| 空间钢框架支撑结构损伤定位分析 |
| |
| 引用本文： | 徐龙河,杨冬玲,李忠献,钱稼茹.空间钢框架支撑结构损伤定位分析[J].天津大学学报(自然科学与工程技术版),2012(7):577-581. |
| |
| 作者姓名： | 徐龙河 杨冬玲 李忠献 钱稼茹 |
| |
| 作者单位： | [1]北京交通大学土木建筑工程学院,北京100044 [2]天津大学建筑工程学院,天津300072 [3]清华大学土木工程系,北京100084 |
| |
| 基金项目： | 基金项目：国家自然科学基金重大研究计划重点支持项目（90815025,90715032）;国家自然科学基金青年科学基金资助项目（50808013）. |
| |
| 摘 要： | 提出了一种基于结构振动特性的损伤指标定位方法，对一空间复杂模型结构进行模拟损伤定位分析，考虑了2种损伤状态7种损伤模式，采用环境激励方式，利用有限的测试信息对不同的损伤模式进行分析，结果表明，将损伤指标同结构自身特性、识别的模态参数结合起来综合考虑，能够对空间复杂结构可能损伤的位置给出合理的估计．
|
| 关 键 词： | 空间复杂结构 损伤指标 损伤定位 环境激励 |
Damage Localization Analysis to Spatial Steel Braced-Frame Structure |
| |
| XU Long-he,YANG Dong-ling,LI Zhong-xian,QIAN Jia-ru.Damage Localization Analysis to Spatial Steel Braced-Frame Structure[J].Journal of Tianjin University(Science and Technology),2012(7):577-581. |
| |
| Authors: | XU Long-he YANG Dong-ling LI Zhong-xian QIAN Jia-ru |
| |
| Institution: | 1. School of Civil Engineering, Beijing Jiaotong Universigy, Beijing 100044, China; 2. School of Civil Engineering, Tianjin University, Tianjin 300072, China; 3. Department ofCivilEngineering, TsinghuaUniversity, Beijing 100084, China) |
| |
| Abstract: | A vibration-based damage index localization method was proposed, and damage localization analysis of a complicated spatial model structure was conducted. The 7 known damaged cases including： two kinds of damage states, brace damage cases and joint damage cases, were considered, and the different damage patterns were ana- lyzed according to the limited number of measurements from ambient excitations. Results indicate that reasonable estimation for the possible damage location of the complicated spatial structure can be derived by combining the dam- age index with the characteristics of the analytical model and the identified modal characteristics. |
| |
| Keywords: | spatial complicated structure damage index damage localization ambient excitation |
| 本文献已被 维普 等数据库收录！ |
|
