土工基础

›› 2017, Vol. 31 ›› Issue (4): 526-528.

• 工程实录 • 上一篇    下一篇

自平衡法试桩在桥梁基桩承载力测试中的应用

王 莹1，汪家毅2   

  1. （1.内蒙古自治区通辽市交通运输局，内蒙古通辽 028000；2.宜昌市建设工程质量安全监督站，湖北宜昌 443000）
  • 收稿日期:2017-03-27 修回日期:2017-04-13 出版日期:2017-08-20 发布日期:2017-08-22
  • 作者简介:王 莹（1980-），女，工程师，研究方向为公路与桥梁。

Self-Balanced Pile Loading Test Method in A Bridge Project

WANG Ying1, WANG Jiayi2   

  1. (1.Inner Mongolia Autonomous Region Transportation Bureau, Tongliao 028000;
    2.Yichang Construction Engineering Quality and Safety Supervision Station, Yichang 443000)
  • Received:2017-03-27 Revised:2017-04-13 Online:2017-08-20 Published:2017-08-22

摘要： 浙江乐清湾大桥桩基具有承载力高、大直径、桩位处海水中等的特点，对该项目中5根灌注桩采用自平衡法进行桩基检测，结合工程实际，采用简化等效转换法和精确转换法对比分析确定单桩极限承载力。试验结果表明，简化等效转换法满足工程要求，进一步统计分析不同桩侧土的转换系数K的合理取值。该检测方法不受场地条件的限制，而且结果可以满足工程上的需要，为以后施工和设计提供了参考依据。

关键词: 桥梁工程, 自平衡法载荷试验, 荷载~沉降曲线, 转换系数

Abstract: The pile foundation of Leqing Bay Bridge in Zhejiang has the characteristics of high bearing capacity, large diameter and the piles are in the marine environment. The selfbalanced method was used to test the capacity of 5 piles. And the ultimate bearing capacity of the single pile was analyzed by the simplified equivalent conversion method and precise conversion method. The loading test results showed that the simplified equivalent conversion method can meet the engineering requirements. Further analysis is needed in order to obtain the reasonable value of the conversion coefficient K in different soils.

Key words: Bridge Engineering, Self-Balanced Loading Test, Load-Settlement Curve, Conversion Coefficient