真空预压加固流泥效果分析  

Effect Analysis on Strengthening Mud Flow by Vacuum Preloading

作　　者：冯军[1] 刘爱民[1] 高志义[1] 

机构地区：[1]中交天津港湾工程研究院有限公司港口岩土工程交通行业重点实验室天津市港口岩土工程技术重点实验室,天津300222

出　　处：《中国港湾建设》2011年第2期35-38,共4页China Harbour Engineering

摘　　要：近来某些围海造陆软基加固工程中,地基表层流泥经过真空预压加固后,强度很低,部分土体仍处于流塑状态,没有达到预期的加固效果。通过室内模型试验,结合青岛某工程实例,分析真空预压加固流泥效果较差的原因,表明这些软基应变固结度达到85%后,承载力仍较低,其原因是这些饱和软土中黏粒含量很高,黏粒对孔隙水的吸附作用较大。采用排水板间距大于60 cm的真空预压方法处理效果较差。Recently,in some soft soil reinforcement engineering,the strengthen of flow mud on the ground soil surface was low through vacuum preloading,even part of the soil was still in the flow state and did not achieve the desired reinforcement effect.This paper analyzes reason by a vacuum preloading model experiment and projects of Qingdao.The effect of flow mud analysis showed the strain consolidation degree reached 85 %,the strengthen was still low for high clay content and clay on larger adsorption of pore water,so reinforcement effect was poor by vacuum preloading when plastic drain spacing was greater than 60 cm.

关 键 词：真空预压 流泥 模型试验 工程实例 

分 类 号：TU472.33[建筑科学—结构工程]