土石混合体损伤开裂计算细观力学探讨

doi:10.13722/j.cnki.jrme.2014.s2.079

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Abstract According to the geological origin and meso-structure properties of rock and soil aggregates(RSA)，RSA is viewed as complicated material consisted of three partition：rock blocks，soil matrix and rock-soil interface. The calculation meso-mechanics for RSA is proposed. Cracking failure simulation for RSA，the morphology，distribution，grain composition and rock percentage of rock blocks should not only be considered，but also structure of soil aggregates and rock-soil interface be considered. The primary failure reason for RSA is the elasticity mismatch，essence of failure is the initiation，propagation，penetration of cracks. Problems to be solved using meso-mechanics to explore the meso-damage process in RSA，finding proper methods to describe evolution rule of cracking. Exploring the response of RSA to force field and environment effect，continuum mechanics，statistical damage mechanics and calculation mechanics should be integrated to analysis mesoscopic deformation，damage and cracking，and develop mesoscopic constitutive model for RSA and simulate failure mechanism for rock and soil aggregates. It can clearly clarify the meso-damage mechanism for RSA，which can provide theory assistant to disaster prevention and mitigation.

Key words： soil mechanics rock and soil aggregate(RSA) calculation meso-mechanics Weibull distribution model cracking RFPA2D

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	WANG Yu1
	2
	LI Xiao1

Cite this article:

WANG Yu1,2,LI Xiao1. RESEARCH ON DAMAGE CRACKING FOR ROCK AND SOIL AGGREGATE USING CALCULATION MESO-MECHANICS[J]. , 2014, 33(S2): 4020-4031.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2014.s2.079 OR https://rockmech.whrsm.ac.cn/EN/Y2014/V33/IS2/4020

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