自平衡法抗拔与传统法抗拔试验的对比分析  

The Contrast Experiment Study of the Pile Self-balancing Static Load Test and the Traditional Pulling-resistant Pile Method

作　　者：王晓伟 李祥新 许宇星 巫卓伦 WANG Xiao-wei;LI Xiang-xin;XU Yu-xing;WU Zhuo-lun(Guangzhou Testing Center of Construction Quality and Safety Co.,Ltd.,Guangzhou 510440)

机构地区：[1]广州建设工程质量安全检测中心有限公司,广州510440

出　　处：《广州建筑》2024年第7期109-115,共7页GUANGZHOU ARCHITECTURE

摘　　要：本文结合工程实际,以分别采用自平衡法和传统法测试的抗拔桩为研究对象,通过沿桩身布置的钢筋计测试不同荷载下对应的桩身应力,揭示自平衡法和传统法抗拔试验中桩体内力分布存在的异同。通过分析得出:自平衡法抗拔测试中桩身轴力沿着深度由下向上逐渐减少,传统法抗拔则是由上向下逐渐减小;自平衡法抗拔测试中侧摩阻力由下往上发挥,传统法抗拔测试中则是由上往下发挥。This paper took engineering projects with reinforcement meter to conduct different pile internal stress,which is revealed the difference of the internal force between the pile self-balancing static load test and the traditional pulling-resistant pile method.It is analyzed that the pile axial force is decreasing from the bottom to the top in the self-balancing static load test.On the contrary,the pile axial force is decreasing from the top to the bottom in the traditional pulling-resistant pile method.Last but not the least,the result shows that the pile side friction transfers from the bottom to the top in the self-balancing static load test whereas it transfers from the top to the bottom in the traditional pulling-resistant pile method.

关 键 词：抗拔桩 自平衡法 传统法 桩身轴力 桩侧摩阻力 

分 类 号：TU413[建筑科学—岩土工程]