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單寶華  趙仁孝  馬世英  歐進(jìn)萍
（哈爾濱工業(yè)大學(xué)建筑工程學(xué)院  哈爾濱 150090）

[提要]  混凝土空心砌塊房屋的溫度裂縫是影響其結(jié)構(gòu)性能的主要因素。采用散斑圖像相關(guān)數(shù)字技術(shù)對(duì)混凝土空心砌塊房屋溫度裂縫過程進(jìn)行非接觸監(jiān)測(cè)，得到了混凝土空心砌塊房屋的溫度裂縫變形曲線。整個(gè)測(cè)量過程簡(jiǎn)便直接，試驗(yàn)結(jié)果表明該方法對(duì)溫度場(chǎng)作用下結(jié)構(gòu)反應(yīng)的監(jiān)測(cè)是可靠和適用的，有望成為工程中研究溫度場(chǎng)作用下結(jié)構(gòu)變形的有效試驗(yàn)方法。
[關(guān)鍵詞]  混凝土空心砌塊  溫度裂縫  散斑圖像相關(guān)  重心算法  圖像處理

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