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为揭示东北地区地铁车站深基坑沉降变形特性,以沈阳地铁下深沟车站深基坑工程为依托,采用理论分析和现场观测的方法,推导了适合沈阳地区深基坑的最大下沉点位置和最大下沉量的计算中关键参数地基土最大下沉角的公式及值,并得到基坑外地表沉降变形最大点位置和沉降量公式.研究结果表明,地基土最大下沉角的合理性和理论计算方法的可行性.研究结论初步突破了传统沉降变形预测的计算方法,有助于寻求沈阳乃至东北地区的地铁车站深基坑设计施工中沉降变形分析和预测的有效途径.
In order to reveal the settlement characteristics of deep foundation pit of metro station in northeast China, based on the deep foundation pit project of Shenyang Shijiagou station of Shenyang Metro, the maximum sinking point suitable for deep foundation pit in Shenyang area is deduced by theoretical analysis and field observation And the maximum subsidence in the calculation of the key parameters of the maximum subsidence angle of subsoil formula and value and get the maximum settlement of surface deformation of outer surface of foundation pit settlement and settlement formula.The results show that the maximum subsidence angle of subsoil rationality And the feasibility of theoretical calculation method.The research conclusion has basically broken through the calculation method of traditional settlement deformation prediction and is helpful to seek the effective ways of analysis and prediction of settlement deformation in the design and construction of deep foundation pit of metro station in Shenyang and even the northeast of China.