Concrete floor lifting steel column structure and construction method: Fid-Bau Portal

Concrete floor lifting steel column structure and construction method

YU CHANGLIANG / LEE KA CHUN / ZHANG LIUNA / ZHANG QIONG

The invention belongs to the technical field of industrial civil buildings, and particularly relates to a concrete floor steel column lifting structure and a construction method. The main steel beam is located below the bottom face of the floor slab, a gap is formed between the main steel beam and the bottom face of the floor slab, and the two ends of the main steel beam are fixed to original beams. A hole is formed in the floor, and the steel column penetrates through the hole and is arranged on the main steel beam. Compared with the prior art, according to the concrete floor lifting steel column structure and the construction method, the newly-added steel columns are directly connected with the newly-added steel beams, the steel columns directly transmit vertical force to the steel beams, and force transmission through a floor is not needed; secondly, a gap is reserved between the main steel beam and the original floor slab, floor slab deformation is released, the slab face is prevented from being pulled, and the slab face of the original floor slab does not need to be reinforced; therefore, the original floor building surface layer is not damaged, the original floor building surface layer does not need to be recovered, and the construction cost is reduced.

本发明属于工业民用建筑技术领域，具体涉及一种混凝土楼板起钢柱结构及施工方法，包括主钢梁及钢柱；所述主钢梁位于楼板底面下方，所述主钢梁与楼板底面之间设有间隙，所述主钢梁的两端固定于原有梁之上；楼板上设有洞口，所述钢柱穿过所述洞口设置于所述主钢梁上。与现有技术相比较，本发明提出的一种混凝土楼板起钢柱结构及施工方法，通过新增钢柱与新增钢梁直接连接，钢柱将竖向力直接传到给钢梁，无需通过楼板传力；其次通过在主钢梁与原有楼板之间预留空隙，释放了楼板变形，避免板面受拉，无需对原有楼板板面进行加固；因此不破坏原有楼板建筑面层，从而不需要恢复原有楼板建筑面层，降低了工程造价。

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