摘要
通过对陕西省洛惠渠五洞简易盾构法施工现场取样试验,在对试验得出的 Q1 黄土的应力-应变曲线特性进行分析的基础上,假定弹性部分的唯一性关系,把应力空间的加载函数转化为应变空间的加载函数,根据 Il′yushin公设提出了黄土的应变空间弹塑性本构模型,并将模型的计算结果与试验曲线进行比较验证。结果表明,该模型能够较好地模拟 Q1黄土的软化和剪胀特性。
The stress-strain curves and deformation characteristics of Q1 loess achieved from the fifth tunnel of Luohuiqu are analyzed by means of conventional triaxial tests. Based on the Il'yushin hypothesis, the strain-space-based elasto-plastic model of Q1 loess is proposed. Comparison of the experimental curve with the computational result of the model demonstrates that this model can simulate the softening and dilatancy characteristics of Q1 loess.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2004年第24期4147-4150,共4页
Chinese Journal of Rock Mechanics and Engineering
关键词
土力学
Q1黄土
应变空间
软化
弹塑性
本构模型
Deformation
Elastic moduli
Elastoplasticity
Mathematical models
Strain
