摘要
建立了脱空量变形计算模型,进行了桩基承台下桩间土脱空量的计算,在脱空发生时,对桩承台与承台底地基土再接触后的受力机理和变形特点进行了分析,建立了桩与桩间土共同工作的必要条件。通过理论分析,推导出桩间土参与共同工作分担上部荷载的定量表达式。结果表明,按此理论设计和布桩可取得较好的经济效果。
The paper presents a formula of separate deformation quantity between the low side of pile cap and earth, and calculates the separate deformation quantity between piles-group and earth, and analyzes the mechanic principle and characteristics of deformation when pile cap gets in touch with earth once again. Finally, the paper represents some necessary conditions of cooperative working between pile-group and earth, and infers theoretically quantitative formula of bearing upper loads in cooperation. Better economic results can be acquired if piles are designed and planned according to the theory in the paper.
出处
《华东交通大学学报》
2009年第2期42-46,共5页
Journal of East China Jiaotong University
关键词
脱空量
桩尖刺入量
桩与桩间土共同工作
压缩变形
separate quantity
penetrating quantity of pile foot
cooperative working between pile and soil
deformation
作者简介
宋功河（1951-），男，江西奉新人，副教授。
