中文摘要：

通过建立三跨连续的单箱双室波形钢腹板箱梁桥模型，采用精细化的ANSYS空间网格划分，研究箱梁宽跨比、翼缘宽跨比、横隔板位置、波纹形状、波形钢板厚、波形钢板高度等参数对多室波形钢腹板箱梁应力增大系数和位移增大系数的影响，探究其对偏载系数的敏感度，并与理论分析方法进行对比。结果表明：应力增大系数与位移增大系数的变化规律有差异，中跨的偏载系数值要略大于边跨，宽跨比、横隔板位置、腹板厚度与应力增大系数呈正相关，翼缘宽跨比、横隔板位置、腹板高度与位移增大系数呈正相关，偏载系数对波形钢腹板相关参数的敏感度较低。

英文摘要：

It was established a model of three-span continuous single-box double-cell box girder bridge with corrugated steel webs . Through the refined spatial meshing with the software ANSYS, the influences of parameters on stress increment coefficient and displacement amplification coefficient of the multi-cell single-box composite box girder were analyzed. The parameters included the ratio of box chamber＇ s width and span, the ratio of flange plate＇ s width and span, the position of diaphragm, corrugate shape, the thickness of the steel plate and the height of corrugated steel plate. It was explored its sensitivity to the eccentric load enhancement coefficient, and compared with the theoretical analysis method. The results of the analysis and study showed that the variation law of stress increment coefficient and displacement increment coefficient was different, the value of eccentric load enhancement coefficient in midspan was slightly larger than that in sidespan; the ratio of box chamber＇ s width and span, the position of diaphragm, web plate thickness and stress increment coefficient were positively correlated; the ratio of flange plate＇ s width and span, the position of diaphragm plate, the height of webs and displacement increment coefficient were positively correlated, eccentric load enhancement coefficient had low sensitivity to the relevant parameters of corrugated steel webs.