LIU Cuiqing.Seismic Performance of Integrated Subway Station and Upper Cover with High‑Rise Building[J].Journal of Disaster Prevention and Mitigation Engineering,2022,42(03):490-498.
LIU Cuiqing.Seismic Performance of Integrated Subway Station and Upper Cover with High‑Rise Building[J].Journal of Disaster Prevention and Mitigation Engineering,2022,42(03):490-498. DOI: 10.13409/j.cnki.jdpme.20210112001.
Seismic Performance of Integrated Subway Station and Upper Cover with High‑Rise Building
With the development of urban subways, the development of the upper cover structures of existing subway stations in operation has gradually increased. The interaction, cooperative force and seismic performance between the new upper cover project and the operating subway station have attracted more and more attention. Based on the subway operation station project in a certain city in southern China, the integrated seismic thinking of subway stations and upper cover high-rise buildings is proposed. The interaction model between the integrated structure and the foundation soil is established by using SATWE and finite element analysis programs MIDAS respectively and the elastic analysis under frequent earthquake and the elastic-plastic analysis under rare earthquake are carried out. The results show that the seismic influence coefficient of seismic wave was statistically consistent with the design response spectrum at the main period point of the structure. The time history analysis method was used to calculate the frequently encountered earthquake conditions, and the results met the requirements of structural seismic checking calculation. The seismic shear force calculated by each group of seismic waves was not less than 65% of the response spectrum method, and the average floor seismic shear force calculated by time history was less than the response spectrum method. The variation law of displacement angle between floor was basically consistent with the response spectrum method. By analyzing the elastic-plastic time history of rare seismic dynamic, it was found that the ratio of maximum base shear to multiple seismic base shears was 3.29~5.09, the development trend of the plastic hinge of structural frame beam column was reasonable. The frame column did not yield in the final state and about 31.6% of the concrete frame beams and about 19% of the steel beams reached the yield strength. The relevant schemes achieve the expected seismic performance targets.
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