软土堤基袋装砂海堤固结沉降影响因素研究  

Study on Influence Factors of Consolidation Sand Filled Geotextile Container Coastal Dike on Soft Soil Foundation

作　　者：陈华鸿[1] CHEN Hua-hong(Tianjin Municipal Water-conservancy Survey and Design Institute,Tianjing 300204,China)

机构地区：[1]天津市水利勘测设计院,天津300204

出　　处：《海河水利》2018年第5期51-53,56,共4页Haihe Water Resources

摘　　要：随着土工合成材料的发展,越来越多的充砂袋已被用于海堤工程中。基于数值模拟,对软土堤基上袋装砂海堤的固结沉降特性进行了研究。研究结果表明,浅表淤泥层的压缩量对总沉降量的影响很大;设置并增大排水板长度能够提高海堤的稳定性,减小水平位移,也能在一定程度上减少工后沉降量;在总施工时间保持不变前提下,初期施工速度的加快导致了较大的沉降和水平位移,其中对水平位移的影响比较明显。With the development of geosynthetics,more and more soil filled geotextile containers have been used in coast-al engineering.Based on numerical simulation,this paper studies出e consolidation紐d setdement characteristics of sand filled geotextile container coastal dike on soft soil foundation.The results show that the total settlement was greatly influenced by the compression of the first silt layer.Lower distance between the drainage plates can improve the stability of the dike,reduce the horizontal displacement,and can also reduce the settlement to a certain extent.Under the constant con-struction time,the acceleration of initial construction speed resulted in large settlement and horizontal displacement,among which the effect on horizontal displacement was obvious.

关 键 词：袋装砂海堤 数值模拟 固结沉降 排水板 

分 类 号：TV871.4[水利工程—水利水电工程]