土工织物充灌袋的设计计算方法研究  

Design and calculation methods of geotextile tubes filled with soil slurry

作　　者：闫玥[1] 闫澍旺[1] 邱长林[1] 楚剑[2] 

机构地区：[1]天津大学建工学院,天津300072 [2]新加坡南洋理工大学

出　　处：《岩土力学》2010年第1期327-330,共4页Rock and Soil Mechanics

基　　金：天津市科技创新专项基金项目(No.07FDZDSF02100)

摘　　要：用土工织物充灌袋堆积成围埝已经在围海造陆中得到了广泛应用。土工编织袋通常用砂、粉土或其他渗透性较大的土搅拌成泥浆来充填。在整个充填过程中,采用适当的泵送压力、控制适当的充填高度以保证土工编织袋所受到张力小于编织袋材料的拉伸强度是非常重要的。对于大尺度的冲灌袋,在冲灌施工期间呈扁平状,即中间为平面、两侧为曲面。国外已有的计算方法只适用于顶部形状为曲面的冲灌袋的受力分析,但对扁平的充灌袋的受力计算则不适用。本文通过对现有的设计方法的扩展和改进,编制了新的设计计算程序,用以计算扁平充灌袋的形状、尺寸、泵送压力、泥浆重度和拉应力的关系。这些成果可以帮助围埝设计者选择合理的充灌袋材料、几何形状和尺寸。Using geotextile tubes to construct dikes for land reclamation has been a widely used technique. The tubes are usually filled with slurry of soils, such as sand, silt or clay. The tensile force developed in the geotextile during filling the tube is the dominant factor to construct a safe dike. The existing design methods are good for designing sausage shaped tubes but can not be directly applied to designing flat tubes, which are commonly used in dike construction. This paper presents a procedure that can determine the relationship among the tube size, the pumping pressure, the unit weight of the slurry and the tensile force developed in the geotextile during filing the tube. In the calculation model, the anisotropy of the filled slurry is put in consideration. The procedure has been programmed, which can help the designer to select material and determine the geometry and dimensions for the geotextile tube.

关 键 词：土工织物 充灌袋 围埝 张拉力 

分 类 号：TU457[建筑科学—岩土工程]