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| 高铁对近接矿区深主井的动静载影响 |
| Dynamic and static influence of high-speed rail train on the neighbouring deep vertical shaft |
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| DOI： |
| 中文关键词: 高铁 列车振动 竖井 邻近影响 |
| 英文关键词: high-speed rail train vibrating vertical shaft neighboring influence |
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| 中文摘要: |
| 将列车和路基视为超载，分析合肥-福州客专对邻近矿区主竖井衬砌的静力影响；根据动力学理论建立考虑山体、竖井、合福客专的数值模型，分析模型的自振频率和振型特性，研究列车对竖井衬砌的位移、应力的影响；并提出竖井回填方案.结果表明，合福客专对竖井的影响范围可达到井口下方的260 m；列车振动主要在竖井中产生竖向位移沉降，其次为竖向隆起；在竖井顶部靠近山表的位置，列车荷载引起的附加动位移和动应力都较大；主井回填采用自下而上的方式进行. |
| 英文摘要: |
| Static effect of Hefei-Fujian passenger dedicated line on the neighboring deep vertical shaft was analyzed by considering trains and roadbed as overloaded.A simulation model was built to study vibration frequency and mode,including displacement and stress of shaft lining.Backfill program was proposed.Result shows the influence scope of the Hefei-Fujian passenger dedicated line on the shaft ranges up to 260m;train vibration leads to vertical settlement and uplift in the shaft lining;the additional dynamic displacement and dynamic stress are larger at the top of the shaft for the freedom surface;the shaft is backfilled by a bottom-up approach. |
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