摘要
本文根据同一场地砂卵石层上一组摩擦桩、一组深层载荷和两组扩底墩的竖向承载力静载试验 ,分析了埋深 6 2 0～ 6 75m的扩底短墩的荷载传递性状。结果表明 ,可用直接试验法和间接试验法确定扩底墩的承载力 ;扩底墩的极限承载力以端阻力为主 ,占 85 %～ 95 %;墩端阻力充分发挥时的墩顶沉降远远大于侧摩阻力已充分发挥的墩顶沉降。
The load transfer behavior of the belled piers (with the depth of 6.2～6\^75m) in sandy cobble layer is studied based on the loading tests (including large diameter belled piers, friction pile and deep loading test at the same site). The results show that the bearing capacity of belled pier can be determined by direct testing method or indirect testing method, that the end resistance is the main part (up to 85%～95%) of ultimate bearing capacity, and that the settlement of pier's top when end resistance is fully developed is greatly larger than that when skin friction is fully developed.
出处
《工程勘察》
CSCD
北大核心
2003年第5期5-7,共3页
Geotechnical Investigation & Surveying
基金
高等学校博士点基金项目 (2 0 0 0 0 2 472 4)资助
上海市重点学科 (岩土工程 )建设项目资助
关键词
砂卵石层
大直径扩底墩
荷载
传递
承载力
试验
test
bearing capacity
large diameter belled pier
sandy cobble layer
