超软土地基浅层真空预压加固新技术现场试验及应用

对于新近吹填淤泥形成的超软土地基,常规浅层软基处理后表层形成的硬壳层承载力有限,还需吹填80~100 cm的粉砂作为满足后续机械插板施工的持力层。依托天津南港工业区港区航道、港池挖泥结合吹填造陆工程(B03路西侧造陆3区)软基处理工程,通过试验,对比分析3种浅层超软土加固处理新技术方案,并对3种方案进一步优化组合,在满足一定承载力的前提下,达到不吹填或少吹填粉砂的目的。

Field test and application analysis of vacuum preloading method for shallow ultra-soft soil reinforcement

For the ultra-soft soil by newly-filled silt ,the bearing capacity is limited after treated by the conventional method for the shallow soft soil treatment,and needs to fill powder of 80 to 100 cm thick to serve as the bearing course for the follow-up board plugging construction.Based on Tianjin Nangang Industrial Zone waterway and harbor dredging combined with land reclamation project (B03 road on the west side of reclamation area 3) soft foundation treatment project,we compare 3 schemes for the reinforcement of ultra-soft soil by the experiment and further optimize the schemes,and attain the goal of unnecessary sand filling or less filling.