溶腔内狭小空间超长混凝土桩施工关键技术  

Key Construction Technology of Super Long Concrete Pile with Narrow Space in Solution Cavity

作　　者：张秦军 Zhang Qin-jun

机构地区：[1]中铁二十局集团第三工程有限公司,重庆400065

出　　处：《建筑技术开发》2020年第5期67-68,共2页Building Technology Development

摘　　要：单线铁路隧道溶腔地质条件复杂,空间狭小,桩基在施工中受到的制约较多。桩基通过岩溶填充物,填充物主要由粉质粘土、粉砂和大块孤石组成,桩基在成孔、钢筋制安、浇筑混凝土过程中难度很大。基于此,主要研究在溶腔狭小空间桩基施工技术,为类似工程提供借鉴。The geological conditions of single track railway tunnel cavern are complex,the space is narrow,and the pile foundation is subject to many restrictions in construction. The pile foundation passes through the karst ?ller,which is mainly composed of silty clay,silty sand and large boulders,the pile foundation is very difficult in the process of hole forming,reinforcement fabrication and installation,and concrete pouring. Based on this,this paper mainly studies the pile foundation construction technology in the cavern narrow space,which provides reference for similar projects for reference.

关 键 词：单线铁路隧道 空间狭小 桩基施工 

分 类 号：TU985[建筑科学—城市规划与设计] TV553[水利工程—水利水电工程]