CN110552439B - One-way energy consumption device with self-resetting capability and shear wall - Google Patents

One-way energy consumption device with self-resetting capability and shear wall Download PDF

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Publication number
CN110552439B
CN110552439B CN201910676829.6A CN201910676829A CN110552439B CN 110552439 B CN110552439 B CN 110552439B CN 201910676829 A CN201910676829 A CN 201910676829A CN 110552439 B CN110552439 B CN 110552439B
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China
Prior art keywords
damper
self
disc spring
shear
plate
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CN201910676829.6A
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CN110552439A (en
Inventor
陈跃
蔡可键
李青倩
姚诞圣
齐辉
徐榕
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Ningbo University of Technology
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Ningbo University of Technology
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62Insulation or other protection; Elements or use of specified material therefor
    • E04B1/92Protection against other undesired influences or dangers
    • E04B1/98Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04HBUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H9/00Buildings, or groups of buildings, or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake, extreme climate
    • E04H9/02Buildings, or groups of buildings, or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake, extreme climate withstanding earthquake or sinking of ground
    • E04H9/021Bearing, supporting or connecting constructions specially adapted for such buildings

Abstract

The invention provides a one-way energy consumption device with self-resetting capability and a shear wall, and relates to the technical field of anti-seismic structures, wherein the one-way energy consumption device with the self-resetting capability comprises: the steel sleeve, the mandrel, the damper top plate, the elastic structure, the first stop block and the second stop block; the one-way energy consumption device with the self-resetting capability can consume energy in medium or large earthquakes, can effectively avoid the damage to two ends of the bottom of a wall limb, and protects the main structure; meanwhile, the method is beneficial to reducing the damage of the structure during earthquake, and can be widely applied to important building structures in high-intensity earthquake areas.

Description

One-way energy consumption device with self-resetting capability and shear wall
Technical Field
The application relates to the technical field of anti-seismic structures, in particular to a one-way energy dissipation device with self-resetting capability and a shear wall.
Background
The earthquake-proof design is a special design for the engineering structure in the earthquake region, so as to meet the comprehensive requirements of the safety and the economy of the engineering structure under the action of the earthquake. With the progress of earthquake-proof technology and the improvement of social and economic development level, earthquake-proof design should gradually change from collapse-resistant design to recoverable functional design. Most studies are currently directed only to the self-resetting capability of the self-resetting shear wall, and less consideration is given to the failure of both ends of the bottom of the shear wall. For example, chinese patent CN201310723772.3 discloses a self-resetting shear wall with replaceable coupling beams, which is composed of replaceable coupling beams and self-resetting shear walls connected with the replaceable coupling beams, wherein the replaceable coupling beams are composed of replaceable sections and non-yielding sections, and the self-resetting shear walls are post-tensioning unbonded prefabricated shear walls.
The self-resetting precast concrete shear wall belongs to a recoverable functional structure system, has the advantages of small residual deformation after earthquake, light damage, easy construction and maintenance, long service life and high cost benefit, and has the defects that two sides of the bottom of a wall limb after earthquake are easy to damage, and inconvenience is brought to restoration after earthquake.
Disclosure of Invention
The technical problem that this application will solve lies in, to the above-mentioned not enough of prior art, provides one kind and has one-way power consumption device and shear force wall from reset ability.
The one-way energy consumption device with self-resetting capability comprises:
the steel sleeve is internally provided with a containing cavity with an upper opening; a first annular protruding limiting part and a second annular protruding limiting part are formed on the inner wall of the accommodating cavity; the second convex limiting part is positioned above the first convex limiting part;
a core rod inserted downward into the accommodating cavity;
the damper comprises a damper and a damper top plate, wherein the damper top plate is limited below the first convex limiting part by the first convex limiting part; the damper is arranged between the bottom of the accommodating cavity and the top plate of the damper;
the elastic structure is arranged between the first protruding limiting part and the second protruding limiting part in the accommodating cavity and comprises a first disc spring baffle plate, a second disc spring baffle plate and a disc spring, wherein the first disc spring baffle plate is positioned at the upper side and limited by the position of the second protruding limiting part; the core rod sequentially penetrates through the first disc spring baffle, the disc spring and the second disc spring baffle from top to bottom;
the first stop block is embedded in the first protruding limiting part; the first stop block is fixed with the lower end of the core rod;
and the second stop block is embedded in the second convex limiting part and fixedly arranged on the periphery of the core rod.
Further, the second protruding limiting part is formed at an opening on the upper side of the accommodating cavity.
Further, the unidirectional energy consumption device with self-reset capability further comprises: an upper baffle plate is fixed at the opening at the upper side of the containing cavity and sleeved on the periphery of the core rod.
Further, the damper is hinged with the bottom of the accommodating cavity; the damper is hinged with the damper top plate.
Further, the damper is hinged to the bottom of the accommodating cavity, and the damper is hinged to the top plate of the damper in a universal mode.
Furthermore, a plurality of square openings in the vertical direction are arranged on the side wall of the steel sleeve at the position corresponding to the damper and at the position corresponding to the disc spring.
Further, at least three dampers are arranged between the bottom of the accommodating cavity and the damper top plate.
Further, the mandrel is a variable cross-section steel pipe.
On the other hand, the invention also provides a shear wall, wherein the bottoms of the two sides of the shear wall are provided with a plurality of the one-way energy dissipation devices with the self-resetting capability.
Furthermore, the shear wall is a post-tensioning unbonded prefabricated shear wall.
The one-way energy dissipation device with the self-resetting capability is arranged on two sides of a corner of a shear wall, if the one-way energy dissipation device is pulled, the second disc spring baffle moves upwards, the disc spring is pressed to provide restoring force, the second disc spring baffle is separated from the top plate of the damper, and the damper does not work; if the one-way energy dissipation device is pressed, the first disc spring baffle moves downwards, the disc spring is pressed to provide restoring force, the second disc spring baffle moves downwards, and the damper is pressed to dissipate energy. Therefore, the damper does not function when reset, so that the restoring force is not counteracted, and the residual deformation of the structure is favorably reduced. The one-way energy dissipation device with the self-resetting capability can dissipate energy in medium or large earthquakes, can effectively avoid damage to two ends of the bottom of a wall limb, and protects the main structure. In addition, the energy consumption device can also provide certain restoring force, and the residual deformation of the structure is favorably reduced. The invention has convenient construction, is beneficial to reducing the damage of the structure during earthquake, and can be widely applied to important building structures in high-intensity earthquake areas.
Drawings
Fig. 1 is a schematic structural diagram of a unidirectional energy consumption device with self-resetting capability according to an embodiment of the present invention.
Fig. 2 is an exploded schematic view of a unidirectional energy consumption device with self-resetting capability according to an embodiment of the present invention.
Fig. 3 is a schematic diagram of an internal structure of a unidirectional energy consumption device with self-resetting capability according to an embodiment of the present invention.
Fig. 4 is a schematic structural view of a steel sleeve according to an embodiment of the present invention.
Fig. 5 is a schematic view of the internal structure of a steel sleeve according to an embodiment of the present invention.
Fig. 6 is a schematic structural diagram of a shear wall according to an embodiment of the present invention.
Detailed Description
The following are specific embodiments of the present application and are further described with reference to the drawings, but the present application is not limited to these embodiments. In the following description, specific details such as specific configurations and components are provided only to help the embodiments of the present application be fully understood. Accordingly, it will be apparent to those skilled in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the present application. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.
In addition, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
The embodiment of the invention discloses a one-way energy consumption device with self-resetting capability, and with reference to fig. 1 to 5, the one-way energy consumption device with self-resetting capability comprises: a steel sleeve 1, wherein a containing cavity 12 with an upper opening 11 is formed in the steel sleeve 1; a first protruded limiting part 13 and a second protruded limiting part 14 which are annular are formed on the inner wall of the accommodating cavity 12; the second bump stopper 14 is located above the first bump stopper 13. A core rod 2 inserted downward into the accommodation chamber 12; a damper 3 and a damper top plate 8, the damper top plate 8 being restricted by a first bump stopper 13 at a position below the first bump stopper 13; the damper 3 is arranged between the bottom of the accommodating cavity 12 and the damper top plate 8; the elastic structure 4 is arranged between the first protruding limiting part 13 and the second protruding limiting part 14 in the accommodating cavity 12, and the elastic structure 4 comprises a first disc spring baffle plate 41 which is positioned at the upper side and limited by the position of the second protruding limiting part 14, a second disc spring baffle plate 42 which is positioned at the lower side and limited by the position of the first protruding limiting part 13, and a disc spring 43 which is positioned between the first disc spring baffle plate 41 and the second disc spring baffle plate 42; the core rod 2 sequentially penetrates through the first disc spring baffle plate 41, the disc spring 43 and the second disc spring baffle plate 42 from top to bottom; a first stopper 5 embedded in the first protrusion limiting portion 13; the first stop block 5 is fixed with the lower end of the core rod 2; and the second stop block 6 is embedded in the second convex limiting part 14 and fixedly arranged on the periphery of the core rod 2.
The receiving space 12 of the steel sleeve 1 is used to receive components. In some embodiments, the mandrel 2 is a variable section steel tube.
The one-way energy dissipation device with self-resetting capability is installed at the bottoms of two sides of the shear wall, and the installation position can refer to fig. 6.
The second bulge limit part 14 of the steel sleeve 1 can limit the first disc spring baffle plate 41 at a position below the second bulge limit part 14; the first protrusion-restricting portion 13 restricts the second disc spring retainer 42 at a position above the first protrusion-restricting portion 13.
It should be noted that the one-way energy dissipation device with self-resetting capability can dissipate energy in the middle earthquake or large earthquake, and can effectively avoid the damage of the two ends of the bottom of the wall limb and protect the main structure. In addition, the energy consumption device can also provide certain restoring force, and the residual deformation of the structure is favorably reduced. The invention has clear concept and convenient construction, is beneficial to reducing the damage of the structure during earthquake, and can be widely applied to important building structures in high-intensity earthquake areas.
Specifically, if the unidirectional energy dissipation device is pulled, the second disc spring baffle 42 moves upwards, the disc spring 43 is pressed to provide restoring force, the second disc spring baffle 42 is separated from the damper top plate 8, and the damper 3 does not work. If the unidirectional energy dissipation device is pressed, the first disc spring baffle 41 moves downwards, the disc spring 43 is pressed to provide restoring force, the second disc spring baffle 42 moves downwards, and the damper 3 is pressed to dissipate energy. Therefore, the damper 3 does not function at the time of resetting, so that the restoring force is not cancelled, which is advantageous for reducing the residual deformation of the structure.
In some embodiments, the first stop 5, the second stop 6 and the mandrel 2 are fixed together by welding.
In some embodiments, the second bump stopper 14 is formed at the upper opening 11 of the accommodating chamber 12.
In some embodiments, the one-way energy consuming device with self-resetting capability further comprises: an upper baffle plate 7 fixed at the opening 11 at the upper side of the accommodating cavity 12 and sleeved on the periphery of the core rod 2.
Further, the steel sleeve 1 and the upper baffle 7 can restrict the deformation direction of the mandrel 2, and prevent the mandrel 2 from being deformed laterally.
In some embodiments, said damper 3 is hinged with the housing bottom 12 a; the damper 3 is hinged with a damper top plate 8. The hinge joint enables the damper 3 to be only acted by axial force, the stress condition of the damper 3 is simplified, and the service life of the damper 3 is prolonged.
In some embodiments, the articulation between the damper 3 and the receiving chamber bottom 12a, and the articulation between the damper 3 and the damper top plate 8 are universal articulations.
In some embodiments, the side wall of the steel sleeve 1 is provided with a plurality of vertically square openings 15 at positions corresponding to the dampers 3 and the belleville springs 43. The square opening 15 can be used for observing the appearance condition of the damper 3 and the disc spring 43 in the accommodating cavity 12 of the steel sleeve 1, and further judging the damage condition of the damper 3 and the disc spring 43.
In some embodiments, at least three dampers 3 are disposed between the receiving chamber bottom 12a and the damper top plate 8. It should be noted that the specific number of dampers 3 can be determined according to practical situations, and is not limited herein.
Referring to fig. 6, the shear wall according to the embodiment of the present invention is further shown, and the bottoms of two sides of the shear wall are provided with the unidirectional energy dissipation devices a shown in fig. 1 to 5, which have self-resetting capability.
Specifically, if the unidirectional energy consumption device a is reset by tensile force, the damper 3 does not act, so that the restoring force is not offset, and the residual deformation of the structure is favorably reduced.
In some embodiments, a plurality of vertical prestressed tendons are also arranged in the shear wall. The prestressed tendons are made of single or multiple steel bars, steel wires or steel strands.
In some embodiments, the shear wall is a post-tensioning unbonded precast shear wall.
The specific embodiments described herein are merely illustrative of the spirit of the application. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the present application as defined by the appended claims.

Claims (9)

1. A one-way energy consuming device with self-resetting capability, comprising:
the steel sleeve is internally provided with a containing cavity with an upper opening; a first annular protruding limiting part and a second annular protruding limiting part are formed on the inner wall of the accommodating cavity; the second convex limiting part is positioned above the first convex limiting part;
a core rod inserted downward into the accommodating cavity;
the damper comprises a damper and a damper top plate, wherein the damper top plate is limited below the first convex limiting part by the first convex limiting part; the damper is arranged between the bottom of the accommodating cavity and the top plate of the damper, the damper is hinged with the bottom of the accommodating cavity, and the damper is hinged with the top plate of the damper;
the elastic structure is arranged between the first protruding limiting part and the second protruding limiting part in the accommodating cavity and comprises a first disc spring baffle plate, a second disc spring baffle plate and a disc spring, wherein the first disc spring baffle plate is positioned at the upper side and limited by the position of the second protruding limiting part; the core rod sequentially penetrates through the first disc spring baffle, the disc spring and the second disc spring baffle from top to bottom;
the first stop block is embedded in the first protruding limiting part; the first stop block is fixed with the lower end of the core rod;
and the second stop block is embedded in the second convex limiting part and fixedly arranged on the periphery of the core rod.
2. The one-way energy dissipating device with self-resetting capability of claim 1, wherein the second bump stopper is formed at the upper opening of the accommodating cavity.
3. The self-resetting capable unidirectional energy dissipating device of claim 2, further comprising: an upper baffle plate is fixed at the opening at the upper side of the containing cavity and sleeved on the periphery of the core rod.
4. The one-way energy dissipating device with self-resetting capability of claim 1, wherein the articulation between the damper and the bottom of the receiving cavity and the articulation between the damper and the top plate of the damper are universal articulations.
5. The one-way energy consumption device with self-resetting capability of claim 1, wherein the side wall of the steel sleeve is provided with a plurality of vertically square openings at the positions corresponding to the dampers and the belleville springs.
6. The one-way energy dissipating device with self-resetting capability of claim 1, wherein at least three dampers are disposed between the bottom of the receiving cavity and the top plate of the damper.
7. A one-way energy dissipating device with self-resetting capability as claimed in claim 1, wherein said core rod is a variable cross-section steel tube.
8. A shear wall, characterized in that the bottom parts of two sides of the shear wall are provided with a plurality of unidirectional energy dissipation devices with self-resetting capability as claimed in any one of claims 1 to 7.
9. The shear wall of claim 8, wherein the shear wall is a post-tensioning unbonded precast shear wall.
CN201910676829.6A 2019-07-25 2019-07-25 One-way energy consumption device with self-resetting capability and shear wall Active CN110552439B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112252486B (en) * 2020-10-30 2022-03-11 郑州航空工业管理学院 Steel structure connecting node
CN112482603B (en) * 2020-11-04 2022-02-01 长安大学 Self-resetting reinforced concrete shear wall

Citations (5)

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Publication number Priority date Publication date Assignee Title
JP2000073472A (en) * 1998-08-27 2000-03-07 Misawa Homes Co Ltd Wall panel
CN107489294A (en) * 2017-07-18 2017-12-19 北京交通大学 A kind of built-in spring self-restoring concrete shear force wall
CN207032551U (en) * 2017-03-03 2018-02-23 哈尔滨工业大学 The adjustable passive negative stiffness damper of series mechanism
CN108301525A (en) * 2018-03-20 2018-07-20 青岛理工大学 The adjustable damping device of rigidity and its installation method
CN110005091A (en) * 2019-03-26 2019-07-12 北京交通大学 A kind of hinged low damage Self-resetting shear wall in bottom

Family Cites Families (1)

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Publication number Priority date Publication date Assignee Title
CN203977612U (en) * 2014-06-24 2014-12-03 上海大学 A kind of On A Retrofitted Damper

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000073472A (en) * 1998-08-27 2000-03-07 Misawa Homes Co Ltd Wall panel
CN207032551U (en) * 2017-03-03 2018-02-23 哈尔滨工业大学 The adjustable passive negative stiffness damper of series mechanism
CN107489294A (en) * 2017-07-18 2017-12-19 北京交通大学 A kind of built-in spring self-restoring concrete shear force wall
CN108301525A (en) * 2018-03-20 2018-07-20 青岛理工大学 The adjustable damping device of rigidity and its installation method
CN110005091A (en) * 2019-03-26 2019-07-12 北京交通大学 A kind of hinged low damage Self-resetting shear wall in bottom

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