浙北岩溶区公铁立交基础方案设计

The Foundation Design of Highway-railway Overpass in the Karst Area of Zhejiang Northern

某公铁立交地处浙北岩溶发育区,由于地质条件复杂,桥梁基础设计方案对桥梁和铁路的安全至关重要.根据现场情况和规范要求,设计采取了地质逐桩钻孔、上部结构配跨设置优化、钢护筒跟进法施工等一系列有针对性的措施,以确保铁路运营和公铁立交施工的安全.实践证明,设计采用的基础设计方案是合理的.

A highway-railway overpass is located in karst area of zhejiang northern and because of its complex geological conditions,the design scheme of the foundation is very important to the safety of the bridge and railway.According to the site condition and specification requirements,a series of measures such as drilling one hole every pile,optimizing the upside structure and constructing using steel protect sleeve are adopted to insure the safety of the railway and highway-railway overpass.The design scheme is proved reasonable by practice.