Experimental Studies of Creep Characters of Tunnel Lining Concrete

Jian Ren Gao; Gang Zhang; An Li Wang; Sheng Zhang; Xiao Guang Jin

doi:10.4028/www.scientific.net/AMR.875-877.657

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 875-877Experimental Studies of Creep Characters of Tunnel...

Experimental Studies of Creep Characters of Tunnel Lining Concrete

Abstract:

Adopting MTS815 hydraulic servo system, through triaxial compressive deformation and triaxial creep experiment result of tunnel supports, research the stress-strain and creep properties of tunnel supports. Test results show that deformation process of support concrete displays obvious strain softening, instantaneous elastic strain increments with stress level and strain of creep curve appears increased trend with time. Creep curve of concrete drive to a fixed value when stress level is lower and strain rate of concrete more and more small. The generalized Kelvin model of three element and LUBBY2 model are feasible as creep model of concrete support. Based on the relation of creep characteristic curves for rock salt, the creep parameters of generalized Kelvin model and LUBBY2 model are advanced.

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Periodical:

Advanced Materials Research (Volumes 875-877)

Pages:

657-663

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.875-877.657

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Online since:

February 2014

Authors:

Jian Ren Gao, Gang Zhang, An Li Wang, Sheng Zhang, Xiao Guang Jin

Keywords:

Creep Model, Creep Parameters e, Lining Structure, Triaxial Compression Test, Tunnel

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