加筋风砂土抗拔试验研究(Ⅰ)——基本性质和扩展基础抗拔模型试验  

UPLIFT TEST STUDY ON REINFORCED AEOLIAN SAND (I) ——PROPERTIES AND UPLIFT MODEL TESTS ON SPREAD FOUNDATION

作　　者：刘文白[1] 周健[1] 苏跃宏[2] 刘霖[2] 

机构地区：[1]同济大学地下建筑与工程系 [2]内蒙古工业大学建筑工程学院,呼和浩特010062

出　　处：《岩石力学与工程学报》2003年第7期1161-1168,共8页Chinese Journal of Rock Mechanics and Engineering

基　　金：国家自然科学基金(59968001);上海市重点学科基金

摘　　要：在典型沙漠地区进行了调研和现场采取土样,对风砂土样的基本性质进行了试验研究,研究了土工格栅与风砂土的摩擦特性,提出了土工格栅改良加固沙漠地区风砂土力学性能的方法。通过室内模型试验,研究了在上拔荷载作用下加筋风砂土地基扩展基础的力学性能,包括应力、位移、变形、破坏机理和承载能力的研究。In Hobq sand land and Muus sand land of Ordos plateau and Tengger sand land and Ulanbuh sand land of Alxa plateau, the information of the aeolian sand is investigated in field. The physical and mechanical properties of specimens are tested and studied of undisturbed soil and disturbed soil. The mineral chemical composition is analyzed. According to the property of geosynthetics, the friction properties of aeolian sand and geogrid are studied, and the method for enhancing the mechanical properties of aeolian sand is put forward. Uplift properties of spread foundation of reinforced aeolian sand is studied including stress, displacement, deformation, failure mechanism and bearing capability.

关 键 词：土力学 加筋风砂土 上拔荷载 模型试验 力学性能 土工格栅 变形 

分 类 号：TU43[建筑科学—岩土工程] TU472[建筑科学—土工工程]