大坡度桥梁设计特殊性解析与要点梳理

Analysis on Particularity and Key Points in Design of Steep Slope Bridge

在城市或山区,因受场地自然条件及规划条件限制,各等级道路经常需要在桥位处设置较大纵坡,有时甚至需适当突破规范中有关纵坡的非强制条款。设计此类桥梁过程中,有很多与常规桥梁不同的关键节点需要进行特殊设计,以保证结构安全、行车安全和舒适性。从实用角度出发,通过梳理典型案例的设计过程,对该类问题逐一进行了归纳总结,提出了可行的解决办法,为同类项目的设计工作提供参考。

In city or mountain area,due to the natural conditions and planning conditions of the site,each grade road often needs to set up a steep longitudinal slope at the bridge position,and sometimes even needs to break through the non-mandatory provisions of longitudinal slope.In the process of designing this kind of bridge,it is found that a lot of key nodes different from the conventional bridge need to be specially designed to ensure the structural safety,driving safety and comfort.By combing the design process of the typical case,this paper summarizes the problems from the practical purpose,and puts forward the feasible solutions,which can be referred for the design of the similar projects.