天津市浅部典型土层水泥土力学性能试验研究

Experimental Study on Mechanical Behavior of Cemented Soil of Shallow Soil Strata in Tianjin

近年来,天津市正在进行大规模地铁建设,针对天津市的20m深度内的典型土层,取得大量土样,进行了不同水灰比、不同龄期下水泥土的立方体强度、轴心抗压强度和变形模量试验,研究了当地地质条件下高水灰比水泥土材料立方体强度、轴心抗压强度和变形模量随时间和水灰比的变化规律,以期为天津市SMW工法的设计与施工提供依据。

The Tianjin metro project is under construction in recent years. A lot of soil samples have been obtained within 20 meters deep under ground surface for making cemented soil samples. Experiments were carried out to obtain the cubic strength, prismatic strength and modulus of deformation of cemented soil with different water-cement ratio and curing time. The effect of water-cement ratio and curing time on these mechanical characteristics is analyzed which can provide reference for design and constructions of SMW method in Tianjin.