摘要
康定机场海拔4 280 m,是世界第二高海拔、高填方机场,填方填料为冰碛土,具有块石含量大、级配差、结构复杂、力学特征差异性大等特点。采用数值模拟方法对机场高填方地基变形与稳定性进行了模拟分析,结果表明:高填方坡脚最大水平位移0.10 m,填方体稳定性好,道槽区最大沉降0.85 m,底部地基沉降0.35 m;土面区最大沉降1.25 m,底部地基沉降0.30 m,均满足工程设计要求。
Kangding airport is the second high-filled airport with 4 280 m elevation.The high embankment is filled with moraine soil with the characteristics of high content of block stone,poor graduation,complicated structure and large differences in mechanical properties.In this paper,the deformation and stability of the high embankment is analyzed in details by numerical simulation.The result shows that the high embankment is in stable with no more than 0.10 m horizontal displacement at the toe of slope.The total maximum settlement under the runway is 0.85 m and the bottom ground settlement is 0.35 m.The total maximum settlement in the lawn is 1.25 m and the bottom ground settlement is 0.3 m.These all meet the requirements of the engineering design.
出处
《路基工程》
2011年第2期111-114,共4页
Subgrade Engineering
关键词
冰碛土
高填方地基
变形
稳定性
数值模拟
moraine soil
high embankment
deformation
stability
numerical simulation
