深厚覆盖层中超长桩的应用

Application of super-long pile in deep overburden

阐述了超长桩的荷载传递机理及影响因素,为深厚覆盖层中超长桩的选择提供了理论依据。同时结合工程实例对深厚覆盖层工程地质条件和物理力学特征进行了分析,为桥梁基础设计提供了设计参数。根据桥梁主墩处深厚覆盖层的设计参数对超长桩的单桩承载力进行了计算,说明了超长桩的摩擦型桩性质。该结果在深厚覆盖层中超长桩的应用及黄河下游深厚覆盖层的工程性质研究方面具有实践意义。

The present study describes the load transfer mechanism and influencing factors of super long pile,which provides a theoretical basis for the selection of super long pile in deep overburden.At the same time,the engineering geological conditions and physical mechanics characteristics of deep overburden are analyzed combined with engineering examples,which provides design parameters for bridge foundation design.According to the design parameters of the deep overburden at the main pier of the bridge,the bearing capacity of the single pile of the super-long pile is calculated,and the properties of the friction pile of the super-long pile are explained.The results of present study have practical significance in the application of super-long pile in deep overburden and the study of engineering properties of deep overburden in the lower Yellow River.