|本期目录/Table of Contents|

[1]张 梦,陈旭勇*,彭元林,等.基于改进合成少数类过采样技术的非概率可靠性指标解[J].武汉工程大学学报,2024,46(02):231-236.[doi:10.19843/j.cnki.CN42-1779/TQ.202209031]
 ZHANG Meng,CHEN Xuyong*,PENG Yuanlin,et al.Solution to non-probabilistic reliability indices based onimproved synthetic minority oversampling technique[J].Journal of Wuhan Institute of Technology,2024,46(02):231-236.[doi:10.19843/j.cnki.CN42-1779/TQ.202209031]
点击复制

基于改进合成少数类过采样技术的
非概率可靠性指标解
(/HTML)
分享到:

《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
46
期数:
2024年02期
页码:
231-236
栏目:
资源与土木工程
出版日期:
2024-04-28

文章信息/Info

Title:
Solution to non-probabilistic reliability indices based on
improved synthetic minority oversampling technique
文章编号:
1674 - 2869(2024)02 - 0231 - 06
作者:
张 梦陈旭勇*彭元林李书雅
武汉工程大学土木工程与建筑学院,湖北 武汉 430074
Author(s):
ZHANG MengCHEN Xuyong*PENG YuanlinLI Shuya
School of Civil Engineering and Architecture,Wuhan Institute of Technology,Wuhan 430074, China
关键词:
非概率可靠性指标合成少数类过采样技术样本分类策略超球限制策略极限状态曲面
Keywords:
non-probabilistic reliability indicessynthetic minority oversampling technologysample classification strategy super ball restriction strategy limit state surface
分类号:
TB114.3
DOI:
10.19843/j.cnki.CN42-1779/TQ.202209031
文献标志码:
A
摘要:
当结构的功能函数呈现高度非线性、极限状态曲面为多区域的情形时,现有算法无法有效求解非概率可靠性指标,为解决此类问题,将合成少数类过采样技术(SMOTE)进行改进,提出了基于改进SMOTE算法的非概率可靠性指标解法。首先基于非概率可靠性指标的几何意义,将样本分类策略、超球限制策略与标准SMOTE算法相结合,提出了改进SMOTE算法来进一步提升算法在极限状态曲面附近的采样效率;然后结合改进SMOTE算法在标准化空间中高精度的拟合局部极限状态曲面,进而搜索得到非概率可靠性指标;最后给出了基于改进SMOTE算法的非概率可靠性指标解的主要流程。数值算例表明,当极限状态曲面呈现局部闭合、多区域的特点时,改进后的SMOTE算法可以高效地获取位于极限状态曲面附近的样本点,进而高精度地拟合极限状态曲面。将本文方法的计算结果与解析解对比,相对误差远远小于工程中的最大误差限值5%,说明改进SMOTE算法能够较好地处理高度非线性功能函数,验证了所提算法的有效性和实用性。

Abstract:
The existing algorithm cannot solve the non-probabilistic reliability indices(NPRIs) effectively when the functional function of the structure presents a high degree of nonlinearity and the limit state surface is multi-regional. To solve such problems,a synthetic minority oversampling technique (SMOTE) was improved and the NPRIs solution method was proposed. Firstly,based on the geometric meaning of NPRIs,an improved SMOTE algorithm was proposed to further improve the sampling efficiency of the algorithm near the critical surface by combining the sample classification strategy,hypersphere restriction strategy and the standard SMOTE algorithm. Then the improved SMOTE algorithm was combined to fit the local limit state surface in the normalized space with high accuracy,and the NPRIs were searched. Finally,the main flow of the NPRIs solution based on the improved SMOTE algorithm was given. The numerical example shows that when the limit state surface presents the characteristics of local closure and multiple regions,the improved SMOTE algorithm can efficiently produce the sample points located near the limit state surface,and then fits the limit state surface with high accuracy. Comparing the calculation results with that of the analytical solution,the relative errors are less than the maximum error limit of 5% in engineering,which indicates that the improved SMOTE algorithm can better handle the highly nonlinear functional functions and verifies the effectiveness and practicality of the proposed algorithm.

参考文献/References:

[1] BEN-HAIM Y. A non-probabilistic concept of reliability [J]. Structural Safety,1994,14(4):227-245.

[2] BEN-HAIM Y. A non-probabilistic measure of reliability of linear systems based on expansion of convex models [J]. Structural Safety,1995,17(2):91-109.
[3] BEN-HAIM Y,ELISHAKOFF I. Discussion on:a non-probabilistic concept of reliability [J]. Structural Safety,1995,17(3):195-199.
[4] 郭书祥,吕震宙,冯元生.基于区间分析的结构非概率可靠性模型[J].计算力学学报,2001,18(1):56-60.
[5] 苏怀智,李家田.在役心墙堆石坝非概率可靠度评估与预警方法[J].岩石力学与工程学报,2021,40(12):2526-2534.
[6] 钱毅,王文才,李楠,等. 复合材料高速转筒的区间非概率可靠性分析[J].机械设计,2021,38(12):40-46.
[7] 高乐星,梁斌,吴政.边坡凸集模型非概率可靠度求解方法[J].公路交通科技,2022,39(5):57-64.
[8] 邱志平,夏海军.基于功能度量法的桁架结构非概率可靠性拓扑优化方法研究[J].计算力学学报,2021,38(4):423-429.
[9] 郭书祥,张陵,李颖.结构非概率可靠性指标的求解方法[J].计算力学学报,2005,22(2):227-231.
[10] 江涛,陈建军,姜培刚,等.区间模型非概率可靠性指标的一维优化算法[J].工程力学,2007,24(7):23-27.
[11] 陈旭勇,樊建平.非概率可靠性中一维优化算法的改进及其在桥梁评估中应用[J].工程力学,2011,28(5):21-25,30.
[12] 樊建平,李世军,陈旭勇.非概率可靠性指标空间搜索算法[J].计算力学报,2012,29(6):831-834,840.
[13] 崔智勇,范小宁.基于微粒群算法的区间模型非概率可靠性指标的计算[J].计算力学学报,2016,33(6):863-867.
[14] 李世军,樊建平,漆炜,等.非概率区间模型可靠性指标的梯度投影算法[J].计算力学学报,2013,30(2):192-197.
[15] 樊建平,陈旭勇.区间模型非概率可靠性全局最优解[J].固体力学学报,2014,35(5):476-484.
[16] 陈旭勇.非概率响应面法在结构可靠性中的应用[J].武汉工程大学学报,2012,34(8):46-49.
[17] CHAWLA N V,BOWYER K W,HALL L O,et al. SMOTE:synthetic minority over-sampling technique [J]. Journal of Artificial Intelligence Research,2002,16:321-357.
[18] 孙涛,吴海丰,梁志刚,等.SMOTE 算法在不平衡数据中的应用[J].北京生物医学工程,2012,31(5):528-530.
[19] 衣柏衡,朱建军,李杰.基于改进SMOTE的小额贷款公司客户信用风险非均衡SVM分类[J].中国管理科学,2016,24(3):24-30.

相似文献/References:

备注/Memo

备注/Memo:
收稿日期:2022-09-26
基金项目:国家自然科学基金(52178301)
作者简介:张 梦,硕士研究生。Email:1305303885@qq.com
*通信作者:陈旭勇,博士,教授。Email:Chenxy@wit.edu.cn
引文格式:张梦,陈旭勇,彭元林,等. 基于改进合成少数类过采样技术的非概率可靠性指标解[J]. 武汉工程大学学报,2024,46(2):231-236.
更新日期/Last Update: 2024-05-01