摘要
依据围岩开挖和岩土力学原理,通过ANSYS软件对围岩级别较低的Ⅳ、Ⅴ级围岩开挖全过程进行三维有限元数值模拟,取开挖荷载释放率与其位移释放率相同,分别得出了这两种围岩中某一断面在开挖过程中各施工步的荷载释放率。并验证了Ⅳ、Ⅴ级围岩中开挖荷载释放率的正确性。
According to the principle of excavation and geotechnical mechanics, the 3D model is used to simulate the.whole process of tunnel excavation in the Ⅳand Ⅴ type of the adjacent rock by using the software ANSYS. For two different types of the adjacent rocks, the load releasing rate of the construction sequence of the cross section is got during the excavation on the condition that the load releasing rate is regarded as the same as related displacement releasing rate. Then its correctness is proved.
出处
《土工基础》
2008年第3期66-69,共4页
Soil Engineering and Foundation
关键词
隧道及地下工程
荷载释放率
位移释放率
围岩开挖
数值模拟
tunnel and undergroud engineering, load releasing rate, displacement releasing rate, excavation of adjacent rock,numerical simulation
