Abstract :
With the progress of technology, people develop many protection of foundation pit is also more and more, at the same time for multi-pivot of foundation pit engineering are also put forward higher requirements. In this paper, the dynamic simulation of protection of excavation structure simulation analysis, get the change of the stress and displacement of excavation structure, through dynamic simulation results can be seen that: Multi-pivot of foundation pit with the increase of excavation depth, displacement and stress of the supporting structure are changing, due to reasons such as unloading rebound, foundation pit is easy to produce certain uplift, and with the increase of the depth of the uplift degree increases, will eventually stabilise. Due to uplift can lead to loss of stability of the protection of excavation structure, so should take certain measures to control, in order to achieve the purpose of safety construction.
