动-静测试相结合的损伤识别方法在砌体结构中的应用

Masonry Structural Damage Identification Using Static Test Data and Dynamic Test Data

目的研究动-静测试相结合的损伤识别方法在砌体结构中应用的可行性.方法基于模型拟静力试验及脉动测试,利用参数互补校正法识别结构动态特性,并利用等效体积单元法进行空间砌体结构模型的有限元分析,发展应用误差信号匹配技术,提出采用位移及频率定义损伤识别指针.根据预测数据与实测数据的差异,判定砌体结构的损伤部位.结果参数互补校正法能有效识别结构的动态参数;依据有限元分析及实测得到的位移、频率定义的损伤识别指针能有效识别出结构的破损部位.结论动-静测试相结合的损伤识别方法能够在砌体结构中应用,识别结果与试验现象具有良好的一致性.

The pseudo-static experiment and pulsating test are performed with a three-story masonry of half scale model, and the inter-revising method is employed on identifying the inherent frequencies and mode shapes, the representative volume element （RVE） is adopted for simulating non-linear analysis of spatial masonry structure. Then, based on signature-matching technique, a new damage identifiation method is proposed for masonry structural with static and dynamic test data. Which is improved through a proper discrepancy definition of measured damage data and predicted damage data, and the change of displacement and natural frequencies are employed effectively as index in the damage identification. Analysis and identification results are given to demonstrate the validation of the identification method.