素混凝土桩复合地基承载特性分析  

Analysis of Load-bearing Characteristics of Concrete Pile Composite Foundation

作　　者：胡志[1] 王贤能 胡岱文[1] 代军 

机构地区：[1]重庆大学土木工程学院,重庆400045 [2]深圳市工勘岩土工程有限公司,广东深圳518026

出　　处：《重庆建筑大学学报》2004年第3期46-50,共5页Journal of Chongqing Jianzhu University

基　　金：深圳市龙岗区科学技术局2002年度科技计划项目资助

摘　　要：通过两组试验得到了素混凝土桩复合地基桩土应力分布的一些规律。在试验荷载范围内,桩土应力比随荷载的增加而增大,实测最大荷载下桩土应力比大多在9～13之间,桩的荷载分担比可达0.7以上。试验证明素混凝土桩复合地基具有承载力高、沉降变形小的优点,具有良好的应用前景。Some conclusions were drawn from two groups of in-site tests on concrete pile composite foundations. In the tests, it was found that the pressure under the rigid loading slab is different, in which the pressure under the center of the slab is the less and under the edge of the slab is the biggest. The pile-soil stress ratio is not a constant; it increases with the adding of the load. Most of the pile-soil ratio vary from 9 to 13 in these tests and the load that the piles share can be more than seventy percent of the whole load. It was proved that the bearing capacity of the concrete pile composite foundation is high with a little settlement, so it will be used more and more in the future.

关 键 词：复合地基 素混凝土桩 应力比 荷载分担比 沉降变形 承载力 

分 类 号：TU472[建筑科学—结构工程] TU473.1[建筑科学—土工工程]