摘要
南江特大桥跨越被誉为"喀斯特生态博物馆"的南江大峡谷,架设在地质构造复杂的危岩体上。本桥以其结构复杂,设计、施工难度大成为全线的重点控制工程。主桥采用(92+176+92)m连续刚构,针对本桥安全防护的特殊性及重要性进行了专门的主桥施工安全防护设计。文章着重介绍了主桥的结构设计、整体结构计算、横向环框分析、车桥耦合动力分析、施工安全防护等关键环节,使峡谷景区的桥梁施工安全得到了充分的保证。
Nanjiang Bridge, straddling the grand Nanjiang valley that is honored as karst eco-museum, is built on dangerous rocks. The bridge is regarded as the controlled key project on the line for its complicated formation and puzzlement in design and construction. The main bridge adopts （92 ＋ 176 ＋ 92）m continuous rigid framework and has special safety protection in consideration of its specific characteristics. In this paper, primary focus is laid on the key links such as maim bridge design, calculation for the bridge structure, analysis of lateral frame and coupling dynamics of vehicle and bridge and construction safety protection, which provides sufficient guarantee for the safety construction in the valley areas.
出处
《高速铁路技术》
2012年第3期42-45,73,共5页
High Speed Railway Technology
关键词
铁路桥
连续刚构
结构分析
安全防护
railway bridge
continuous rigid-framework
structure analysis
safety protection
