波形钢腹板组合箱梁横向受力有效分布宽度研究

为了研究波形钢腹板箱梁的桥面板有效分布宽度,制作了一片模型试验梁,对其进行了静载非破坏性试验,研究了此种结构桥面板的有效分布宽度变化规律.结合现行公路桥规值和有限元结果,在3种有效分布宽度计算值比较的基础上对现行公路桥规值进行修正,得到了不同工况下的有效分布宽度修正系数.结果表明:按现行公路桥规计算的有效分布宽度值相比试验值、有限元结果略小,应对桥规值乘以大于1.0的修正系数,使之适用于波形钢腹板箱梁的有效分布宽度计算.

Research on the Lateral Effective Width of Composite Box-girders with Corrugated Steel Webs

One model test beam is made to study effective distribution width of the deck of girder with corrugated webs. Then static non-destructive testing is conducted to study distribution of transversal force of this structure. And by combination to the current road bridges criterion value and data of finite element analysis, on the basis of comparetion of three kinds of effective distribution width values, the road bridges criterion value was modified and the effective distribution width correction coefficient under different loading conditions was obtained. And the results demonstrated that the road bridges criterion value was smaller than test results and data of finite element analysis, in order to apply to the effective distribution width calculation of box girder with corrugated steel webs, the former should be multiplied by the coefficient of more than 1.0.