【作者】 崔士起； 姜丽萍； 刘文海；

【Author】 Cui Shiqi~1 Jiang Liping~1 Liu Wenhai~2 Shandong Provincial Academy of Building Sciences,Jinan,250031,2 Si Shui Architectural Engineering Quality Surveillance Station,Si Shui,273200

【机构】 山东省建筑科学研究院； 泗水县建筑工程质量监督站；

【摘要】 在表面嵌固法中,嵌固板条能否发挥其抗拉能力的关键,在于嵌固板条与混凝土表层是否具有足够的黏结强度。本文采用试验的方法,研究了嵌固板条与混凝土基体的黏结强度和破坏情况,可以为采用表面嵌固法时嵌固板条的锚固长度设计提供一定的参考;本次试验的破坏形态均为嵌固材料从结构胶层拔脱,发生滑移破坏,造成黏结失效。黏结强度主要与结构胶自身的黏结强度和嵌固材料表面的粗糙程度有关,基材混凝土的强度对黏结强度的影响不大;本文通过理论分析,说明了嵌固板条施工时应完全埋入混凝土的表层,以减小嵌固板条剪应力的梯度变化,使之受力更趋均匀。更多还原

【Abstract】 When using Near-surface Mounted Method,it is the key that sufficient bond strength between the tensile material and concrete.In this paper,test method is used to study the bond strength and destruction with near-surface method(NSM) in concrete structure,a reference is also provided to determine the tension anchorage length when using NSM.The failure mode in this experiment is that the tensile material was pulling off from the Structural adhesives,sliding failure occurred,causing bonding failure.Adhesive bond strength is related to structural adhesives and surface roughness of the tensile materials,the strength of concrete has little effect on the bond strength.Through theoretical analysis,this paper Illustrates that tensile materials should be completely buried in NSM construction to reduce the embedded solid shear stress gradient strip,making the force more evenly.更多还原