（1 长安大学建筑工程学院， 西安 710061； 2 西南科技大学土木工程与建筑学院， 绵阳 621010）

［摘要］通过对8组24个立方体试件的剪切试验，研究了透水混凝土加铺层与既有水泥混凝土粘结面的抗剪性能，并分析了不同水泥混凝土开孔率以及透水混凝土强度对粘结面抗剪强度的影响。结果表明：试件破坏均出现在粘结面，且破坏形式均为脆性破坏，表明透水混凝土与水泥混凝土的粘结面是一个薄弱面；随着开孔率的增大，粘结面抗剪强度逐渐提高，其中开孔试件的粘结面抗剪强度相较未开孔试件最高提高达47-02%；随着透水混凝土强度的提高，粘结面抗剪强度有所提高，且提高幅度在20%以内。通过方差分析表明，水泥混凝土开孔率和透水混凝土强度的交互作用对粘结面抗剪强度影响极不显著，而开孔率对粘结面抗剪强度起主要控制作用。研究成果可以为透水混凝土改造既有水泥混凝土路面的工程实践提供参考。

［关键词］透水混凝土； 路面改造； 粘结面； 抗剪强度

中图分类号：TU528文献标识码：A文章编号：1002-848X(2018)22-0102-05

Experimental study on shearing property of bonding surface formed by using permeable concrete to transform the existing cement concrete pavement

Zhang Zhaoqiang1,2, Wu Xianzhe2, Yao Yong2, Chen Daiguo2

(1 School of Civil Engineering, Chang′an University,  Xi′an 710061, China; 2 School of Civil Engineering and Architecture, Southwest University of Science and Technology, Mianyang 621010, China)

Abstract:The shear test was carried on 24 cube specimens of 8 groups. The shearing property of bonding surface formed by using permeable concrete to transform the existing cement concrete pavement was studied, and the influencing regulations of different drilling proportions and  permeable concrete strength on new and old concrete bonding shear property were analyzed. The results show that the damage of the specimens is appear on the bonding surface, and the failure modes are brittle failure. It′s proved that the bonding surface between permeable concrete and the cement concrete is an unsubstantial interface. The shear strength of bonding surface tends to enlarge with the increase of drilling proportion, and compared with undrilled specimens, the shear strength of drill specimens can most increase 47.02%. The shear strength of bonding surface also tends to enlarge with the increase of the permeable concrete strength, and the increased range come within 20%. The  variance analysis  shows that the interaction of drilling proportions and permeable concrete strength has no effect on shear strength of interfacial bonding between the permeable concrete and the cement concrete, the drilling proportions play a leading role. The research results can be used in the actual project of pavement reconstruction.

Keywords:permeable concrete; pavement reconstruction; bonding surface; shear strength

*国家自然基金资助项目(51308479)，绵阳市科技局资助项目(14S-02-1),四川省科技创新苗子工程资助项目(2016104)，西南科技大学研究生创新基金资助项目(17ycx107)。

作者简介：张兆强，博士，副教授，Email:52282843@qq.com。