Cantilever steel structure construction temporary support dismantling method: Fid-Bau Portal

Cantilever steel structure construction temporary support dismantling method

PAN XULIANG / SONG YANFEI

The invention relates to the technical field of temporary support dismantling, in particular to a cantilever steel structure construction temporary support dismantling method, a temporary support is designed to be a multi-section combined temporary support, and dismantling steps are as follows: a jack at the top of a cantilever structure temporary support slowly descends; connecting bolts between the bottom section of the temporary support and the upper section of the temporary support are removed, a stable hoisting point is selected, the upper temporary support is hoisted through a truck crane, the bottom section of the temporary support is placed on a mould, pulleys are arranged on the lower side of the mould, and the bottom section of the temporary support slides out of the cantilever structure; s2, the step S2 is repeated until only the topmost temporary support and the jack on the top remain, the topmost temporary support and the jack on the top are placed on the mould and slide out of the cantilever structure, and all the temporary supports are dismantled; according to the method, dismantling is easy, the upper cantilever steel structure cannot be collided, dismantling is more labor-saving, and operability and safety of dismantling of the temporary support are improved.

本发明涉及临时支撑拆除技术领域，特别是涉及一种悬挑钢结构施工临时支撑拆除方法，临时支撑设计为多节组合式临时支撑，拆除步骤如下：将悬挑结构临时支撑顶部的千斤顶缓慢下降；将临时支撑底部一节与其上一节之间的连接螺栓拆除，选用稳定吊装点，使用汽车吊将上部临时支撑起吊，将底部一节临时支撑放置在胎具，胎具下侧设置滑轮，滑出悬挑结构即可；重复步骤S2，直至仅剩最上节临时支撑和顶部的千斤顶，将最上节临时支撑和顶部的千斤顶放置在胎具，滑出悬挑结构，所有临时支撑拆除完毕；本方法拆除简单，不会碰撞到上部悬挑钢结构，拆除更省力，提升了临时支撑拆除的可操作性和安全性。

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