| With the development of science and technology, and the elevation of economic level, building structures'design and construction technologies have developed rapidly, which results in the appearance of many large-span building structures with a span of hundreds of meters. The distance between the restraints of large-span building structures is large, and the spatial variation of ground motion results in the discrepancy of seismic excitations between different restraints (multi-support excitation effect), which causes that the seismic response of structures under multi-support excitations is quite different from that under uniform excitations. Thus study on the influence of multi-support excitation effect on large-span building structures has a great significance for the structure safety during the earthquake. Currently, research on the multi-support excitation effects is still in the exploratory stage, and neither theoretical analysis system nor design method is perfect. By using theoretical analysis and numerical calculation, this dissertation conducts a systematic research on the seismic response analyses of the Kun Ming New Airport Station under multi-support excitations.The Kun Ming new airport project is a national major project which is invested by Kun Ming government since 2007. The fund invested in is nearly 20 billion yuan. It will be one of the most large-scale airports in China after its accomplishment. Due to function requirement, rich facade and architecture, bodily form of the building, It led to a huge column meshes and bigger load were. The anti-seismic design work will become very complex. undoubtedly,the computation become our concern goals.Based on the platform of ANSYS finite element software, It was established the project of the nonseismic-isolation structure model, and calculated seismic response considering consistent input and traveling wave effect, analysised the influence of seismic response under the traveling wave effect.
|
PDF Full Text Request