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以彭湖高速公路软基填筑过程中的沉降变形为研究对象,阐述了软土沉降监测方案,依据现场监测数据发现填土间隔对地基沉降量有一定的影响,通过太沙基固结理论和以比奥固结理论为基础的数值模拟对此进行了进一步分析。分析结果显示较长的分层填土间隔时间能够减小总沉降量,有效减小路基坡脚产生的水平位移,但会延长地基的固结过程。
Taking the settlement and deformation during the soft foundation filling of Penghu Expressway as the research object, the settlement monitoring program of soft soil is expounded. According to the on-site monitoring data, it is found that the fill interval has a certain influence on the settlement of foundation, This is further analyzed by numerical simulations based on the Biot consolidation theory. The analysis results show that the longer interval of soil filling can reduce the total settlement and effectively reduce the horizontal displacement of subgrade footing, but it will prolong the foundation consolidation process.