The shallow buried section on the north shore of Dalian Bay immersed tunnel adopts concrete piers and steel tension rod as anti-collision measures with a limited anchorage length due to construction conditions.The bond-slip constitutive models between steel bar and concrete were analyzed,and main influence parameters and values were determined based on experimental data of bonded anchorage performance of reinforced concrete in relevant literature.Considering the existing design requirements and offshore construction conditions,finite element software was used to conduct numerical analysis of the bond and slip between steel bar and concrete,and compared with existing experimental data to optimize the anchorage length and anchorage form of the steel tension rods,and further rationalize the design scheme.The results of finite element software agree well with the test results and provide reference for similar engineering design and subsequent study.
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