Development of a Self-balanced Rock True Triaxial Compression Instrument
American Journal of Civil Engineering
Volume 7, Issue 1, January 2019, Pages: 9-16
Received: Dec. 25, 2018;
Published: Mar. 8, 2019
Views 251 Downloads 116
Tang Yanchun, College of Architecture and Civil Engineering, China Three Gorges University, Yichang, China
Wang Yue, College of Architecture and Civil Engineering, China Three Gorges University, Yichang, China
Liu Ruilong, College of Architecture and Civil Engineering, China Three Gorges University, Yichang, China
Zhou Hui, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, China
Mao Qingfeng, College of Architecture and Civil Engineering, China Three Gorges University, Yichang, China
Follow on us
Based on the analysis of the structure and the performance of similar instruments at home and abroad, a Self-balanced Rock True Triaxial Compression instrument (SRT) was developed. For SRT, complex stress realization, based on three-dimensional stress alone control and change; and the self-balanced structure is adopted on the basis of frame design, which makes the instrument simple and compact; design of lateral composite press plate with embedded rolling roller, the influence of test results on the effect of friction on the side end surface of the specimen under lateral stress constraint can be eliminate effectiveness; The design scheme of transverse double sliding rod is adopted, its validity can be designed by horizontal alignment, and the problem of eccentric compression of specimen can be partly alleviated in horizontal direction. By changing the alkali of the mothed triaxial chamber, both true triaxial and conventional triaxial compression can be tested. Test results of true triaxial and conventional compression of rocks with different lithology were carried out by SRT. The results, such as the deformation and failure characteristics of rock strength in complex stress conditions, have been obtained by SRT, which indicates that the design of SRT is feasible and feasible. The development of this instrument can promote the further development of Chinese rock triaxial testing machine.
True Triaxial, Instrument Design, Self-balanced
To cite this article
Development of a Self-balanced Rock True Triaxial Compression Instrument, American Journal of Civil Engineering.
Vol. 7, No. 1,
2019, pp. 9-16.
Hudson JA, Crouch SL, Fairhurst C. Soft, stiff and servo-controlled testing machines: a review with reference to rock failure [J]. Engineering Geology, 1972, 6 (3): 155-189.
Xu Dongjun, Xing Zhijian, Li Xiaochun, et al. Development of RT3 type rock high pressure true triaxial apparatus [J]. Geomechanics, 1990, 11 (2): 1-14.
Sun Xiaoming, He Manchao, Liu Chengyu, et al. Development of nonlinear mechanical test system for true triaxial soft rock [J]. Journal of Rock Mechanics and Engineering, 2005, 24 (16): 2870-2874.
Li Xinping, Wang Bin, Zhou Guilong. A study on the Distribution of In-situ stress in the mainland of China [J]. Journal of Rock Mechanics and Engineering, 2012, 31 (add. 1): 2875-2880.
Niu Xuechao, Zhang Qingxi, Yue Chinese. Present situation and development trend of rock triaxial testing machine [J]. Geomechanics, 2013, 34 (2): 600-607.
Tang Haiyan, Li Shulin. MTS815 full digital hydraulic servo testing machine [J]. Research and Development of Mining Industry, 2004, 24 (3): 28-31.
Zhang Ming, Lu Yujie, Yang Qiang. Failure probability and strength size effect of Quasi-brittle Materials [J]. Journal of Rock Mechanics and Engineering, 2010, 29 (9): 1782-1789.
Wu Gang, Sun Jun. Deformation and strength characteristics of fractured rock mass under unloading stress [J]. Journal of Rock Mechanics and Engineering, 1998, 17 (6): 615-621.
He Wenxiu, Zhao Qihua, Zhang Haiquan. Deformation, failure and Acoustic Emission characteristics of basalt under Triaxial Compression [J]. Gansu Water Conservancy and Hydropower Technology, 2015, 51 (05): 26-29.
Wu Shang, Liu Yourong, Li Shijia. Experimental study on mechanical properties and mechanical model of limestone under triaxial compression [J]. Proceedings of the Yangtze River Academy of Sciences, 2013, 30 (03): 30-34.
Tian Yong, Yu ran Gang. Energy Analysis of Limestone triaxial Compression process under different confining pressures [J]. Geomechanics, 2014, 35 (01): 118-122 (129).
Tianjun, Lu Gaoming, Li Yuanhui, Shilei, Ren Jinlai. Full stress-strain curve and rheological test function analysis of hard rock triaxial apparatus [J]. Metal Mine, 2018 (10): 151-156.
Zhang Xiwei, Feng Xiating, Kong Rui, Wang Gang and Peng Shuai. Key technology research on true triaxial apparatus for stress-strain curve of hard rock [J]. Journal of Rock Mechanics and Engineering, 2017, 36 (11): 2629-2640.