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Seismic Response Analysis of Large-Span Space Lattice under Multi-Support and Multi-Dimensional Earthquake Exciattion

Author: ALaTa
Tutor: ZhangLingXin
School: China Seismological Bureau, Institute of Engineering Mechanics
Course: Disaster Prevention and Reduction Engineering and Protective Engineering
Keywords: Large span structures Ground motion input mode Multiple support excitation Multidimensional Incentive
CLC: TU352.11
Type: Master's thesis
Year: 2009
Downloads: 193
Quote: 2
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Abstract


With the rapid development of China 's economy , many of our cities , the construction of a large space and large span structures to meet the sports , leisure , exhibitions , airports , hangar space requirements . The destruction of such structures under strong earthquake caused heavy losses of human life and property will be , and how to correctly calculate the earthquake , as well as measures for earthquake measures to reduce earthquake losses urgent research topic . Due to the complex form of the structure of the class structure and natural vibration characteristics and accurately calculate the seismic action undoubtedly need to consider the actual ground motion spatial variation and multidimensional nature of the input field . Study the contents of this article is to span space lattice structures under seismic response analysis of multidimensional input multi , including the implementation of multi- input and multi-dimensional input under when history analysis method , the differences of the structural response of multi-point input and consistent input , multi-dimensional differences of the structural response of multi- input and multi-dimensional consistent input . , Summed up the response characteristics of the structure in the multi - point multidimensional input by analyzing and comparing the results . The main tasks are as follows : 1 , the structure in multi- input and multi-dimensional input time-history response analysis model and analytical methods to achieve . Refer to the results of previous studies based on introduced span space structure of multi- point to the input seismic response analysis of a number of model ; given based on the seismic displacement input span space structure consistent input method , the input method of the multi-point and multi-dimensional input realization of law . 2, the to eight parking maintenance garage grid structure , for example , through its consistent input multi- input , multi-dimensional multi- input and multi-dimensional consistent input dynamic time history results contrast analysis , summarized in a multi- multi - dimensional input the response characteristics of the structure . The analysis and comparison of the results : seismic design for large - span space structure , in order to ensure the security and economic structure , it is necessary to adopt a multi-dimensional multi-point input method for the seismic analysis of the structure . This study further expand the span space structure failure mechanism in multi- input and multi-dimensional input structure , quantitative indicators to measure the structural safety of research work has laid a foundation .

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CLC: > Industrial Technology > Building Science > Building structure > Special Structure > Anti - shock structure,disaster prevention structures > Shock, isolation, and explosion-proof structure > Seismic structure
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