FOSM在水平场地液化概率评价中的应用

Application of FOSM to liquefaction probability evaluation for a horizontal site

摘要

摘要: 为了更好地进行场地液化评价,将可靠度理论引入水平场地液化概率评价中。以标准贯入试验(SPT)实测数据的统计分析结果为基础,用一次二阶矩法(FOSM)建立水平场地液化概率评价模型,分析了测试数据变异系数对抗液化安全系数与液化概率的影响,并建议了水平场地液化概率评价标准。实例分析表明,新建水平场地液化概率评价模型各参数的物理意义与统计指标明确,相比传统的确定性分析方法,不仅能判定液化的发生与否,还能给出液化发生的概率,这为进行基于风险分析的抗震设计提供了可能。
- 液化 /
- 概率评价 /
- FOSM /
- 水平场地
Abstract: Reliability theory is introduced to liquefaction probability evaluation for a horizontal site.Based on the statistic analysis of standard penetration test(SPT) data,a model for evaluation of site liquefaction probability is developed using the method of First-Order Second-Moment(FOSM).The relationship between the variation coefficient of test data and the factor of safety against liquefaction and liquefaction probability is analyzed,and liquefaction probability evaluation standard for a horizont...
- liquefaction /
- probability evaluation /
- FOSM /
- horizontal site