基于正交试验的土体动力等效线性模型参数敏感性分析
Parameter Sensitivity Analysis of Soil Dynamic Equivalent Linear Model Based on Orthogonal Tests
张富有 1葛凯 1周强强 2魏宇辰1
作者信息
- 1. 河海大学 土木与交通学院,江苏 南京 210024
- 2. 中建中环生态环保科技有限公司,江苏 苏州 215000
- 折叠
摘要
针对土体材料具有不均匀性的特点,动力参数存在一定的不确定性问题,基于正交试验法,以一堰塞坝为例,采用等效线性模型,对堰塞坝坝体竖向地震峰值加速度和竖向永久变形进行了等效线性模型参数的敏感性分析.结果表明:动力模型中参数k2、n、λmax 对于坝体竖向地震峰值加速度的影响较大,其中k2 的敏感性最大,其次是n;参数k2、k1、λmax对坝体竖向永久变形的影响较大,其中k2 的敏感性最大,其次是k1.
Abstract
In response to the non-uniformity of soil materials and the uncertainty of dynamic parame-ters,based on the orthogonal experimental method and taking a dam as an example,an equivalent li-near model was used to analyze the sensitivity of equivalent linear model parameters to the vertical seis-mic peak acceleration and vertical permanent deformation of the dam body.The results indicate that the parameters k2,n,and λmax have significant impacts on the vertical seismic peak acceleration of the dam body,with k2 being the most sensitive,followed by n.The parameters k2,k1,and λmax have significant impacts on the vertical permanent deformation of the dam body,with k2 being the most sensitive,fo-llowed by k1.
关键词
正交试验法/地震作用/等效线性模型/敏感性分析Key words
orthogonal test method/seismic effects/equivalent linear model/sensitivity analysis引用本文复制引用
基金项目
国家自然科学基金面上项目(41977240)
出版年
2024
NETL
NSTL
万方数据