重力式挡土墙可靠度设计方法研究

罗一农

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铁道工程学报 ›› 2007, Vol. 24 ›› Issue (8) : 27-29.

路网研究

重力式挡土墙可靠度设计方法研究

罗一农

作者信息 +

Research on the Reliability Design of Gravity Retaining Wall

LUO Yi-nong

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文章历史 +

摘要

研究目的:为《铁路路基支挡结构设计规范》按可靠度方法进行修汀编制提供依据。

研究方法:采用理论研究、试验分析、计算统计以及校核分析相结合的方法。

研究结果:建立了重力式挡上墙基于可靠度理论的设计表达式;计算并统计了按现行规范设计的挡上墙可靠指标;推荐了月标可靠指标建议值、荷载分项系数和抗力分项系数参考值 ;提出了重力式挡土墙可靠度理论的设计原则和计算方法。

研究结论：选取的目标可靠指标能满足工程安全要求;按本课题提出的设计方法设计出的挡墙尺寸，与传统方式的计算结果接近;荷载分项系数的取值与美国规范相近。课题研究所提出的重力式挡墙设计公式、目标可靠指标及分项系数建议值，可作为《铁路路基支挡结构设计规范》修订的参考。

Abstract

Research purposes: To provide the basis of compiling ”Code for design of retaining structures of railway subgrade".

Research methods: Adopting the methods of combining study of theory with analysis through testing, statistation by calculating and checking.

Research results: This paper set up an expression for designing the gravity retaining wall based on Reliability Theory, calculated and counted reliability index for designing the gravity retaining wall according to current code, proposed objective reliability index, finally put forward reference value fur design principle and calculating methods with reliability theory of gravity retaining wall.

Research conclusions: The objective reliability index suggested can satisfy the demand of engineering. The size of gravity retaining wall designed by the expression advanced is close to tradition. The reference value of Load partial coefficients is near to the value in America standard. The formulas, the objective reliability index and the partial coefficients about gravity retaining wall may he regard as reference，when”Code for design on retaining structures of railway subgrade " is compiled