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某工程主体结构为空间钢架体系,圆管钢架在空间错综交汇,形成由不同斜面在空间不规则交错而成的屋面。保证多管对接安装的精度、控制主管的挠度、有效控制胎架的沉降是该结构施工中遇到的难点问题。为解决以上问题,结合现场实际情况,采取胎架支撑体系为主,脚手架胎架为辅的支撑体系;其中型钢胎架承受结构杆件重量,脚手架胎架搭设在型钢胎架四周以供高空管管对接操作,同时起到稳固型钢胎架的作用;利用数字化技术模拟施工现场的实际安装和落架的施工流程,对异型结构的安装先进行预起拱,并确定多管的安装和落架顺序,保证了该空间多管交汇异型网格结构的安装精度。
The main structure of a project is a space steel frame system. The steel pipe frames in the space are intertwined in space, forming a roof which is irregularly staggered in space by different bevels. To ensure the accuracy of multi-tube docking installation, control director of the deflection, the effective control of the tire rack settlement is the construction of the difficulties encountered in the construction. In order to solve the above problems, combined with the actual situation on the scene, take the main support system of the tire frame, scaffold tire support system supplemented by the child; wherein the steel tire frame to bear the weight of the structure rod, scaffold shelves erected around the steel tire frame for high altitude Pipe docking operation, at the same time play a solid steel tire frame role; the use of digital technology to simulate the actual installation of the construction site and the fall of the construction process, the special structure of the pre-arched installation, and to determine the installation of multi-tube and landing sequence , To ensure that the space for multi-tube cross-shaped mesh structure installation accuracy.