(湖南大学土木工程学院  长沙 410082)
【提要】  对用高性能复合砂浆钢筋网薄层加固的混凝土构件进行了界面剪切试验研究，试验包括16个应用了销钉的试件和4个没有应用销钉的对比试件。探讨了在植有销钉的情况下，销钉与复合砂浆加固层协同抵抗粘结抗剪破坏的受力机制及销钉数量、直径、基本锚固深度、间距对抗剪能力的影响。试验表明，销钉大幅提高界面粘结的抗剪能力及延性。根据试验结果，提出了植有销钉的构件界面粘结抗剪能力计算方法。
【关键词】  混凝土结构  钢筋网复合砂浆加固  植筋锚固  粘结抗剪
Study of the Pins in Reinforced Concrete Beam Strengthened with Ferrocement/Shang Shouping, Long Lingxiao, Zeng Linghong(Civil Engineering College of Hunan University, Changsha 410082, China)
Abstract:Based on the experiments of 4 RC specimens strengthened with pins and 4 specimens without pins, the felted capability of the ferrocement with wire meshes is analyzed. The influences of the pins′ amount, diameter, depth and distance on the felted capability of ferrocement are discussed. The test results show that the pins  improve the capacity of mucosity and ductility. A calculation method for the mucosity capacity of the block is presented.
Keywords:RC structures；ferrocement；postembedding technology；bonding and shearing
*博士点专项项目(721201004)；湖南省自然科学基金资助(02JJY3043)。