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(中國(guó)建筑科學(xué)研究院建筑結(jié)構(gòu)研究所 北京 100013)
［提要］結(jié)合試驗(yàn)研究、工程設(shè)計(jì)與施工體會(huì)，對(duì)混凝土結(jié)構(gòu)后錨固連接錨栓的產(chǎn)品分類、性能標(biāo)準(zhǔn)、適用范圍、性能檢驗(yàn)、復(fù)雜荷載下的錨固性能檢驗(yàn)要求及方法、裂縫對(duì)錨栓承載力的影響、錨固失效、錨栓承載力分項(xiàng)系數(shù)γR的取值等問(wèn)題進(jìn)行了討論，對(duì)《混凝土結(jié)構(gòu)后錨固技術(shù)規(guī)程》(JGJ145—2004)中相關(guān)的部分條款提出了不同意見(jiàn)和修改建議。
［關(guān)鍵詞］ 后錨固連接 可靠性 錨栓 分類 適用性 錨固失效
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