水平塑料排水带固结流态吹填土可行性研究  

Research on the Feasibility of Consolidating Flowed Dredger Fill by Horizontal Plastic Drainage Strip Method

作　　者：罗玉龙[1] 彭华[1] 何金平[2] 

机构地区：[1]武汉大学土木建筑工程学院,武汉430072 [2]武汉大学水利水电学院,武汉430072

出　　处：《武汉理工大学学报》2008年第6期74-78,共5页Journal of Wuhan University of Technology

摘　　要：提出水平塑料排水带分层固结法加速流态吹填土的固结。基于Biot固结有限元理论,分析塑料排水带间距、吹填土和围堰土的渗透性对固结效果的影响。研究表明,吹填土的渗透性是影响沉降、孔隙水压力消散的主要因素,塑料排水带的间距和围堰土的渗透性为次要因素。工程实践表明,该方法固结时间短,施工方便,投资少,是一种有效处理流态吹填土固结问题的新方法。A new consolidation method called layered horizontal plastic drainage strip method was proposed to accelerate the consolidation of flowed dredger fill.Analyses about the influences of space between plastic drainage strips,permeability of dredger fill and cofferdam on consolidation effect were carried out based on the plane strain Biot consolidation FEM theories.The results indicated that the permeability of dredger fill affects the settlement and pore pressure dissipation intensively.It was the most important factors affecting the consolidation effect.The space between plastic drainage strips and the permeability of cofferdam were the secondary factors.The real project suggested that this method had a lot of advantages,such as shortening consolidation time evidently,construction convenience,low cost and so on;it was a new effective method that can solve the consolidation problem with flowed dredger fill.

关 键 词：软土工程 水力吹填 水平塑料排水带分层固结法 BIOT固结 

分 类 号：TU432[建筑科学—岩土工程]