摘要
沪杭客运专线跨越沪杭高速公路、杭州市石大路时,在高速铁路桥梁上首次采用了(88+160+88)m自锚上承拱桥式,设计过程中对构造、施工顺序、桥面线形等关键技术进行研究,采用了拱梁固结结构体系,拱上连续梁按先简支后连续的施工方法,桥面预拱度综合考虑自重、活载、徐变发生前与完成后、合龙温度与环境温度等多种因素,确保了大桥快速、安全实施与高速列车平稳、舒适运行。
A self-anchored deck arch bridge with spans of （88 ＋ 160 ＋ 88 ） m was firstly built on Shanghai-Hangzhou passenger dedicated railway, which was a super long bridge over-crossing Shanghai- Hangzhou expressway and Shida road in Hangzhou city. Based on the researches on structure, construction sequence and shapes of deck, rigid connection between girder and arch was adopted. Beams above the arch were built as simply supported first and then as continuous beams. The camber was calculated considering self weight, live load, creep time, temperature of closure and environment, which ensured the safety of construction and smooth and comfortable operation of high-speed trains.
出处
《铁道标准设计》
北大核心
2011年第10期55-58,共4页
Railway Standard Design
关键词
铁路桥
上承式桥
拱桥
关键技术
研究
Railway bridge
Deck bridge
Arch bridge
Key technology
Research
