大跨度钢结构屋盖累积滑移方案设计与分析

苏州站改造工程站房屋盖为大跨度菱形管桁架结构,最大跨度为132 m,采用国内先进的累积液压顶推滑移法安装,有效地解决了场地狭小、施工周期短、构件自重大、安装精度高等不利因素。介绍了滑移原理及特点、滑移施工工艺流程、滑移轨道设置、滑移过程屋架受力分析、临时支架系统设计、屋盖卸载分析等内容。北站房通过75 d滑移施工,完成钢结构安装5 000 t,实现预期工期目标,取得良好的经济效益和社会效益,对同类工程具有指导价值。

Design and Analysis of the Cumulative Slip in Large-span Steel Structure Roof

The roof of Suzhou Station Renovated Station has a large-span diamond-shaped tubular truss structure,with the longest span of 132 m.The adoption of the advanced cumulative hydraulic pressure incremental launching slip method to install effectively solved adverse factors,such as a narrow venue,a short work cycle,heavy dead weights of the components,high-accuracy installation.This paper introduces the principle and characteristics of slip,sliding construction process,setting of slip track,roof force analysis ...