Research on Shear Creep Property of Soft Rock in Dam Foundation

Abstract:

Creep characteristic is one of the most important mechanical characteristics of rock. It controls the stability of rock engineering. Under step load conditon, the shear creep test of argillaceous siltstone which was collected in dam foundation is performed by using the RMT150c rock and soil mechanics testing machine. The shear creep curves under different normal stresses show that the argillaceous siltstone is very significant in creep, which should be considered in the stability analysis of dam foundation. According to the analysis of experimental results, the long-term shear strength parameters are determined to provide reference for engineering survey and design.

• Periodical: Advanced Materials Research (Volumes 243-249)
• Pages: 2744-2747
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.243-249.2744
• Online since: May 2011
• Authors: Yu Wang, Hua Feng Deng, Tao Lu, Zong Yong Zhao
• Keywords: Argillaceous Siltstone, Dam Foundation, Long-Term Shear Strength, Shear Creep

References

[1] JIA Y, SONG XC, DUVEAU G, et al. Elastoplastic damage modelling of argillite in partially saturat -ed condition and application [J]. Phys Chem Earth,2007,32(14):656-66.

DOI: 10.1016/j.pce.2006.02.054

[2] Haiping Yuan. Study on the rheologic fracture of jointed rock mass under inducing condition and its engineering application[D]. Changsha: Resources and Safety Engineering Faculty of Central South University, 2006.(In Chinese)

[3] Zhongting Zhang, Hong Wang, Zhenyu Tao. Research on creep properties of rock[J]. Journal of Yangtze River Scientific Research Institute, 1996, 13(Supp): 1－5. (In Chinese)

[4] LI Yong-sheng,XIA Cai-chu. Time-dependent tests on intact rocks in uniaxial compression[J]. International Journal of Rock Mechanics and Mining Sciences&Geomechanics Abstracts, 2000, 37(3):467－475. (In Chinese)

DOI: 10.1016/s1365-1609(99)00073-8

[5] XU Wei-ya,YANG Sheng-qi,YANG Song-lin,et al.Investigation on triaxial rheological mechanical properties of greenschist specimen(I):experimental results[J].Rock and Soil Mechanics,2005,26(4):531－537. (In Chinese)

[6] YANG Chun-he,Daemen J J K,YIN Jian-hua.Experimental investigation of creep behavior of salt rock[J]. International Journal of Rock Mechanics andMining Sciences,1999,36(3):233－242.

DOI: 10.1016/s0148-9062(98)00187-9

[7] Enrico Maranini,Tsutomu Yamaguchi.A non-associated viscoplastic model for the behaviour of granite in triaxial compression[J].Mechanics of Materials,2001,33(5):283－293.

DOI: 10.1016/s0167-6636(01)00052-7

[8] SHAO J F,ZHU Q Z,SU K.Modeling of creep in rock materials in terms of material degradation[J]. Computers and Geotechnics,2003,30(7):549－555.

DOI: 10.1016/s0266-352x(03)00063-6

[9] Maranini E,Brignoli M. Creep behaviour of a weak rock: experimental characterization[J]. Inter -national Journal of Rock Mechanics and Mining Sciences,1999,36(1):127－138.

DOI: 10.1016/s0148-9062(98)00171-5

[10] XU Wei-ya,YANG Sheng-qi,XIE Shou-yi,et al.Investigation on triaxial rheological mechanical properties of greenschist specimen(II):model analysis[J].Rock and Soil Mechanics,2005,26(5):693－698. (In Chinese)

[11] Specifications for rock tests in water conservancy and hydroelectric engineering SL264-2001. (In Chinese)

[12] LAMA R D， VUTUKURI V S. Handbook on mechanical properties of rocks，testing techniques and results(Vol. II) [M]. Clausthal：Trans. Tech. Publications，1978.

[13] Yourong Liu, Huiming Tang. Rock mass mechanics[M]. Wuhan: China University of Geosciences Press,1999. (In Chinese)