| 大直径摩擦桩堆载法静压试验在大浏高速公路的应用研究 |
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| 引用本文： | 唐小富,王焱,赵少杰.大直径摩擦桩堆载法静压试验在大浏高速公路的应用研究[J].中南公路工程,2012(3):103-105,115. |
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| 作者姓名： | 唐小富 王焱 赵少杰 |
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| 作者单位： | [1]湖南省大浏高速公路建设开发有限公司,湖南长沙410300 [2]湖南省交通规划勘察设计院,湖南长沙410008 |
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| 摘 要： | 通过对大围山至浏阳高速公路早田分离式立交桥摩擦基桩加固处理前后采用堆载法静压试验检测其承载力并在上部结构施工过程中采用二等水准测量对其工后沉降进行观测。经试验对比分析和研究,在粉质粘土和全风化煤矸石不良地质条件下,基桩采用压浆处理加固后其承载力得到了有效提高,堆载静压法在大直径摩擦桩单桩承载力检测方面具有简便实用优越性。
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| 关 键 词： | 桩基加固 大直径摩擦桩 基桩竖向承载力 |
An Application Research on the Experiment of Big Diameter Friction Pile Stack Load Method Under Static Pressure along the Daliu highway |
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| TANG Xiaofu,WANG Yan,ZHAO Shaojie.An Application Research on the Experiment of Big Diameter Friction Pile Stack Load Method Under Static Pressure along the Daliu highway[J].Central South Highway Engineering,2012(3):103-105,115. |
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| Authors: | TANG Xiaofu WANG Yan ZHAO Shaojie |
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| Institution: | 1.Hunan Daliu Expressway Construction Development Co.Ltd,Changsha,Hunan 410300,China;2.Hunan Provincial Communications Planning,Survey ＆ Design Institute;Changsha,Hunan 410008,China) |
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| Abstract: | Observation has been conducted before and after the consolidation of the Zaotian disconnect-type overpass friction foundation piles from the Dawei Mountain and Liuyang high-way by using the stack load method to test its bearing capacity and adopting the second-order benchmark to deposit it after construction during the construction process of the upper structure.A contrastive analysis and research shows that under the undesirable geological conditions of silty clay and completely air-slake coal refuses,the bearing capacity of the foundation piles was strengthened through the consolidation process of mud jacking and the stack load method is simple,convenient and practical in the aspect of testing the bearing capacity of the single large-diameter friction pile. |
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| Keywords: | Pile foundation reinforcement Big Diameter Friction Pile Second Leveling Surveying settlement observation vertical bearing capacity of pile |
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