中外公路2025，Vol.45Issue(6)：10-16,7.DOI:10.14048/j.issn.1671-2579.2025.06.002
斜直组合型双排锁扣钢管桩支护性能数值模拟分析
Numerical Simulation Analysis on Support Performance of Inclined-Vertical Combined Double-Row Interlocked Steel Pipe Piles
摘要
Abstract
To select appropriate support structures in foundation pit engineering of underground tunnels for the Hong Kong International Airport(HKIA),this paper proposed the use of inclined-vertical combined interlocked steel pipe piles,which are beneficial for support,water isolation,and recovery.Numerical simulations were conducted using finite element software Midas GTS NX to analyze the effect of different combination types and inclination angles on the engineering response of the inner-row piles of inclined-vertical combined double-row interlocked steel pipe piles.The results show that the inclined-vertical combined double-row piles reduce the horizontal displacement at the top of the inner-row piles by approximately 50%and decrease the peak bending moment by around 30%,yielding better engineering performance than traditional vertical double-row piles.When the inclination angle of the inner-row piles is the same,the positive-negative inclined double-row piles outperform other combinations in controlling the horizontal displacement at the top and reducing the peak bending moment and the deflection of the piles.In engineering practice,it is recommended to prioritize positive-negative inclined double-row piles or inward-vertical inclined double-row piles,and to maximize the inclination angle within the allowable limits of construction equipment.This can lower the horizontal displacement at the top,peak bending moment,and deflection of the piles to ensure the stability of foundation pits.关键词
基坑工程/锁扣钢管桩/数值模拟/双排桩/内排桩/桩顶水平位移/弯矩/土压力Key words
foundation pit/interlocked steel pipe pile/numerical simulation/double-row pile/inner-row pile/horizontal displacement of pile top/bending moment/earth pressure分类
交通工程引用本文复制引用
ZHOU Yi,ZHANG Ning,WANG Yanhua,ZHOU Dequan..斜直组合型双排锁扣钢管桩支护性能数值模拟分析[J].中外公路,2025,45(6):10-16,7.基金项目
国家自然科学基金资助项目(编号:52278329) （编号:52278329）
湖南省交通运输厅科技项目(编号:202247) （编号:202247）
