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对于同一座整体式板桥或刚接梁桥,采用刚接板(梁)法计算得到的荷载横向分布系数最大值往往比铰接板(梁)法的结果要大,它表明整体式板桥或刚接梁桥横向整体受力性能不如铰接式板桥或铰接梁桥。显然,这是不合理的。针对这一问题,通过理论分析和数值计算,指出了刚接板(梁)法计算方法存在的不足是在理论推导过程中忽略了沿桥跨方向分布的另外一个弯矩,该弯矩对刚接梁桥沿桥跨方向的变形和弯矩有较大的影响。
For the same monolithic or just-connected beam bridge, the maximum value of transverse load distribution coefficient calculated by the rigid-plate method is larger than that of the hinge beam method. It indicates that the integral type of bridge or As a whole, the overall lateral load performance of a bridge beam is inferior to that of a hinged bridge or an articulated beam bridge. Obviously, this is unreasonable. In order to solve this problem, the theoretical analysis and numerical calculation show that the shortcomings of the calculation method of the rigid plate (beam) method are that the other bending moment distributed along the bridge in the theoretical derivation process is neglected, Then bridge along the bridge span deformation and bending moment have a greater impact.