昆明二环路石虎关立交桥梁设计关键性技术

The key techniques of the Shihuguan interchange design on the second ring road in Kunming

研究目的:石虎关立交控制因素众多,桥梁设计复杂。本文对桥梁结构设计过程中的要点进行分析,重点对新旧桥衔接、跨铁路枢纽桥式方案论证、既有桥上施工方案、异型结构设置等关键性技术问题进行总结。研究结论:提出了城市桥梁结构设计的多种可行、灵活的处理方案,从而可以尽量避免设置复杂结构物,同时还能降低工程造价,缩短施工周期。

Objective: Since there are several control factors of the Shihuguan interchange,the bridge design becomes complicated.This paper analyzes the main points within the bridge design process,and draws conclusions regarding some key technical matters,including the connection of old and new bridges,the demonstration of the bridge design across railway terminals,the construction scheme on existing bridges,and the design of special-shaped structures. Conclusion: This paper proposes some feasible and flexible design schemes about the bridge structures,and thus avoid designing complicated structures and reduce the cost and period of the construction.