The Bracing System Finite Element Analysis Considering The Excavation Process

By 4 months' observation to internal force and displacement of a engineering example_, some shortcoming is founded in the current design of shoring system at the same time a new method is created. The new method taking into account the process of excavation can overcome some unsafe factors of current design and deepen the design, so it has the merit of higher practical value and social benefit.In order that it be easily accepted by all civil engineers, the international general finite element program (ANSYS) is used as a tool to compare with the observation result in site and compare the difference among Qimstar(Tongji University), SAPER and ANSYS. On the other hand, the new information of this field is introduced, especially in the ellipse plane bracing system.In the end, by contrast the calculating results with the experiment results; it proves that the new method is correct. Some suggestion and important conclusion of deformation calculation of shoring system of a deep foundation pit is brought up.