摘要
预拱度的合理设置直接影响到分段施工桥梁的正常合龙﹑成桥的线形美观以及列车行驶的平顺性﹑安全性。京沪高铁梁桥具有自重大﹑混凝土等级高、刚度大、预应力度高﹑列车通行速度快﹑频次高等特点,对线形要求更为严格。并且多采用大节段、支架施工,有必要对其预拱度的合理设置进行研究,以满足梁桥的线形和内力要求。通过对影响预拱度的各因素进行理论分析,对京沪高铁连续梁桥预拱度的设置提出建议。
The properly setting of pre-camber directly affects the section construction bridge’s normal shut,bridge line and the stationary and safety of train running.Beam bridges of Beijing-Shanghai high-speed railway have features such as large loads,high grade concrete,high stiffness,high prestress degree and so on.They have strict requirements on bridge line.Scaffolding construction is largely adopted.It is necessary to do research on the properly setting of pre-camber to meet the requirements of the bridge line and internal force.With theoretical research on influencing factors of pre-camber,the authors make suggestions for setting of pre-camber of Beijing-Shanghai high-speed railway.
出处
《施工技术》
CAS
北大核心
2010年第12期84-86,共3页
Construction Technology
关键词
京沪高铁
支架施工
预拱度
仿真分析
Beijing-Shanghai high-speed railway
scaffolding construction
pre-camber
simulation analysis
