摘要
针对施工期高心墙堆石坝环境复杂性及变形不确定性等问题,在合理选择非线性时变统计模型因子的基础上,基于Duncan-Chang模型和流变理论,综合分析了填筑过程、降雨、坝体及坝基材料流变等因素对沉降的影响,给出了每个模型因子的表达式,构建了施工期高心墙堆石坝沉降非线性时变统计模型。借助MATLAB平台,开发了计算程序,并将该模型用于糯扎渡高心墙堆石坝施工期沉降变形监控,测点DB-C-VW-01和DB-C-VW-02的平均相对误差分别为-0. 5661%和-0. 7036%,从而验证了施工期高心墙堆石坝沉降非线性时变统计模型的有效性。
In view of the environmental complexity and deformation uncertainty of high core rockfill dam during construction period,based on the reasonable selection of non-linear time-varying statistical model factors,the effects of filling process,rainfall,rheological behavior of dam body and dam foundation materials on settlement are comprehensively analyzed by using Duncan-Chang model and rheological theory,and the expression of each model factor is given. The non-linear time-varying statistical model for settlement of high core rockfill dam during construction period is constructed. The calculation program is developed based on MATLAB platform,and then the constructed model is applied to monitoring settlement and deformation of Nuozhadu high core rockfill dam during construction period. The average relative errors of DB-C-VW-01 and DB-C-VW-02 are-0. 5661% and -0. 7036%. The results show that the model is very effective.
作者
牛景太
梁彬彬
邓志平
郭英嘉
NIU Jingtai;LIANG Binbin;DENG Zhiping;GUO Yingjia(School of Hydraulic and Ecological Engineering,Nanchang Institute of Technology,Nanchang 330099,China)
出处
《南昌工程学院学报》
CAS
2019年第4期1-6,共6页
Journal of Nanchang Institute of Technology
基金
国家自然科学基金资助项目(51769017)
江西省教育厅科学技术研究项目(GJJ161096,GJJ180958)
江西省研究生创新专项资金项目(YC2018-S421)
关键词
高心墙堆石坝
沉降
蠕变
时变统计模型
high core rockfill dam
settlement
creep
evolution statistical model
作者简介
牛景太(1977-),博士,副教授,硕士研究生导师,niujingtai@163.com;通信作者:邓志平(1990-),博士,讲师,zhipingdeng10@126.com.
