水利与建筑工程学报
水利與建築工程學報
수리여건축공정학보
TECHNIQUE OF SEEPAGE CONTROL
2013年
6期
125-128
,共4页
杨利%张树茂%杨青坡%单其宽
楊利%張樹茂%楊青坡%單其寬
양리%장수무%양청파%단기관
粗粒土%土工格室%三轴试验%强度与变形特性
粗粒土%土工格室%三軸試驗%彊度與變形特性
조립토%토공격실%삼축시험%강도여변형특성
coarse-grained soil%geocell%triaxial test%strength and deformation characteristics
为了深入了解土工格室加筋粗粒土的加筋效果,采用大型三轴试验方法分析了土工格室对粗粒土力学特性的影响,引入加筋效果系数对粗粒土加筋效果进行了较全面的评价,探讨了加筋机理。结果表明:轴向应变较小时,土工格室加筋效果不明显,随着轴向应变的增加土工格室的加筋效果才比较明显。土工格室的各项加筋效果系数在不同围压下均大于1。土工格室不仅直接对格室单元内的土体进行加固,还间接地加固约束土工格室复合结构体附近的土体。
為瞭深入瞭解土工格室加觔粗粒土的加觔效果,採用大型三軸試驗方法分析瞭土工格室對粗粒土力學特性的影響,引入加觔效果繫數對粗粒土加觔效果進行瞭較全麵的評價,探討瞭加觔機理。結果錶明:軸嚮應變較小時,土工格室加觔效果不明顯,隨著軸嚮應變的增加土工格室的加觔效果纔比較明顯。土工格室的各項加觔效果繫數在不同圍壓下均大于1。土工格室不僅直接對格室單元內的土體進行加固,還間接地加固約束土工格室複閤結構體附近的土體。
위료심입료해토공격실가근조립토적가근효과,채용대형삼축시험방법분석료토공격실대조립토역학특성적영향,인입가근효과계수대조립토가근효과진행료교전면적평개,탐토료가근궤리。결과표명:축향응변교소시,토공격실가근효과불명현,수착축향응변적증가토공격실적가근효과재비교명현。토공격실적각항가근효과계수재불동위압하균대우1。토공격실불부직접대격실단원내적토체진행가고,환간접지가고약속토공격실복합결구체부근적토체。
In order to study the mechanical characteristics of coarse-grained soil as well as its reinforcing effect ,the large-scale triaxial tests are carried out to analyze the effects of reinforcing geocell on the mechanical characteristics of coarse grained soil .The effect coefficients are introduced to value the reinfocerment effect comprehensively ,and the func-tion mechanism of geocell is also discussed .The results show that the geocell-reinforced effect is not obivous while the triaxial strain is relatively samll ,and the reinforcing effect of geocell becomes more remarkable along with the increase of axial stain .The coefficients of reinforcing effect are all more than 1 .0 .The geocell not only directly reinforce the soil in the cell ,but also indirectly restrain the soil around the composite structure of geocell .