Steel sleeve reinforced multi-confined concrete column connecting structure and construction method: Fid-Bau Portal

Steel sleeve reinforced multi-confined concrete column connecting structure and construction method

CAI ZHILI / CHEN ZHAORONG / LI BO / HU MOU / MA CHUXIAN

The steel sleeve reinforced multi-confined concrete column connecting structure comprises a reinforced steel cylinder arranged on the outer side of a to-be-reinforced concrete column in a sleeving mode, and the reinforced steel cylinder comprises a top reinforced steel cylinder body, a bottom reinforced steel cylinder body and multiple sections of middle reinforced steel cylinder bodies arranged between the top reinforced steel cylinder body and the bottom reinforced steel cylinder body; the height of the top reinforcing steel cylinder body, the middle reinforcing steel cylinder bodies and the bottom reinforcing steel cylinder body after being connected is matched with the height of a concrete column to be reinforced, and the top reinforcing steel cylinder body, the middle reinforcing steel cylinder bodies and the bottom reinforcing steel cylinder body are the same in structure and each formed by splicing two semicircular steel pipes. The top reinforcing steel cylinder body and the middle reinforcing steel cylinder bodies, the adjacent middle reinforcing steel cylinder bodies and the middle reinforcing steel cylinder body and the bottom reinforcing steel cylinder body are connected through arc-shaped buckles and H-shaped steel, and concrete is poured in gaps between the top reinforcing steel cylinder body, the middle reinforcing steel cylinder bodies and the bottom reinforcing steel cylinder body and a to-be-reinforced concrete column. An original concrete column and newly-poured concrete can be better restrained and jointly stressed, the bearing capacity and the deformation capacity of the reinforcing column can be greatly improved, and the better reinforcing effect is achieved.

一种钢套筒加固多重约束混凝土柱连接结构及施工方法，包括套装在待加固混凝土柱外侧的加固钢筒体，所述加固钢筒体包括顶部加固钢筒体、底部加固钢筒体以及设置在顶部加固钢筒体和底部加固钢筒体之间的多段中部加固钢筒体，顶部加固钢筒体、多段中部加固钢筒体和底部加固钢筒体连接后的高度与待加固混凝土柱的高度相匹配，所述顶部加固钢筒体、中部加固钢筒体和底部加固钢筒体的结构相同均由由两块半圆钢管拼装而成，顶部加固钢筒体与中部加固钢筒体、相邻中部加固钢筒体以及中部加固钢筒体底部加固钢筒体之间均通过弧形卡扣和H型钢连接，所述顶部加固钢筒体、中部加固钢筒体和底部加固钢筒体与待加固混凝土柱之间的间隙内浇筑有混凝土。本发明能够更好地约束原混凝土柱及新浇筑混凝土，使其共同受力，可较大地提高加固柱的承载能力和变形能力，具有更好地加固效果。

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