饱和度对昔格达加筋灰土抗剪强度的影响研究  

Study to saturation of Xigeda reinforced dust on different shear strength

作　　者：汪杰[1,2] 黄双华[1,2] 魏建贵[3] 陈宾[3] 

机构地区：[1]攀枝花学院土木与建筑工程学院,四川攀枝花617000 [2]"工业固态废弃物土木工程综合开发利用"四川省高校重点实验室,四川攀枝花617000 [3]西华大学建筑与土木工程学院,四川成都610039

出　　处：《四川建筑科学研究》2015年第2期133-135,140,共4页Sichuan Building Science

基　　金：四川省高校重点实验室资助项目(SC_FQWLY201301)

摘　　要：攀西地区特有的昔格达土天然强度较高,但遇水易膨胀、崩解、软化。石灰加竹筋改良后的昔格达土强度大幅提高。但饱和度的不同将严重影响其强度,通过对17个昔格达加筋三七灰土试样养护28天后,按天然饱和、浸水3小时、浸水6小时、浸水9小时、真空抽气饱和进行室内三轴试验,研究石灰加竹筋改良昔格达土的抗剪强度,发现随着饱和度的增大,粘聚力降低明显,内摩擦角逐渐减小。Panxi Xigeda has unique natural soil strength, but it＇s easy expansion, disintegration and softening with water. Lime with bamboo fiber, the strength of improved Xigeda soil will be increased substantially. But different saturation will seriously affect its strength,by 17 pieces of Xigeda reinforced thirty-seven dust samples cured for 28 days, according to a natural saturation, three hours soaking, six hours soaking, nine hours soaking, vacuum pumping saturation for laboratory triaxial tests, research lime with bamboo fiber Xigeda improved shear strength and found that with the saturation increasing, cohesion will be significantly lower and internal friction angle is decreased.

关 键 词：昔格达三七灰土 加筋 饱和度 抗剪强度 

分 类 号：TU41[建筑科学—岩土工程]