装配式钢筋混凝土结构中大直径钢筋锚固长度应用研究  

Application Research on Anchorage Length of Large-diameter Steel Bars in Prefabricated Reinforced Concrete Structures

作　　者：郭敬 陈文强 丛峻 郑山锁[2] 张磊 GUO Jing;CHEN Wenqiang;CONG Jun;ZHENG Shansuo;ZHANG Lei(China Construction Industrial Engineering and Technology Research Academy Co.,Ltd.,Beijing 101300,China;Xi’an University of Architecture and Technology,Xi’an,Shaanxi 710055,China)

机构地区：[1]中建工程产业技术研究院有限公司,北京101300 [2]西安建筑科技大学,陕西西安710055

出　　处：《施工技术（中英文）》2022年第4期17-20,共4页Construction Technology

基　　金：中建股份科技研发课题:基于大直径钢筋装配式混凝土框架结构关键技术研究(CSCEC-2020-Z-18)。

摘　　要：装配式钢筋混凝土结构中应用大直径钢筋方便节点就位安装,可解决钢筋细密问题。为研究装配式钢筋混凝土结构中大直径钢筋锚固长度,对比国内外混凝土规范和文献关于锚固长度的规定,分析大直径钢筋锚固长度降低的合理性,指出我国规范给出的锚固长度较长,限制了大直径钢筋的应用。钢筋直径变大时,黏结性能的关键影响因素相对肋面积基本不变,锚固长度是否放大需进行进一步研究。为推进大直径钢筋在装配式钢筋混凝土结构中的应用,大直径钢筋锚固长度和大直径钢筋梁柱构件配筋方法研究需配套开展。In the prefabricated reinforced concrete structure,large-diameter steel bars are used to facilitate the installation of nodes in place,which can solve the problem of slender and dense steel bars.In order to study the anchorage length,the paper compares the domestic and foreign concrete specifications and literature on the anchorage length,analyzes the rationality of reducing the anchorage length of large-diameter steel bars,and points out that the anchorage length given by Chinese specification is longer,which limits the application of large-diameter steel bars.When the diameter of the steel bar increases,the key factors affecting the bonding performance are basically unchanged relative to the rib area.Whether the anchorage length is enlarged needs to be further studied.In order to promote the application of large-diameter steel bars in prefabricated reinforced concrete structures,the research on the anchorage length of large-diameter steel bars and the reinforcement method of large-diameter steel bars in beam-column members needs to be carried out.

关 键 词：装配式 混凝土 大直径钢筋 锚固长度 影响因素 

分 类 号：TU767[建筑科学—建筑技术科学]