摘要
基于桩侧土体和桩端土体的变形与破坏机理不同,以及土力学理论、有关室内和现场试验结果,并为简化起见,分别采用双曲线模型、理想弹塑性模型来描述桩侧土体静阻力和桩端土体静阻力特性。考虑桩身自重及桩周土体阻力作用建立了一维动力打桩波动方程,采用有限差分法进行求解,编制了基于上述土体模型的打桩分析软件ADP,并用该软件对某海洋桩基平台的打桩工程进行了数值分析。结果表明,本文建立的模型更符合实际情况,有助于提高分析精度。
According to the soil mechanics theory and the results of laboratory experiment and field test,the deformation and failure mechanisms for pile side soil and pile toe soil were different.Based on the differences,a hyperbolic model and an ideal elasticplastic model were proposed to describe the behavior of the soils adjacent to the pile shaft and at the pile toe,respectively.On dimensional stress wave equation was established,taking into account of pile weight and soil resistance around pile,and solved by the finite difference method.A program of analysis driving pile(ADP) was developed and applied in a calculation of piling in one offshore platform project.The results show that the soil model proposed was in good accord with practical conditions and the calculation precision was improved.
出处
《水利学报》
EI
CSCD
北大核心
2003年第4期101-107,共7页
Journal of Hydraulic Engineering
关键词
双曲线模型
理想弹塑性
波动方程
hyperbolic model
ideal elastic-plastic model
stress wave equation
