基于残余力向量的高桩码头基桩损伤诊断研究

对于有上部结构的髙桩码头基桩损伤诊断研究，目前国内外还没有提出一种实用可行的诊断方法。根据振动微分方程，推导出残余力向量的表达式，定义残余力向量绝对值作为损伤诊断指标。以一高桩码头排架为研究对象，在多种工况下，基于残余力向量法，模拟诊断排架基桩的损伤。数值模拟结果表明：以残余力向量绝对值作为诊断指标，对损伤较为敏感，只需结构的低阶模态，就可以准确快速地识别出结构的损伤，为髙桩码头基桩损伤诊断提供了一种新的思路。

Study on Damage Diagnosis for High-piled Wharf Piles Based on Residual Force Vector

 For the high-piled wharf piles existing superstructure ,It has not been proposed that a method is practical and feasible at home and abroad. According to the vibration differential equation, the residual force vector expression is deduced. The absolute value of residual force vector is defined as a damage diagnosis index. By establishing high-pile wharf frame finite element model and using the residual force vector method, run the numerical simulation for the pile of high-pile wharf damage diagnosis in a variety of conditions．Numerical simulation results show that it is sensitive to diagnose the damage of the high-piled wharf piles based on residual force vector. In the low order modes, structural damage can be identified rapidly and accurately. It provides a new idea for  diagnosis of high-piled wharf piles damage .