The section K0+785-K0+988 on the north shore of the Dalian Bay immersed tunnel,which is higher than the original seabed surface,is susceptible to ship collision risks and requires anti-collision measures.Taking into account factors such as construction difficulty,environmental protection,and cost,a permeable gravity pier foundation composed of circular caissons,column piles,and cast-in-place piers was proposed as the anti-collision structure,while meeting the requirements of the construction period.Combined with the structural form and main loads of the anti-collision pier,the overall stability of the anti-collision pier structure and the bearing capacity of the column piles were analyzed and calculated using finite element method and specification method.The results show that the permeable gravity pier anti-collision structure can meet the requirements of engineering use in all aspects,and can provide design reference for the construction of similar structures in the future.
维普
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