Process / pipelineProbabilistic safety analysis
二阶可靠度方法 (SORM)
二阶可靠度方法 (SORM) 是 FORM 的一种扩展，它通过考虑设计点处极限状态面的曲率来改进失效概率估计。SORM 由 Fiessler、Neumann 和 Rackwitz 于 1979 年提出，在保持计算效率的同时，为非线性失效面提供了更精确的近似。当 FORM 的精度不足时，它已成为标准的改进方法。
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来源
- Fiessler, B., Neumann, H. J., & Rackwitz, R. (1979). Quadratic limit states in structural reliability. Journal of the Engineering Mechanics Division, 105(4), 661-676. DOI: 10.1061/jmcea3.0002512 ↗
- Breitung, K. (1984). Asymptotic approximations for multinormal integrals. Journal of Engineering Mechanics, 110(3), 357-366. DOI: 10.1061/(ASCE)0733-9399(1984)110:3(357) ↗
- Hohenbichler, M., & Rackwitz, R. (1988). Improvement of second-order reliability estimates by importance sampling. Journal of Engineering Mechanics, 114(12), 2195-2199. DOI: 10.1061/(ASCE)0733-9399(1988)114:12(2195) ↗
- Melchers, R. E. (2002). Structural Reliability Analysis and Prediction (2nd ed.). John Wiley & Sons. link ↗
如何引用本页
ScholarGate. (2026, June 3). Second-Order Reliability Method (SORM). ScholarGate. https://scholargate.app/zh/reliability-engineering/second-order-reliability-method
Which method?
Set this method beside its closest kin and read them side by side — the library lays the books on the table; the choice is yours.
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