交通荷载对基坑围护结构变形特性的有限元分析
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摘要
根据某地铁车站工程的地质特点和条件,采用有限元方法分析了交通荷载对地铁车站基坑围护结构变形的影响规律,并与实测结果进行了对比。结果表明交通荷载作用下基坑变形明显增大,并且随着基坑开挖深度的增加,总体呈增大趋势。研究结果对其他相似工程有借鉴意义。
According to the geological characteristics and conditions of a subway station project, the influence laws of the deformation of the metro station foundation pit retaining structure under traffic load are analyzed by finite element, and compared with that of the measured results. The results show that the deformation of the foundation pit is obviously increased under the effect of traffic load, and the general trend is increased with the increase of the depth of the foundation pit excavation. The research results can be used for reference in other similar projects.
According to the geological characteristics and conditions of a subway station project, the influence laws of the deformation of the metro station foundation pit retaining structure under traffic load are analyzed by finite element, and compared with that of the measured results. The results show that the deformation of the foundation pit is obviously increased under the effect of traffic load, and the general trend is increased with the increase of the depth of the foundation pit excavation. The research results can be used for reference in other similar projects.
引文
[1] 马晓芳.车辆荷载作用下深基坑支护结构计算方法研究[D].西安:西安建筑科技大学,2010.
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[6] 汪东林,汪磊.紧邻既有高速公路偏压地铁深基坑围护结构变形监测与数值模拟研究[J].建筑结构,2015,45(11):91-95.
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[2] 邱洪志,孔纪名,王仁超,等.车辆荷载对支护桩主动土压力的影响分析[J].岩土工程学报,2016,38(3):486-493.
[3] 李建明.列车动荷载对基坑变形的影响[D].天津:天津大学,2012.
[4] 李玉岐,周旋,谢康和.坑外荷载对软土地区基坑开挖变形性状的影响[J].建筑科学与工程学报,2016,33(4):97-102.
[5] 陈梅,郑坚昭,莫玮宏,等.车辆超载作用下软弱基坑变形特性研究[J].地下空间与工程学报,2014,10(3):539-546.
[6] 汪东林,汪磊.紧邻既有高速公路偏压地铁深基坑围护结构变形监测与数值模拟研究[J].建筑结构,2015,45(11):91-95.
[7] 邱洪志.交通荷载作用下基坑支护结构受力变形分析[D].郑州:郑州大学,2012