A discrete element model for predicting shear strength and degradation of rock joint by using compressive and tensile test data
學年 101
學期 1
出版(發表)日期 2012-09-01
作品名稱 A discrete element model for predicting shear strength and degradation of rock joint by using compressive and tensile test data
作品名稱(其他語言)
著者 T. Kazerani; Yang, Z. Y.; Zhao, J.
單位 淡江大學土木工程學系
出版者 Vienna: Springer Vienna
著錄名稱、卷期、頁數 Rock Mechanics and Rock Engineering 45(5), pp.695-709
摘要 A discrete element model is proposed to examine rock strength and failure. The model is implemented by UDEC, which is developed for this purpose. The material is represented as a collection of irregular-sized deformable particles interacting at their cohesive boundaries. The interface between two adjacent particles is viewed as a flexible contact whose constitutive law controls the material fracture and fragmentation properties. To reproduce rock anisotropy, an orthotropic cohesive law is developed for the contacts, which allows their shear and tensile behaviors to be different from each other. Using a combination of original closed-form expressions and statistical calibrations, a unique set of the contact microparameters are found based on the uniaxial/triaxial compression and Brazilian tension test data of a plaster. Applying the obtained microparameters, joint specimens, made of the same plaster, are simulated, where the comparison of the obtained results to laboratory data shows a reasonable agreement.
關鍵字 Discrete element method;Orthotropic cohesive contact model;Microparameter;Rock joint;Degradation
語言 en
ISSN 1434-453X
期刊性質 國外
收錄於 SCI
產學合作
通訊作者
審稿制度
國別 AUT
公開徵稿
出版型式 ,電子版,紙本
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