| 基于应变模态的桁架结构损伤识别 |
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| 引用本文： | 刘汉青,杨维民. 基于应变模态的桁架结构损伤识别[J]. 甘肃科学学报, 2011, 23(3): 136-138 |
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| 作者姓名： | 刘汉青 杨维民 |
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| 作者单位： | 1. 兰州理工大学土木工程学院,甘肃兰州,730050
2. 甘肃省审计厅固定资产投资审计处,甘肃兰州,730000 |
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| 基金项目： | 甘肃省自然科学基金(0916RJZA024); 甘肃省教育厅研究生导师基金项目(1004ZTC007) |
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| 摘 要： | 选用桁架结构作为研究对象,对一简支桁架建立仿真模型,通过单元刚度的减小模拟损伤变化,用节点位移转变为单元应变的方法,对桁架结构进行损伤识别.经过试验研究,验证了一阶相对应变模态对结构损伤识别的有效性.
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| 关 键 词： | 桁架结构 应变模态 损伤识别 |
Damage Identification of Truss Structure Based on Strain Model |
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| LIU Han-qing,YANG Wei-min. Damage Identification of Truss Structure Based on Strain Model[J]. Journal of Gansu Sciences, 2011, 23(3): 136-138 |
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| Authors: | LIU Han-qing YANG Wei-min |
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| Affiliation: | LIU Han-qing1,YANG Wei-min2(1.College of Civil Engineering,Lanzhou University of Science and Technology,Lanzhou 730050,China,2.Department of Fixed Assets Investment,Gansu Audit Bureau,Lanzhou 730000,China) |
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| Abstract: | Taking the truss structure as the research object,a simply-supported truss structure is modeled,and damage changes are simulated by reducing the unit stiffness.The nodal displacements are turned into unit strain changes to identify the damage performance of truss structure.The validity of the first-order relative strain model is proved by experiments. |
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| Keywords: | truss structure strain model damage identification |
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