物流仓库框架结构预应力钢筋混凝土加固技术  

Reinforcement Technology of Prestressed Reinforced Concrete for Logistics Warehouse Frame Structure

作　　者：刘龙[1] LIU Long(China Railway 18th Bureau Group Third Engineering Co.,Ltd.,Zhuozhou,Hebei 072750,China)

机构地区：[1]中铁十八局集团第三工程有限公司,河北涿州072750

出　　处：《施工技术(中英文)》2025年第7期64-70,共7页Construction Technology

基　　金：中国铁建股份有限公司2022年度科技研究开发计划(2022-C1);中铁十八局集团有限公司2022年度科研创新项目(C2022-051)。

摘　　要：为了分析物流仓库常用的混凝土框架结构中预应力钢筋加固技术的加固效果,针对预先带有缺陷的钢筋混凝土框架结构进行了加载试验,试验过程中对比了外部预应力钢筋加固以及近表面嵌入法(NSM)两种加固方法对框架结构节点极限荷载的加固效果。试验考虑了3种常见缺陷,分别设置在框架结构内侧、外侧以及立柱处。研究表明,3组带有缺陷的试样极限荷载相比未设置缺陷的构件分别降低了58%,22%和54%。对于缺陷1,外部预应力钢筋加固与NSM钢筋加固后的极限荷载分别提升了9.2kN和39.1kN。对于缺陷2,两种措施加固后的极限荷载分别提升了17.7kN和14.6kN。对于缺陷3,两种措施加固后的极限荷载分别提升了21.4kN以及26.2kN。This paper aims to analyze the reinforcement effect of prestressed steel reinforcement technology in concrete frame structures commonly used in logistics warehouses.A loading test was carried out on a reinforced concrete frame structure with defects.During the test,the reinforcement effects of two reinforcement methods,external prestressed steel reinforcement and near-surface embedding method(NSM),on the ultimate load of the frame structure node were compared.The test considered three common defects,which were set on the inside,outside and column of the frame structure.The study showed that the ultimate loads of the three groups of defective specimens were reduced by 58%,22%and 54%respectively compared with the components without defects.For defect 1,the ultimate loads after external prestressed steel reinforcement and NSM steel reinforcement increased by 9.2kN and 39.1kN respectively.For defect 2,the ultimate loads after the two measures were strengthened increased by 17.7kN and 14.6kN respectively.For defect 3,the ultimate loads after the two measures were strengthened increased by 21.4kN and 26.2kN respectively.

关 键 词：框架结构 加固 预应力 近表面嵌入法 极限荷载 

分 类 号：TU746.31[建筑科学—建筑技术科学]