地下隧道与跨河桥梁结合设计

从昆明某城市下穿隧道与跨河桥梁共同设计的工程实例,介绍其设计过程中的一些重、难点,以供类似工程参考。通过多方案比选和初步估算,确定了该地质条件下合理的基础形式;然后通过几种模型的分析比较得出了较合理的地基土的竖向基床系数。通过以上计算、分析和实际施工效果表明该项目的设计是安全、经济和美观的。

Design of Underground Tunnel and River-crossing Bridge

Taking the design of an urban underground tunnel together with a river-crossing bridge in Kunming as an engineering sample,this paper introduces some important and difficult points in the design process referenced for the similar projects.By the scheme comparison and preliminary estimation,the reasonable foundation form is determined under this geological condition.And then by analyzing and comparing several models,the more reasonable vertical foundation bed coefficient of subgrade soil is obtained.Through the above calculation,analysis and practical construction,the results show that the design of this project is safe,economical and beautiful.