摘要
本文对土体采用邓肯-张非线性弹性模型编制了四节点等参元有限元程序DDKEPL。对土工织物加筋的软基上路堤进行了室内模型试验和数值分析,揭示了织物的加筋机理和若干规律,指出了加筋路堤的二种可能破坏形态,为正确进行加筋路堤的设计提出了意见。最后,提出用水平位移曲线或水平位移发展速率曲线结合塑性区开展情况综合评价软基上路堤所处的状态。
In this paper, four-nodal isoparametric element program DDKEPL by using Duncan's nonlinear-elastic model for soil is presented. Based on the numerical analysis and model tests of an embankment on soft ground reinforced with geotextile the behavior and laws of geotextile reinforcement were prohed, and two patterns of potential failure of the embankment reinforced were noticed. The results of the tests provide the principle for design.Finally,suggestions for the design of such embankment and method for predicting the state of a reinforced embankment with the horizontal displacement curve or rate of horizontal displacement and evolution of the plasticity region as criterion are proposed.
出处
《中国公路学报》
EI
CAS
CSCD
北大核心
1990年第4期14-22,31,共10页
China Journal of Highway and Transport
关键词
路堤
加筋机理
模型试验
破坏形态
Nonlinear-elastic FEM Model test Mechanism of reinforcing geotextile Criteria for failure predicting
