加筋风砂土扩展基础的抗拔试验与位移控制计算

加筋风砂土扩展基础的抗拔试验与位移控制计算 English Version

上海海运学院交通运输学院；同济大学地下系；内蒙古工业大学建筑工程学院；内蒙古工业大学建筑工程学院上海　200135同济大学地下系上海　200092；上海　200092；内蒙古呼和浩特　010062；内蒙古呼和浩特　010062；

基金项目: 国家自然科学基金资助项目(59968001);;上海市重点学科资助项目;;上海市教育委员会科学技术资助项目(03IK03)

1.Department of Traffic Transportation Shanghai Maritime University Shanghai 200135 China 2. Department of Geotechnical Engineering Tongji University Shanghai 200092 China 3.Department of Civil Engineering Inner Mongolia Politechnical University Huhhot 010062 China

摘要: 承受上拔荷载的扩展基础,可以用上拔位移或上拔荷载作为设计控制条件。在典型沙漠地区进行调研和现场采取土样,进行土工格栅与风砂土的摩擦特性试验,通过室内模型试验研究了上拔荷载作用下土工格栅加筋风砂土地基扩展基础的力学性能,包括荷载、位移、变形、破坏机理和承载能力的研究,提出了有效的土工格栅加筋形式:平铺一层和二层土工格栅。在上述研究基础上,对上拔位移机理进行了分析研究,提出了上拔位移计算模型和上拔位移控制的分析计算方法。
- 加筋风砂土 /
- 扩展基础 /
- 抗拔试验 /
- 上拔位移
Abstract: The design control conditions are uplift displacement or uplift load to spread foundation of bearing uplift load. After testing uplift bearing capacity of aeolian sand of spread foundation on 15 kinds geogrid reinforced conditions, bearing uplift load capacity, uplift displacement, stress, failure surface are studied on geogrid reinforced sand land of spread foundation. It is raised on effective reinforce ways of building geogrids, one and two layer geogrids. According to aforesaid work, uplift displacement mechanism is in research, displacement model and calculation means of uplift displacement control design is advanced.
- geogrid reinforce aeolian sand /
- spread foundation /
- uplift test /
- uplift displacement