摘要
堆载预压法的机理是采用提高附加应力强制排出孔隙水,减小孔隙比,提高软弱地基承载力;真空预压法的机理是采用降低孔隙水压力,吸出孔隙水,减小孔隙比,使软弱地基承载力得到提高;而真空联合堆载预压法结合上述两者的优点,使软弱地基承载力和弹性模量在短时间内得到提高。实践证明,该方法是广泛适用于道路软基处理的。
Mechanism of load preloading is using a method by increasing additional stress to extrude pore water and reduce void ratio in order to improve bearing capacity of soft foundtion.Mechanism of vacuum preloading is using a method by reducing the pressure of pore water,extract the water to reduce void ratio,in order to improve bearing capacity of soft foundation.Vacuum-mound preloading combined the feature of above mentioned,improving the bearing capacity and elastic modulus of soft soil in a shot time.Practice has proved that the method has been widely used in road soft soil foundation treatment.
出处
《资源环境与工程》
2010年第3期313-316,共4页
Resources Environment & Engineering
关键词
真空联合堆载预压
软弱地基
孔隙比
固结度
soft foundation
void ratio
vacuum-surcharge preloading
degree of consolidation
