Inverted T-shaped steel beam-concrete composite beam structure of medium and small-span bridge and construction method: Fid-Bau Portal

Inverted T-shaped steel beam-concrete composite beam structure of medium and small-span bridge and construction method

ZHANG QIANG / MA XIAOGANG / LI JING / KONG LINGXI / WANG TIANXIANG / ZHANG WEIGE

The invention relates to an inverted T-shaped steel beam-concrete composite beam structure of a medium and small-span bridge and a construction method. The inverted T-shaped steel beam-concrete composite beam structure is composed of a plurality of single inverted T-shaped steel beam-concrete composite beams which are arranged in parallel side by side. The single inverted T-shaped steel beam-concrete composite beam is prefabricated in a factory, and comprises an inverted T-shaped steel beam (1) and a reinforced concrete slab (2) arranged on the inverted T-shaped steel beam (1), every two adjacent inverted T-shaped steel beam-concrete composite beams are connected through a cast-in-place reinforced concrete slab(3), end cross beam prefabricated sections (5) are arranged at the ends of the inverted T-shaped steel beam-concrete composite beams, and every two adjacent end cross beam prefabricated sections (5) are connected through a cast-in-place end cross beam cast-in-place section (4). Compared with the prior art, the structure is simple, the steel beam is easy to manufacture, and machining is convenient; the mechanical property is good, construction is convenient, the construction speed is high, and cost is low.

本发明涉及一种中小跨径桥梁的倒T钢梁‑混凝土组合梁结构及施工方法，倒T钢梁‑混凝土组合梁结构由多个并列平行设置的单片倒T钢梁‑混凝土组合梁组成，所述单片倒T钢梁‑混凝土组合梁在工厂预制得到，包括倒T钢梁(1)和设于倒T钢梁(1)上的钢筋混凝土板(2)，相邻单片或多片倒T钢梁‑混凝土组合梁之间通过现场浇筑的钢筋混凝土板(3)连接，所述单片或多片倒T钢梁‑混凝土组合梁的端部设有端横梁预制段(5)，相邻端横梁预制段(5)之间通过现场浇筑的端横梁现浇段(4)连接。与现有技术相比，本发明结构构造简单，钢梁制作简单、加工方便；力学性能良好，施工方便，施工速度快，造价经济。

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