Rosenblueth方法在加筋格宾挡墙内部稳定可靠度分析中的应用

Application of rosenblueth method in the reliability analysis of the internal stability of reinforced gabion retaining wall

介绍了Rosenblueth矩估计方法的基本原理及其在加筋格宾挡墙内部稳定性分析中的应用。提出了加筋格宾挡墙内部稳定性可靠度分析方法,基于Rosenblueth方法开发了相应计算程序,研究了填料粘聚力c、内摩擦角φ、网面拉力、地震力、填土重度、车辆荷载以及加筋间距等重要参数对可靠度指标的影响,结合我国第一座高速公路加筋格宾挡土墙（湖南省湘潭至衡阳西线高速公路第十二合同段k124＋300~k124＋89段加筋土工程）运用可靠度理论分析其内部稳定性,得到了该挡墙内部稳定可靠性指标和破坏概率。结果表明：该分析方法简单、科学、合理,体现了Rosenblueth方法在复杂功能函数中进行可靠指标计算的优越性,可以应用于具体工程设计。

The basic principle of Rosenblueth moment estimation method and its application in internal stability analysis of reinforced gabion retaining wall are presented.A reliability analysis method for internal stability analysis of reinforced gabion retaining wall is puts forward and corresponding computer programs based on the Rosenblueth method are developed to research the influences of cohesion c,internal friction angle φ,tension,earthquake force,gravity density,vehicle load on reliability index.In light of the first expressway reinforced gabion retaining wall in China（reinforced earth engineering of Xiangtan to Hengyang express highway section of K124 ＋300～K124 ＋895 in Hunan province）,the internal stability analysis of reinforced gabion retaining wall is analyzed by using the reliability analysis method and the reliability index and failure probability are given with this method.The results show that this method is simple,scientific and reasonable.The results show that the reliability analysis method is scientific and reasonable.For complex equations,the Rosenblueth method has an advantage over others in calculating reliability index.Thus it can be effectively used to guide engineering-oriented designs.