Experimental and mechanism study on a novel vacuum preloading method
With rapid development of Tianjin Binhai New Area in China, more and more artificial islands are formed by reclaimed soil with water content normally higher than 80％ and vacuum preloading technology is employed to accelerate the soil consolidation process. In order to explore a cost-saving vaccum preloading technique for investment controlling purpose, the conception of controlled ventilation vacuum preloading was proposed and physical model tests were conducted indoor. Results of settlement, pore pressure dissipation and. degree of vacuum in the testing soil were compared with that from conventional vacuum preloading test, which was performed under the same circumstances. It was shown in the tests that the new vacuum preloading method can reduce the consolidation time remarkably and therefore is economical. The mechanism of controlled ventilation vacuum preloading was also studied and the theory can be used for application and development of the new method. The construction process of controlled ventilation vacuum preloading technique will be studied in the future work.
reclaimed soil vacuum preloading controllable ventilation model test consolidation
Liqiang Sun Shuwang Yan Hongjuan He
School of Civil Engineering,Tianjin University,Tianjin, China Tianjin supporting urban road network construction investment co.,Tianjin, china
国际会议
三峡
英文
2380-2383
2012-05-18（万方平台首次上网日期，不代表论文的发表时间）