![](/images/graphics-bg.png)
Numerical Analysis of the Anisotropy and Scale Effects on the Strength Characteristics of Defected Rockmass
المؤلفون المشاركون
Liu, Xiabing
He, Shaohui
Wang, Dahai
المصدر
العدد
المجلد 2020، العدد 2020 (31 ديسمبر/كانون الأول 2020)، ص ص. 1-21، 21ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2020-02-01
دولة النشر
مصر
عدد الصفحات
21
التخصصات الرئيسية
الملخص EN
Discontinuous defect in the rockmass is a key influential factor in controlling the strength behavior, and how to estimate the anisotropic strength and scale effect on the defected rockmass is the remaining challenging focus in engineering application.
In the present study, intact tuff samples cored from the Xiabeishan tunnel engineering in situ are conducted by experiment tests (i.e., uniaxial compression test, triaxial compression test, and Brazilian tensile test) to obtain the corresponding mechanical parameters.
Results from the numerical simulations using the particle flow code (PFC) by the flat-jointed model (FJM) are performed to match the macroparameters from experimental results.
It is observed that numerical results have good agreement with the macroscopic mechanical parameters of intact samples including UCS, BTS, triaxial compression strength, and corresponding deformation parameters.
Finally, a series of uniaxial and confining compression tests are conducted by using a synthetic rockmass (SRM) method which is coupled with the discrete element method (DEM) and discrete fracture network (DFN).
Then, the anisotropy and scale effects on the strength characteristics of the defected rockmass are investigated.
The results show that defects have a vital effect on the failure mode and strength behavior of the rockmass in the research region.
The strength parameters are changed with the specimen size.
The REV size of the considered defected rockmass is regarded as 5 × 10 m, and this size is also influenced by the confinement level.
The anisotropy of macroscopic strength parameters is found in the considered defected rockmass, whose stress-strain curves and failure modes are also discussed.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Liu, Xiabing& He, Shaohui& Wang, Dahai. 2020. Numerical Analysis of the Anisotropy and Scale Effects on the Strength Characteristics of Defected Rockmass. Advances in Civil Engineering،Vol. 2020, no. 2020, pp.1-21.
https://search.emarefa.net/detail/BIM-1122062
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Liu, Xiabing…[et al.]. Numerical Analysis of the Anisotropy and Scale Effects on the Strength Characteristics of Defected Rockmass. Advances in Civil Engineering No. 2020 (2020), pp.1-21.
https://search.emarefa.net/detail/BIM-1122062
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Liu, Xiabing& He, Shaohui& Wang, Dahai. Numerical Analysis of the Anisotropy and Scale Effects on the Strength Characteristics of Defected Rockmass. Advances in Civil Engineering. 2020. Vol. 2020, no. 2020, pp.1-21.
https://search.emarefa.net/detail/BIM-1122062
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1122062
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
![](/images/ebook-kashef.png)
تقوم هذه الخدمة بالتحقق من التشابه أو الانتحال في الأبحاث والمقالات العلمية والأطروحات الجامعية والكتب والأبحاث باللغة العربية، وتحديد درجة التشابه أو أصالة الأعمال البحثية وحماية ملكيتها الفكرية. تعرف اكثر
![](/images/kashef-image.png)