Large-span complex combined steel roof rotating, accumulating and sliding construction method: Fid-Bau Portal

Large-span complex combined steel roof rotating, accumulating and sliding construction method

XU QINGHU / ZHANG YU / WEI JIANHAO / CHEN GULEI / ZOU KONGQING

The invention belongs to the technical field of complex combined steel structure construction, and particularly relates to a large-span complex combined steel roof rotation accumulative slippage construction method which comprises the following steps of drawing up structure rotation accumulative slippage and locally and integrally hoisting all parts; dividing a rotating and sliding unit part according to a proposed main body structure construction method; determining the spatial layout of a sliding track according to the prepared rotary sliding part, and determining the area range of the assembly jig frame; the position of the supporting frame is determined according to the planned space layout, the inner sliding rail and the outer sliding rail are installed on the supporting frame, it is ensured that the centers of all the rails are consistent, and the crawl devices on the rails synchronously conduct concentric arc accumulation sliding in the sliding process. According to the construction method, the large-span space combined steel roof system is constructed by combining ground local structure assembling and hoisting with a high-altitude fixed-point assembling, rotating, accumulating and sliding construction technology, the construction period is shortened, and the safety of the construction process is improved.

本发明属于复杂组合钢结构施工技术领域，尤其是一种大跨度复杂组合钢屋盖旋转累积滑移施工方法，现提出以下方案，包括以下步骤：拟定结构旋转累积滑移与局部整体吊装各部分；根据拟定的主体结构施工方法划分旋转滑移单元部分；根据拟定的旋转滑移部分确定滑移轨道的空间布局，并确定拼装胎架区域范围；依据拟定的空间布局确定支撑架的位置，并于支撑架上安装内滑移轨道和外滑移轨道，确保各轨道中心一致，滑移过程中轨道上的爬行器同步进行同心圆弧累积滑移。本发明应用地面局部结构拼装吊装结合高空定点拼装旋转累积滑移施工技术建设此类大跨度空间组合钢屋盖体系不仅缩短工期，而且提高施工过程的安全性。

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