摘要
本文以北海市西村港跨海大桥项目为依托,针对超长大直径桩基竖向抗压极限承载力检测,选取自平衡法静载试验方法作为研究对象,探讨该方法在北部湾海域桩基工程应用的可行性。通过对测试系统、荷载箱埋设位置等关键参数选取,以及加载过程中荷载与向上、向下位移对应关系,绘制荷载-位移(Q-s)曲线、位移-时间对数(s-lgt)曲线,并进行曲线特征分析。结果表明,本工程3根试桩单桩竖向抗压承载力特征值均满足设计要求。研究成果可为北部湾海域同类工程施工提供一定借鉴。
This article focuses on the detection method of the ultimate vertical compressive bearing capacity of super long and large-diameter pile foundations,using the Xicun Port Cross-Sea Bridge project in Beihai City as a reference.The study selects the equilibrium method static load test as the research object and explores the feasibility of applying this method in pile foundation engineering in the Beibu Gulf area.By selecting key parameters such as the testing system and the position of the load box installation,as well as analyzing the corresponding relationship between the load and the upward and downward displacement during the loading process,the load-displacement(Q-s)curve and displacement-time logarithmic(s-lgt)curve are plotted,and the curve characteristics are analyzed.The results show that the characteristic values of the vertical compressive bearing capacity of the three test piles in this project all meet the design requirements.These research findings provide valuable experience for the construction of similar projects in the Beibu Gulf area.
作者
陈强
CHEN Qiang(China Railway 20th Bureau Group No.3 Engineering Co.Ltd.,Chongqing 400065,China)
出处
《铁道建筑技术》
2024年第2期89-93,共5页
Railway Construction Technology
基金
广西科技计划项目(桂科AB23026124)。
关键词
海洋区域
桩基检测
静载试验
自平衡法
桩基承载力
marine area
pile foundation detection
static load test
self-balanced method
bearing capacity of pile foundation
