| 边坡可靠性指标及敏感性因素分析 |
| Analysis and Calculation of Slope Reliability and Sensitivity Factors |
| 投稿时间：2014-02-24 |
| 中文关键词:铁路规范转轨 极限状态方程 可靠性指标 影响分析 |
| 英文关键词:transition of railway specification limit state equation reliability index effect analysis |
| 基金项目:国家自然科学基金(51208319) |
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| 中文摘要: |
| 我国铁路规范拟从容许应力设计方法转轨采用极限状态法。论文的研究内容为铁路规范的转轨提供了部分研究结果，首先推导了路堑边坡极限状态方程及可靠度指标的计算公式，然后采用JC法，计算了边坡的可靠指标，基本正态分布在2.5左右，取可靠度指标为2.5，失效概率为0.62％。然后计算分析了土性参数中γ值、c 值与 φ 值的变异性对可靠指标的影响，其中γ值和列车荷载的变异性对可靠指标的影响不大，c 值与 φ 值的变异性对可靠指标的影响较大。 |
| 英文摘要: |
| The limit state design method will be used in Chinese Railway Standard to replace the allowable stress design. Some research results are provided in this paper. Firstly, the formula of limit state equation and the reliability index of cutting slope is derived; secondly, with JC method, the reliability index of slope is calculated to be about 2.5, and the probability of failure is about 0.62%; In the end, the calculation and influence analysis of soil parameters in the gamma value variation, C value variation and φvalue variation to the value of reliability index are given. From the calculated result, gamma value and train load variability have little effect on the reliability index while the effects of C value variation and the φ value variation to the reliability index is bigger. |
| 张昀青,李维珍,闫静昌,林川川.边坡可靠性指标及敏感性因素分析[J].石家庄铁道大学学报(自然科学版),2015,(1):62-65,76. |
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