兰州轨道交通1号线侧穿白衣寺保护措施研究

Research on Protective Measures for White Temple due to Side Crossing of Lanzhou Rail Traffic Line No.1

针对兰州轨道交通1号线侧穿省级文物白衣寺保护区,由于盾构施工以及运营期会对古建筑物有影响,为确保文物安全,提出一套对白衣寺的具体有效的保护措施。通过三维有限元数值模拟对处理效果分析得出:采取隔离桩加固措施后白衣寺沉降远低于标准安全评估的沉降变形控制要求;采用钢弹簧浮置板道床时列车运行振动对地表影响有明显改善。通过数值分析,论证一套具有很强实用价值的隧道穿越古建筑物保护措施设计方案。

In order to ensure the security of historical relics,the article puts forward an efficient protective measures for White Temple because of the influence of the shield construction and operation period on the ancient buildings when Lanzhou Rail Traffic Line No.1 side-crosses the provincial historical relics of White Temple Protective Area.The article analyzes the treatment effect through three-dimensional finite element numerical simulation and shows that the settlement of White Temple is far lower than the standard security evaluation of settlement deformation control requirement after the isolation pile reinforcing measures are taken,and the steel spring floating slab track bed can obviously improve the influence of train operating vibration on the ground surface.Through numerical analysis,the article demonstrates the strong practical valuable design scheme of protective measures for crossing the ancient buildings.