【摘要】 在施工控制中,钢支撑监测数据处理中常常存在一些误区。根据壳体理论对钢支撑受力机理进行分析和简化计算,得出钢支撑在轴力和弯矩共同作用下,轴向正应力呈线性分布。结合工程实例,提出钢支撑监测数据的处理方法,并讨论了弯矩在分析基坑稳定性中的作用。采用ABAQUS非线性有限元分析程序,通过数字模拟对数据处理的结果反分析,以此验证简化计算的合理性。更多还原

【Abstract】 When analyzed the steel support monitoring data in construction control,there are some misconceptions.On the basis of theory analysis,it is deduced that the axial stress is linear distribution,when the steel support is loaded by axial force and moment.It is presented an analytical approach to treating monitoring data of steel support in an engineering example.And it is also discussed the effect of moment in analyzing excavation stability.Through using the nonlinear finite element program ABAQUS and the method of back analysis,the rationality of the simplified calculation is verified.更多还原