Example Analysis Of Steel Support And Concrete Support Effect

Deep foundation pit engineering plays a more and more important role in modern urban development.So how to control the deformation of foundation pit and make the foundation pit engineering safe and economy has become the primary problem.The support for the influence of foundation pit deformation is mainly studied in this paper.The deep foundation pit model of Wuhan Metro Line 2 station Pan Longcheng road is built with the software PLAXIS for numerical analysis of geotechnical.The correctness of model is verified by comparing calculated value of the internal force and deformation with monitoring data.The feasibility of steel support instead of reinforced concrete construction scheme is supported by changing the parameters of support in the model.The main work and research contents of this paper include:(1)About the develop of deep foundation pit at home and abroad,the research status of support axial force of deep foundation pit,the research direction and content of support.(2)About the basic theory of deep foundation pit support system,the advantages and disadvantages of steel support and reinforced concrete support,their installation steps and common failure modes.(3)About establishing the two-dimensional model of deep foundation pit engineering for Wuhan Metro Line 2 station Pan Longcheng road with the software PLAXIS for numerical analysis of geotechnical,and proving the correctness of the model and the rationality of the parameters by comparing the actual monitoring value with the calculated value of pit supporting wall horizontal displacement and the support axial force(4)About studying the influence of different stiffness of steel support on the foundation pit,and exploring the feasibility of steel support instead of concrete support program to provide a basis for the construction with PLAXIS software.