1) single-arch four-lane highway tunnel
单拱4车道公路隧道
1.
Due to the flat arched structure usually adopted in single-arch four-lane highway tunnels,the distribution of the secondary stresses in the surrounding rock mass after tunnel excavation is non-uniform and the reinforcement effect of the primary reinforcement elements is poor.
由于单拱4车道公路隧道通常采用扁平的拱形结构形式,从而导致隧道开挖后围岩的二次应力分布不均匀,初期支护的支护效果不佳。
2) single-arch four-lane road tunnel
单拱四车道公路隧道
1.
The span-ratio of single-arch four-lane road tunnel is less than two or three lanes tunnel s greatly if technology and economic factors are taken into consider.
解决这个问题的办法就是修建多车道隧道，并且使隧道的宽度与隧道以外的道路宽度一致，这就提出了单拱四车道公路隧道的建设问题。
2.
In order to solve this problem effectively, large-span tunnel, for instance, single-arch four-lane road tunnel is constructed.
随着经济的快速发展,公路交通量猛烈增加,单个的小断面隧道已无法满足公路交通的需要,解决这个问题的方法之一就是修建多车道的大断面公路隧道,如:单拱四车道公路隧道。
3.
Due to the super-span,flat section shape and complex construction method of single-arch four-lane road tunnel,the stress distribution is non-uniform,and stress concentration appears in arch foot during construction,which leads to instability or even collapse of the surrounding rock.
单拱四车道公路隧道由于跨度特大、断面形状扁平、施工方法复杂,造成其在施工过程中应力分布不均匀,拱脚应力集中,从而极易导致围岩发生失稳乃至坍塌。
4) multi-arch highway tunnel with three driveways
三车道公路连拱隧道
5) highway multi-arch tunnel
公路连拱隧道
1.
Research on the safety control under blasting vibration of the large-span highway multi-arch tunnel;
大跨公路连拱隧道安全控制爆破研究
补充资料：公路隧道工程
见铁路隧道工程。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条