HAN Xuechuan,TAO Lianjin,XIE Yongping.Study on Seismic Response of Metro Station Structure with Friction Pendulum Bearing[J].Journal of Disaster Prevention and Mitigation Engineering,2024,44(01):146-155.
HAN Xuechuan,TAO Lianjin,XIE Yongping.Study on Seismic Response of Metro Station Structure with Friction Pendulum Bearing[J].Journal of Disaster Prevention and Mitigation Engineering,2024,44(01):146-155. DOI: 10.13409/j.cnki.jdpme.20220720001.
Study on Seismic Response of Metro Station Structure with Friction Pendulum Bearing
Based on ABAQUS software, a three-dimensional static-dynamic coupling numerical simulation model for a soil-isolated subway station structure is established. Taking a typical two-story two-span box structure as the research object, the friction pendulum isolation bearings are applied to subway stations. By arranging friction pendulum isolation bearings at different positions of the center column of the station, the seismic response law and isolation effect of isolated subway stations are studied. The results show that: (1) The isolation bearing can increase the relative horizontal displacement of the side walls and slabs of the station, as well as the absolute horizontal displacement of the center column, and can effectively reduce the relative horizontal displacement of the center column. Considering the inter-story displacement control of the structure, the single isolation bearings should be arranged at the bottom of the center column of the ground floor, while the double isolation bearings should be arranged at the bottom of the center column at the top and bottom floors of the station. (2) The isolated subway station structure can reduce the stress of the column in the isolation layer, and when the isolation bearings are arranged on the top floor, they have little influence on the stress of the components on the bottom floor; When the isolation bearings are arranged on the ground floor, the maximum stress appears at the bottom of the side walls, which can effectively reduce the stress concentration of columns in the isolation layer. (3) The isolation bearing can effectively reduce the shear force and bending moment of the column in the isolation layer, but the effect of reducing the internal force of the column in the non-isolation layer is not obvious. Considering the internal force control of the center column of the structure, double isolation bearings are superior to single isolation bearings.
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