海洋环境下高桩码头结构整体承载性能演化机理与分析方法研究

High-pile wharf is prone to be damaged and deflection due to structure type, overload, corrosion and soft foundation. In order to keep enough safety reserve in design phase for new wharfs and take preventive reinforcement measures in use phase for service wharfs, the evolution mechanism of bearing behavior should be explored. Reinforcement corrosion and foundation creep are the two main factors influencing the bearing behavior at the same time. Theoretical analysis, physical model testes, numerical simulation and prototype measurement are used to explore the influences of reinforcement corrosion and foundation creep on the bearing capacity of overall high-piled wharf. The computational model of bearing performance evolution under multi-factor synergism is established. The analytical method of overall bearing behavior of high-pile wharf is proposed. And theoretical guidance is provided for safety reserve design, safety monitoring and reinforcement.

由于结构型式、超载、腐蚀、软基等一系列原因，高桩码头结构易发生损伤与变位。为了对新建码头在设计阶段预留足够的安全储备、对在役码头在使用阶段采取相应的预防修复与加固措施，就需探索结构承载性能的演化规律。钢筋锈蚀和地基蠕变是影响海洋环境下高桩码头结构承载性能的两个主要因素，且同时影响。本课题采用理论分析、物模试验、数值模拟和现场原型测量的方法，从高桩码头整体体系的角度研究钢筋锈蚀和地基蠕变对高桩码头结构整体承载性能的影响，建立多因素协同作用下高桩码头结构整体承载性能演变计算模型，提出高桩码头结构整体承载性能分析方法，为码头安全储备设计以及服役期内的安全监测与维修加固提供理论指导。