(中国建筑科学研究院建筑结构研究所 北京 100013)
［提要］结合试验研究、工程设计与施工体会，对混凝土结构后锚固连接锚栓的产品分类、性能标准、适用范围、性能检验、复杂荷载下的锚固性能检验要求及方法、裂缝对锚栓承载力的影响、锚固失效、锚栓承载力分项系数γR的取值等问题进行了讨论，对《混凝土结构后锚固技术规程》(JGJ145—2004)中相关的部分条款提出了不同意见和修改建议。
［关键词］ 后锚固连接 可靠性 锚栓 分类 适用性 锚固失效
Research on Some Problems About Technology of Postinstalled Fastenings in Concrete Structures/Pan Li(Institute of Building Structures,China Academy of Building Research,Beijing 100013,China)
Abstract:Based on the experimental analysis and the experiences in design and construction in practice,some professional problems to anchors,which are used in postinstalled fastenings on concrete structures,are discussed. The problems include product classification,capability criterions,applicability,performance test,method and request of test on the fastening ability under complex loads,influence of crack on the strength of anchor,fastening invalidation,valuing of the material coefficient of anchor,etc.Based on the analysis,some different ideas and suggestions are proposed to the relative parts of Technical Specification for Postinstalled Fastenings in Concrete Structures(JGJ145—2004).
Keywords:connection by postinstalled fastenings; reliability; anchor; classification; applicability; fastening invalidation