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由于受地形及通航要求的限制,需要把连续刚构桥设计成跨径不对称或是墩高不对称的形式,为了得出与对称结构相比,在外荷载作用下不对称连续刚构桥的主梁产生的不同程度不对称内力及变形值,以思南县乌江二桥为依托工程,通过有限元程序对不对称连续刚构桥在不同外荷载作用下主梁的内力及变形进行比较分析,从而得出不对称连续刚构桥与对称连续刚构桥在受力及变形上的差别。
Due to the restriction of topography and navigation requirements, the continuous rigid frame bridge needs to be designed as asymmetrical span or asymmetrical pier height. In order to obtain the asymmetric continuous rigid frame bridge under external load compared with the symmetrical structure The internal forces and deformations of the asymmetric continuous rigid frame bridge under different external loads are compared and analyzed by the finite element program based on the different internal forces and deformations caused by the main girder. , So as to draw the difference of stress and deformation between unsymmetrical continuous rigid frame bridge and symmetrical continuous rigid frame bridge.