Construction method for positioning and installing curved steel tower: Fid-Bau Portal

Construction method for positioning and installing curved steel tower

WANG MINGHUI / LIU JUNCHI / YOU GUANWU / WEI MINGSONG

The invention discloses a construction method for positioning and installing a curved steel tower. The construction method comprises the following steps that all sections of the steel tower are pre-assembled and matched; hoisting is carried out through a floating crane, coarse positioning superposition is carried out through an inter-segment positioning mechanism, and temporary locking is carriedout through bolts; an installation information model is constructed by scanning node data of installation sections, the real-time installation information model of the steel tower is compared with a design information model to obtain an installation deviation value, and the positions between the sections are adjusted according to the installation deviation value so as to achieve accurate positioning; and after the steel tower is completely positioned, welding is conducted on a segment connector, and segment installing and fixing are completed. Through coarse positioning and fixing during hoisting and scanning of a component information model, the installation information model is compared with the design information model to obtain the installation deviation value, the segment position isaccurately adjusted, finally, the accurately-positioned segment connector is welded and fixed, positioning and installation of the curved steel tower are achieved, and the construction accuracy and reliability can be ensured.

本发明公开了一种曲形钢塔定位安装的施工方法，包括如下步骤：将钢塔各节段进行预装匹配；通过浮吊进行吊装，通过节段间定位机构进行粗定位叠加，并通过螺栓进行临时锁定；通过扫描安装节段的节点数据，构建安装信息模型，将实时的钢塔安装信息模型与设计信息模型进行对比得到安装偏差值，根据安装偏差值对节段间位置进行调整，实现精确定位；钢塔完全定位后，对节段接口进行焊接施焊，完成节段安装固定。通过吊装时的粗定位固定，然后通过扫描构件信息模型，从而将安装信息模型与设计信息模型进行对比得到安装偏差值，从而精确调整节段位置，最后将精确定位的节段连接口进行焊接固定，实现曲形钢塔的定位安装，确保施工精确性和可靠性。

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