钢管模袋混凝土桩竖向承载性能试验研究
Research on Vertical Bearing Performance of Steel Pipe Bag Concrete Piles for the Baiyun Avenue Project in Tongan District
苏史周1
作者信息
- 1. 厦门市建设工程质量安全管理协会 福建厦门 361004
- 折叠
摘要
为揭示钢管膜袋桩在杂填土、淤泥质土、粉质黏土等软弱地层中应用的效果和其竖向承载性能影响因素和规律,本文依托同安区白云大道工程西洋溪中桥临边支护工程,通过在现场抽取4根钢管模袋混凝土桩作为试验桩,桩身埋设应变片,实测不同荷载下的沉降值,建立数值模型得到Q-S曲线、桩身轴力、桩侧摩阻力,数字模型结果与实测结果进行对比,找出提高钢管模袋混凝土桩竖向承载性能的影响规律因素和规律,给类似工程采用钢管膜袋桩支护提供参考.
Abstract
In order to reveal the application effect of steel tube membrane bag piles in soft soil layers such as miscellaneous fill,silty soil,and silty clay,as well as the influencing factors and laws of their vertical bearing performance,this paper relies on the edge support project of Xiyangxi Middle Bridge on Baiyun Avenue in Tong'an District.Four steel tube membrane bag concrete piles were selected as test piles on site,and strain gauges were embedded in the pile body to measure the settlement values under different loads.A numerical model was es-tablished to obtain the Q-S curve,pile axial force,and pile side friction resistance.The numerical model results were compared with the measured results to identify the influencing factors and laws that improve the vertical bearing performance of steel tube membrane bag con-crete piles,providing reference for similar projects to adopt steel tube membrane bag pile support.
关键词
软弱地层/钢管模袋混凝土桩/承载性能/试验研究Key words
Weak strata/Steel pipe bag concrete piles/Numerical modeling analysis/Bearing performance/Laws引用本文复制引用
出版年
2024
NETL
NSTL
万方数据