隧道下穿高速公路路基路面安全监测研究

文章编号:(201602-0021-04

隧道下穿高速公路路基路面安全监测研究

张忠胜

(贵州高速公路集团有限公司,贵州 贵阳  550001

  要:根据构筑物重要性等级及地质情况合理进行监测方案设计,通过对路面、路基浅表层及深层路基进行分项监测,路面沉降在隧道边界向上正投影区域呈反向抛物线形式,路基与路面间差异沉降不大,表现为路基整体下沉;对沉降总体分布进行分析发现:沿隧道轴线,隧道开挖轮廓线之外的地表沉降量逐渐变小。通过合理设计监测方案,对路基路面变形进行掌控,根据监测数据变化情况合理调整施工方案,确保高速公路及隧道安全。

关键词:下穿隧道监测路面沉降路基沉降分层沉降

中图分类号U458          文献标识码A

Safety Monitoring Study of the Subgrade and Pavement

with Tunnel Passing through the Highway

ZHANG Zhong-sheng

Guizhou Communication Construction GroupGuiyang 550001China

AbstractA reasonable monitoring programs were design according to the level of structures’ importance and geology. By sub-monitor on the pavement ,the Shallow embankment and deep embankmentthe results showed that the road surface was in the form of a reverse parabola in the area of the tunnel boundaryand the difference between Subgrade and Pavement was smallwhich appeard overall sink of the Subgrade.By the analysis of the total settlement distribution, the amount of surface subsidence in the outside of the tunnel gradually reduced along the tunnel axis. Whereas the monitoring program was reasonable designed to control the deformation of subgrade and pavement, to adjust the construction plan according to the change of monitoring data,and to ensure the safety of the highway and tunnel.

Key wordsunderpass tunnelmonitorpavement settlementsubgrade settlementlayer settlement