摘要
振沉工艺是一种较为新颖的预制桩施工工艺,对于采用这种工艺施工的桩基的桩-土作用研究相对较少,尤其是钢管桩的桩-土作用。针对这一问题,采用慢速单桩竖向抗压静载试验方法获得了一组振沉压入钢管桩的单桩承载力变化规律。随后,根据可能存在的4种桩土作用模式,采用力学平衡法分别计算了桩的竖向极限承载力,并依据规范建议考虑振沉影响对计算结果进行了修正。通过试验结果与理论计算结果的对比,揭示了振沉工艺下钢管桩的桩-土作用特征,研究成果对振沉桩单桩极限承载力的计算具有一定的指导意义。
Vibro-sinking is a relatively new and innovative precast pile construction technique that has received little attention in research on the pile-soil interaction of pile foundations,particularly for steel pipe piles.To address this issue,this study employed a slow single pile vertical compression static load test to investigate the load-bearing capacity variation of single vibro-sunk steel pipe piles.Based on four possible pile-soil interaction modes,the vertical ultimate bearing capacity of the pile was calculated using the mechanical equilibrium method,with adjustments made according to vibro-sinking influences in accordance with regulatory guidelines.By comparing experimental results with theoretical calculations,this study reveals the pile-soil interaction characteristics of steel pipe piles under vibro-sinking,with implications for the calculation of single pile ultimate bearing capacity in vibro-sinking pile applications.These findings provide valuable insights for geotechnical engineers and other professionals involved in pile foundation design and construction.
作者
刘举
王政
LIU Ju;WANG Zheng
出处
《城市道桥与防洪》
2024年第6期263-266,284,共5页
Urban Roads Bridges & Flood Control
关键词
振沉桩
载荷试验
设计规范
钢管桩
Vibration-sunk pile
Static load testing
design standards
作者简介
刘举(1990-),男,本科,工程师,从事工程项目技术管理工作。
