基于尖点突变理论的单桩竖向承载力分析  

Analysis of Vertical Bearing Capacity of Single Pile Based on Catastrophe Theory

作　　者：崔树琴[1] 张会芝[2] 殷和平[1] 

机构地区：[1]铜陵学院土木工程系,安徽铜陵244000 [2]焦作大学土木工程系,河南焦作454003

出　　处：《河南科技大学学报（自然科学版）》2008年第3期74-77,共4页Journal of Henan University of Science And Technology:Natural Science

基　　金：安徽省自然科学基金项目(KJ2007B359ZC);安徽省高等学校青年教师科研基金项目

摘　　要：在桩基工程中,单桩竖向承载力的确定和设计关系是否安全和经济的重要问题,国内外关于单桩竖向极限承载力的确定方法很多,但较为完善、科学和经济的方法较少。本文利用桩受竖向荷载时的荷载与位移的关系曲线,引入尖点突变理论,导出单桩竖向承载力的计算公式,并将导出的单桩竖向承载力的计算公式运用于实际工程中,与实测值相比较得到了较为满意的结论。Vertical bearing capacity of single pile is an important problem whether the design is safe and economical or not in the pile foundation construction.There are many methods to calculate the vertical bearing capacity of single pile.But all these methods aren′t perfect,scientific or economical.The load-displacement curve is made use of in this paper when a pile is borne vertical load,and the curve is applied for cusp catastrophe theory.As a result,the formulation of vertical bearing capacity of single pile is deduced.The dividing line between ductility failure and brittle failure is demarcated.The deduced formulation of vertical bearing capacity of single pile is performed on the practical construction,a satisfied conclusion is got.

关 键 词：稳定性分析 竖向承载力 突变理论 尖点突变 

分 类 号：TU753[建筑科学—建筑技术科学]