Numerical Analysis On Segment Type Reinforcement Of Underground Continuouswall In Handan

In order to better use separated sections of reinforcement of underground continuous wall in deep foundation pit supporting engineering. According to an engineering example in Handan City, based on the calculation of Lizheng deep foundation pit, use the FLAC3 D software to simulate and analyze the examples, and compares the measured data and simulated data to verify the correctness of the modeling and rationality. The research contents include:(1)Analyzes the supporting theory of segment type reinforcement of underground continuous wall and describes the method of checking the stability of deep foundation pit.(2)The numerical simulation software FLAC3 D are introduced and select the suitable engineering segment type reinforcement of underground continuous wall supporting form elastic-plastic model, and with the related structural unit.(3)According to the actual engineering numerical model is established, which takes into account the interaction between the deformation, internal force of soil anchor and monolithic continuous wall, make the model accords with the actual situation.(4)Simulate and analysis the foundation of the soil stress, soil deformation around the foundation pit excavation, ground settlement, foundation pit bottom rebound and uplift. At the same time, analyzes internal force and deformation of the reinforced wall and the unreinforced wall, in order to verify the deformation coordination between them. And, to ensure the stability of the entire wall, causes the singles unreinforced wall not produce too large deformation to lead instability and failure of the entire wall.(5)Accoding to the comparison of the measured value and simulation data, illustrate the model with the correctness and rationality situation.The results of this study can be rational use of similar conditions of the project, to provide a reference for reinforcement of underground continuous wall and its design.