秦巴山区软弱变质岩路基填料浸水前后的变形特性

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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.

Key words： road engineering；Qinling&mdash Bashan mountainous region；soft metamorphic rock；soaking deformation；cyclic loading

Received: 14 July 2009

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	Articles by authors
	YANG Lingyun
	WANG Xiaomou
	ZHANG Zhe
	LIU Peng

Cite this article:

YANG Lingyun,WANG Xiaomou,ZHANG Zhe, et al. DEFORMATION CHARACTERISTICS OF ROADBED FILLING OF SOFT METAMORPHIC ROCK BEFORE AND AFTER SOAKING IN QINLING—BASHAN MOUNTAINOUS REGION[J]. , 2010, 29(S2): 3536-3541.

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https://rockmech.whrsm.ac.cn/EN/Y2010/V29/IS2/3536

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