CAJ | 학술논문

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.
용토공직물충관대퇴적성위념이경재위해조륙중득도료엄범응용.토공편직대통상용사、분토혹기타삼투성교대적토교반성니장래충전.재정개충전과정중,채용괄당적빙송압력、공제괄당적충전고도이보증토공편직대소수도장력소우편직대재료적랍신강도시비상중요적.대우대척도적충관대,재충관시공기간정편평상,즉중간위평면、량측위곡면.국외이유적계산방법지괄용우정부형상위곡면적충관대적수력분석,단대편평적충관대적수력계산칙불괄용.본문통과대현유적설계방법적확전화개진,편제료신적설계계산정서,용이계산편평충관대적형상、척촌、빙송압력、니장중도화랍응력적관계.저사성과가이방조위념설계자선택합리적충관대재료、궤하형상화척촌.
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.