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Method for optimally designing buckling restrained braces and brace structure system

A technology of buckling restraint and optimal design, applied in building components, anti-seismic and other directions, can solve the problems of high cost, restrict the application and promotion of buckling restraint support, and achieve the effect of high accuracy, favorable application and promotion, and simple method and structure.

Active Publication Date: 2016-03-30
JIANGSU INST OF URBAN PLANNING & DESIGN
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Problems solved by technology

[0006] However, the cost of buckling-constrained braces is much higher than that of ordinary braces, which greatly restricts the application and promotion of buckling-constrained braces.

Method used

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  • Method for optimally designing buckling restrained braces and brace structure system

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Embodiment Construction

[0031] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific preferred embodiments.

[0032] Such as figure 1 As shown, a high-rise building with 34 floors and a total height of 153 meters is taken as an example for illustration.

[0033] The above-mentioned high-rise building has a span of 4.0 meters and a storey height H of 4.5 meters, with a total of 34 floors and a total height of 153 meters. The buckling-constrained support 1 or the common support 4 is arranged between the steel column 2 and the steel beam 3, and both are in the shape of a "herringbone".

[0034] The above-mentioned steel column adopts 600x600x34 square steel pipe, the steel beam adopts H900x400x14x30, and the common support is preferably round steel pipe.

[0035] An optimal design method for a buckling-constrained brace, comprising the following steps:

[0036] Step 1. Common support selection: When selecting common supports, the st...

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Abstract

The invention discloses a method for optimally designing buckling restrained braces and a brace structure system, which comprise steps: the sectional area of a core material which is arranged on a small shear force position is properly cut down when a common brace is selected, buckling restrained braces are distributed, the elasticoplastic deformation and energy dissipation mechanism of brace structure systems of the buckling restrained braces are checked under the actions of middle earthquake and major earthquake by adopting a nonlinear time history analysis method, the buckling restrained braces which are not yielded under the action of the major earthquake are replaced to be common braces according to a equivalent rigidity principle, and the common braces are distributed and the like. The method for optimally designing the buckling restrained braces and the brace structure system can optimally select sectional areas of the core materials of the buckling restrained braces according to born story shear force, enables the buckling restrained braces to be main energy-dissipation components, correspondingly guarantees safety of other parts of structures, and improves global seismic capacity of the structures. Simultaneously, the method for optimally designing the buckling restrained braces and the brace structure system can save cost, and is beneficial for application and popularization of the buckling restrained braces.

Description

technical field [0001] The invention relates to a pressure-bearing design method and a supporting structure system used in high-rise buildings, in particular to an optimal design method and a supporting structure system of buckling-constrained supports. Background technique [0002] Since the Wenchuan Earthquake in 2008, many earthquakes have occurred in our country one after another, and these earthquakes have caused great losses to people's lives and property. [0003] Traditional anti-seismic structures and their design methods mainly rely on the plastic deformation of structural components to consume seismic energy. During strong earthquakes, the structure will be damaged or even collapsed which is difficult to repair. [0004] Based on this, engineering damping control technology emerges at the historic moment, and one of its applications is buckling-restrained braces. [0005] The main function of the buckling restrained brace is to dissipate a large amount of energy ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04B1/98
CPCE04B1/98
Inventor 邱一峰刘畅都磊任伟滨张林晨闫青松陈蕾叶瑛孔秀珍
Owner JIANGSU INST OF URBAN PLANNING & DESIGN
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