Damage Identification of Steel Trestle Based on Modal Flexibility Matrix

杨开荣; 周晶; 冯新

doi:10.13409/j.cnki.jdpme.2011.06.007

您当前的位置：

首页 >

文章列表页 >

Damage Identification of Steel Trestle Based on Modal Flexibility Matrix

更新时间：2025-12-11

- Damage Identification of Steel Trestle Based on Modal Flexibility Matrix
- Vol. 31, Issue 6, Pages: 642-647(2011)
- 作者机构：
- 作者简介：
- 基金信息：
- DOI：10.13409/j.cnki.jdpme.2011.06.007
  CLC： 441.4
- Published：2011
- 稿件说明：
移动端阅览
[1]杨开荣,周晶,冯新.基于柔度矩阵法的钢栈桥损伤识别[J].防灾减灾工程学报,2011,31(06):642-647.

杨开荣, 周晶, 冯新. Damage Identification of Steel Trestle Based on Modal Flexibility Matrix[J]. 2011, 31(6): 642-647.
[1]杨开荣,周晶,冯新.基于柔度矩阵法的钢栈桥损伤识别[J].防灾减灾工程学报,2011,31(06):642-647. DOI： 10.13409/j.cnki.jdpme.2011.06.007.

杨开荣, 周晶, 冯新. Damage Identification of Steel Trestle Based on Modal Flexibility Matrix[J]. 2011, 31(6): 642-647. DOI： 10.13409/j.cnki.jdpme.2011.06.007.

摘要

根据以往模态柔度损伤指标的研究成果

建立了模态柔度差曲率和模态柔度曲率差这2种结构损伤识别指标。通过对一个百米钢栈桥最容易发生损伤的下弦梁进行各种损伤工况下的数值模拟研究

比较分析了这2种结构损伤指标的损伤识别效果。并且在钢栈桥2根下弦梁都有损伤的情况下

对两者之间损伤识别效果的相互影响进行了研究。研究结果表明

本文提出的2种损伤识别指标

对空间复杂钢栈桥的易损下弦梁都有很好的损伤识别效果

2根下弦梁的损伤识别具有较好的独立性。

Abstract

According to the previous research achievement of modal flexibility damage indicators

two indicators

the Modal Flexibility Difference Curvature and the Modal Flexibility Curvature Difference

are constructed.The damage identification effect of the two indicators are compared by a numerical simulation of a 100 meter-long steel trestle when various damage cases are settled in different positions of the bottom chord beams of the steel trestle.In addition

the influence of damage identification effect on either bottom chord beam when the other one is also damaged

is taken into consideration in this paper.Results indicate that the two indicators are sensitive to the damage to both bottom chord beams which are the damageprone parts of the trestle

and the damage identification of either bottom chord beam is unrelated to the damage cases of the other one.

关键词

Keywords

references

基于模态柔度差曲率的梁结构损伤识别 [J]. 李胡生,宋子收,周奎,刘潇轶. 江南大学学报(自然科学版) . 2010(01)

基于柔度的桁架结构损伤定位方法 [J]. 冯新,范颖芳,周晶. 计算力学学报 . 2006(05)

基于模态柔度曲率的损伤检测方法 [J]. 曹晖,Michael I.Friswell. 工程力学 . 2006(04)

Sensitivity Study for Vibrational Parameters Used in Damage Detection [J] . Jun Zhao,John T. DeWolf. Journal of Structural Engineering . 1999 (4)

Flexibility by Multireference Impact Testing for Bridge Diagnostics [J] . Madhwesh Raghavendrachar,Ahmet E. Aktan. Journal of Structural Engineering . 1992 (8)

Views

188

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Application of Element Modal Strain Energy Method in Damage Identification of Transmission Tower

Experimental Study on Influence Factor of Frequency Method for Testing Axial Force of the Members of Spacial Truss Structures

Seismic Analysis of Large-scale Wind Power Structure in Coastal Areas

Damage Identification for Corroded Steel Pile Casing of the Cross-ocean Bridge

Research on Dynamic Performance of String Reticulated Mega-structure

Related Author

贾子光

李东升

李宏男

周翠

林友新

张晶

殷志祥

诸葛萍

Related Institution

No data

⁰