CAJ | 학술논문

为确保隧道施工安全、减少开挖跨度和节约工程投资,针对某依托工程,首先通过ADINA有限元数值模拟,对不同中墙形状下隧道中墙的受力与变形特征进行了分析,选取了复合式中墙最佳形状,在此基础上,对不同中墙厚度时围岩位移、中墙位移与中墙应力等变化全过程进行了研究,并通过现场监控量测对数值模拟结果进行了对比和验证分析.优化了大跨扁平连拱隧道中墙形状,提出了中墙配筋的关键控制因素和Ⅴ级围岩地段合理中墙厚度.
위학보수도시공안전、감소개알과도화절약공정투자,침대모의탁공정,수선통과ADINA유한원수치모의,대불동중장형상하수도중장적수력여변형특정진행료분석,선취료복합식중장최가형상,재차기출상,대불동중장후도시위암위이、중장위이여중장응력등변화전과정진행료연구,병통과현장감공량측대수치모의결과진행료대비화험증분석.우화료대과편평련공수도중장형상,제출료중장배근적관건공제인소화Ⅴ급위암지단합리중장후도.
In order to assuring the safety of construction,reduce the digging span and economize the engineering investment,by using finite element software ADINA in a certain support engineering,the development rules of middle wall stress and strain in different middle wall shapes were simulated and analysed to choose the optimized composite middle wall shape.On this basis,the variation process of displacement and stress of middle walls with different thicknesses and the corresponding displacements of surrounding rock were researched,and the simulation result was compared and verified by field monitoring.Thus the middle wall shape was optimized,the key control factor of reinforcement and the reasonable thickness of middle wall at surrounding rock grade Ⅴ were put forward.