上下行隧道立交处围岩稳定性的有限元计算  

3D finite element analysis for stability of surrounding rockmass at grade separation section of up tunnel and down tunnel

作　　者：张玉军[1] 刘谊平[2] 

机构地区：[1]中国科学院武汉岩土力学研究所岩土力学重点实验室,湖北武汉430071 [2]中国科学院武汉物理与数学研究所,湖北武汉430071

出　　处：《岩土力学》2002年第4期511-515,共5页Rock and Soil Mechanics

摘　　要：拟建的丰泽街隧道在泉厦高速公路大坪山隧道下穿过,其平面交角为50°,两洞间岩层厚度仅为6.44m。为了判断两洞交叉处围岩的稳定性,对其进行了三维有限元计算,分析了围岩的应力与变形状态,建议了相应的开挖、支护方法和施工时的监测内容。The Fengzeijie Tunnel to be planed will pass through under the Dapingshan Tunnel located in the Quanzhou-Xiamen Expressway with a crossing angle of 50°in the horizontal plane.At the grade separation section the thickness of rockmass between the two tunnels is only6.44m.In order to judge the stability of the surrounding rockmass at the intersection,the stress and the deformation states in the rockmass were analyzed by a3D finite element computation,and the related excavation and supporting methods as well as the monitoring items during the period of construction were suggested.

关 键 词：隧道 立体交叉 围岩 稳定性 三维有限元分析 工程地质 应力 变形 支护方法 

分 类 号：U452.12[建筑科学—桥梁与隧道工程]