郭樟根  孙伟民  叶燕华  李利群  韩晓健 （南京工业大学土木工程学院 210009）

[提要] 研究了砌体结构裂缝的种类与成因，对砌体房屋的温度裂缝进行了分析与计算，进行了预应力混凝土小型空心砌块带窗洞砌体的单调水平荷载试验，研究了预应力砌体的开裂位置、开裂荷载及抗裂性能。研究结果表明，预应力改变了砌体结构的开裂位置，显著提高了结构的开裂荷载，有效地改善了砌体结构的抗裂性能。同时探讨了用预应力来控制砌体房屋温度裂缝的可行性。
[关键词] 温度裂缝预应力砌体混凝土小型空心砌块抗裂性能

The cause of formation and various kinds of cracks in masonry construction are researched, and the temperature cracks of masonry are analyzed and calculated. Through the transverse static loading test on prestressed small-sized concrete hollow block masonry models,crack-resistance behavior is analyzed. The results of the test clearly show that after being prestressed the material property of masonry is changed, and the prestressed masonry wall's capacity of crack-resistance is improved. The control technique of masonry's temperature-crack of prestressing the masonry is illustrated.
Keywords: temperature crack; prestressed masonry; small-sized concrete hollow block; crack-resistance behavior

    　参  考  文  献
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