摘要
运用相关规范及有限元软件,对某软土地基上的临时围堰进行了填筑期的稳定性分析,并进一步对不同边坡安全系数计算方法与土工布加筋作用展开讨论。计算结果表明,土工布显著提高围堰边坡稳定性、且表层土工布贡献最大;不同假设的极限平衡法无筋土坡安全系数接近,而加筋土坡的结果相差较大;对于填筑期稳定性,强度折减法与极限平衡法相近,但前者更符合工程实际。
Related codes and finite element software were used to analyze the stability of temporary cofferdam on soft soil foundation during filling stage and to fur- ther discuss the calculation method of different slope safety factors and geotextile rein- forcement. The calculation results show that the geotextile significantly improves the cofferdam slope stability, and the surface layer of geotextile has the largest contribu- tion. All limit equilibrium methods under different assumptions were compared, their calculation results were close in view of non-reinforced slope safety, while different in view of reinforced soil slope. The results of strength reduction method and limit equi- librium method are similar, but the former is more appropriate for practical engineering.
出处
《工程建设》
2013年第5期8-12,24,共6页
Engineering Construction
关键词
围堰
稳定性
加筋作用
数值模拟
cofferdam
stability
reinforcement
numerical simulation
