冯玉芹，王英浩，张凤红
(内蒙古科技大学建筑与土木工程学院，包头014010)

[摘要] 通过室内三维模型试验结果，对CFG桩复合地基褥垫层材料及厚度进行研究与分析，探讨了褥垫层厚度和模量对桩土应力比、桩身应力分布、桩侧摩阻分布、沉降变形、承载力的影响规律。分析了CFG桩复合地基褥垫层的作用机理，为CFG桩复合地基的设计施工提供一定的参考数据。
[关键词] CFG桩；复合地基；褥垫层；模量；应力比

Experiment and analysis on CFG pile composite foundation's lining
Feng Yuqin, Wang Yinghao, Zhang Fenghong
(Arclutecture and Civil Engineering School, UST Inner Mongolia, Baotou 014010, China)

Abstract: By indoor three-dimensional model experiment, this text analses the influence of lining's material, modulus and thickness of CFG pile composite foundation on stress ratio,stress distribution, lateral stress of piles, settlement and capacity Its action mechanism is analyzed and can be reference for construction.
Keywords: CFG pile; composite foundation; lining; modulus, stress ratio