中小跨径钢混组合板梁桥合理主梁布置研究

Research on the reasonable beam arrangement of steel-concrete composite plate beam for medium and small span bridges

基于高速公路常用中小跨径桥梁,对钢混组合板梁的主梁片数与主梁间距进行敏感性分析,研究主梁间距变化对混凝土桥面板、钢主梁的受力和用钢量的影响,得到既满足受力要求又经济美观的主梁片数与间距,为中等跨径钢混组合梁断面形式的拟定提供依据。

In view of the widly used in expressway,the sensitivity of medium and small span bridge was analyzed on the beam number and the beam spacing of steel composite plate beam,the influence of the change of the beam spacing on mechanics and steel quantity of the concrete bridge deck and the steel beam was figured out.A reasonable value of the beam number and the beam spacing will be obtained which not only meet the requirements of structure mechanics but also economic and beautiful.This will provide the basis for the development of the cross section of the steel composite plate beam in small and medium span bridges.