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A shear key damping support capable of stiffness degradation and energy dissipation

A shear key and damping technology, applied in the direction of building types, buildings, building components, etc., can solve the problems of inconvenient on-site installation, complex structure of limit damper, and small bearing capacity, so as to achieve good ductility, convenient transportation, The effect of easy installation

Active Publication Date: 2020-04-14
HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The structure of the current limit damper is relatively complicated, it is not convenient to install on site, and the bearing capacity it can provide is small, and it can only provide stiffness under wind load or small earthquake

Method used

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  • A shear key damping support capable of stiffness degradation and energy dissipation
  • A shear key damping support capable of stiffness degradation and energy dissipation
  • A shear key damping support capable of stiffness degradation and energy dissipation

Examples

Experimental program
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Effect test

Embodiment 1

[0034] Such as figure 1 As shown, a shear key damping support capable of achieving stiffness degradation and energy consumption is characterized in that it consists of three parts: an outer casing restraint support, an embedded sliding support, and an embedded damper. A section of the outer casing restraint support and the embedded sliding support are respectively bolted or welded to the beam-column nodes of the structure, and the overlapping places are nested with each other and connected by a shear key bolt group. One end of the embedded damper is connected with the embedded sliding support by bolts or Welding, the other end is connected at the beam-column node with the outer shell restraint support.

Embodiment 2

[0036] In the technical solution of the first embodiment, such as figure 2 As shown, the box-shaped steel pipe used for the outer casing restraint support has holes at one end that is not connected to the beam-column nodes. The holes are located on two opposite sides, and the holes are distributed in two rows along the axial direction of the steel pipe. The height of the I-beam used for the embedded sliding support is the same as the height of the inner edge of the box-shaped steel pipe. The flange width of the I-beam is slightly smaller than the inner edge width of the box-shaped steel pipe to prevent the steel from deforming and hindering sliding. Holes are opened at one end. The holes are located on the four flanges of the I-beam, distributed along the I-beam. The distance between the holes in the width direction of the flange is the same as the distance in the width direction of the box-shaped steel pipe.

[0037] In order to realize the shear failure resistance and replaceme...

Embodiment 3

[0040] The frame-shear key damping support structure applying the technical solution of the second embodiment is compared with the frame-anti-buckling support structure not applying the present invention. The structure arrangement is as follows Figure 4 As shown, the shear key damping support or anti-buckling support is applied to a two-story steel-reinforced concrete giant frame structure. The giant frame has a 42-meter first floor and a total structure of 84 meters high. The frame column section size is 2000×2000mm, and the steel content is 5%; the frame beam section size is 1000×2000mm, and the steel content is 2.15%. The steel is all Q390, and the concrete is all C60.

[0041] The structure is subjected to one-way static horizontal loading, and the internal force at the bottom of the frame column and the compression damage development of the concrete at the bottom of the column under pressure are extracted. Compared with the frame-anti-buckling support structure without the a...

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Abstract

The invention provides a shear key damping support capable of realizing stiffness degradation and energy dissipation. The shear key damping support provides resist lateral rigidity as an ordinary support under certain axial force, when internal force of the shear key damping support reaches the certain level, stiffness degradation can be achieved, energy is dissipated through a built-in damper, thus system converting of the whole structure is achieved, and the ductility of the structure is facilitated. The shear key damping support capable of realizing stiffness degradation and energy dissipation is composed of two sections of supports connected through a bolt group, and an embedded damper; the two sections of supports are mutually nested and can relatively rub after the bolt group is damaged, and energy dissipation is conducted through the damper connected with one of the supports. According to the shear key damping support, stiffness degradation is achieved through bolt shearing, onthe one hand, the basic period of the whole structure is changed, thus the seismic influence coefficient under a short period earthquake is decreased, on the other hand, the axial compression ratio ofa structural column is greatly decreased, and thus the ductility of the structural column is ensured; and through the construction form of whole segmenting of the support, transportation is convenient, through a bolt connecting form, mounting is convenient, the bolts can be replaced after being damaged, and the requirements of fabricated structures and toughness structures are met.

Description

Technical field [0001] The invention belongs to the field of energy-consuming supports for high-rise structures, and specifically relates to a shear key damping support capable of achieving stiffness degradation and energy consumption. Background technique [0002] For high-rise and super-high-rise buildings, it is very important to control the response under various external actions and ensure that the inter-story displacement angle, vertex speed and other indicators meet the specifications to ensure the normal use and safety of the structure. Therefore, a large number of The new structural system has been widely used. [0003] In order to increase the lateral rigidity of the structure in the new mechanism system, the core tube and the frame-support structure are often used in the form of structure. The support in the frame has a considerable influence on the stiffness of the overall structure, so the design of the support will be very large. Control the overall performance of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04B1/98E04H9/02
CPCE04H9/021
Inventor 滕军王宇超李祚华
Owner HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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