摘要
洞室地基内新建隧道问题将使隧道围岩中的应力组成极其复杂,是一个相对少见特殊岩土工程课题,理论公式及经验均存在其局限性和条件的不匹配问题,应用传统公式难以计算、分析,有必要引入新的分析和评价手段。本文通过工程勘察实例,采用有限单元数值模拟的方法,对洞室地基内新建隧道的稳定性问题进行了分析,其结果较好地反映了工程实际,对勘察报告的结论与建议的形成起到了很好的参考作用。
The new tunnel problem in cavern foundation makes the composition of tunnel surrounding rock stress very complex. It is a relatively rare special geotechnical engineering subject. The theoretic and experiential formulas are limitations and conditions do not match the problem, so the application of the traditional formula is difficult to calculate and analyze. It is necessary to introduce a new method of analysis and evaluation. Through examples of geotechnical engineering survey, the stability of the new tunnel in cavern foundation is analyzed using finite element method. The result reflects the actual project, and it plays a good reference for the investigation report＇s conclusions and suggestions.
出处
《城市勘测》
2008年第5期154-156,共3页
Urban Geotechnical Investigation & Surveying
关键词
洞室地基
有限单元法
围岩
Cavern Foundation
Finite Element Method
Surrounding Rock
