摘要
动力排水固结法是一个瞬态动力响应问题,其复杂性决定了地基土在夯击过程中的特性难以用常规的解析方法进行推证。采用FLAC3D软件对动力排水固结过程作数值模拟,并对动力排水固结法的有效加固深度及加固范围作分析。研究表明,动力排水固结法加固的主要范围是夯锤下方的椭球体区域,表现为竖向压缩,侧向挤压,有效加固深度和加固范围可由数值模拟较准确预测。
Dynamic drainage consolidation method is an instantaneous dynamic response problem. Because this method is complex,it is difficult to describe the consolidation characteristics of soft soil by means of conventional analytical method. The process of dynamic drainage consolidation method is numerically simulated with FLAC3D,and the effective reinforced depth and reinforcement area are analyzed. The results show that main reinforcement area is the ellipsoid under the hammer,and the soil is compressed at vertical direction and extruded at lateral direction. Moreover,the numerical simulation can accurately forecast the effective reinforced depth and reinforcement area.
出处
《施工技术》
CAS
北大核心
2010年第5期58-60,共3页
Construction Technology
基金
2010年河南省科技攻关项目
关键词
地基处理
软土地基
动力排水固结法
数值模拟
有效加固深度
加固范围
foundation treatment
soft soil foundation
dynamic drainage consolidation method
numerical simulation
effective reinforced depth
reinforcement area
