【摘要】 在对广东某高速公路桥路连接段软土路基采用真空联合堆载预压法进行处治的过程中,该路基发生了整体失稳滑移。为了对路基滑移的原因进行分析,结合对路基滑移后的现场勘察,并根据工程设计、监测等数据资料,对滑体进行了稳定性分析计算,得出了路基处于极限稳定状态时所对应的填土高度为4 m。并对在勘察、设计、监测及施工时需要注意的几个方面的问题进行探讨,为真空联合堆载预压处理软基稳定性控制积累了一定的经验。更多还原

【Abstract】 Vacuum-surcharge preloading was adopted to deal with the soft foundation of a bridge and road connection section of a highway in Guangdong Province,during which an overall instability and slippage of the foundation occurred. In order to analyze the cause of subgrade slippage,based on engineering design,observation and investigation after glide,this paper made an analysis and calculation of the stability of land-slide body,it is concluded that the filling height of the embankment in the limit state is 4 m. The problems which need to be paid attention in the process of investigation,design,monitoring and construction were also discussed,which accumulate certain experience for stability control of applying vacuum-surcharge preloading to deal with soft foundation.更多还原