素混凝土桩在委内瑞拉混合土地层中的应用
摘要:委内瑞拉首都加拉加斯四面环山的地形地貌,为混合土的形成提供了物质来源。位于委内瑞拉的某场地,地层以混合土为主且成分复杂,由砂类混合土、碎石类混合土、粉土和粉质粘土构成,标准贯入试验锤击数较离散,土层分布均匀性差且承载力不能满足设计要求。在场地进行了天然地基静载试验和素混凝土桩复合地基静载试验,试验表明,经素混凝土桩复合地基加固处理后,地基承载力有较大幅度地提高,同时得出了适宜的复合地基施工工艺,使得素混凝土桩在该类混合土地层中得到成功应用。
Abstract:The topography and geomorphology of which surrounded by mountains is the material sources of mixed soils in Caracas,Venezuela.The project in this paper is located in Caracas with the mixed soils that contain sand,gravel,silt and silty clay.And the mixed soils with lower bearing capacity is unhomogeneous which represented by discrete SPT blow counts.Through the PLTs on nature ground and pure-concrete-pile composite ground,this paper indicates that the beating capacity of the mixed soils is more increased by ground improvement.And feasible construction technology of pure-concrete-pile is also tested.The application of pure-concrete-pile composite ground in Caracas mixed soil is successful and perfect.
中文标题:
素混凝土桩在委内瑞拉混合土地层中的应用
Application of Pure-Concrete-Pile in Mixed Soils of Venezuela
作者:
吴学林,唐国艺,戴彦雄
Wu Xuelin,Tang Guoyi,Dai Yanxiong
作者简介:吴学林,1982年生,男,汉族,工程师,从事岩土工程勘察等方面工作。E-mail:wu.xue.lin@163.com
通讯地址:
机械工业勘察设计研究院, 陕西西安 710043
ChinaJKInstituteofEngineeringInvestigationandDesign,Xi'an710043,Shaanxi,China
中图分类号:TU472
doi:10.3969/j.issn.1007-2993.2014.01.001
出版物:岩土工程技术
收稿日期:2013-10-08
网络出版日期:2021-07-19
关键词:混合土,承载力,素混凝土桩,复合地基,载荷试验
Key words:mixed soils,bearing capacity,pure-concrete-pile,composite ground,PLT
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