充淤模袋筑堤现场试验袋体变形监测及分析

Deformation monitoring and analysis of slurry filled geotextile tubes used for building embankment

堤身变形监测及变形规律的研究,对于充淤模袋筑堤来说极其重要。现场试验设计了自然排水、真空预压排水、掺固化剂三种工法进行施工,通过监测堤身高度及宽度变化,对三种施工方法的优缺点进行了总结。结果显示,袋体高度的变化规律与袋体中淤泥固结排水的规律相一致,并且与所充填的淤泥的性质、掺入固化剂的种类和掺量以及排水的方式密切相关。研究发现,体积减少固结法可用于预测竣工后堤身高度。

Monitoring the embankment deformation and its variation law is very important for the building embankment with the slurry filled geotextile tubes.Three types of construction methods were designed for the building embankment,including natural drainage,vacuum preloading drainage,and adding curing agent.The advantages and disadvantages of the three methods were summarized through the monitoring the variations of tube height and width.Results showed that the variation of tube height is consistent with the consolidation law of the slurry in the tube,and it is also related to the properties of filling slurry,the type and dosage of curing agent,and drainage way.Moreover,the volume reduction consolidation method can be used to predict the height of embankment after its completion.