prestressed tendons 2 from the upper wall 6 and the lower wall 10, tensioning the prestressed tendons 2 to a control stress value by adopting tensioning equipment, cutting off the stretched redundant prestressed tendons 2 after tensioning, and finally installing the anchor 1 to finish anchor sealing.
After the earthquake, if the damping structure in the shear wall is destroyed in the earthquake, or if some elements of the damping structure are destroyed in the earthquake, the damping structure may be newly manufactured and reinstalled in the wall of the shear wall in the manner described in step S1 and/or S2.
In summary, according to the assembled shock absorption structure and the shear wall with the restorable function provided with the shock absorption structure, the problem that the structure is damaged under the action of an earthquake can be solved, meanwhile, the shock absorption structure can be replaced, and the shear wall can realize function restoration after the action of the earthquake, so that the assembled shock absorption structure is particularly suitable for the application occasion of earthquake resistance of a wall body structure.
It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the invention and is not intended to limit the invention, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (6)
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| CN109898701A (en) * | 2019-04-17 | 2019-06-18 | 商洛学院 | A kind of shear wall corner component being conveniently replaceable |
| CN111749352A (en) * | 2020-07-31 | 2020-10-09 | 西安建筑科技大学 | An energy dissipation connection device for prefabricated shear walls |
| CN111749353A (en) * | 2020-07-31 | 2020-10-09 | 西安建筑科技大学 | A replaceable energy-consuming connection device for self-resetting shear walls |
| CN216665181U (en) * | 2021-12-31 | 2022-06-03 | 中铁二十局集团有限公司 | Assembled shock-absorbing structure and shear wall capable of restoring functions |
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| US5819484A (en) * | 1995-07-28 | 1998-10-13 | Kar; Ramapada | Building structure with friction based supplementary damping in its bracing system for dissipating seismic energy |
| CN215054221U (en) * | 2021-05-08 | 2021-12-07 | 广州市山鼎建筑设计咨询有限公司 | Novel energy dissipation wall shock-absorbing structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109898701A (en) * | 2019-04-17 | 2019-06-18 | 商洛学院 | A kind of shear wall corner component being conveniently replaceable |
| CN111749352A (en) * | 2020-07-31 | 2020-10-09 | 西安建筑科技大学 | An energy dissipation connection device for prefabricated shear walls |
| CN111749353A (en) * | 2020-07-31 | 2020-10-09 | 西安建筑科技大学 | A replaceable energy-consuming connection device for self-resetting shear walls |
| CN216665181U (en) * | 2021-12-31 | 2022-06-03 | 中铁二十局集团有限公司 | Assembled shock-absorbing structure and shear wall capable of restoring functions |
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