软土地区盾构隧道施工数值模拟研究及应用  

Numerical Simulation Research&Application of Shield Tunnel Construction in Soft Soil Area

作　　者：林咏梅 LIN Yong-mei(Shanghai Urban Construction Design&Research Institute(Group)Co.,Ltd.,Shanghai 200125,China)

机构地区：[1]上海市城市建设设计研究总院(集团)有限公司,上海200125

出　　处：《中国市政工程》2022年第5期55-59,123,共6页China Municipal Engineering

基　　金：上海市科学技术委员会科研计划项目(18DZ1205102)。

摘　　要：数值模拟已成为分析盾构隧道施工的重要手段,而计算准确性的关键是选择合适的土体本构模型及确定正确的参数。为研究适用于上海地区软土地层盾构隧道施工数值模拟的土体本构,结合上海工程实例,分别采用摩尔-库伦模型(MC)、土体硬化模型(HS)、小应变土体硬化模型(HS-Small),对盾构隧道施工进行数值模拟,通过与ANSYS理论计算结果进行对比,分析不同土体本构模型在数值模拟中的适用性。研究发现,针对上海地区软土地层,在盾构隧道施工工程中采用摩尔-库伦模型(MC)、土体硬化模型(HS)的计算结果与ANSYS理论计算结果吻合度较高。这些模型已成功应用在实际隧道工程的结构受力分析中。Numerical simulation has become an important means to analyze shield tunnel construction,and the key to the accuracy of calculation is to select appropriate soil constitutive model&determine accurate parameters.To study the soil constitutive model applicable to the numerical simulation of shield tunnel construction in soft soil strata in Shanghai area,the MohrCoulomb model(MC),the soil hardening model(HS),and the small strain soil hardening model(HS-Small)are used to conduct numerical simulation of shield tunnel construction,and the applicability of different soil constitutive models in numerical simulation is analyzed by comparing with the theoretical calculation results of ANSYS.It is found that the calculation results of the MC model and the HS model used in shield tunnel construction in Shanghai area are in good agreement with those of ANSYS theory.These models have been successfully applied to the structural stress analysis of actual tunnel engineering.

关 键 词：盾构隧道施工 本构模型 数值模拟 

分 类 号：U455.43[建筑科学—桥梁与隧道工程]