The Feasibility Analysis of Steel Support Instead of Concrete Support
AbstractIn the construction of a subway deep foundation pit, The safety of the retaining structure of foundation pit plays a vital role.The article is based on mingguang road of HeFei subway station. In the process of construction,because the station 3gateway is used as unearthed mouth, the first reinforced concrete supporting of the original plan can not be achieved,change to steel support.Through the finite element analysis software MIDAS GTS\NX,established two-dimensional model for numerical simulation,analyze the deformation of the retaining structure and the surface subsidence.The results show that:The first line of support used steel support instead of the reinforced concrete support is little effect on the value of the lateral retaining structure,the effect of the reinforced concrete support to control the surface subsidence is better than steel support.The result can provide the basis for change of similar projects in the future.
Deep foundation pitUnderground diaphragm wallGround surface settlementInner support
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