长大深埋节段式沉管隧道节段接头构造方案比选  

Comparative Study of the Configuration Alternatives of a Segment Joint for a Large Deep-Buried Segmental Immersed Tunnel

作　　者：吕勇刚[1] 黄清飞[1] 刘洪洲[1] 李塔[1] 

机构地区：[1]中交公路规划设计院有限公司,北京100088

出　　处：《现代隧道技术》2015年第1期19-25,共7页Modern Tunnelling Technology

基　　金：国家科技支撑计划项目(2011BAG07B00)

摘　　要：文章以长大深埋节段式沉管隧道工程为背景,根据不同的防水体系及剪力键布置形式,提出并探讨了六种可行的节段接头构造方案,经设计、施工及运营养护等方面的综合比选,认为"内侧(背水侧)OMEGA止水带+中埋可注浆式止水带双道防水系统/外侧(迎水侧)剪力键"的节段接头构造方案更具有优势。在实际工程应用中应根据具体工程情况予以选用。Using the construction of a large deep-buried segmental immersed tunnel as an example, 6 feasible alternatives are proposed for the segment joint configuration based on various arrangements of the waterproof sys- tem and shear keys. Through comprehensive comparison in terms of design, construction, and maintenance, it is determined that the optimal segement joint option is ＂the double waterproof system with OMEGA waterstop at the internal side ＋ injectable waterstop embedded at the middle / shear keys at the external side.＂ However, an ap- propriate ootion should be selected based uoon the practical conditions.

关 键 词：节段式沉管隧道 防水体系 剪力键 节段接头构造 

分 类 号：U459.5[建筑科学—桥梁与隧道工程] U453.6[交通运输工程—道路与铁道工程]