拱桥钢混结合段受力性能研究

Study on mechanical behavior of steel-concrete section of arch bridge

以广东某拱桥设计为背景,通过对拱脚拱肋、PBL钢板、桥台以及混凝土桩有限元模拟,分析了拱桥梁端钢混结合段区域的受力性能。结果表明:拱脚拱肋顶板的应力变化复杂,桥台顶部和底部与PBL埋入钢板位置存在拉应力,但整体上应力满足要求,结构具备较高的安全储备。

Based on the design of an arch bridge in Guangdong province,the mechanical behavior of the steel-concrete joint section at the end of the arch bridge was analyzed by finite element simulation of arch foot arch rib,PBL steel plate,abutment and concrete pile.The results show that the stress variation of the roof of the arch foot girder is complex,and there is tensile stress at the top and bottom of the abutment and the position of PBL embedded steel plate,but the overall stress meets the requirements,and the structure has a high safety reserve.