A Design Method of Double Seismic Defense Lines for Frame-Core Structural System
A design method, core tube technology, applied in the direction of earthquake resistance, building components, etc., can solve the problem that the function of the second line of defense cannot be fully guaranteed, and achieve the effect of controllable design results, simple operation, and clear concept
Active Publication Date: 2017-04-19
SHANGHAI XIANDAI ARCHITECTURE ENG & CONSULTING CO LTD
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[0007] Aiming at the deficiencies of the prior art, the present invention aims to provide a design method for the double anti-seismic defense line of the frame-core tube structure system, by using a pseudo-elastic-plastic analysis method to calculate and analyze the second line of defense in the double anti-seismic defense line - the outer frame The required bearing capacity of the column, and design the cross-section and reinforcement of the outer frame column based on this, solve the problem that the current one-sided control of the distribution of the seismic shear force ratio of the outer frame column according to the stiffness and the actual second line of defense cannot fully guarantee the effect, and finally make the design More scientific and reasonable, safe and economical
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[0033] The present invention will be further described below in conjunction with the accompanying drawings. It should be noted that the present embodiment is based on the technical solution and provides detailed implementation methods and specific operating procedures, but the protection scope of the present invention is not limited to the present invention. Example.
[0034] Such as figure 1 As shown, the double seismic defense line design method of the frame-core tube structural system specifically includes the following steps:
[0035] S1 first obtains the architectural design scheme based on the frame-core tube structure, generates a three-dimensional model of the building structure, and determines the outer frame column section and reinforcement;
[0036] S2 Pseudo-elastic large earthquake analysis of building structures: set all or part of the outer frame columns in the building structure as ideal elasticity, and set other components of the building structure as nonline...
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The invention discloses a dual seismic-resistant defensive line designing method of a frame-core tube structure system. The dual seismic-resistant defensive line designing method comprises the steps of firstly adopting a pseudo elastic-plastic major-earthquake analysis method to design outer frame columns of a frame-core tube structure to have ideal elasticity, arranging a core tube shear wall according to actual nonlinear material parameters and performing major-earthquake elastic-plastic analysis to know the bearing capacity demands of the outer frame columns under the situation that the structure is still kept upright after a core tube is damaged, then designing the outer frame columns according to the bearing capacity demands, performing pseudo elastic-plastic major-earthquake analysis and column design again after cross section adjustment, cyclically repeating the steps till the cross sections of the outer frame columns change no longer, and regarding a result as a final outer frame column design result. By means of the dual seismic-resistant defensive line designing method, it can be ensured that after the finally-designed frame-core tube structure is subjected to a rarely-occurred earthquake and first defensive lines are severely damaged, second defensive lines have enough bearing capacity and rigidity and ensure that the structure does not collapse, and finally the dual seismic-resistant defensive line purpose is achieved.
Description
technical field [0001] The invention relates to a design method for an anti-seismic defense line of a building structure, in particular to a design method for a double anti-seismic defense line of a frame-core tube structure system. Background technique [0002] The frame-core tube structure system is the most commonly used double lateral force-resistant structure for high-rise buildings. The system consists of two systems, the frame and the core tube, and they work together to resist external forces. In order to ensure multiple lines of defense under major earthquakes, the seismic codes of many countries have made quantitative regulations on the shear force borne by the frame part. The United States Internationalbuilding code2000 proposes that in a frame-core tube (frame-shear wall) structure, under earthquake action, when the design story shear force of the frame part is not less than 25% of the total shear force of the story, it is used as a double lateral force system. ...
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IPC IPC(8): E04B1/98
Inventor 安东亚汪大绥李承铭崔家春
Owner SHANGHAI XIANDAI ARCHITECTURE ENG & CONSULTING CO LTD