摘要
基于沥青混凝土的动力三轴试验资料,建立了相应的动力计算模型。采用三维有效应力动力分析方法,结合即将开工的某沥青混凝土心墙堆石坝,利用TSDA程序计算分析了坝体的加速度、动应力反应和大坝的地震永久变形,并对坝基细砂层在地震过程中的液化问题进行了研究,认为沥青混凝土心墙具有良好的抗震性能,大坝在地震过程中是安全的;坝基砂Ⅲ层可能发生液化,需要进行加固处理,分析结论可供同类工程建设参考。
Based on dynamic triaxial test data of asphalt concrete, a dynamic constitutive model is suggested. By 3-D dynamic effective stress analysis method, combining with an asphalt concrete core rockfill dam to be built, seismic responses of acceleration, dynamic stress, seism-induced permanent deformation and seism-induced sand＇s liquefaction are analyzed by using TSDA program. The dam is safe because of well aseismatic performance of asphalt concrete core, third-layer sand in the alluvium may be liquefied and need be reinforced.The conclusion could be referred to the analogous engineering.
出处
《岩土力学》
EI
CAS
CSCD
北大核心
2008年第11期2933-2938,共6页
Rock and Soil Mechanics
关键词
沥青混凝土
堆石坝
三维动力分析
地震永久变形
砂层液化
asphalt concrete
rockfill dam
3-D dynamic analysis
seism-induced permanent deformation
liquefaction of sand
