柏杨湾软弱围岩连拱隧道支护结构变形与受力分析

结合宜（宾）水（富）高速公路柏杨湾双连拱隧道的施工，通过对支护结构的现场监控量测，获得支护结构不同部位变形和受力的实测数据。分析在软弱围岩条件下双连拱隧道支护结构的变形和受力情况，并探讨时间因素对它们的影响，为同类隧道的设计和施工提供参考。

Analysis of Deformation and Stress of Supporting Structure of Baiyangwan Connecting-arch Tunnel with Weak Wall Rock

In combination with construction of Baiyangwan double connecting-arch tunnel on Yibin-Shuifu Expressway,this paper obtains the measured data about deformation and stress of different parts of the supporting structure via monitoring and measurement for the support structure on site.This paper also analyzes the deformation and stress of the supporting structure of double connecting-arch tunnel under weak wall rock and probes into the influences of time on them,providing references for design and construction of tunnels of the same type.