In order to study the distortion effect of corrugated web steel-concrete composite box girder,the simply supported box girder of the approach bridge of Sangyuanzi Yellow River Bridge is taken as the research object,the distortion angle is redefined,the initial parameters are determined by calculat-ing the distortion center and total distortion potential energy,and the distortion effect analysis method consistent with the traditional torsion analysis theory is derived by using the principle of potential en-ergy standing value.According to the engineering example,the variation law of distortion and war-ping stress of corrugated web steel-concrete composite box girder under lane load is studied.The re-search results show that the distortion warping stress accounts for a large proportion of the stress of composite box girder,and the warping normal stress gradually decreases with the increase of the con-crete thickness of the box girder top plate.Adding the bottom concrete to the composite box girder with steel floor can effectively reduce the distortion warping stress.
关键词
波形腹板钢-混组合箱梁/畸变效应/畸变翘曲应力/铺底混凝土
Key words
corrugated web steel-concrete composite box girder/distortion effect/distortion warping stress/bedding concrete
维普
万方数据