摘要
结合大西客运专线部分连续梁需要冬季施工的要求,根据冬季施工相关规定和特点,重点介绍了挂篮封闭蒸养暖棚设计技术,对连续梁冬季混凝土施工等进行了热工计算,并总结了冬季施工的安全施工要点。采取挂篮全封闭蒸养施工,蒸汽养护效果明显,每个节段施工周期为7～9 d,混凝土浇筑4 d后达到张拉强度。
Considering the construction requirements of a part of continuous beams in winter on Datong-Xi＇an PDL,according to relevant regulations and features of winter construction,the paper emphatically introduces the design techniques of closed hanging basket for warm shed of steam curing and related thermo-engineering calculations,summarizes the key points of safty construction in winter.The effect of closed hanging basket steam curing was obvious,the curing period for each section accounted 7~9 days,concrete 4d strength after casting was adquate for tensioning.
出处
《铁道标准设计》
北大核心
2011年第B12期83-86,共4页
Railway Standard Design
关键词
连续梁
挂篮
暖棚设计
冬季施工
Continuous beam
Hanging basket
Warm shed design
Construction in winter
