铁路隧道软弱基底处理技术方案经济性分析  

Economic Analysis of Technical Schemes for Treating Weak Bases in Railway Tunnels

作　　者：袁东 马跃龙 YUAN Dong;MA Yuelong(China Railway No.2 Engineering Group Co.,LTD.,Chengdu 610031,China;China Railway Group Limited Engineering Economic Research Institute,Beijing 100000,China)

机构地区：[1]中铁二局集团有限公司,成都610031 [2]中国中铁股份有限公司工程经济研究院,北京100000

出　　处：《铁路工程技术与经济》2025年第1期41-46,共6页Railway Engineering Technology and Economy

摘　　要：近年来,我国铁路工程建设取得举世瞩目的成就,尤其是西南复杂艰险山区铁路长大隧道施工技术水平持续提升,逐渐形成了较为成熟的“隧底灌注桩+筏板结构”和“隧底袖阀管注浆+筏板结构”等隧道软弱基底处理方式。在设计、施工阶段,如何选择更为高效、经济的处理方案,是铁路建设者需要思考的问题。本文以贵南铁路德庆隧道为样本,对隧道软弱基地处理灌注桩和袖阀管复合桩的施工效率和经济性进行研究分析,为设计、施工合理选择方案提供参考。In recent years,remarkable achievements have been made in China's railway engineering construction.Especially,the construction technology level of long and large tunnels in the complex and difficult mountainous areas in southwest China has been continuously improved,and relatively mature treatment methods for weak tunnel bases,such as the"cast-in-place piles at the tunnel bottom+raft structure"and the"sleeve valve pipe grouting at the tunnel bottom+raft structure",have gradually taken shape.In the design and construction stages,how to select a more efficient and economical treatment plan is an issue that railway constructors need to consider.Taking the Deqing Tunnel of the Guiyang-Nanning Railway as a sample,this paper conducts research and analysis on the construction efficiency and economy of cast-in-place piles and sleeve valve pipe composite piles for the treatment of weak tunnel bases,so as to provide references for the reasonable selection of plans in design and construction.

关 键 词：铁路隧道 软弱基底 处理方案经济性分析 

分 类 号：U455.49[建筑科学—桥梁与隧道工程]