隧道内桩基成孔施工组织及费用研究
Study on Construction Organization and Cost of Pile Foundation Hole Formaton in Tunnel
钱昊1
作者信息
- 1. 中铁二院工程工程集团有限责任公司,成都 610031
- 折叠
摘要
岩溶隧道施工中,经常需要采用桩筏结构对隧底岩溶进行处理,受隧道洞内净空限制,同时考虑到冲击钻对结构安全的影响,只能采用旋挖钻对隧道洞内桩筏基础进行施工,现行铁路定额中缺乏旋挖钻钻石的相关定额,以贵南高铁为依托,采用写实记录法测定了隧道洞内旋挖钻成孔的工料机消耗,并对其进行了单价分析.
Abstract
In the construction of karst tunnels,Pile-raft structures are often used to treat tunnel bottom karst,Considering the limitation of tunnel clearance and the influence of percussion drilling on structural safety,only rotary drilling can be used to construct the pile-raft foundation in the tunnel hole.However,there is a lack of relevant quotas for rotary drilling diamonds in the current railway quotas.Relying on the Guinan high-speed railway,we measured the consumption of labor,material and machine for rotary drilling and drilling in the tunnel by realistic recording method,and the unit price analysis was carried out.
关键词
岩溶隧道/旋挖钻/定额测定Key words
karst tunnel/rotary drilling/rated determination引用本文复制引用
出版年
2024
NETL
NSTL
万方数据