动力排水固结法软基加固效果数值分析  

Numerical Simulation on Reinforcement Effect of Soft Soil Foundation Under Dynamic Drainage Consolidation

作　　者：薛茹[1] 杨桂华[2] 

机构地区：[1]郑州航空工业管理学院土建学院,河南郑州450015 [2]北华航天工业学院建筑工程系,河北廊坊065000

出　　处：《施工技术》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

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.

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 

分 类 号：TU753.1[建筑科学—建筑技术科学]