【摘 要】
：
以苏州地铁3号线新区站及文昌路站深基坑地下连续墙变形监测数据为基础,研究不同开挖工况对围护墙体变形的影响规律,同时对坑底土体暴露时间下围护墙体变形进行分析,并对比有
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以苏州地铁3号线新区站及文昌路站深基坑地下连续墙变形监测数据为基础,研究不同开挖工况对围护墙体变形的影响规律,同时对坑底土体暴露时间下围护墙体变形进行分析,并对比有无路面盖板对基坑变形的影响。结果表明,施工过程中支撑架设不及时会导致基坑出现较大变形,同时,坑底土体对基坑变形有显著影响,另外,现浇路面盖板对基坑变形的约束效果显著。据此,提出施工单位应及时架设支撑、减少时空效应,施工应尽量缩短坑底土体暴露时间,设计应重点考虑现浇路面盖板对控制变形的有利方面等措施。
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