斜交角度对异形斜梁桥支点反力的影响分析

Analysis on the impact of inclination upon special-shaped skew beam bridge support reaction

利用ANSYS有限元软件分别建立了两端支承边斜度不等的异形斜交箱梁桥模型,在一期恒载作用下,分析了边支座和中支座的支点反力,得出异形桥的边支座反力均大于斜交桥的边支座反力,且随着斜交角度的增大,两者的比值呈增长的趋势,中支座反力随着斜交角度的增大而增大,最大支反力总是出现在靠近钝角一侧的中支座处。

The paper respectively establishes special-shaped skew beam bridge model with unequal support edge inclination by applying ANSYS finite element software, analyzes the support reaction of side support and middle support under the eternal load action during the first period, and obtains that the side support reaction of special-shaped bridge is bigger than that of skew bridge; furthermore, with the inclination increasing, the rate of the two will increase, the middle support reaction will increase with the inclination increasing ; in addition, the maximum support reaction always occurs in the middle support nearing the obtuse angle side.