Installation method for preventing lower chord member at end of large-span truss from bending deformation: Fid-Bau Portal

Installation method for preventing lower chord member at end of large-span truss from bending deformation

GUO BAOSHENG / LI HUIBIN / REN LEI

The invention discloses a mounting method for preventing a lower chord member at the end of a large-span truss from bending deformation, which comprises the following steps of: 1, splicing and assembling the large-span truss on the ground, and arranging bidirectional diagonal web members in support grids on two sides of the truss; 2, a truss is arranged on the top of a jack, and the jack jacks up the truss; 3, steel corbels are arranged on the columns in a matched mode in the installation process; 4, a crane rope is fixed to profile steel on the two sides of a lower chord of the truss, and the truss is hoisted through the crane; 5, the crane hoists the truss to the top of the steel corbel, and the support grids on the two sides of the truss are connected with the steel corbel; 6, fixing between the crane rope and the truss is unfastened, the steel bracket is dismantled, and installation of the large-span truss is completed. According to the installation method for preventing the lower chord member at the end of the large-span truss from being bent and deformed, in the installation process of a crane, the rope pulling force can be released in advance, and the purposes of energy conservation and emission reduction are achieved.

本发明公开了一种防止大跨度桁架端部下弦杆受弯变形的安装方法，包括以下步骤：步骤1、在地面拼接组装大跨度桁架，在桁架两侧支座区格设置双向斜腹杆；步骤2、将桁架置于千斤顶顶部，千斤顶将桁架顶起；步骤3、安装过程中配合在柱子上设置钢制牛腿；步骤4、将起重机绳索固定在桁架下弦两侧型钢，通过起重机对桁架进行吊装；步骤5、起重机将桁架吊装至钢制牛腿顶部，桁架两侧支座区格与钢制牛腿连接；步骤6、解开重机绳索与桁架之间的固定，拆除钢制牛腿，完成大跨度桁架的安装，本发明一种防止大跨度桁架端部下弦杆受弯变形的安装方法，起重机在安装过程中可以提前释放绳索拉力，起到节能减排的目的。

Zugriff

Download

Seitennavigation

Dokumentinformationen

Ähnliche Titel

Exportieren, teilen und zitieren