公路双连拱隧道中隔墙结构优化研究
夏永旭1 ，鲁彪1，2
（1.长安大学公路学院，西安，710064；2浙江省公路勘察设计院，杭州，310006 ）
摘 要: 针对双连拱隧道中隔墙结构设计与防排水存在的问题，应用有限元数值模拟方法对双连拱隧道中隔墙的结构进行了优化研究。曲中墙顶部支撑是最为合理的对称中隔墙结构形式。中隔墙的厚度宜定在1.5m～1.8m之间。建议中隔墙的高度取4.25m。
关键词：双连拱 隧道 结构 优化
The Optimization of Structure of Mid-board in Highway Multi-arch Tunnel
XIA Yong-xu , Lu Biao
(1. Highway Institute, Chang’an University, Xi’an 710064,China；2.Zhejiang Provincial Plan Design & Research Institute of Communication, hangzhou 310006,China)
Abstract: aiming at the structure of mid-board and the problem of waterproof in multi-arch tunnel, we analyze mid-board of multi-arch tunnel. At last ,we come up curving and top stay-bearing mid-board is the best cross section in multi-arch tunnel.
We also suggest that the width of mid-board should be between 1.5m~1.8m and height of mid-board should be about 4.25m.
Keyword: Multi-arch Tunnel Optimization of Structure