Simulation Analysis Of Removal Of Temporary Supporting Of Large-span Shallow Triple-arch Subway Station

During the construction of the underground structure,removing the temporary supporting is also a key part . In this paper, the object to be studied is a large -shallow subway station. During removing the temporary supporting of Large-span shallow subway station, there is a lot of power conversion between the supporting structures.At present, in the underground engineering field, structure-load model is widely used. With the development of information technology, a variety of Numerical methods have appeared. Finite element method is the most development of the numerical methods, and has become a powerful tool In the field of underground engineering.In this paper, load structure method is adopted and using large-scale finite element software ansys11.0 to analysis the plane strain model. Because of the"life and death"feature, we"kill"the element to be removed and"activate"the element to be supported. According to the construction step, we get the forces and displacement of every step by simulating the removal process, and adjust the construction steps according to the results. It has some significance.