通过试验的方法,研究波形钢腹板PC组合箱梁在偏心荷载作用下,挠度、横向位移、刚性扭转角、箱梁截面的翘曲应变、翘曲应力及波形钢腹板的附加剪应力的分布规律,以了解悬臂波形钢腹板PC组合箱梁在扭转作用下的力学性能。研究表明:波形钢腹板翘曲应变很小,可忽略不计;翘曲应力在底板上呈现明显的直线分布规律,且最大值出现在底板的角点处;波形钢腹板上的剪应力分布较均匀,附加剪应力在腹板上的分布也有类似的规律。 The deflection, lateral displacement, rigid torsion angle, warping strain, warpage stress and additional shearing stress of corrugated steel web under eccentric load were studied by means of the test method Distribution law to understand the mechanical behavior of PC composite box girder with cantilevered corrugated steel web under torsional action. The results show that the warpage of the corrugated steel webs is small and negligible. The warp stress shows a straight line distribution on the bottom plate, and the maximum value appears at the corner of the bottom plate. The shear stress distribution on the corrugated steel webs More uniform, the distribution of additional shear stress in the web has a similar pattern.