海底隧道最小岩石覆盖厚度确定方法研究  

STUDY ON DETERMINATION METHOD FOR MINIMUM ROCK COVER OF SUBSEA TUNNEL

作　　者：李术才[1] 李树忱[2] 徐帮树[2] 王汉鹏[1] 丁万涛[1] 

机构地区：[1]山东大学岩土与结构研究中心,山东济南250061 [2]山东大学土建与水利学院,山东济南250061

出　　处：《岩石力学与工程学报》2007年第11期2289-2295,共7页Chinese Journal of Rock Mechanics and Engineering

基　　金：国家自然科学基金重点项目(50539080);国家自然科学基金面上项目(50574053)

摘　　要：目前国内正在修建或拟修建多条海底隧道,其最小岩石覆盖厚度是海底隧道纵断面线路设计的主要参数之一,将直接制约着海底隧道的安全和工程造价。为此,开展了确定海底隧道最小岩石覆盖厚度的确定方法和准则研究,并综合分析了各种不同方法确定的海底隧道最小岩石覆盖厚度对最终岩石覆盖厚度的权重影响。通过加权的方法得到了确定海底隧道最小岩石覆盖厚度的方法和原则。最后结合工程实例,应用上述方法,得到了宁波象山港海底隧道最小岩石覆盖厚度。At present, many subsea tunnels are under construction or design in China, and the minimum rock cover is one of main issues in subsea tunnel vertical cross-section lining design~ and the subsea tunnel cost and safety are directly governed by the minimum rock cover. The determination method and criterion for the minimum rock cover depth is studied. Different methods determining the minimum rock cover depth are analyzed; and the factors of the different methods for the minimum rock cover are researched. The idea and method to determine the minimum rock cover depth of the subsea tunnel by the weight factors are also obtained. At last, combining with practical subsea tunnel engineering, the minimum rock cover of the Ningbo Xiangshan Harbour subsea tunnel by the above methods is analyzed.

关 键 词：海底隧道 数值分析 最小岩石覆盖厚度 工程类比 断裂损伤本构模型 权重 

分 类 号：U459.5[建筑科学—桥梁与隧道工程]