不同排水条件加筋红土三轴试验研究  

Experimental Tri-Axial Research of Reinforced Laterite in Different Drainage Conditions

作　　者：黄英[1] 符必昌[1] 金克盛[1] 龚羊庆[1] 李琴书[1] 

机构地区：[1]昆明理工大学电力工程学院,云南昆明650051

出　　处：《昆明理工大学学报（理工版）》2006年第1期56-60,共5页Journal of Kunming University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金(项目编号:59968002);云南省自然科学基金(项目编号:2004E0023M);云南省教育厅教学科研带头人培养基金

摘　　要：以玻璃纤维和土工布作为加筋材料,对比研究红土在三种不同排水条件下加筋前后的抗剪强度特性.三轴试验结果表明:红土在完全固结排水条件下剪切,加筋能提高其抗剪强度,加筋层数越多,强度提高越大;在固结不排水条件下剪切,当加筋层数较少时,加筋后其抗剪强度反而比不加筋时降低,但随着加筋间距的减小,抗剪强度逐渐增大;而在完全不固结不排水条件下剪切,加筋降低其抗剪强度,且抗剪强度随围压的增大而减小.说明红土在不排水条件下加筋应慎重考虑.In order to understand the shear properties of reinforced laterite, fiber and geotextile are used as materials to reinforce laterite in the tests under three drainage conditions. The result is as follows. When consolidated and drained, the reinforced laterite has higher shear strengths; when consolidated hut un - drained, it has lower shear strengths compared with the one un - reinforced, hut whose strength is increasing if more materials are added; when unconsolidated and un - drained, it definitely demonstrates lower shear strengths even though the confining compress is increasing. So a careful thought should be given to reinforcing laterite under un - drained conditions.

关 键 词：加筋土 三轴试验 排水条件 抗剪强度 土工合成材料 

分 类 号：TU472[建筑科学—结构工程]