东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2004, Vol. 25 ›› Issue (9): 899-902.DOI: -

• 论著 • 上一篇    下一篇

圆环试样用于岩石间接拉伸强度测试的数值试验

朱万成;冯丹;周锦添;唐春安   

  1. 东北大学资源与土木工程学院;沈阳理工大学辽宁沈阳;香港理工大学土木与结构工程系;东北大学资源与土木工程学院 辽宁沈阳　110004
  • 收稿日期:2013-06-24 修回日期:2013-06-24 出版日期:2004-09-15 发布日期:2013-06-25
  • 通讯作者: Zhu, W.-C.
  • 作者简介:-
  • 基金资助:
    辽宁省自然科学基金资助项目(20031019);;

Numerical test using ring specimen as medium to determine indirect tensile strength of rock

Zhu, Wan-Cheng (1); Feng, Dan (2); Chau, Kam-Tim (3); Tang, Chun-An (1)   

  1. (1) Sch. of Resource and Civil Eng., Northeastern Univ., Shenyang 110004, China; (2) Shenyang Inst. of Technol., Shenyang 110168, China; (3) Dept. of Civil and Structural Eng., Hong Kong Polytech. Univ., Hong Kong
  • Received:2013-06-24 Revised:2013-06-24 Online:2004-09-15 Published:2013-06-25
  • Contact: Zhu, W.-C.
  • About author:-
  • Supported by:
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摘要： 用岩石破坏过程分析数值软件(RFRA)对圆环试样用于岩石间接抗拉强度的测试过程进行数值试验·探讨了圆环内孔直径对于试样破裂模式及其强度测试结果的影响,阐明了不同内孔直径时岩石试样的破裂机制,并对该方法在实际应用中存在的问题进行了解释·数值试验得到的破裂模式和峰值强度与试验结果表现出较好的一致性·基于以上数值试验结果,提出了用开裂载荷来计算岩石间接抗拉强度的新的试验方案·

关键词: 岩石力学, 圆环试样, 拉伸强度, 数值试验, 破坏过程, 破裂机制

Abstract: The RFPA (Rock Failure Process Analysis) code is used to carry out the numerical test using ring specimen as a medium to determine the indirect tensile strength of rock. The effect of diameter of internal hole on failure modes and determined strength of rock specimens is discussed, and the related rock failure mechanisms are clarified. The existing practical problem found in the lab test is also explained according to numerical results. Compared with the test results, both the failure modes and peak loads show in good conformity. Moreover, based on numerical result, a new test scheme is proposed using the cracking load to determine the indirect tensile strength of rock.

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