盾构隧道常见病害及其影响分析

Analysis on Common Disease and Its influence on Shield Tunnel

对盾构隧道病害成因及其影响的分析是隧道养护的重要依据,对以后的养护工作具有重要的指导作用。该文归纳了一般盾构隧道病害的种类及特征,对其形成原因以及对隧道安全状态的影响进行了初步的分析。通过一定的简化,利用二维有限元方法建立了带病害盾构隧道的数值计算模型。此外利用上海长江隧道的建设契机,通过病害力学模型,定量分析了长江隧道在病害影响下的安全状态,对今后的运营和养护做了一些基础性的工作。

The analysis of disease cause and its influence on the shield tunnel is the importantreference for the tunnel maintenance,and has the important instructing action for the future maintenance work.The article sums up the general disease varieties and characters of the shield tunnel,and preliminarily analyzes its cause and the influence on the tunnel safety.2D finite element method is utilized to set up the numerical value calculation model for the shield tunnel with the disease by some simplification.Furthermore,utilizing the construction chance of Shanghai Changjiang River Tunnel,the article quantitatively analyzes the safety status of Changjiang River Tunnel influenced by the disease through the disease mechanics model,which do some basic work for the future operation and maintenance.