Cold-formed thin-walled H-shaped steel-polypropylene tie bar PEC column: Fid-Bau Portal

Cold-formed thin-walled H-shaped steel-polypropylene tie bar PEC column

YU JINGUANG / LIANG JIANYONG / ZHANG PEIZHOU

The invention discloses a cold-formed thin-walled H-shaped steel-polypropylene tie bar PEC column. The cold-formed thin-walled H-shaped steel-polypropylene tie bar PEC column comprises first cold-formed thin-walled C-shaped steel, second cold-formed thin-walled C-shaped steel, a connecting piece and a polypropylene packing belt, wherein the first cold-formed thin-walled C-shaped steel and the second cold-formed thin-walled C-shaped steel are distributed in a back-to-back mode, a web plate of the first cold-formed thin-walled C-shaped steel and a web plate of the second cold-formed thin-walled C-shaped steel are connected through a plurality of connecting pieces, and each polypropylene packing belt is of an annular structure. Each polypropylene packing belt penetrates through the upper flange and the lower flange of the first cold-formed thin-walled C-shaped steel and the upper flange and the lower flange of the second cold-formed thin-walled C-shaped steel, and light high-strength concrete is poured between the upper flange and the lower flange of the first cold-formed thin-walled C-shaped steel and between the upper flange and the lower flange of the second cold-formed thin-walled C-shaped steel. Cracks are not easy to occur, the process is simple, and the construction period is short.

本发明公开了一种冷弯薄壁H形钢‑聚丙烯系杆PEC柱，包括第一冷弯薄壁C形钢、第二冷弯薄壁C形钢、连接件及聚丙烯打包带；其中，第一冷弯薄壁C形钢与第二冷弯薄壁C形钢采用背靠背的方式分布，且第一冷弯薄壁C形钢的腹板与第二冷弯薄壁C形钢的腹板之间通过若干连接件相连接，各聚丙烯打包带均为环状结构，且各聚丙烯打包带均穿过第一冷弯薄壁C形钢的上翼缘及下翼缘和第二冷弯薄壁C形钢的上翼缘及下翼缘，第一冷弯薄壁C形钢的上翼缘与下翼缘之间和第二冷弯薄壁C形钢的上翼缘与下翼缘之间均浇筑有轻质高强混凝土，该柱具有自重小，不易出现裂缝、工艺简单以及施工周期短的特点。

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