考虑抗弯刚度不确定性的简支梁桥损伤定位方法 = Damage localization method for simply supported bridge with flexural stiffness uncertainty considered

为了处理主梁抗弯刚度的不确定性,实现简支梁桥主梁的准确损伤定位!通过进行影响线分 析!基于位移影响线二次差值的概念提出了一个损伤定位指标----跨中位移影响线差值指标(DIILMSD), 通过测量移动荷载下主梁跨中的竖向位移增量即可基于DIILMSD指标建立相应的损伤定位方法。研究结果表明:对于局部抗弯刚度具有不确定性的实际主梁,其损伤位置可通过对比损伤前后的DIILMSD数据图形来进行有效的识别,如果某一点(x2=x'+m)和邻近!个点连线的斜 率发生了变化!则说明损伤出现在区间[x',x'+m]或[l- x'- m,l- x' (之内)损伤...

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Bibliographic Details
Main Authors: 王艺霖 Wang, Yi-lin, 张鑫 Zhang, Xin, 安新梅 An, Xin-mei
Other Authors: School of Civil and Environmental Engineering
Format: Article
Language:Chinese
Published: 2015
Subjects:
Online Access:https://hdl.handle.net/10356/107457
http://hdl.handle.net/10220/25482
http://zgglxb.chd.edu.cn/CN/abstract/abstract2000.shtml
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Institution: Nanyang Technological University
Language: Chinese