Self-restoring seismic reduction method of multilayer structure of stay cables and steel moment-resisting frame

A cable-stayed, self-resetting technology, applied in the direction of earthquake resistance, building components, etc., can solve problems such as endangering life and property safety, structural residual displacement, structural collapse, etc., to improve the structure's lateral force resistance, good energy consumption performance and Effect of self-resetting performance

Inactive Publication Date: 2015-09-02
SHANGHAI UNIV
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Problems solved by technology

Under the earthquake, the steel frame structure may have a large horizontal displacement, and at the same time, the structure will have a la

Method used

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  • Self-restoring seismic reduction method of multilayer structure of stay cables and steel moment-resisting frame
  • Self-restoring seismic reduction method of multilayer structure of stay cables and steel moment-resisting frame
  • Self-restoring seismic reduction method of multilayer structure of stay cables and steel moment-resisting frame

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[0025] The self-resetting damping method of the multi-layer stay cables and the steel bending-resistant frame proposed by the present invention will be further described in detail below in conjunction with the accompanying drawings and taking three layers as an example. Advantages and features of the present invention will be apparent from the following description and claims. It should be noted that all the drawings are in a very simplified form and use imprecise scales, and are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention.

[0026] like Figure 1 to Figure 3 , the present invention takes three layers as an example, and the specific steps are as follows:

[0027] Step 1: Determine the stay cable 1, the steel flexural frame 3 and the BRB (buckling-resisting brace) 2 as the lateral force-resisting components, and the BRB is the main energy-dissipating and shock-absorbing component; the steel flexural frame is a...

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Abstract

The invention provides a self-restoring seismic reduction method of a multilayer structure of stay cables and a steel moment-resisting frame. The method includes the steps of 1, determining the stay cables, the steel moment-resisting frame and BRBs (buckling restrained braces) as lateral load resistant members, with the BRBs serving as main energy-dissipating seismic-reducing members; 2, determining lateral stiffness of the stay cables, the BRBs and the steel moment-resisting frame in any layer, and total lateral stiffness of a self-restoring seismic reduction system; 3, under the action of horizontal load, calculating a horizontal displacement according to the total lateral stiffness of the self-restoring seismic reduction system; 4, symmetrically applying prestress to the stay cables in the same floor in the transverse or vertical direction. The method has the advantages that lateral resistance of a structure can be effectively improved and the structure is imparted good energy-dissipating, seismic reduction and self-restoring performances.

Description

technical field [0001] The invention relates to the technical field of construction, in particular to a self-resetting shock absorption method of multi-layer stay cables and steel bending-resistant frames. Background technique [0002] The horizontal lateral stiffness of the traditional steel frame structure is relatively small. In order to meet the displacement requirements under the horizontal load, measures such as increasing the size of the structural section or adding other devices have been taken, which has significantly increased the project cost. Under the earthquake, the steel frame structure may have a large horizontal displacement, and at the same time, the structure will have a large residual displacement and cannot be reset; more seriously, it will cause the structure to collapse, endangering life and property safety. Therefore, it is more and more popular in the society to seek to add some devices (energy dissipation, shock absorption, structural restoration an...

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Application Information

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IPC IPC(8): E04B1/98
Inventor 李春祥蓝声宁
Owner SHANGHAI UNIV
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