脆硬性玄武岩体经验蠕变模型研究  

Empirical creep model of brittle and hard basalt

作　　者：黄浩[1] 薛新华[1] 王禄洲 张芮椋 Huang Hao;Xue Xinhua;Wang Luzhou;Zhang Ruiliang(College of Water Resource and Hydropower,Sichuan University,Chengdu 610065,China)

机构地区：[1]四川大学水利水电学院,四川成都610065

出　　处：《山西建筑》2020年第14期65-67,共3页Shanxi Architecture

摘　　要：蠕变模型是研究岩体长期变形的基础。经验蠕变模型,即是通过实验数据,从数理统计回归的角度建立蠕变经验方程。基于西南某坝区现场原位压缩蠕变试验数据,采用最小二乘法分析探讨了现有主流蠕变经验模型对于脆硬性玄武岩体的适用性。结论表明,三种类型经验蠕变模型对于现场脆硬性玄武岩体蠕变均具有一定的适用性,其中三参数指数型蠕变模型性能最优,可以作为脆硬性玄武岩体经验蠕变模型,对同类工程具有较高的参考价值。The creep model is the basis for studying the long-term deformation of the rock mass.The empirical creep model is to establish the creep empirical equation from the perspective of mathematical statistics through experimental data.In this paper,based on the in-situ compression creep test data of a dam area in the southwest,the applicability of the existing mainstream creep empirical model for brittle and hard basalt bodies is discussed by least squares method.The results show that the three types of empirical creep models have applicability to the on-site brittle-hard basalt body creep.Among them,the three-parameter exponential creep model has the best performance,and can be used as the creep model for brittle-hard basalt body.It is much valuable for other projects.

关 键 词：蠕变 经验模型 最小二乘法 玄武岩 

分 类 号：TU458[建筑科学—岩土工程]