地震作用下高桩码头安全性评价

为了研究高桩码头在使用过程中遭受地震灾害的影响,结合工程实际,基于数值模拟分析技术,采用瞬态动力学时程分析法对地震下高桩码头上部结构裂纹扩展情况进行分析。提出基于裂纹扩展深度和裂纹分布范围两个指标的高桩码头地震灾害下上部结构4级安全性评价方法,并通过不同地震等级下裂纹扩展分析进行验证。结果表明:不同地震等级下采用4级安全评价方法对高桩码头进行安全评估是合理可行的。可以为不同地震等级下码头的受损进行评估,为提前预测地震灾害对码头的损伤程度,改进设计提供科学依据。

The safety evaluation of high-piled wharf under earthquake action

In order to study the piled wharf in the influence of earthquake disasters in use process, combination with the engineering practice, based on the numerical simulation analysis technology, the transient dynamic analysis of earthquake under the course calendar piled wharf upper structure crack propagation conditions is analyzed. Based on crack propagation depth and the distribution of crack two indicators of piled wharf upper structure under seismic disasters 4 level security evaluation method, and validated by the crack propagation analysis under different earthquake magnitude. Results show that under different earthquake magnitude 4 safety assessment methods for safety assessment of piled wharf is feasible. To assess the damage to the wharf under different earthquake magnitude, to predict earthquake disasters in advance to the damage degree of wharf, provide a scientific basis for improving design.