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（西安建筑科技大學(xué)土木工程學(xué)院， 西安 710055）

［摘要］通過對(duì)28個(gè)經(jīng)酸雨噴淋-光照腐蝕循環(huán)的再生混凝土磚砌體抗剪試件進(jìn)行沿通縫截面的抗剪試驗(yàn)的研究，提出了再生混凝土磚砌體抗剪強(qiáng)度平均值計(jì)算公式，建立了再生混凝土磚砌體的抗剪強(qiáng)度酸雨損傷衰減模型。研究結(jié)果表明：酸雨環(huán)境對(duì)再生混凝土磚砌體的抗剪強(qiáng)度影響較大；隨著噴淋-光照腐蝕循環(huán)次數(shù)的增多，再生混凝土磚砌體的抗剪強(qiáng)度表現(xiàn)出先增后降的趨勢(shì)，且前期增長表現(xiàn)不明顯，后期下降幅度較大。

［關(guān)鍵詞］再生混凝土磚砌體； 酸雨； 噴淋-光照腐蝕循環(huán)； 抗剪性能； 衰減模型

中圖分類號(hào)：TU502-6文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：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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國家科技支撐計(jì)劃（2013BAJ08B03），國家自然科學(xué)基金（51678475），陜西省重點(diǎn)研發(fā)計(jì)劃（2017ZDXM-SF-093），陜西省教育廳產(chǎn)業(yè)化項(xiàng)目（2017JC15）。

作者簡(jiǎn)介：鄭山鎖，博士，教授，博士生導(dǎo)師，Email:zhengshansuo@126.com。