水利水电科技进展2011，Vol.31Issue(6)：35-40,73,7.DOI:10.3880/j.issn.1006-7647.2011.06.010
云南红土加筋效应研究
Reinforcement mechanism of Yunnan laterite
摘要
Abstract
Based on the results of biaxial tests on reinforced Yunnan laterite, the effects of drainage conditions, reinforcing materials and geogrid layers on the reinforcement of Yunnan laterite were studied. Hie reinforcement effects were measured by means of the coefficients of reinforcement effects, normalized reinforcement effects and weighted reinforcement effects. The results shows that the coefficient of the reinforcement effects doesn t change evidently with the change of confining pressure, but the coefficient of the normalized reinforcement effects decreases and tends to zero when the confining pressure increases. The coefficients of the weighted reinforcement effects of strength and deformation increase but those of pore pressure decrease with the increase of the geogrid layers. For the completely drained reinforced laterite samples, the coefficient of the strength reinforcement effects is larger than 1 and increases with the increase of the layers. For the consolidated and undrained reinforced laterite samples, the coefficients of both the strength and deformation reinforcement effects increase but those of the pore pressure decrease with the increase of the geogrid layers. For the completely undrained reinforced samples, the coefficients of both the strength and deformation reinforcement effects are not larger than 1. The reinforcement mechanism of laterite can be interpreted from the aspects of isolation effects, resistance effects, arching effects, compaction effects and pore pressure effects of the reinforcing materials.关键词
加筋红土/排水条件/加筋效果/加筋机理Key words
reinforced laterite/ drainage condition/ reinforcement effect/ reinforcement mechanism分类
建筑与水利引用本文复制引用
黄英,符必昌,王海军,金克盛,张祖莲..云南红土加筋效应研究[J].水利水电科技进展,2011,31(6):35-40,73,7.基金项目
国家自然科学基金(59968002,50868009) （59968002,50868009）
