同济大学学报（自然科学版）2009，Vol.37Issue(7)：878-882,5.DOI:10.3969/j.issn.0253-374x.2009.07.006
考虑混凝土性质变化灌注桩深部土压力分析
Analysis of Deep Earth Pressure Around Cast-in-place Pile Considering Concrete Property Variation
摘要
Abstract
The rheologic properties of the deeply buried dark green silty clay in Shanghai area are depicted with the Burgers Model.Considering the concrete property variation in solidification,the deformation characteristics of concrete are analyzed with the elastic creep theories.The genetic integral equation of the pile's radial deformation for the reason of the soil pressure around the pile is established.The analytical expression of the time varying horizontal pile soil interaction force is developed through analyzing the condition of the displacement coordinary at the pile soil interface.The research shows that the horizontal soil pressure around the pile,which is initially caused by the pouring process,tends to increasing gradually in deeply buried soil,with the ultimate value being earth pressure at rest.Since the cast-in-place pile's vertical bearing capacity is directly related with the soil pressure around the pile,the time-effect analysis of the soil pressure around filling pile has great significance to the study of the filled pile's vertical bearing capacity variation mechanism.关键词
桩周径向土压力/徐变/遗传积分/灌注桩承载力Key words
radial soil pressure around pile/creep/genetic integration/bearing capacity of filling pile分类
建筑与水利引用本文复制引用
赵春风,王学知,赵洪平,刘福天..考虑混凝土性质变化灌注桩深部土压力分析[J].同济大学学报（自然科学版）,2009,37(7):878-882,5.基金项目
上海市重点学科建设基金资助项目(B308) （B308）
