水利学报2018，Vol.49Issue(3)：313-322,10.DOI:10.13243/j.cnki.slxb.20170732
高压水工隧洞透水衬砌渗流-应力-损伤耦合分析方法研究
Hydro-mechanical coupling analysis of pervious lining in high pressure hydraulic tunnel
摘要
Abstract
For the engineering practices of the high pressure tunnel during the operation process,the reinforcement stresses are generally much less than expected,indicating that the economical purpose is not achieved.The concrete plastic-damage model is used to simulate the lining concrete and the water load is treated as a body force applied to the interior of lining,thus a hydro-mechanical coupling algorithm is proposed.Based on the large-scale finite element software ABAQUS,the secondary development is carried out.The user subroutine in ABAQUS,USDFLD,is adopted to adjust the hydraulic conductivity with the material damage synchronously,and the utility routine GETVRM activated by the Fortran language is utilized to acquire the material damage.And the lining cracking process during the first water-filling period of the hydraulic tunnel is simulated.Moreover,the evolution characteristics of lining damage,pore pressure and reinforcement stress are studied.Additionally,the influence of the conditional cooperation between lining and surrounding rock on the coupling results is discussed.It can be found that the lining cracking characteristic matches well with that in field tests.The evolution characteristic of reinforcement stress shows significant differences when the conditional cooperation considered,indicating that the detachment of lining from surrounding rock is the reason why the reinforcement stress values are generally much smaller than expected.The results obtained by the coupling algorithm proposed in this paper consistent with the general engineering phenomena.It means that this algorithm can be applied to other engineering practices and provide some reference for the lining design problem.关键词
透水衬砌/损伤开裂/耦合/钢筋应力/有条件联合承载Key words
pervious lining/damage and crack/coupling/reinforcement stress/conditional cooperation分类
建筑与水利引用本文复制引用
周利,苏凯,周亚峰,文喜雨,伍鹤皋..高压水工隧洞透水衬砌渗流-应力-损伤耦合分析方法研究[J].水利学报,2018,49(3):313-322,10.基金项目
国家自然科学基金项目(51579194) （51579194）
中央高校基本科研业务费专项资金项目(2042017kf0202) （2042017kf0202）
国家重点研发计划(2016YFC0401803) （2016YFC0401803）
