公路隧道位移判定基准研究

刘大刚  王明年

（西南交通大学 地下工程系，四川 成都   610031）

摘  要：位移判定基准的设定是采用位移量测信息评价隧道结构安全性的一个关键性问题，传统位移控制基准值的确定方法通常依赖于工程经验，其数据的可靠性不大。本文通过采用支护开裂观察、位移速率信息两个指标进行综合分析，提出四个位移监测管理水平，并根据实测位移－时间时态曲线确定了各管理水平的位移控制基准值，以实现隧道结构安全性评价的准确性。

关键词：公路隧道；位移控制基准；位移监测管理水平；位移－时间时态曲线

中图分类号：U459.5                           文献标识码：A

Study on Displacement Judgement Criteria of Road Tunnel

 LIU Da-gang  WANG Ming-nian

(Dept. of Underground Engineering, Southwest Jiaotong University, Chengdu  610031  P.R.China)

Abstract: The enactment of displacement determinant criteria is one of the pivotal issues for evaluating security of tunnel structure introduce displacement measure information. The traditional method ensuring the value of displacement determinant criteria depends on engineering experience usually, so reliability of the value is bad. This paper advances four managing level for displacement measurement by synthesizing two indexes of timbering craze examining and displacement velocity information and ensures their each value of displacement determinant criteria depending on displacement－time tense curve, the aim is to realize the veracity of evaluating security of tunnel structure.

Key words: road tunnel; displacement cortrol criteria; managing level for displacement measurement; displacement－time tense curve