北京地铁五号线近接玉蜓桥施工的力学行为研究
Mechanical behavior investigation of the tunnel construction in metro line No.5 adjacent to Yuting Bridge in Beijing
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摘要: 以北京地铁五号线近接玉蜓桥施工为工程背景,运用三维有限元程序ANSYS对地铁区间隧道的开挖过程进行模拟,分析隧道开挖对玉蜓桥桥台及地面环境的影响,并将计算结果与实测结果进行对比分析.结果表明,按照设计要求施工,地铁五号线近接玉蜓桥施工时,对地面环境和桥台的影响均可控制在设计允许的范围之内,无需采取额外的预加固措施.Abstract: The excavation process of the tunnel construction in metro line No. 5 adjacent to Yuting Bridge in Beijing was modeled by 3D-ANSYS numerical code. The influence of the excavation on the bridge's platform and ground environment was analyzed. The computed results were compared with measured data. It is shown that the influence of the excavation on the bridge's platform andground environment is in the range of the allowable value following the design. Any additional prior consolidating measure is not needed.
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