（西安建筑科技大学土木工程学院， 西安 710055）

［摘要］通过对28个经酸雨喷淋-光照腐蚀循环的再生混凝土砖砌体抗剪试件进行沿通缝截面的抗剪试验的研究，提出了再生混凝土砖砌体抗剪强度平均值计算公式，建立了再生混凝土砖砌体的抗剪强度酸雨损伤衰减模型。研究结果表明：酸雨环境对再生混凝土砖砌体的抗剪强度影响较大；随着喷淋-光照腐蚀循环次数的增多，再生混凝土砖砌体的抗剪强度表现出先增后降的趋势，且前期增长表现不明显，后期下降幅度较大。

［关键词］再生混凝土砖砌体； 酸雨； 喷淋-光照腐蚀循环； 抗剪性能； 衰减模型

中图分类号：TU502-6文献标识码：A文章编号：1002-848X(2018)14-0103-05

Experimental study on shear behavior of recycled concrete brick masonry under acid rain environment

 Zhang Qiushi, Zheng Shansuo,  Song Zhemeng, Niu Lihua,  Cheng Minchao, Zhu Lanqi

(College of Civil Engineering, Xi′an University of Architecture and Technology, Xi′an 710055， China)

Abstract:According to the study of  the shear strength experiment   along the straight joint of 28 recycled concrete brick masonry specimens under spray-illumination corrosion cycle, the calculation formula of average shear strength value of recycled concrete brick masonry was put forward, and a shear strength attenuation model of recycled concrete masonry under acid rain corrosion damage was established. The research results show that acid rain environment has great effect on shear strength of recycled concrete masonry. With increasing times of spray-illumination corrosion cycles, the shear strength of recycled concrete masonry increases first and then decreases. The previous increment is not significant, but the later decrease is quiet great.

Keywords:recycled concrete brick masonry; acid rain; spray-illumination corrosion cycle; shear behavior; attenuation model

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国家科技支撑计划（2013BAJ08B03），国家自然科学基金（51678475），陕西省重点研发计划（2017ZDXM-SF-093），陕西省教育厅产业化项目（2017JC15）。

作者简介：郑山锁，博士，教授，博士生导师，Email:zhengshansuo@126.com。