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介绍了Rosenblueth矩估计方法的基本原理及其在加筋格宾挡墙外部稳定性分析中的应用,提出了加筋格宾挡墙外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、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外部稳定性,得到了该挡墙外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.图11,表2,参11.
The basic principle of Rosenblueth moment estimation method and its application in the external stability analysis of reinforced Grabinger retaining wall are introduced. The reliability analysis method of external stability of reinforced Grabinger retaining wall is proposed. Based on Rosenblueth method, the corresponding calculation program , The effect of important parameters such as filler cohesion c, internal friction angle φ, seismic force, soil filling weight, vehicle load and reinforcement spacing on the reliability index is studied. Combined with the first Gubei retaining grid The external stability of the wall was analyzed by using the reliability theory and the external stability and reliability index of the retaining wall was obtained. The results show that the method is simple, scientific and reasonable, which shows the superiority of Rosenblueth method in the calculation of reliable indexes in complex function functions and can be applied to specific engineering design.