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Bamboo Buckling Constrained Brace

A buckling restraint, bamboo-shaped technology, applied in building components, earthquake resistance, etc., can solve the problems of complex structure of restraint components, performance impact, concrete compaction and difficulty in setting non-bonded materials, etc., and achieves stable bearing capacity enhancement and low yield force. , the effect of easy installation

Active Publication Date: 2018-05-15
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems such as the difficulty in setting concrete dense and unbonded materials in the buckling restraint support of steel and concrete composite restraint components and the impact on performance, the complex structure of the restraint components of the circular rod core rod buckling restraint support, etc. Proposed a bamboo-shaped buckling-restrained brace

Method used

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  • Bamboo Buckling Constrained Brace
  • Bamboo Buckling Constrained Brace
  • Bamboo Buckling Constrained Brace

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Such as Figure 1-7Shown: a bamboo-shaped buckling-constrained support, including a core component 1, an outer constraint component 2 and a reinforced connection component 3, the core component 1 is composed of a plurality of circular energy-dissipating segments 1-1 and circular elastic segments 1-2 along the longitudinal direction Alternate distribution structure, the circular energy dissipation section 1-1 and the circular elastic section 1-2 are coaxial, the circular energy dissipation section 1-1 has a cross-sectional area smaller than the circular elastic section 1-2, and the circular elastic section 1-2 It is formed by cutting along the periphery, the core component 1 is located inside the outer constraint component 2, the circular elastic section 1-2 of the core component is close to or tangent to the inner side of the outer constraint component 2, and the circular elastic section 1-2 is not directly connected by It consists of a plurality of middle elastic secti...

Embodiment 2

[0045] Such as Figure 8 As shown: this embodiment is the same as the rest of embodiment 1, except that the lengths of the multiple circular energy dissipation sections 1-1 of the core component gradually increase from both ends to the middle.

[0046] The length of a single circular energy dissipation section 1-1 of the core component does not exceed 8 times its radius.

[0047] Such as Figure 9 and 10 As shown in , it is a schematic diagram of compression deformation without and with reinforcement tubes in bamboo-shaped buckling-restrained braces. If there is no reinforcement cylinder in the reinforcement connection part (such as Figure 9 As shown), the elastic section at the end of the core component may yield under the action of the end bending moment generated by the axial force, resulting in a plastic hinge and a significant rotation angle α, which will amplify the effect of the end bending moment and seriously reduce the overall stability of the support . After t...

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Abstract

The invention discloses a bamboo-shaped buckling-restrained brace, comprising a core component, an external restrained component and reinforced connecting components, wherein the core component is formed by alternately arranging a plurality of circular energy dissipation sections and a plurality of circular elastic sections along a longitudinal coaxial line; each circular elastic section comprises a plurality of middle elastic sections and two end elastic sections; the cross sectional area of each circular energy dissipation section is smaller than that of the corresponding circular elastic section; the core component is positioned in the external restrained component; each reinforced connecting component is composed of a node section, a connecting section and a reinforcing barrel. The bamboo-shaped buckling-restrained brace disclosed by the invention has the advantages that all the circular energy dissipation sections are shorter, and only yield without buckling under the action of an axial force, so that mortar is unnecessarily added or additional parts are unnecessarily arranged for restraining the circular energy dissipation sections, the cross sectional area of each circular energy dissipation section is smaller than that of each circular elastic section, the yielding force is less, and the rigidity requirement on the external restrained component is lower, therefore the external restrained component can be a simple circular casing, and the effects of simple structure, convenience in processing and lighter dead-weight are achieved.

Description

technical field [0001] The invention belongs to the field of civil engineering and relates to a buckling constraint support for reducing the seismic response of engineering structures. Background technique [0002] Earthquake is one of the major natural disasters that cities and their buildings may suffer. Strong earthquakes not only cause structural damage, but also cause secondary disasters such as fires and chain effects. The concept of energy dissipation and shock absorption refers to absorbing and dissipating seismic energy through energy dissipation devices, effectively reducing the response and damage of the structure, and avoiding serious damage to the main structure. Buckling-restrained braces, as an energy-dissipating and shock-absorbing member with superior performance, have been rapidly popularized and applied in Japan, the United States and other earthquake-prone developed countries, and their research and application in my country are also in their infancy. Bu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04B1/98
CPCE04B1/98
Inventor 王春林刘烨曾滨陈泉
Owner SOUTHEAST UNIV