【作者】 崔硕； 刘红波； 陈志华； 李延春； 庞云涛；

【Author】 Cui Shuo;Liu Hongbo;Chen Zhihua;Li Yanchun;Pang Yuntao;School of Civil Engineering, Tianjin University;School of Civil Engineering,Hebei University of Engineering;Tianjin Xibei Zhonghe Prestressed Engineering Co., Ltd;

【机构】 天津大学建筑工程学院； 河北工程大学土木工程学院； 天津熙贝众合预应力工程有限公司；

【摘要】 江东国际能源中心屋盖位于78m高空中,是跨度40m的双曲双向预应力穹顶结构。本文对该结构的滑移拼接及张拉施工开展数值模拟,为国内首个高空预应力穹顶的施工提供参考。施工步骤分别为:东西方向十个片区滑移及南北向拉索一级张拉,屋盖分片拼装,拆除滑靴并更换南北边界支座,反顶支撑调整上部钢梁标高,拆除临时拉索并嵌补两侧杆件,最后进行东西方向拉索张拉以及南北方向拉索的二次张拉。研究与实践表明该施工方法能够在保证钢梁位移及索力满足要求的前提下尽量降低施工难度,减少张拉工作量,是一种行之有效的施工方法。更多还原

【Abstract】 The roof of Jiangdong International Energy Center is located in 78 m high altitude. It is a hyperbolic two-way prestressed dome structure with a span of 40 m. In this study, the numerical simulation of the sliding and tension construction of this structure was carried out. Meanwhile, the structural displacement and internal force in the whole process were analyzed, which provided reference for the construction of the first high-altitude prestressed dome in China. The construction scheme is determined as follows: ten pieces of slip and the first-level tension of the north-south direction cables were conducted, the north-south supports were installed and the upper steel beam was adjusted through the back-top lifting support, the temporary cables were removed and the remained members were embedded, the east-west direction cables were tensioned and the secondary tension of the north-south direction cables were carried out. Research and practice show that this construction method is an effective method.更多还原