摘要
对基于振动特性的混凝土结构损伤识别方法进行综述，提炼出损伤识别指标的敏感性不足、非线性分析困难、适用范围有限、实验验证方法单一、数值模拟不合理等不足。进而在理论和技术的可行性分析基础上，将耗散结构和信息熵理论系统引入到混凝土结构损伤识别领域中，通过构造信息熵指标来反映系统损伤的无序程度，在传感器的布点优化、损伤位置的确定、损伤程度的量化和处理结构损伤上显示出较大的潜力，有望利用信息熵理论来部分解决目前存在的混凝土结构损伤领域的难点，为混凝土结构健康监测系统的建设和运行提供科学依据和技术支撑
Abstract
A general summary and review of state-of-the-art of vibration-based RC structural damage detection is firstly presented. Various disadvantages of damage detection methods are abstracted, such as low sensitivity, inability of non-linear analysis, limitation of application scope, incomplete validation methods and unreasonable numerical-simulation. Then, the thought of dissipative structure and information entropy theory are introduced into the study of concrete damage detection based on the analysis of feasibility on the theory and technology and through establishing the information entropy index, the disorder extent of system’s damage is presented. Furthermore, it is showing a great potential in following areas: optimal arrangement of sensor location and identification of damage location and extent, as well as treatment of damage. Therefore, information entropy theory is probably a promising method for partly improving damage identification technology, as well as supporting scientific evidence and technical support in construction and operation of Structural Health Monitoring system
关键词
混凝土结构 损伤识别 传感器布置 振动特性 耗散结构 信息熵
{{custom_keyword}} /
Key words
concrete structures /
damage identification /
arrangement of sensor location /
dynamic characteristics /
dissipative structure /
information entropy
{{custom_keyword}} /
刘国华;吴志根.
引入信息熵理论的砼结构损伤动力识别新思路[J]. 振动与冲击, 2011, 30(6): 162-171
Guohua Liu;Zhigen Wu.
New thought on the damage dynamic identification technology of the RC structures with information entropy theory[J]. Journal of Vibration and Shock, 2011, 30(6): 162-171
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
{{custom_fnGroup.title_cn}}
脚注
{{custom_fn.content}}
PDF(825 KB)
