摘要
介绍多年冻土区拼装式钢筋混凝土矩形涵洞快速施工技术,按照保护多年冻土的原则,选择寒季施工。基坑开挖前涵节预制并按序运至工点摆放。基坑一次开挖成型并设置遮阳防雨棚。采用合理的拼装方法,同时介绍了基底换填以及拼装完毕后采取的防冻胀处理等施工技术措施。
Introduce quick construction technology of reinforced concrete oblong assembly culvert following “protecting permafrost soil” principle—winter construction. Prior to foundation pit excavation, the culvert section shall be prefabricated and carried to position. Foundation pit shall be formed at one excavation and protected with sunshade. Foundation base replacement and post-assembly frost- heave prevention is also dealt with herein.
出处
《铁道标准设计》
2005年第5期58-59,共2页
Railway Standard Design
关键词
青藏铁路
高原冻土
矩形拼装涵
快速施工
Qin-Zang Railway
permafrost
oblong assembly culvert
quick construction
