摘要
通过对重塑萧山粘土进行真空固结室内模拟实验 ,验证了真空固结预压的效果是膜内外大气压差与土样内外大气压差两者效应的组合 ,并提出了估计真空预压固结系数的简化公式 ;通过对土体单元在真空和堆载预压下的弹性受力分析 ,指出在目前现场真空预压施工的工后沉降要大于等效荷载下堆载预压的工后沉降。
Through laboratory simulation test of vacuum consolidation of Xiaoshan clay remodeled, it is proved that the vacuum consolidation preloading effect is the combination effect of pressure differences inside and outside of membrane and soil sample. A simplified formula for estimating the vacuum preloading consolidation coefficient is developed. By elastic loading analysis of soil sample under conditions of vacuum and heap preloading, it is pointed out that the post-construction settlement of vacuum preloading in the field is bigger than that of heaped preloading with equivalent load.
出处
《中国农村水利水电》
北大核心
2004年第4期58-60,64,共4页
China Rural Water and Hydropower
关键词
真空固结
室内实验
等效荷载
工后沉降
vacuum preloading
laboratory test
post-construction settlement
