基于Cosserat理论的柱状岩体断续节理本构模型研究  

Study of Intermittent Constitutive Model of Columnar Jointed Rock Masses Based on Cosserat Theory

作　　者：张龙[1] 朱珍德[1,2] 何志磊[1] 吴磊磊[1] 

机构地区：[1]河海大学岩土工程科学研究所,南京210098 [2]温州大学建筑与土木工程学院,浙江温州325035

出　　处：《三峡大学学报（自然科学版）》2013年第4期49-52,共4页Journal of China Three Gorges University：Natural Sciences

摘　　要：针对白鹤滩柱状节理岩体的各向异性力学特性,考虑节理部分引起的弯曲效应,采用Cosser-at理论和材料连续均匀假设,得到规则岩体一组断续节理的Cosserat本构关系,然后根据规则六棱柱形岩体结构特点,视平面为三组断续节理的复合,得到柱状节理岩体平面本构关系,最后针对白鹤滩工程实例,验证本文模型的正确性.According to anisotropic mechanical properties of columnar joints rock mass in Baihetan and ben- ding effects of joint sections, Cosserat constitutive relation of a group intermittent joints of regular rock mass can be obtained by Cosserat theory and the hypothesis of material＇s continuity and uniformity. Based on struc- tural characteristics of regular hexagonal prisms, columnar joints plane＇s constitutive relation of rock mass is also derived by regarding the plane as the composite of three groups of intermittent joints. Finally, the cor- rectness of the model is proved by Baihetan engineering example.

关 键 词：柱状节理岩体 各向异性 断续节理 Cosserat各向异性本构模型 

分 类 号：TU452[建筑科学—岩土工程]