| 数字图像相关方法在土木测试领域中的实验研究 |
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| 引用本文： | 孙伟,何小元.数字图像相关方法在土木测试领域中的实验研究[J].南京航空航天大学学报,2009,41(2). |
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| 作者姓名： | 孙伟 何小元 |
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| 作者单位： | 1. 南京航空航天大学航空宇航学院,南京,210016
2. 东南大学工程力学系,南京,210096 |
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| 摘 要： | 针对传统接触式测试方法(如电测法等)在土木工程领域中的局限性,开展了数字图像相关(Digital image correlation,DIC)方法在该测试领域的应用研究.采用橡胶带的拉伸实验来验证DIC方法的测量精度,具体的实验测试内容包括:基于空域和频域相结合的混合相关法,开展了建筑膜材的双轴拉伸实验,测量了膜材的力学参数;基于仿射变换的相关迭代法,开展了钢管混凝土框架梁柱连接模型的转角测量与分析实验,测量了加强环式连接的弯矩转角关系;基于时间序列DIC和高速摄影成像技术,开展了自由振动状态下拉索模型的动力学参数识别的实验研究.实验结果验证了这一新型检测手段用于测试建筑材料及结构的力学性能的可靠性与精度.
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| 关 键 词： | 相关方法 建筑膜材 钢管混凝土框架粱柱连接 拉索模型 |
Experimental Studies on Application of Digital Image Correlation in Measuring Field of Civil Engineering |
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| Sun Wei,He Xiaoyuan.Experimental Studies on Application of Digital Image Correlation in Measuring Field of Civil Engineering[J].Journal of Nanjing University of Aeronautics & Astronautics,2009,41(2). |
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| Authors: | Sun Wei He Xiaoyuan |
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| Institution: | 1.College of Aerospace Engineering;Nanjing University of Aeronautics & Astronautics;Nanjing;210016;China;2.Department of Engineering Mechanics;Southeast University;210096;China |
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| Abstract: | Due to the limitation of the conventional testing method,such as electrometric method in the field of civil engineering,experimental studies on the application of the technique of digital image correlation(DIC) are proposed.The accuracy of DIC is validated by a tensile test of a rubber band.Using the hybrid method of spatial DIC and spectrum DIC,the biaxial tension of building membrane materials is conducted and the mechanical parameters are evaluated.Using the iterative correlation method based on the affi... |
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| Keywords: | correlation methods building membrane materials connections for the concrete-filled steel tube column to the beam frames cable model |
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