摘要
通过对水下真空预压模型试验结果的分析,提出了水下真空预压的加固机理,为该工法的实施奠定了理论基础。水下真空预压的预压荷载等于预压前的孔隙水压力和预压后(完全固结)的孔隙水压力之差,当膜下砂垫层中的孔隙水压力小于0时,膜上水可全部作为预压荷载起作用。
Based on the analysis of the results of model test, the mechanism of consolidation of soil improved with the underwater vacuum preloading method was proposed, and it provided a theoretical basis for the implementation of the method. The preloading load imposed by underwater vacuum was equal to the difference between the pore water pressure before the implementation of the underwater vacuum preloading method and the pore water pressure after the implementation of the method （when the soil was fully consolidated）. When the pore water pressure in the sand cushion beneath the sealing membrane was negative, all the water retained on the sealing membrane might act as the preloading loads.
出处
《岩土工程学报》
EI
CAS
CSCD
北大核心
2007年第5期644-649,共6页
Chinese Journal of Geotechnical Engineering
关键词
水下真空预压
加固机理
模型试验
underwater vacuum preloading
mechanism of improvement
model test
