内设钢筋的倾斜钢管混凝土柱施工技术  

Construction Technology of Inclined Concrete-filled Steel Tube Column with Internal Reinforcement

作　　者：田伟 杨伟波 夏雷 程娄锋 TIAN Wei;YANG Weibo;XIA Lei;CHENG Loufeng(China State Construction Overseas Development Co.,Ltd.,Shanghai 200125,China)

机构地区：[1]上海中建海外发展有限公司,上海200125

出　　处：《施工技术（中英文）》2024年第18期83-86,97,共5页Construction Technology

基　　金：中建八局2023年度科技研发项目(2023-2-15)。

摘　　要：由于钢管柱内混凝土配置钢筋可提升钢管和混凝土的协同工作性能,北非一些国家的设计规范要求钢管柱内混凝土按构造配筋率设置钢筋。针对倾斜钢管柱内安装钢筋的难点,确定了预制钢筋笼并与钢管固定、整体吊装的思路。先从设计入手,明确了钢筋笼与栓钉间距,并提出钢筋笼间非接触搭接的连接方式。在安装过程中,探索利用钢筋滑槽克服钢管柱内栓钉影响、采用可分次焊接双十字定位筋固定钢筋笼、钢筋笼与钢管柱整体吊装等方法进行钢管柱内钢筋安装,最后利用混凝土顶升技术完成钢管柱内混凝土浇筑。通过工程实践验证了技术措施的实用性和有效性,取得良好综合效益。Setting steel rebar in steel tube columns can improve the synergistic performance of steel tube and concrete,the design codes of some countries in North Africa require that the concrete in the concrete-filled steel tube column is reinforced according to the concrete reinforcement ratio.In view of the challenge of installing rebar in inclined steel tube column,the idea of prefabricated rebar cage,rebar cage fixed with steel tube and integral hoisting is determined.Starting from design,the distance between the steel cage and shear stud is defined,and the non-contact splice connection between the rebar cage is proposed.In the process of installation,exploring the use of rebar chute to overcome the adverse effect of shear studs inside the steel tube,separable welding double cross positioning rebar is adopted to fix the rebar cage,and integral hoisting method is applied to install the rebar inside the steel tube column.Finally,concrete jacking technology is used to cast the concrete in the steel tube column.The practicability and effectiveness of the technology is verified through practice,and comprehensive benefits are obtained.

关 键 词：非接触搭接 钢筋滑槽 钢筋笼 吊装 双十字定位筋 施工技术 

分 类 号：TU755[建筑科学—建筑技术科学]