文档介绍：第 23 卷第 15 期岩石力学与工程学报 23(15):2557~2561
2004 年 8 月 Chinese Journal of Rock Mechanics and Engineering Aug.,2004

双跨隧道穿越大型溶槽的弹性地基梁法

刘小兵
(中南大学土木建筑学院长沙 410075)

提要双跨隧道在岩溶地区施工中遇到大型溶槽,采用弹性地基梁法成功跨越。同时,探讨了弹性地基梁的作用
荷载、计算模式及地基弹性系数,给出了相应的隧道结构型式及施工方法。分析结果表明,适当考虑溶槽充填物
的承载力是可行的。
关键词隧道工程,双跨隧道,溶槽,弹性地基梁,设计,施工
分类号 U 455,TU 348 文献标识码 A 文章编号 1000-6915(2004)15-2557-05

METHOD OF ELASTIC FOUNDATION BEAM FOR DOUBLE
SPAN TUNNEL PASSING THOUGH BIG WATER-ERODED GROOVE

Liu Xiaobing
(Civil Engineering School,Central South University, Changsha 410075 China)

Abstract In excavation of double span tunnel,there exists a big water-eroded groove. The method of elastic
foundation beam is used to cope with the situation. Acting load,calculating pattern and elastic foundation
coefficient are discussed. The analytical results indicate that it is feasible to consider properly the support capacity
of water-eroded groove filling. Reasonable tunnel structure and its corresponding construction method are given.
The tunnel has passed though the big water-eroded groove essfully by using this method.
key words tunneling engineering,double span tunnel,water-eroded groove,elastic foundation beam,design,
construction

遍见到溶蚀晶洞,沿节理面溶蚀形成不规则的岩溶
1 概述槽穴。受地形、地质等条件的限制,根据洞口道路
衔接的需要,隧道设计为双跨结构,隧道建筑限界
双跨隧道在岩溶地区施工中,遇到大型溶槽如净宽 m ,净高 5 m。
何穿越,是具有积极讨论意义的工程实际问题。而隧