摘要
为了解释广泛应用于软土地基加固的真空预压技术的加固机理中关于影响深度这一困惑工程界多年的疑难问题,研制了一套真空预压机理的演示模型装置,通过该装置可以直观演示真空预压过程中孔隙水与地基土骨架应力的相互转换和传递过程,可以解释和解决真空预压的影响深度问题,实验结果和相关分析可以有力地证明真空预压的有效加固深度大于10m.
The vacuum preloading method has been widely applied in reinforcing soft groundsill. But up to now, the mechanism of this method has not been made clear. Many researchers have tried very hard to give (reasonable) explanations, but few of them are persuadable enough to be accepted by the engineers. For example, the maximum depth at which the vacuum can improve has been still a question. Therefore, a set of device for demonstrating the mechanism of vacuum preloading is developed. This device can simulate the transformation from the applied vacuum load to the soil skeleton force via the pore water pressure. Since the procedure is (visible) to the naked eye, the mechanism of the vacuum preloading can be easily understood. By inferring from the demonstrating test results, it can be clearly shown that the vacuum preloading method can improve the soft soil more than 10 m below the ground surface.
出处
《天津大学学报（自然科学与工程技术版）》
EI
CAS
CSCD
北大核心
2005年第7期611-614,共4页
Journal of Tianjin University：Science and Technology
关键词
真空预压
固结模型
应力传递
加固深度
vacuum preloading
consolidation model
stress transfer
reinforcing depth
