变径桩的原位试验分析及优化设计  

The in-suit testing analysis and optimization design for the diameter changes pile

作　　者：张萍[1] 刘秀丽[1] 

机构地区：[1]河南科技大学土木工程学院,河南洛阳471023

出　　处：《四川建筑科学研究》2015年第2期120-123,共4页Sichuan Building Science

基　　金：国家自然科学基金项目(51208182)

摘　　要：变径桩是桩基技术人员在钻孔灌注桩的基础上研制出来的一种新桩型。本文作者首先根据试桩试验资料对变径桩的荷载传递规律、承载力发挥性状和变形特性进行了全面系统的分析;其次,根据试桩实例采用外罚函数法对变径桩进行优化设计,为该桩型的设计提供理论依据,进一步为该桩型在工程中的应用奠定基础。The diameter changes pile is a new type of pile which is developed by the technical personnel based on the cast-in-place pile. First, the paper analyzed systematically and comprehensively the load-transfer law, the characteristics of bearing capacity and the deformation characteristics of the diameter changes pile based on the testing data; secondly, optimized the diameter changes pile using the exterior penalty function method on the basis of the project cases, the study can provide theoretical basis for the design and lay foundations for the engineering application for the diameter changes pile further.

关 键 词：变径桩 承载力 优化设计 外罚函数法 

分 类 号：TU473[建筑科学—结构工程]