Abstract:In order to study the deformation characteristics of roadbed filling of soft metamorphic rock before and after soaking in Qinling—Bashan mountainous region,the conventional compression tests and other compression tests under cyclic loading and different soaking loadings on three different lithological roadbed fillings of soft metamorphic rocks are conducted by using large-scale compression apparatus. The research results show that both the water infiltration and the applied cyclic loading can increase the deformation of soft rock filling;and the deformation of different lithological soft metamorphic rock filling induced by water infiltration and cyclic loading is different. Moreover,the wetting deformation increases and the total compression deformation of roadbed filling decreases with the soaking load. By comparing the results of conventional compression tests with those of compression tests under cyclic loading,it is found that cyclic load increases the deformation of soft metamorphic rock roadbed filling. Therefore,the analysis indicates that the roadbed soaking and traffic loading are the two important factors affecting the deformation of soft metamorphic rock roadbed,which cannot be ignored. The above conclusions have certain guide significance for the highway construction of Qinling—Bashan mountainous region,where the soft metamorphic rock is used as roadbed filling.
杨凌云,王晓谋,张 哲,刘 鹏. 秦巴山区软弱变质岩路基填料浸水前后的变形特性[J]. 岩石力学与工程学报, 2010, 29(S2): 3536-3541.
YANG Lingyun,WANG Xiaomou,ZHANG Zhe,LIU Peng. DEFORMATION CHARACTERISTICS OF ROADBED FILLING OF SOFT METAMORPHIC ROCK BEFORE AND AFTER SOAKING
IN QINLING—BASHAN MOUNTAINOUS REGION. , 2010, 29(S2): 3536-3541.
张 丹,李广信,张其光. 软岩粗粒土增湿变形特性研究[J]. 水力发电学报,2009,28(2):52-55.(ZHANG Dan,LI Guangxin,ZHANG Qiguang. Research on moistening test of coarse-grained soil in weak rock[J]. Journal of Hydroelectric Engineering,2009,28(2):52-55.(in Chinese))
[11]
葛修润,蒋 宇,卢允德,等. 周期荷载作用下岩石疲劳变形特性试验研究[J]. 岩石力学与工程学报,2003,22(10):1 581-1 585.(GE Xiurun,JIANG Yu,LU Yunde,et al. Testing study of fatigue deformation law of rock under cyclic loading[J]. Chinese Journal of Rock Mechanics and Engineering,2003,22(10):1 581-1 585.(in Chinese))
[1]
李 鹏,李 振,刘金禹. 粗粒料的大型高压三轴湿化试验研究[J].岩石力学与工程学报,2004,23(2):231-234.(LI Peng,LI Zhen,LIU Jinyu. Slaking test study of coarse aggregate under high triaxial stress condition[J]. Chinese Journal of Rock Mechanics and Engineering,2004,23(2):231-234.(in Chinese))
[6]
BERTACCHI P,BELLOTTI R. Experimental research on materials for rock fill dams[C]// Proceedings of the 10th International Congress on Large Dams. [S.l.]:[s.n.],1970:511-529.
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