公路隧道位移判定基準(zhǔn)研究
劉大剛 王明年
（西南交通大學(xué) 地下工程系，四川 成都 610031）
摘 要：位移判定基準(zhǔn)的設(shè)定是采用位移量測信息評(píng)價(jià)隧道結(jié)構(gòu)安全性的一個(gè)關(guān)鍵性問題，傳統(tǒng)位移控制基準(zhǔn)值的確定方法通常依賴于工程經(jīng)驗(yàn)，其數(shù)據(jù)的可靠性不大。本文通過采用支護(hù)開裂觀察、位移速率信息兩個(gè)指標(biāo)進(jìn)行綜合分析，提出四個(gè)位移監(jiān)測管理水平，并根據(jù)實(shí)測位移－時(shí)間時(shí)態(tài)曲線確定了各管理水平的位移控制基準(zhǔn)值，以實(shí)現(xiàn)隧道結(jié)構(gòu)安全性評(píng)價(jià)的準(zhǔn)確性。
關(guān)鍵詞：公路隧道；位移控制基準(zhǔn)；位移監(jiān)測管理水平；位移－時(shí)間時(shí)態(tài)曲線
中圖分類號(hào)：U459.5 文獻(xiàn)標(biāo)識(shí)碼：A
Study on Displacement Judgement Criteria of Road Tunnel
LIU Da-gang WANG Ming-nian
(Dept. of Underground Engineering,
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
