某二级公路桥梁拓宽改建设计方案

Widening transformation design scheme of the secondary highway bridge

以某二级公路桥梁拓宽改建设计为实例,分析了该桥梁的现状,结合相关技术标准,对老桥利用的可行性进行了研究,从上部结构及桥面铺装、下部结构、基础等方面提出了老桥拓宽的改建方案,并采取了减小差异沉降的措施,达到了良好的运营效果。

Taking the secondary highway bridge widening design as an example, the paper analyzes the bridge status. Combining with relevant technical criteria, it studies old bridge using feasibility, and puts forward old bridge widening scheme including upper structure and deck paving, bottom structure and foundation, and adopts measures of reducing differential subsidence, and achieves good operation effect as well.