怀邵衡铁路桥梁总体设计

主要介绍怀邵衡铁路全线桥梁的总体设计情况。为了解决该线复杂的地理、地质和环境条件等因素造成全线的设计困难,桥梁设计除按一般简支梁设计外,还提出以大跨度桥梁为辅的解决方案。在岩溶较为发育区域,提出桥梁基础安全持力层和基底位置,并结合实际情况采取人工造壁为主的钻孔成桩措施。施工结果反映该线桥梁设计效果良好。

General Design of Bridges on Huaihua-Shaoyang-Hengyang Railway

This paper describes the general design of the bridges on Huaihua- Shaoyang- Hengyang Railway. In order to solve the design difficulties caused by the complex geographical,geological and environmental conditions,simply supported beam bridge is normally proposed and large span bridge is additionally suggested. In the more developed Karst area,safe stress holding layer is recommended for bridge foundation and foundation position is defined. Furthermore,the artificial drilled pile is employed fundamentally as the actual situation requires. The construction results justify the applicability of the bridge design.