论文部分内容阅读
张弦网架为一种自受力平衡结构。黄河口物理模型试验厅海域B厅采用焊接球节点张弦网架结构,由径向主桁架和环向次桁架组成。笔者对大跨度焊接球张弦桁架段单元的制作工艺、主桁架高空对接措施和索体安装工艺进行了合理分析对比。其中,预应力张拉索安装分别采用了索体抬吊工艺、锚索穿越工艺以及垂直提升逐点就位工艺,指出工艺的选择要根据现场不同的工况环境确定。
Strings truss is a self-balancing structure. Hall B of the Yellow River Estuary Physical Model Test Hall adopts the string-string grid structure of welded ball joints, which is composed of a radial main truss and a circumferential secondary truss. The author makes a reasonable analysis and comparison of the manufacturing process of the long-span welding string truss truss segment unit, the main truss overhead docking measures and the cable body installation process. Among them, the installation of prestressed cable tension were used to lift the cable body, the cable through the process and vertical lifting point by point process, pointed out that the process of choice according to the scene to determine the conditions of different environments.