斜拉式免支撑顶板后浇带施工技术  

CONSTRUCTION TECHNOLOGY OF POST-CASTING BELT OF INCLINED-PULL TYPE SUPPORT-FREE ROOF

作　　者：沈杰 奚邦凤 付勤友 武建辉 杨宏正 SHEN Jie;XI Bang-feng;FU Qin-you;WU Jian-hui;YANG Hong-zheng(Wuhan Construction Engineering Group Co.,Ltd.,430056,Wuhan,China)

机构地区：[1]武汉建工集团股份有限公司,武汉430056

出　　处：《建筑技术》2023年第10期1239-1241,共3页Architecture Technology

基　　金：湖北省建设科技计划项目(No.43)。

摘　　要：针对传统顶板后浇带施工工艺特点,提出一种斜拉式免支撑顶板后浇带施工技术。预埋拉钩和拉结钢筋组成斜拉体系,约束后浇带悬挑结构因自重荷载导致的变形;在后浇带两侧悬挑结构中嵌入桁架板,作为后浇带混凝土浇筑底模;利用数值模拟验证方法的可靠性并将其应用于实际工程中。结果表明,该方法能在保证施工质量的前提下免除支撑脚手架体的搭设,提高架体材料周转率;节省施工空间,为后浇带附近其他工序的交叉施工提供便利。Aiming at the characteristics of traditional roof post-casting belt construction technology,a construction technology of inclined-pull type support-free roof post-casting belt is proposed.Pre-embedded hooks and tie bars form a cable-stayed system to constrain the deformation of post-cast cantilever structure due to self-weight load.The truss slabs are embedded in the cantilever structure on both sides of the post-casting belt as the bottom form for the concrete pouring of the post-casting belt.Verify the reliability of the method by means of numerical simulation and apply it to practical engineering.This method can avoid the erection of supporting scaffolding under the premise of ensuring the construction quality,improve the material turnover rate of the scaffolding,save the construction space,and provide convenience for the cross-construction of other processes near the post-casting belt.

关 键 词：后浇带施工 免支撑 斜拉体系 桁架板底模 

分 类 号：TU745.9[建筑科学—建筑技术科学]