【摘要】 地下工程的建设对无锡地区深基坑的设计、施工和监测技术提出了重大挑战。无锡地区尚无本地区的基坑工程设计规范,而且在深基坑的实践过程中也不时发生基坑倒塌、围护结构位移过大、基坑漏水等事故。针对无锡地区独特的地质条件,分析了深基坑支护结构的受力变形特性,探讨适合无锡地铁基坑支护结构的计算方法。结合无锡地铁一号线市民广场站基坑监测数据,总结了地下连续墙的变形规律,并对无锡地区地基水平抗力比例系数m值进行反演,确定了合理的计算参数,为今后无锡地区的地铁基坑设计提供了参考依据。更多还原

【Abstract】 Underground construction presents a great challenge to the design,construction and monitoring technology of deep excavation in Wuxi area.There is no design specification of excavation in this city.And during the construction of the deep excavation,some accidents appeared,such as,collapse,large displacement of the wall,leaking,and so on.Considering the unique geological environment of Wuxi area,the deformation characteristics of the deep excavation support structure is analyzed,the appropriate calculated method for the excavation support structure in Wuxi region is explored.Based on the monitoring data of the Public Square Station excavation of Wuxi No.1 subway,the deformation regulations of the diaphragm wall is analyzed.Besides,the m value of the soil in Wuxi area,which means the proportional coefficient of horizontal resistance in Wuxi area,is got by back analysis.Finally,the appropriate calculated parameters are determined.This research can provide a reference for the design of the metro excavation engineering in Wuxi area in the future.更多还原