斜拉桥最优矢量法破损诊断技术初探

Preliminary Approach to Disrepair Diagnosing Technology of Cable-stayed Bridge by Optimizing Vector Method

针对现有大型斜拉桥破损诊断技术所存在的弊端,该文从另一角度提出采用最优矢量法具体确定破损发生的位置及程度;通过构造最优特征矢量φatj,推导出破损判断矩阵D,通过矩阵D判别斜拉桥最可能的破损单元从而达到破损诊断的目的;该文方法为大型斜拉桥在线监测提供了一套可行的破损检测技术,其实用价值值得进一步讨论。

Aiming at the abuse existing in the disrepair diagnosing technology of the present large-sized cable-stayed bridge,the article puts forward to use the optimizing vector method to make sure the detail position and extent of the disrepair from the another angle.Through building the optimizing characteristic vector φatj,the article educes the disrepair judging matrix D,and using the matrix D,distinguishes the most possible disrepair unit of the cable-stayed bridge so as to reach the aim of disrepair diagnosis.The method in the article is a set of feasible disrepair inspecting technology to be provided for the on-line monitor of the large-sized cable-stayed bridge.Its practical value is good for the further discussion.