摘要
为了解决非线性蠕变模型的参数取值问题,需要把握参数变化规律,提出了FLAC3D的Cvisc模型中关于强度参数随蠕变时间变化的FISH语言编写形式,探讨了黏聚力与内摩擦角不同的变化情形对加速蠕变变形的影响规律,得出了湛江黏土在高偏应力条件下的蠕变变形过程中,强度参数以黏聚力减小或先有所增大后减小为主的初步结论.
In order to solve the problem of parameter selection of nonlinear creep model,it is necessary to grasp the change of parameters. The FISH language of that the variation of intensity parameters with creep time in Cvisc model of FLAC3 D was proposed. The influence of different cohesion and internal friction angle on thedeformation of accelerated creep was discussed,and a preliminary conclusion was drawn that the strength parameters of Zhanjiang clay were reduced or first increased and then decreased under creep of the condition of high deviatoric stress. It shows that the research contributes to exploring the law of accelerating creep,and has important theoretical significance and practical reference value for the correct simulation of creep phenomenon.
出处
《北京工业大学学报》
CAS
CSCD
北大核心
2018年第3期327-335,共9页
Journal of Beijing University of Technology
基金
南昌航空大学博士启动资助项目(EA2012111000)
广西防灾减灾与工程安全重点实验室开放课题资助项目(2016ZDK013)
广西大学工程防灾与结构安全教育部重点实验室开放课题资助项目(2016ZDK013)
关键词
加速蠕变
变强度参数
湛江黏土
accelerated creep
variable strength parameters
Zhanjiang clay
