Post-cast strip I-steel support changing and jacking construction method: Fid-Bau Portal

Post-cast strip I-steel support changing and jacking construction method

LU BINXIN / FAN ZHIGANG / CHEN XIAODONG / LI JIANHUI

The invention relates to a post-cast strip I-shaped steel support changing and jacking construction method. The method comprises the steps that firstly, surveying and setting out are conducted; 2, post-cast strip back-jacking I-shaped steel and a positioning steel plate are machined; 3, preparation before construction; fourthly, the beam bottom die part is dismantled; 5, cleaning the surface of the concrete; sixthly, the upper positioning steel plate is fixed; seventhly, the electric hoist hoists the I-shaped steel to the positioning position; eighthly, the I-shaped steel and the upper positioning steel plate are welded and fixed; ninthly, the lower positioning steel plate is fixed; tenthly, the I-shaped steel and the lower positioning steel plate are welded and fixed; and eleventhly, the post-cast strip formwork support is dismantled. According to the external wall post-cast strip plugging construction method, a traditional external wall post-cast strip plugging construction process is optimized, the construction time is shortened, construction materials and manpower resource investment are saved, the actual action effect is better than that of the traditional external wall post-cast strip plugging construction process, and important guarantee is provided for the accuracy of subsequent tests.

本发明涉及一种后浇带工字钢换撑回顶施工方法，步骤一：测量放线；步骤二：后浇带回顶工字钢及定位钢板加工；步骤三：施工前准备；步骤四：梁底模部分拆除；步骤五：混凝土表面清理；步骤六：上定位钢板固定；步骤七：电动葫芦吊装工字钢至定位位置；步骤八：工字钢与上定位钢板间焊接固定；步骤九：下定位钢板固定；步骤十：工字钢与下定位钢板间焊接固定；步骤十一：后浇带支模架拆除。本发明优化了传统外墙后浇带封堵的施工工艺，精简了施工时长、节省了施工材料和人力的资源投入，且实际作用效果与传统外墙后浇带封堵的施工工艺相比也更胜一筹，也为后续做的试验的精确性提供的重要的保障。

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