摘要
为研究液压静力压桩机夹桩箱的受力和变形,促进液压静力压桩机夹桩箱的改进,提高压桩质量,简述了抱压式液压静力压桩机的工作原理,利用ANSYS软件,建立了液压静力压桩机夹桩箱的有限元模型,设置了模型中的主要参数,利用有限元系统内嵌的命令流式程序设计语言APDL,编辑了夹桩箱命令流式程序,对夹桩、压桩和加力压桩时的夹桩箱进行了系列化有限元仿真分析,得出了夹桩箱的等效应力云图和最大等效应力及合变形,并对仿真结果进行了分析和研究。仿真结果表明:增大夹桩箱的弹性模量,减小夹桩箱的泊松比,降低压桩力,减小夹桩时的夹桩力,随着压桩力的增大加大夹桩力等均能有效地减小夹桩箱的最大等效应力和最大合变形。
By studying on the stress and displacement distribution of pile clamping box of hydraulic static pile diver, promoting the pile clamping box, and improving quality of pile driving, the working principle of hydraulic static pile diver were introduced briefly. We can set up the main parameters of the model by using ANSYS software to establish finite element model of pile clamping box and program the command stream with APDL standing of ANSYS Parametric Design Language. Then the serialization simulation analysis on pile clamping box in the process of pile driving by adding force and pile clamping box under pile clamping and driving were achieved as well as the cloud diagram of Mises stress and the maximal Mises stress and displacement vector sum of pile clamping box were also elicited. With analyzing and studying, the simulation results show that increasing pile clamping force and augmenting pile driving force can reduce the maximal mises stress and displacement vector sum of pile clamping box effectively in the condition of adding Young＇s modulus of pile clamping box by, reducing becomingly Poisson＇s ratio of pile clamping box, diminishing pile driving force, decreasing pile clamping force under pile clamping.
出处
《湖南工业大学学报》
2009年第2期50-54,共5页
Journal of Hunan University of Technology
基金
"863"国家高新技术研究发展计划基金资助项目(2003AA430200)
关键词
夹桩箱
有限元分析
变形
应力
液压静力压桩机
pile clamping box
finite element analysis
displacement
stress
hydraulic static pile driver
