摘要
建立了充填粉土泥浆重度成线性增加情况下土工织物充填袋袋体的力学特性方程,并给出它的数值分析方法。利用该方法研究了大尺度土工织物充填袋的受力特性,并通过实际工程验证了该方法的正确性。计算结果表明:充填压应力相同时,大尺度充填袋袋体的周向拉力远大于小尺度袋体。因此,为保证袋体的强度要求,大尺度土工织物充填袋的充填压应力应控制在比较小的范围。在此小充填压应力下,计算得到的大尺度土工充填袋的水平向尺寸远大于竖向尺寸,为扁平状态,与管状的小尺度土工织物充填袋的形状明显不同。
Assuming the unit weight of the filled silty slurry increases linearly, this paper presents the formulation of a geotextile bag and develops a numerical analysis method to study the mechanical behavior of large scale geotextile bags. This method is validated by a case study. It is found that the tension of the large scale bag is much greater than that of a small bag at the same pumping pressure. Hence, the large scale geotextile bag should be kept at low pumping pressures in order to satisfy the strength requirement. At such low pumping pressures, the cross-section of the geotextile bag is flat with horizontal size much longer than vertical size, which is different from the circular tube of a small scale geotexile bag.
出处
《工程力学》
EI
CSCD
北大核心
2009年第1期92-97,共6页
Engineering Mechanics
