1.河北地质大学城市地质与工程学院,河北 石家庄 050031
2.河北省地下人工环境智慧开发与管控技术创新中心,河北 石家庄 050031
3.北京工业大学城市与工程安全减灾教育部重点实验室,北京 100124
韩学川(1984—),男,讲师,博士。主要从事地下结构抗震方面的研究。E‑mail:tshanxuechuan@126.com
收稿:2022-07-20,
修回:2022-09-19,
纸质出版:2024-02-15
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韩学川,陶连金,解咏平.摩擦摆隔震地铁车站结构地震响应规律研究[J].防灾减灾工程学报,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.
韩学川,陶连金,解咏平.摩擦摆隔震地铁车站结构地震响应规律研究[J].防灾减灾工程学报,2024,44(01):146-155. DOI: 10.13409/j.cnki.jdpme.20220720001.
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.
基于ABAQUS软件建立土‑隔震地铁车站结构静‑动力耦合三维数值仿真模型,以典型两层两跨箱型结构为研究对象,将摩擦摆隔震支座应用于地铁车站结构,通过在中柱不同位置布置隔震支座,研究隔震地铁车站的地震响应规律和减隔震效果。结果表明:(1) 摩擦摆隔震支座能够增大车站侧墙和板的相对水平位移以及中柱的绝对水平位移且能够有效减小中柱的相对水平位移;从控制结构中柱相对水平位移方面考虑,单支座隔震地铁车站结构应将隔震支座布置于车站底层中柱底部位置,而双支座隔震地铁车站结构应布置于车站顶层和底层中柱柱底位置;(2) 摩擦摆隔震支座能够降低隔震层中柱的应力,隔震支座布置于顶层时,其对底层各构件的应力影响较小;隔震支座布置于底层时,最大应力出现在侧墙底部位置且能够有效减小隔震层中柱应力集中的现象;(3) 摩擦摆隔震支座能够有效降低隔震层中柱的剪力和弯矩,而对于非隔震层中柱内力的降低则效果不佳;从控制结构中柱内力方面考虑,双隔震支座结构优于单隔震支座结构。
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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