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在小半径平曲线段桥梁上设较大横坡后立即会在盖梁顶面形成内倾,要保证施工中线和设计中线吻合,就必然在箱梁底面形成外倾,这两种横向位移表现为反向叠加,为此,通过系统分析,提出了对结构尺寸影响的表达式,通过增量分析发现对其影响最大的坡度和结构高度不可能大幅降低以减小增量,在竖向内倾外移的理论基础上结合横向外移,提出了合理的建议方案。对公路桥梁设计和施工具有一定的指导价值。
In the small radius of the curve section of the bridge is located on a large cross-slope immediately after the formation of capping the top of the camber, to ensure that the construction of the line coincides with the design of the center line, it is inevitable in the box to form the bottom of the camber, these two lateral displacement Therefore, through the system analysis, the expression of influence on the size of the structure is proposed. Through the incremental analysis, it is found that the grade and the height of the structure that affect most of them can not be greatly reduced to reduce the increment. Based on the theory of shift and the combination of lateral shift, a reasonable proposal is put forward. The design and construction of highway bridges have some guiding value.