本文選題：盾構(gòu)隧道 + 地震響應(yīng)�。� 參考：《山東農(nóng)業(yè)大學學報(自然科學版)》2014年01期

【摘要】：復(fù)雜地質(zhì)條件下盾構(gòu)隧道地震響應(yīng)問題已成為當前工程界研究的重點,其研究涉及盾構(gòu)施工過程中的土-水-結(jié)構(gòu)的相互作用及地震作用下土體液化、結(jié)構(gòu)破壞等多方面。以數(shù)值分析方法模擬完全滲流-應(yīng)力耦合情況下盾構(gòu)隧道施工、固結(jié)過程;隨后采用非線性動力-滲流應(yīng)力耦合分析方法計算盾構(gòu)隧道的地震響應(yīng),據(jù)此分析其安全性。該方法應(yīng)用于天津地鐵隧道某段工程,研究復(fù)雜地質(zhì)條件下盾構(gòu)隧道的地震響應(yīng)。研究結(jié)果表明:在Ⅷ度地震作用下,該隧道各土層不會發(fā)生液化;襯砌應(yīng)力變化幅度不大,拉、壓應(yīng)力均遠小于混凝土抗拉、抗壓強度,是安全的;地震對隧道洞徑影響不大;地表橫向相對位移較大,而豎向相對位移很小,這表明橫向地震更容易導致盾構(gòu)隧道損害。
[Abstract]:The seismic response of shield tunnel under complex geological conditions has become the focus of the engineering field. The research involves the soil-water structure interaction in shield tunneling process and the soil liquefaction and structure failure under seismic action and so on. The numerical analysis method is used to simulate the construction and consolidation process of shield tunnel under the condition of complete seepage and stress coupling, and then the nonlinear dynamic and seepage stress coupling analysis method is used to calculate the seismic response of shield tunnel, and the safety of shield tunnel is analyzed accordingly. The method is applied to a section of Tianjin subway tunnel to study the seismic response of shield tunnel under complex geological conditions. The results show that under the earthquake of 鈪，

本文編號：1985816