摘要
桩端刺入量与桩身压缩量之和等于桩端以上桩间土的压缩量,这是桩与土共同发挥作用的基本条件。从这个基本条件出发,提出了一种考虑桩-土共同作用的简化分析方法。该方法可以求解任意荷载水平下桩间土的荷载分担量,进而可以方便的求解出用桩量,同时将基础沉降分为桩间土变形量及桩端下卧土层的整体压缩量两部分进行分析,可以方便的预测基础沉降量,最后根据建筑物的允许变形来确定桩的设计荷载值。工程实例分析表明该方法是可行的。
When soil deformation between the cap and the pile toe is equal to the penetration of pile toe and the compressive deformation of pile stem, pile-soil interaction occurs. Based on this postulate, a new simplified analytical method for pile-soil interaction is proposed. According to this method, the loading which is shared by the soil between the cap and the piles can be determined at an arbitrary loading, and the quantity of piles can be conveniently determined. Meanwhile, the foundation settlement is produced by the soil deformation between the cap and the pile toe and by the compression of soil under the pile toe, and the foundation settlement can be well calculated relatively. At last, the design load of single pile can be determined by the allowed settlement of building. An example shows that the proposed method is satisfactory.
出处
《岩土工程技术》
2008年第4期169-172,193,共5页
Geotechnical Engineering Technique
关键词
桩-土共同作用
刺入量
桩身压缩
沉降
pile-soil interaction
penetration
compressive deformation of pile stem
settlement
