CN113605559B - Assembled self-resetting reinforced concrete shear wall - Google Patents
Assembled self-resetting reinforced concrete shear wall Download PDFInfo
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- CN113605559B CN113605559B CN202111034164.2A CN202111034164A CN113605559B CN 113605559 B CN113605559 B CN 113605559B CN 202111034164 A CN202111034164 A CN 202111034164A CN 113605559 B CN113605559 B CN 113605559B
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- 239000011150 reinforced concrete Substances 0.000 title claims abstract description 55
- 230000009471 action Effects 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 4
- 238000010276 construction Methods 0.000 description 9
- 238000005452 bending Methods 0.000 description 5
- 238000003912 environmental pollution Methods 0.000 description 4
- 238000010008 shearing Methods 0.000 description 4
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000011265 semifinished product Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
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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
-
- 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
- E04B1/38—Connections for building structures in general
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
-
- 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
- E04B1/38—Connections for building structures in general
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
- E04B1/4157—Longitudinally-externally threaded elements extending from the concrete or masonry, e.g. anchoring bolt with embedded head
- E04B1/4164—Longitudinally-externally threaded elements extending from the concrete or masonry, e.g. anchoring bolt with embedded head with an adjustment sleeve
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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
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
-
- 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
- E04B1/38—Connections for building structures in general
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
- E04B2001/4192—Connecting devices specially adapted for embedding in concrete or masonry attached to concrete reinforcing elements, e.g. rods or wires
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Environmental & Geological Engineering (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The invention discloses an assembled self-resetting reinforced concrete shear wall, which comprises a prefabricated wall body, a resetting system and a friction system, wherein the prefabricated wall body is a factory prefabricated part, and a left wall foot and a right wall foot of the prefabricated wall body are respectively reserved with a corner-lacking space which is communicated front and back; the reset systems are respectively arranged in unfilled corner spaces on the left side and the right side of the prefabricated wall body, and the upper ends and the lower ends of the two reset systems are respectively and correspondingly connected with the prefabricated wall body and the support; the two resetting systems are used for assisting the assembled self-resetting reinforced concrete shear wall to recover to the position before deformation; the friction systems are respectively arranged at the front surface and the rear surface of the lower part of the prefabricated wall body and are respectively connected with the prefabricated wall body and the support; two friction systems are used to dissipate energy when the load beam applies a load. The assembled self-resetting reinforced concrete shear wall has the advantages of high anti-seismic toughness, low damage after earthquake, high assembly efficiency and the like.
Description
Technical Field
The invention relates to the technical field of assembled reinforced concrete shear wall structures, in particular to an assembled self-resetting reinforced concrete shear wall.
Background
The reinforced concrete shear wall has the characteristics of high strength and high lateral stiffness resistance, is widely used as a lateral force resistant member in high-rise and super high-rise structures, and is beneficial to improving the earthquake resistance of building structures. Under the action of earthquake, the traditional reinforced concrete shear wall mainly dissipates earthquake energy through plastic deformation of the components, bending damage or shearing damage is easily caused at the bottoms of the walls of the shear wall, the ductility of the components is poor, and finally the whole structure cannot be repaired to lose the use function, so that huge economic loss is caused. In order to improve the bearing capacity and the bending resistance of the shear wall and improve the anti-seismic performance of the shear wall structure, the mode of arranging section steel, steel pipes and the like in the edge constraint area of the shear wall to strengthen the edge constraint area of the shear wall or arranging section steel or a hidden support and the like in the wall is generally adopted at present. However, the reinforced shear wall still has the problems of serious foot damage and large post-earthquake residual deformation after earthquake, so that the building structure is still difficult to repair after earthquake, the repair cost is high, and the anti-seismic toughness of the building structure is not improved.
At present, in reinforced concrete shear walls, the assembly technology for connecting by adopting grouting sleeves is most widely applied, the assembled reinforced concrete shear walls are similar to cast-in-situ reinforced concrete shear walls in form, and have obvious residual deformation after earthquake, and the earthquake resistance toughness is still poor.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, one purpose of the invention is to provide an assembled self-resetting reinforced concrete shear wall which has high anti-seismic toughness, low damage after earthquake, high assembly efficiency and small environmental pollution.
According to an embodiment of the invention, an assembled self-resetting reinforced concrete shear wall comprises:
The prefabricated wall body is a factory prefabricated part, left and right wall feet of the prefabricated wall body are reserved with corner-lacking spaces which are communicated front and back respectively, the prefabricated wall body is supported on a support in the up-down direction, and the top of the prefabricated wall body is connected with a loading beam for applying load;
The two reset systems are respectively arranged in the unfilled corner spaces on the left side and the right side of the prefabricated wall body, and the upper ends and the lower ends of the two reset systems are respectively and correspondingly connected with the prefabricated wall body and the support; the two resetting systems are used for assisting the assembled self-resetting reinforced concrete shear wall to recover to the position before deformation;
The friction systems are respectively arranged at the front surface and the rear surface of the lower part of the prefabricated wall body and are respectively connected with the prefabricated wall body and the support; the two friction systems are used to dissipate energy when the load beam applies a load.
The fabricated self-resetting reinforced concrete shear wall provided by the embodiment of the invention has the following advantages: firstly, the prefabricated wall body, the reset system and the friction system in the assembled self-reset reinforced concrete shear wall can resist axial force, shearing force and bending moment together under the action of vertical load and horizontal load, the reset system can provide restoring force after relative movement, residual deformation after earthquake of the assembled self-reset reinforced concrete shear wall can be effectively reduced, load energy can be effectively dissipated after relative movement by the friction system, plastic damage of the prefabricated wall body is reduced, and the use function of the assembled self-reset reinforced concrete shear wall after earthquake is facilitated to be quickly restored. And secondly, all parts of the assembled self-resetting reinforced concrete shear wall, such as the prefabricated wall body, the resetting system and the friction system, can be separately processed, and finally are assembled on site, so that the construction quality can be ensured, the construction efficiency can be improved, and the environmental pollution can be reduced.
According to one embodiment of the invention, each of the reset systems comprises an outer tube, an inner tube and a disc spring; wherein,
The outer pipe comprises a lower outer pipe, an upper outer pipe and an upper connecting plate which are sequentially connected in the up-down direction, wherein the inner diameter of the lower outer pipe is larger than that of the upper outer pipe, so that an upper retaining shoulder is formed at the connecting part between the inner pipe wall of the lower outer pipe and the inner pipe wall of the upper outer pipe, a lower end plate is arranged at the bottom end of the lower outer pipe, an opening is formed in the lower end plate, the upper connecting plate is fixed with the upper end of the upper outer pipe, and the upper connecting plate is connected with the prefabricated wall;
The inner pipe comprises an inner pipe body, an upper baffle, a lower baffle and a lower connecting plate, wherein the inner pipe body comprises an upper inner pipe and a lower inner pipe which are connected in the up-down direction, the upper inner pipe is positioned in the outer pipe, the lower inner pipe is positioned outside the outer pipe and below the outer pipe, the upper baffle and the lower baffle are fixed at the upper end and the lower end of the upper inner pipe at intervals in the up-down direction, the upper baffle and the lower baffle are movably sleeved on the upper inner pipe and are positioned between the upper baffle and the lower baffle, the upper baffle is abutted on the lower side of the upper baffle and on the upper baffle shoulder, the lower baffle is abutted on the upper side of the lower baffle and on the lower end plate, the disc spring is sleeved on the upper inner pipe and is positioned between the upper baffle and the lower baffle, the upper baffle is positioned in the upper outer pipe, and the lower baffle is positioned in the opening; the lower connecting plate is fixed with the lower end of the lower section inner tube, and is connected with the support;
under the applied load action of the loading beam, the inner tube and the outer tube generate relative motion, the disc springs are compressed, and the disc springs provide restoring force for assisting the assembled self-restoring reinforced concrete shear wall to restore to the position before deformation after loading Liang Xiezai.
According to a further embodiment of the invention, the disc spring is conical disc-shaped.
According to a still further embodiment of the present invention, the disc springs have a plurality of disc springs, and the plurality of disc springs are arranged in a stacked and abutted manner.
According to a further embodiment of the invention, embedded parts are respectively arranged on the prefabricated wall body and the support, and the upper connecting plate and the embedded parts of the prefabricated wall body and the lower connecting plate and the embedded parts of the support are respectively connected and fixed through first bolts.
According to still further embodiments of the present invention, the embedded part includes an embedded plate and an embedded threaded sleeve, the embedded plate is provided with a first bolt hole corresponding to the embedded threaded sleeve, the upper connecting plate and the lower connecting plate are respectively provided with a second bolt hole, and the upper connecting plate and the embedded part of the wall body and the lower connecting plate and the embedded part of the support seat are respectively screwed in the corresponding embedded threaded sleeve through the first bolt passing through the corresponding second bolt hole and the first bolt hole, so that the upper connecting plate and the wall body are respectively connected and fixed, and the lower connecting plate and the support seat are respectively connected and fixed.
According to some embodiments of the invention, the front surface and the rear surface of the lower part of the prefabricated wall body are respectively embedded with wall body embedded screws, and the front side surface and the rear side surface of the support are respectively embedded with support embedded screws;
Each friction system comprises an upper connecting plate, a lower connecting plate, a first friction plate and a second friction plate, wherein the first friction plate and the second friction plate are positioned between the upper connecting plate and the lower connecting plate, a first groove is formed in the upper connecting plate, and the first friction plate is stuck in the first groove to form a whole; a third bolt hole is formed in the part of the upper connecting plate except the first groove, and a first penetrating friction bolt hole is formed in the first groove part and the first friction plate of the upper connecting plate; the lower connecting plate is provided with a second groove, and the second friction plate is stuck in the second groove to form a whole; a fourth bolt hole is formed in the part of the lower connecting plate except the second groove, and a second penetrating friction bolt hole is formed in the second groove part and the second friction plate of the lower connecting plate;
A part of the wall body embedded screw on the lower front surface of the prefabricated wall body passes through the third bolt hole on one friction system to fix the corresponding upper connecting plate on the prefabricated wall body, and the rest of the wall body embedded screw on the lower front surface of the prefabricated wall body passes through the first friction bolt hole and the second friction bolt hole on one friction system to fix the corresponding upper connecting plate, the first friction plate, the second friction plate and the lower connecting plate together; the embedded screw rod of the support on the front side surface of the support passes through the fourth bolt hole on one friction system to fix the corresponding lower connecting plate on the support;
A part of the wall body embedded screw on the lower rear surface of the prefabricated wall body passes through the third bolt hole on the other friction system to fix the corresponding upper connecting plate on the prefabricated wall body, and the rest of the wall body embedded screw on the lower rear surface of the prefabricated wall body passes through the first friction bolt hole and the second friction bolt hole on the other friction system to fix the corresponding upper connecting plate, the first friction plate, the second friction plate and the lower connecting plate together; the embedded screw rod of the support on the rear side surface of the support passes through the fourth bolt hole on the other friction system to fix the corresponding lower connecting plate on the support.
According to some embodiments of the invention, the second friction bolt hole is an elongated hole extending in an up-down direction.
According to some embodiments of the invention, the upper and lower connection plates are each made of steel, and the first and second friction plates are each made of an asbestos-free composite material.
According to some embodiments of the invention, the upper web is located inboard of the lower web.
According to some embodiments of the invention, when the fabricated self-resetting reinforced concrete shear wall is applied to a high-rise structure, the prefabricated walls of different floors are respectively processed, and the prefabricated walls, the resetting system and the friction system of different floors are assembled on site.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
Fig. 1 is a schematic structural view of an assembled self-resetting reinforced concrete shear wall according to an embodiment of the present invention.
Fig. 2 is a schematic partial structural view of an assembled self-resetting reinforced concrete shear wall according to an embodiment of the present invention.
Fig. 3 is a schematic structural view of a resetting system in an assembled self-resetting reinforced concrete shear wall according to an embodiment of the invention.
Fig. 4 is a schematic structural view of a friction system in an assembled self-resetting reinforced concrete shear wall according to an embodiment of the present invention.
Fig. 5 is an exploded schematic view of a friction system in an assembled self-resetting reinforced concrete shear wall according to an embodiment of the present invention.
Fig. 6 is a schematic illustration of the connection between fabricated self-resetting reinforced concrete shear walls according to an embodiment of the present invention.
Reference numerals:
assembled self-resetting reinforced concrete shear wall 1000
Prefabricated wall 1
Reset system 2
Outer tube 201
Lower end plate 2014 of upper connecting plate 2013 of upper outer pipe 2012 of lower outer pipe 2011
Upper stop shoulder 2015
Inner tube 202
An upper stopper 2022 of the inner tube body 2021, an upper baffle 2023 and a lower baffle 2024
Lower stopper 2025 lower connecting plate 2026 upper inner tube 2027 lower inner tube 2028
Embedded part 203
Pre-buried plate 2031 pre-buried threaded sleeve 2032
First bolt 204 disc spring 205
Friction system 3
Wall embedded screw 301 and upper connecting plate 303 of embedded screw 302 of support
First groove 3031 third bolt hole 3032 first friction bolt hole 3033
Lower connecting plate 304
Second groove 3041 fourth bolt hole 3042 second friction bolt hole 3043
First friction plate 305 and second friction plate 306
Support 4
Load beam 5
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
An assembled self-resetting reinforced concrete shear wall 1000 according to an embodiment of the present invention is described below with reference to fig. 1 to 6.
As shown in fig. 1 to 6, the fabricated self-resetting reinforced concrete shear wall 1000 according to the embodiment of the present invention includes a prefabricated wall 1, a resetting system 2 and a friction system 3. The prefabricated wall body 1 is a factory prefabricated part, a left corner foot and a right corner foot of the prefabricated wall body 1 are reserved with corner-lacking spaces which are communicated front and back respectively, the prefabricated wall body 1 is supported on a support 4 in the up-down direction, and the top of the prefabricated wall body 1 is connected with a loading beam 5 for applying load; the two reset systems 2 are respectively arranged in the unfilled corner spaces on the left side and the right side of the prefabricated wall body 1, and the upper ends and the lower ends of the two reset systems 2 are respectively and correspondingly connected with the prefabricated wall body 1 and the support 4; the two reset systems 2 are used for assisting the assembled self-reset reinforced concrete shear wall 1000 to recover to the position before deformation; the two friction systems 3 are respectively arranged at the front surface and the rear surface of the lower part of the prefabricated wall body 1 and are respectively connected with the prefabricated wall body 1 and the support 4; the two friction systems 3 are used to dissipate energy when the load beam 5 is loaded.
Specifically, the prefabricated wall body 1 is a factory prefabricated part, the prefabricated wall body 1 is formed by pouring concrete and reinforcing steel bars, the reinforcing steel bar requirement of the prefabricated wall body is similar to that of a common reinforced concrete shear wall, and the grades of the concrete and the reinforcing steel bars are determined according to the design requirement. The adoption of the factory prefabricated member is beneficial to improving the construction efficiency and reducing the pollution of the construction process to the environment, and is easy for standardized production and improving the product quality.
The left wall foot and the right wall foot of the prefabricated wall body 1 are respectively reserved with corner-lacking spaces which are penetrated front and back and are respectively used for accommodating the reset system 2, a space which is reasonably and conveniently installed is provided for the reset system 2, the prefabricated wall body 1 is supported on the support 4 in the up-down direction, namely the support 4 plays a role in supporting the prefabricated wall body 1, the top of the prefabricated wall body 1 is connected with the loading beam 5 for applying load, the load is applied through the loading beam 5, and the load can comprise vertical load and horizontal load.
The two reset systems 2 are respectively arranged in the unfilled corner spaces on the left side and the right side of the prefabricated wall body 1, the upper ends and the lower ends of the two reset systems 2 are respectively and correspondingly connected with the prefabricated wall body 1 and the support 4, and the two reset systems 2 are used for assisting the assembled self-reset reinforced concrete shear wall 1000 to recover to the position before deformation. It can be understood that when the prefabricated wall 1 is subjected to load, the assembled self-resetting reinforced concrete shear wall 1000 deforms, meanwhile, the two resetting systems 2 generate restoring force, and after the load applied on the prefabricated wall 1 is unloaded, the resetting systems 2 can enable the assembled self-resetting reinforced concrete shear wall 1000 to restore to the position before deformation through the restoring force. That is, by providing two reset systems 2, the fabricated self-reset reinforced concrete shear wall 1000 can have stable post-yielding rigidity, post-earthquake residual deformation of the structure can be effectively reduced, and the anti-earthquake toughness of the structure is improved.
The two friction systems 3 are respectively arranged at the front surface and the rear surface of the lower part of the prefabricated wall body 1 and are respectively connected with the prefabricated wall body 1 and the support 4; the two friction systems 3 are used for dissipating energy when the loading beam 5 applies load, so that the plastic damage of the prefabricated wall body 1 is reduced, and the anti-seismic performance of the structure is improved.
The fabricated self-resetting reinforced concrete shear wall 1000 according to the embodiment of the invention has the following advantages: firstly, the prefabricated wall body 1, the reset system 2 and the friction system 3 in the assembled self-reset reinforced concrete shear wall 1000 can resist axial force, shearing force and bending moment together under the action of vertical load and horizontal load, the reset system 2 can provide restoring force after relative movement, post-earthquake residual deformation of the assembled self-reset reinforced concrete shear wall 1000 can be effectively reduced, the friction system 3 can effectively dissipate energy after relative movement, plastic damage of the prefabricated wall body is reduced, and thus the use function of the assembled self-reset reinforced concrete shear wall 1000 after an earthquake can be quickly restored. Secondly, all parts of the fabricated self-resetting reinforced concrete shear wall 1000, such as the prefabricated wall body 1, the resetting system 2 and the friction system 3, can be separately processed, and finally are assembled on site, so that the construction quality can be ensured, the construction efficiency can be improved, and the environmental pollution can be reduced.
According to one embodiment of the present invention, as shown in fig. 2 to 3, each reset system 2 includes an outer tube 201, an inner tube 202, and a disc spring 205; the outer pipe 201 includes a lower outer pipe 2011, an upper outer pipe 2012 and an upper connecting plate 2013 connected in turn in the up-down direction, wherein the inner diameter of the lower outer pipe 2011 is larger than the inner diameter of the upper outer pipe 2012, so that a connection part between the inner pipe wall of the lower outer pipe 2011 and the inner pipe wall of the upper outer pipe 2012 forms an upper retaining shoulder 2015, a lower end plate 2014 is arranged at the bottom end of the lower outer pipe 2011, an opening is arranged on the lower end plate 2014, the upper connecting plate 2013 is fixed with the upper end of the upper outer pipe 2012, and the upper connecting plate 2013 is connected with the prefabricated wall 1 (i.e. the upper connecting plate 2013 connects the outer pipe 201 on the prefabricated wall 1); the inner tube 202 includes an inner tube body 2021, an upper stopper 2022, an upper stopper 2023, a lower stopper 2024, a lower stopper 2025, and a lower connecting plate 2026, the inner tube body 2021 includes an upper-stage inner tube 2027 and a lower-stage inner tube 2028 connected in the up-down direction, the upper-stage inner tube 2027 is located inside the outer tube 201, and the lower-stage inner tube 2028 is located outside the outer tube 201 and below the outer tube 201; the upper stopper 2022 and the lower stopper 2025 are fixed at intervals in the up-down direction at the upper end and the lower end of the upper inner tube 2027, the upper stopper 2023 and the lower stopper 2024 are movably sleeved on the upper inner tube 2027 and positioned between the upper stopper 2022 and the lower stopper 2025, the upper stopper 2023 is abutted on the lower side of the upper stopper 2022 and the upper stopper shoulder 2015, the lower stopper 2024 is abutted on the upper side of the lower stopper 2025 and the lower end plate 2014, the disc spring 205 is sleeved on the upper inner tube 2027 and positioned between the upper stopper 2023 and the lower stopper 2024, the upper stopper 2022 is positioned in the upper outer tube 2012, and the lower stopper 2025 is positioned in the opening; the lower connecting plate 2026 is fixed to the lower end of the lower inner tube 2028, and the lower connecting plate 2026 is connected to the support 4.
Under the load applied by the load beam 5, the inner tube 202 and the outer tube 201 move relatively, the disc springs 205 are compressed, and the disc springs 205 provide restoring force for assisting the assembled self-restoring reinforced concrete shear wall 1000 to the position before deformation after the load beam 5 is unloaded.
When the load beam 5 applies load, the load born by the prefabricated wall body 1 is transferred to the outer pipe 201 through the upper connecting plate 2013, so that the outer pipe 201 and the inner pipe 202 generate relative motion, the upper retaining shoulder 2015 on the outer pipe 201 can transfer the load to the disc spring 205 through the upper retaining plate 2023, the disc spring 205 can be compressed in the outer pipe 201 to generate deformation due to the limiting effect of the lower retaining plate 2024, and the disc spring 205 generates restoring force when being compressed; when the load of the loading beam 5 to the prefabricated wall body 1 is unloaded, the disc springs 205 provide restoring force, so that the assembled self-resetting reinforced concrete shear wall 1000 can be assisted to restore to the position before deformation, residual displacement of the prefabricated wall body 1 after earthquake is reduced, and the shock resistance of the prefabricated wall body 1 is improved. In addition, the inner tube 202 and the outer tube 201 of the reset system 2 can resist horizontal shearing forces, and the vertical restoring force of the reset system 2 can resist bending moments.
When the resetting system 2 is assembled, the upper inner tube 2027 and the lower inner tube 2028 are integrally designed, the upper stop block 2022 is welded on the upper inner tube 2027, the upper stop block 2023 is sleeved, the disc spring 205 is sleeved on the upper inner tube 2027, the lower stop block 2024 is sleeved on the upper inner tube 2027, the combined disc spring 205 is pre-pressed, the lower stop block 2025 is welded on the upper inner tube 2027 to fix the pre-pressed position of the disc spring 205, and finally the lower connecting plate 2026 is welded at the lower end of the lower inner tube 2028, so that the assembly of the semi-finished product of the inner tube 202 is completed. Then, the outer tube 201 and the upper connecting plate 2013 are welded first, then the lower outer tube 2011 is directly sleeved on the semi-finished product of the inner tube 202, the lower outer tube 2011 is sleeved on the upper inner tube 2027, and finally a plate is installed on an opening of the lower outer tube 2011 for sleeving the semi-finished product of the inner tube 202, and the plate is used for shielding the disc spring 205, so that impurities are prevented from entering the lower outer tube 2011 to influence the normal operation of the disc spring 205 while the appearance is attractive. The reset system 2 is assembled so far, and thus, the reset system 2 is convenient to assemble.
According to a further embodiment of the present invention, as shown in fig. 2 to 3, the disc spring 205 has a conical disc shape, which can provide an effective restoring force.
According to still further embodiments of the present invention, as shown in fig. 2-3, the disc springs 205 have a plurality of disc springs 205, and the plurality of disc springs 205 are arranged in a stacked and abutted arrangement to provide an effective restoring force. It should be noted that, the disc spring 205 is provided with a plurality of disc springs and is pre-pressed during assembly, so that the inner tube 202 and the outer tube 201 can only perform relative movement under the action of a sufficiently large external load; the folding and the involution are two different combination modes between the disc springs 205, the folding arrangement can increase the restoring force of the resetting system 2, the involution arrangement can increase the deformability of the resetting system 2, and the arrangement mode can be designed according to requirements.
According to a further embodiment of the present invention, as shown in fig. 2, embedded parts 203 are respectively disposed on the prefabricated wall 1 and the support 4, and the upper connection plate 2013 and the embedded parts 203 of the prefabricated wall 1 and the lower connection plate 2026 and the embedded parts 203 of the support 4 are respectively connected and fixed by the first bolts 204, so that the assembly efficiency can be improved, and the connection is stable and reliable.
According to still a further embodiment of the present invention, as shown in fig. 2, the embedded part 203 includes an embedded plate 2031 and an embedded threaded sleeve 2032, the embedded plate 2031 is provided with a first bolt hole corresponding to the embedded threaded sleeve 2032, the upper connecting plate 2013 and the lower connecting plate 2026 are respectively provided with a second bolt hole, and the upper connecting plate 2013 and the embedded part 203 of the wall body and the lower connecting plate 2026 and the embedded part 203 of the support 4 are respectively screwed in the corresponding embedded threaded sleeve 2032 through the first bolt 204 and the corresponding second bolt hole and the first bolt hole, so that the upper connecting plate 2013 and the wall body are respectively connected and fixed, and the lower connecting plate 2026 and the support 4 are respectively connected and fixed. Thus, a more stable and reliable connection effect can be obtained, and the connection and fixation process is more convenient.
According to some embodiments of the present invention, as shown in fig. 1, wall embedded screws 301 are embedded in the front surface and the rear surface of the lower part of the prefabricated wall 1, and support embedded screws 302 are embedded in the front side and the rear side of the support 4; as shown in fig. 4 to 5, each friction system 3 includes an upper connection plate 303, a lower connection plate 304, and a first friction plate 305 and a second friction plate 306 located between the upper connection plate 303 and the lower connection plate 304, wherein a first groove 3031 is provided on the upper connection plate 303, and the first friction plate 305 is adhered in the first groove 3031 to form a whole; the upper connection plate 303 is provided with a third bolt hole 3032 at a position except the first groove 3031, and the upper connection plate 303 is provided with a first friction bolt hole 3033 penetrating through the first groove 3031 and the first friction plate 305; the lower connecting plate 304 is provided with a second groove 3041, and the second friction plate 306 is adhered in the second groove 3041 to form a whole; the lower connecting plate 304 has fourth bolt holes 3042 formed in a portion thereof other than the second groove 3041, and the lower connecting plate 304 has second friction bolt holes 3043 formed therethrough in the portion of the second groove 3041 and the second friction plate 306. Alternatively, the upper and lower connection plates 303, 304 may be steel plates, and the first and second friction plates 305, 306 serve to increase the friction coefficient between the upper and lower connection plates 303, 304.
A part of wall embedded screws 301 on the front side surface of the bottom of the prefabricated wall 1 pass through a third bolt hole 3032 on one friction system 3 to fix a corresponding upper connecting plate 303 on the prefabricated wall 1, so that the upper connecting plate 303 can be driven to move when the prefabricated wall 1 moves; the support embedded screw 302 on the front side of the support 4 passes through a fourth bolt hole 3042 on one friction system 3 to fix the corresponding lower connecting plate 304 on the support 4, so that the lower connecting plate 304 can be driven to move when the support 4 moves; the rest of the wall body embedded screws 301 on the front side surface of the bottom of the prefabricated wall body 1 pass through the first friction bolt holes 3033 and the second friction bolt holes 3043 on one friction system 3 to fix the corresponding upper connecting plate 303, the first friction plate 305, the second friction plate 306 and the lower connecting plate 304 together, so that the prefabricated wall body 1 and the support 4 can be connected and fixed when no relative movement occurs between the prefabricated wall body 1 and the support 4, and when the relative movement occurs between the prefabricated wall body 1 and the support 4, the first friction plate 305 and the upper connecting plate 303 are stuck and fixed into a whole, and the second friction plate 306 and the lower connecting plate 304 are stuck and fixed into a whole, so that the relative movement occurs between the second friction plate 306 and the first friction plate 305 along with the relative movement between the prefabricated wall body 1 and the support 4, and load energy or earthquake energy can be effectively dissipated through the relative movement between the first friction plate 305 and the second friction plate 306.
A part of wall embedded screws 301 on the bottom rear side surface of the prefabricated wall 1 pass through a third bolt hole 3032 on the other friction system 3 to fix a corresponding upper connecting plate 303 on the prefabricated wall 1, so that the upper connecting plate 303 can be driven to move when the prefabricated wall 1 moves; the support embedded screw 302 on the rear side of the support 4 passes through the fourth bolt hole 3042 on the other friction system 3 to fix the corresponding lower connecting plate 304 on the support 4, so that the lower connecting plate 304 can be driven to move when the support 4 moves; the rest of the wall body embedded screws 301 on the lower rear surface of the prefabricated wall body 1 pass through the first friction bolt holes 3033 and the second friction bolt holes 3043 on the other friction system 3 to fix the corresponding upper connecting plate 303, the first friction plate 305, the second friction plate 306 and the lower connecting plate 304 together, so that the function of connecting and fixing the prefabricated wall body 1 and the support 4 can be realized when no relative movement occurs between the prefabricated wall body 1 and the support 4, and when the relative movement occurs between the prefabricated wall body 1 and the support 4, the first friction plate 305 and the upper connecting plate 303 are stuck and fixed into a whole, and the second friction plate 306 and the lower connecting plate 304 are stuck and fixed into a whole, so that the relative movement occurs between the second friction plate 306 and the first friction plate 305 along with the relative movement between the prefabricated wall body 1 and the support 4, and load energy or earthquake energy can be effectively dissipated through the relative movement between the first friction plate 305 and the second friction plate 306.
It should be noted that, when the upper connecting plate 303, the first friction plate 305, the second friction plate 306 and the lower connecting plate 304 are fixed together, the wall embedded screw 301 needs to be screwed on the wall embedded screw 301 by using a nut after penetrating through the first friction bolt hole 3033 and the second friction bolt hole 3043, so that the nut applies a normal stress perpendicular to the upper connecting plate 303 and the lower connecting plate 304, and the calculation formula of the friction force is f=μf n (μ is a friction coefficient, and F n is a normal stress), so that the applied normal stress can generate a larger friction force when the integral structure formed by the first friction plate 305 and the upper connecting plate 303 and the integral structure formed by the second friction plate 306 and the lower connecting plate 304 relatively slide, and under the action of an external load, the upper connecting plate 303 and the lower connecting plate 304 are relatively moved to drive the first friction plate 305 and the second friction plate 306 to move to dissipate energy, thereby achieving the purpose of reducing the plastic damage of the prefabricated wall 1.
According to some embodiments of the present invention, as shown in fig. 4 to 5, the second friction bolt hole 3043 is an elongated hole extending in the up-down direction. In this way, under the action of external load, the upper connecting plate 303 and the lower connecting plate 304 can move relatively along the strip-shaped holes to drive the first friction plate 305 and the first friction plate 305 to move, so as to play a role in dissipating energy.
According to some embodiments of the invention, the upper and lower connection plates 303, 304 are each made of steel, and the first and second friction plates 305, 306 are each made of an asbestos-free composite material. Thus, the service life of the friction system 3 is longer, the use effect is better, and meanwhile, the damage to human bodies and the environment can be reduced by adopting the asbestos-free composite material.
According to some embodiments of the invention, the upper connection plate 303 is located inside the lower connection plate 304.
According to some embodiments of the present invention, when the fabricated self-resetting reinforced concrete shear wall 1000 is applied to a high-rise structure, the prefabricated wall bodies 1 of different floors are respectively processed, and the prefabricated wall bodies 1, the resetting system 2 and the friction system 3 of different floors are assembled on site. As shown in fig. 6, different prefabricated wall bodies 1 are connected together through a reset system 2 and a friction system 3 in sequence, so that the construction efficiency and the construction quality can be improved well, the environmental pollution caused by the construction process is reduced, and the sustainable development of a green building is facilitated.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
Claims (7)
1. The utility model provides an assembled self-resetting reinforced concrete shear force wall which characterized in that includes:
The prefabricated wall body is a factory prefabricated part, left and right wall feet of the prefabricated wall body are reserved with corner-lacking spaces which are communicated front and back respectively, the prefabricated wall body is supported on a support in the up-down direction, and the top of the prefabricated wall body is connected with a loading beam for applying load;
The two reset systems are respectively arranged in the unfilled corner spaces on the left side and the right side of the prefabricated wall body, and the upper ends and the lower ends of the two reset systems are respectively and correspondingly connected with the prefabricated wall body and the support; the two resetting systems are used for assisting the assembled self-resetting reinforced concrete shear wall to recover to the position before deformation;
the friction systems are respectively arranged at the front surface and the rear surface of the lower part of the prefabricated wall body and are respectively connected with the prefabricated wall body and the support; two of the friction systems are used for dissipating energy when the load beam applies load;
Each reset system comprises an outer tube, an inner tube and a disc spring; wherein,
The outer pipe comprises a lower outer pipe, an upper outer pipe and an upper connecting plate which are sequentially connected in the up-down direction, wherein the inner diameter of the lower outer pipe is larger than that of the upper outer pipe, so that an upper retaining shoulder is formed at the connecting part between the inner pipe wall of the lower outer pipe and the inner pipe wall of the upper outer pipe, a lower end plate is arranged at the bottom end of the lower outer pipe, an opening is formed in the lower end plate, the upper connecting plate is fixed with the upper end of the upper outer pipe, and the upper connecting plate is connected with the prefabricated wall;
The inner pipe comprises an inner pipe body, an upper stop block, an upper baffle, a lower stop block and a lower connecting plate, wherein the inner pipe body comprises an upper section inner pipe and a lower section inner pipe which are connected in the up-down direction, the upper section inner pipe is positioned in the outer pipe, and the lower section inner pipe is positioned outside the outer pipe and below the outer pipe; the upper baffle and the lower baffle are fixed at the upper end and the lower end of the upper inner pipe at intervals in the vertical direction, the upper baffle and the lower baffle are movably sleeved on the upper inner pipe and positioned between the upper baffle and the lower baffle, the upper baffle is abutted on the lower side of the upper baffle and the upper baffle shoulder, the lower baffle is abutted on the upper side of the lower baffle and the lower end plate, the disc spring is sleeved on the upper inner pipe and positioned between the upper baffle and the lower baffle, the upper baffle is positioned in the upper outer pipe, and the lower baffle is positioned in the opening; the lower connecting plate is fixed with the lower end of the lower section inner tube, and is connected with the support;
Under the load action of the loading beam, the inner pipe and the outer pipe generate relative motion, the disc springs are compressed, and the disc springs provide restoring force for assisting the assembled self-resetting reinforced concrete shear wall to restore to the position before deformation after loading Liang Xiezai;
The prefabricated wall body and the support are respectively provided with an embedded part, and the upper connecting plate and the embedded part of the prefabricated wall body and the lower connecting plate and the embedded part of the support are respectively connected and fixed through first bolts;
The embedded parts comprise embedded plates and embedded threaded sleeves, first bolt holes corresponding to the embedded threaded sleeves are formed in the embedded plates, second bolt holes are formed in the upper connecting plate and the lower connecting plate respectively, and the upper connecting plate and the embedded parts of the wall body and the lower connecting plate and the embedded parts of the support seat respectively penetrate through the corresponding second bolt holes and the first bolt holes through the first bolts and are screwed in the corresponding embedded threaded sleeves, so that the upper connecting plate and the wall body are connected and fixed, and the lower connecting plate and the support seat are connected and fixed respectively;
Wall embedded screws are respectively embedded in the front surface and the rear surface of the lower part of the prefabricated wall, and support embedded screws are respectively embedded in the front side surface and the rear side surface of the support;
Each friction system comprises an upper connecting plate, a lower connecting plate, a first friction plate and a second friction plate, wherein the first friction plate and the second friction plate are positioned between the upper connecting plate and the lower connecting plate, a first groove is formed in the upper connecting plate, and the first friction plate is stuck in the first groove to form a whole; a third bolt hole is formed in the part of the upper connecting plate except the first groove, and a first penetrating friction bolt hole is formed in the first groove part and the first friction plate of the upper connecting plate; the lower connecting plate is provided with a second groove, and the second friction plate is stuck in the second groove to form a whole; a fourth bolt hole is formed in the part of the lower connecting plate except the second groove, and a second penetrating friction bolt hole is formed in the second groove part and the second friction plate of the lower connecting plate;
A part of the wall body embedded screw on the lower front surface of the prefabricated wall body passes through the third bolt hole on one friction system to fix the corresponding upper connecting plate on the prefabricated wall body, and the rest of the wall body embedded screw on the lower front surface of the prefabricated wall body passes through the first friction bolt hole and the second friction bolt hole on one friction system to fix the corresponding upper connecting plate, the first friction plate, the second friction plate and the lower connecting plate together; the embedded screw rod of the support on the front side surface of the support passes through the fourth bolt hole on one friction system to fix the corresponding lower connecting plate on the support;
a part of the wall body embedded screws on the bottom rear side surface of the prefabricated wall body penetrate through the third bolt holes on the other friction system to fix the corresponding upper connecting plate on the prefabricated wall body, and the rest of the wall body embedded screws on the bottom rear side surface of the prefabricated wall body penetrate through the first friction bolt holes and the second friction bolt holes on the other friction system to fix the corresponding upper connecting plate, the first friction plate, the second friction plate and the lower connecting plate together; the embedded screw rod of the support on the rear side surface of the support passes through the fourth bolt hole on the other friction system to fix the corresponding lower connecting plate on the support.
2. The fabricated self-resetting reinforced concrete shear wall of claim 1, wherein the disc springs are conical disc shaped.
3. The fabricated self-resetting reinforced concrete shear wall of claim 1, wherein the disc springs comprise a plurality of disc springs, and the plurality of disc springs are arranged in a superposed and involuted manner.
4. The fabricated self-resetting reinforced concrete shear wall of claim 1, wherein the second friction bolt hole is an elongated hole extending in an up-down direction.
5. The fabricated self-resetting reinforced concrete shear wall of claim 1, wherein the upper connecting plate and the lower connecting plate are both made of steel, and the first friction plate and the second friction plate are both made of asbestos-free composite materials.
6. The fabricated self-resetting reinforced concrete shear wall of claim 1, wherein the upper connection plate is located inboard of the lower connection plate.
7. The fabricated self-resetting reinforced concrete shear wall of claim 1, wherein when the fabricated self-resetting reinforced concrete shear wall is applied to a high-rise structure, the prefabricated walls of different floors are respectively processed, and the prefabricated walls, the resetting system and the friction system of different floors are assembled on site.
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| CN107503553B (en) * | 2017-09-21 | 2023-07-21 | 中国建筑股份有限公司 | Full-assembled prestressed concrete frame anti-seismic energy dissipation component system and construction method |
| CN111749352A (en) * | 2020-07-31 | 2020-10-09 | 西安建筑科技大学 | Energy-consuming connecting device for assembly type shear wall |
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