基于新型茂木式试验机的真三轴试验及加载边界效应研究

doi:10.13722/j.cnki.jrme.2014.0341

Abstract
Figure/Table
References
Related Citation (15)

Download: PDF (1873 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract A new developed Mogi-type true triaxial test apparatus was introduced. True triaxial tests for marble with mutually overlapping platens were presented. True triaxial tests and three dimensional FE modelling study were carried out on the loading boundary effect. The results indicate that the peak value of strength increases with the ?2(intermediate principal stress). When the strength reaches its maximum value，it tends to decrease. The brittleness increases with increasing ?2. The intermediate principal stress retards the dilatancy onset. The influence of corner effect on the stress and strain distributions of rock specimen subjected to the traditional platens is apparent in true triaxial test due to stress concentration in the corner. And the strength of rock specimen subjected to the mutually overlapping platens is a bit larger than that subjected to traditional platens.

Key words： rock mechanics true triaxial test boundary effect the corner effect end platens

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors

Cite this article:

URL:

https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2014.0341 OR https://rockmech.whrsm.ac.cn/EN/Y2015/V34/Is1/2837

[1] MURRELL S A F. The effect of triaxial stress system on the strength of rocks at atmospheric temperatures[J]. Geophysical Journal of the Royal Astronomical Society，1965，10(3)：231–282. [2] HANDIN J，HEARD H C，MAGOUIRK J N. Effects of the Intermediate at principal stress on the failure of limestone，dolomite and glass at different temperatures and strain rates[J]. Journal of Geophysical Research，1967，72(2)：611–640. [3] MOGI K. Effect of the intermediate principal stress on rock failure[J]. Journal of Geophysical Research，1967，72(20)：5 117–5 131. [4] 许东俊，耿乃光. 岩石强度随中间主应力变化规律[J]. 固体力学学报，1985，1(1)：72–80. (XU Dongjun，GENG Naiguang. The variation law of rock strength with increase of intermediate principal stress[J]. Acta Mechanica Solida Sinica，1985，1(1)：72–80.(in Chinese)) [5] 李小春，许东俊. 中间主应力对岩石强度的影响程度和规律[J]. 岩土力学，1991，12(1)：10–16.(LI Xiaochun，XU Dongjun. Law and degree of rock[J]. Rock and Soil Mechanics，1991，12(1)：10–16.(in Chinese)) [6] TAKAHASHI M，NARITA T，TOMISHIMA Y et al. Various loading systems for rock true triaxial compression test[J]. Journal of the Japan Society of Engineering Geology，2001，42(4)：242–247. [7] LI X. Permeability change in sandstones under compressive stress conditions[Ph. D. Thesis][D]. Ibaraki：Ibaraki University，2001. [8] BRADY B T，WILSON B. An elastic solution of the laterally constrained circular cylinder under uniaxial loading[C]// Proceedings of the Tenth Rock Mechanics Symposium. Austin，Texas：[s. n.]，1968：199–214. [9] PENG S D. Stresses within elastic circular cylinders loaded uniaxially and triaxially[J]. International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts，1971，8(6)：339–432. [10] Al-CHALABI M，HUANG C L. Stress distribution within circular cylinders in compression[J]. International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts，1974，11(2)：45–56. [11] 白世伟，林世胜，朱维申. 单轴压缩圆柱状岩石试件应力分布均匀性的研究[J]. 岩土工程学报，1982，4(4)：193–203.(BAI Shiwei，LIN Shisheng，ZHU Weishen. Uniformity of stress distributions in rock cylinder specimen under uniaxial compression[J]. Chinese Journal of Geotechnical Engineering，1982，4(4)：193–203.(in Chinese)) [12] 潘鹏志，周辉，冯夏庭. 加载条件对不同尺寸岩石单轴压缩破裂过程的影响研究[J]. 岩石力学与工程学报，2008，27(增2)：3 636–3 642. (PAN Pengzhi，ZHOU Hui，FENG Xiating. Research on effect of loading conditions on failure processes of rocks with different sizes under uniaxial compression[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(Supp.2)：3 636–3 642.(in Chinese)) [13] 石露，李小春. 真三轴试验中端部摩擦效应分析[J]. 岩土力学，2009，30(4)：1 159–1 164.(SHI Lu，LI Xiaochun. Analysis of end friction effect in true triaxial test[J]. Rock and Soil Mechanics，2009，30(4)：1 159–1 164.(in Chinese)) [14] MOGI K. Experimental rock mechanics[M]. London：Taylor and Francis/Balkema，2007：66–74. [15] 许东俊. 茂木岩石真三轴压缩仪的结构及特点[J]. 岩土力学，1980，2(3)：77–84.(XU Dongjun. The structural and features of Mogi?s true triaxial compression apparatus for rock[J]. Rock and Soil Mechanics，1980，2(3)：77–84.(in Chinese)) [16] TAKAHASHI M，KOIDE H. Effect of the intermediate principal stress on strength and deformation behavior of sedimentary rocks at the depth shallower than 2000 m[C]// Rock at Great Depth. MAURY V，FOURMAINTRAUX D，ed. Rotterdam：A. A. Balkema，1989：19–26. [17] LI X，SHI L，BAI B，et al. True-triaxial testing techniques of rocks-state of the art and future perspectives[C]// Proceedings of True Triaxial Testing of Rocks. KWASNIEWSKI M，LIX，TAKAHASHI M，ed. London：CRC Press，2012：3–18. [18] 陈景涛，冯夏庭. 高地应力下岩石的真三轴试验研究[J]. 岩石力学与工程学报，2006，25(8)：1 537–1 543.(CHEN Jingtao，FENG Xiating. True triaxial experimental study of rock with high geostress[J]. Chinese Journal of Rock Mechanics and Engineering，2006，25(8)： 1 537–1 543.(in Chinese)) [19] ESAKI T，KIMURA T. Mechanical behavior of rocks under generalized high stress conditions[C]// Rock at Great Depth. MAURY V，FOURMAINTRAUX D，ed. Rotterdam：Balkema，1989：123–130.