Numerical Analysis of Anti-overturning of a Steel Boxed Cofferdam Based on FEA
Independent anti-collision piers are added at the upstream and downstream positions of the piers on both sides of a long-span prestressed concrete bridge in Jiangmen City,Guangdong Province.The double-wall steel cofferdam of Larsen steel sheet pile was used during the construction of the anti-collision pier.In order to investigate the safety and rationality of the structure of the cofferdam during the pumping process,the finite element software Midas FEA was used to simulate the steel cofferdam of the anti-collision pier under the analysis background of pumping in the high water level environment.The stress and deformation characteristics were analyzed,and the overall stability of the steel cofferdam was checked.Through the calculation,it can be concluded that the steel cofferdam structure has good anti-overturning performance,and the bonding force and the strut-and-tie support force play an important role in anti-overturning.
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