地铁联络通道冻结帷幕力学性能研究

为研究地铁联络通道施工安全性,结合地铁联络通道的实际受力特点,采用结构力学和ANSYS有限元软件对冻结帷幕进行计算,得到2种冻结帷幕的安全系数。结果表明,通道弯拉应力最大值为0.721 MPa,压应力最大值为0.779 MPa,剪应力最大值为0.617 MPa,最大位移为31.1 mm;泵站弯拉应力最大值为0.07 MPa,压应力最大值为0.78 MPa,剪应力最大值为0.192 MPa,最大位移为16.4 mm。结构力学与数值模拟计算得出的结果互为补充,互为验证,计算结果均满足要求,安全系数较高。

Study on Mechanical Properties of Frozen Curtain for Connecting Passage of Metro

In order to study the construction safety of subway connecting passage,the structural mechanics and the ANSYS finite element software are used to calculate the freezing curtain,and the safety factors of freezing curtain under two kinds of calculation method are obtained.The results show that the maximum flexural tensile stress is 0.721 MPa,the maximum compressive stress is 0.779 MPa,the maximum shear stress is 0.617 MPa,and the maximum displacement is 31.1 mm.The maximum bending stress,maximum compressive stress,maximum shear stress and maximum displacement of pumping station are 0.07 MPa,0.78 MPa,0.192 MPa and 16.4 mm respectively.The results of structural mechanics and numerical simulation are complementary to each other,and the strength and stiffness of the frozen curtain of connecting passage basically meet the requirements of relevant codes.The safety factor of connecting passage is higher.