化学锚栓在配筋混凝土中的抗拉性能研究  

Study on the tensile performance of chemical anchor bolts in reinforcement concrete

作　　者：杨艾淋 赵宁雨[1,2] 项顺 刘洋 高强 YANG Ailin;ZHAO Ningyu;XIANG Shun;LIU Yang;GAO Qiang(School of Civil Engineering,Chongnqing Jiaotong University,Chongqing 400074,China;State Key Laboratory of Mountain Bridge and Tunnel Engineering,Chongqing 400074,China;Tangmei Real Estate Development Co.,Ltd.,Chongqing 401331,China)

机构地区：[1]重庆交通大学土木工程学院,重庆400074 [2]山区桥梁及隧道工程国家重点实验室,重庆400074 [3]唐美房地产开发有限公司,重庆401331

出　　处：《建筑结构》2025年第6期61-68,25,共9页Building Structure

基　　金：国家自然科学基金(51608081);重庆交通大学研究生教育创新基金(2020S0019);重庆市自然科学基金(cstc2021jcyj⁃msxmX1011)。

摘　　要：为研究混凝土中配筋对化学锚栓抗拉承载力的影响,通过设置不同的混凝土配筋参数,对化学锚栓进行不同锚固深度下的拉拔试验。首先分析了化学锚栓在配筋混凝土中的破坏模式和粘结性能,然后研究了配筋间距和锚固深度对抗拉承载力的影响规律,最后针对锥体破坏模式和锥体-粘结复合破坏模式,提出了化学锚栓锚固于配筋混凝土时抗拉承载力的计算公式。研究结果表明:配筋在锥体破坏和粘结破坏模型下具有不同的作用机理;锥体-粘结复合破坏模式下,配筋能够提高化学锚栓的抗拉承载力,其对化学锚栓抗拉承载力的提高效果随配筋间距增大而减小,随锚固深度增大而增大;提出的计算模型能够准确地描述配筋间距、锚栓直径、混凝土强度、配筋截面面积等参数与化学锚栓抗拉承载力的关系。To investigate the influence of the reinforcement in substrate concrete on the tensile capacity of chemical anchors,pull⁃out tests were conducted at various embedment depths by setting different reinforcement parameters.Firstly,the failure modes and bonding performance of the chemical anchors embedded in reinforced concrete were analyzed.Then,the effects of reinforcement spacing and embedment depth on the tensile capacity were studied.Finally,calculation formulas for the tensile capacity of chemical anchors embedded in reinforced concrete were proposed for both cone failure mode and cone⁃bonding composite failure mode.The research results indicate that reinforcement exhibits different effects under cone failure and bonding failure models.In the cone⁃bonding composite failure mode,reinforcement can enhance the tensile capacity of chemical anchors,with the effect decreasing as reinforcement spacing increases and increasing as embedment depth increases.The proposed tensile capacity model can accurately describe the relationship between the parameters such as reinforcement spacing,anchor diameter,concrete strength,and reinforcement cross⁃sectional area,between the tensile capacity of chemical anchors.

关 键 词：化学锚栓 锚体配筋 拉拔试验 破坏模式 抗拉承载力 

分 类 号：TU375[建筑科学—结构工程]