单宝华  赵仁孝  马世英  欧进萍
（哈尔滨工业大学建筑工程学院  哈尔滨 150090）

[提要]  混凝土空心砌块房屋的温度裂缝是影响其结构性能的主要因素。采用散斑图像相关数字技术对混凝土空心砌块房屋温度裂缝过程进行非接触监测，得到了混凝土空心砌块房屋的温度裂缝变形曲线。整个测量过程简便直接，试验结果表明该方法对温度场作用下结构反应的监测是可靠和适用的，有望成为工程中研究温度场作用下结构变形的有效试验方法。
[关键词]  混凝土空心砌块  温度裂缝  散斑图像相关  重心算法  图像处理

The concrete cavity block building is effected mainly by the temperature crack, so a speckle image correlation digital technique is introduced to monitor the temperature crack of concrete cavity block building, and the temperature crack distortion curve of the louilding is obtained. The whole measuring process is rather simple and direct, experiment result indicates that this method is reliable and applicable for measuring the response of structure in temperature field. And it will be a valid experiment method for measuring structure deformation in temperature field.
Keywords: concrete cavity block; temperature crack; speckle image correlation; barycenter arithmetic; image processing