Article(id=1228635270757675869, tenantId=1146029695717560320, journalId=1225147924628267009, issueId=1228635264860484432, articleNumber=null, orderNo=null, doi=10.16385/j.cnki.issn.1004-4523.2024.09.006, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1663257600000, receivedDateStr=2022-09-16, revisedDate=1671638400000, revisedDateStr=2022-12-22, acceptedDate=null, acceptedDateStr=null, onlineDate=1770859075488, onlineDateStr=2026-02-12, pubDate=1727452800000, pubDateStr=2024-09-28, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1770859075488, onlineIssueDateStr=2026-02-12, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1770859075488, creator=13701087609, updateTime=1770859075488, updator=13701087609, issue=Issue{id=1228635264860484432, tenantId=1146029695717560320, journalId=1225147924628267009, year='2024', volume='37', issue='9', pageStart='1451', pageEnd='1624', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1770859074081, creator=13701087609, updateTime=1770859151707, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1228635590502055946, tenantId=1146029695717560320, journalId=1225147924628267009, issueId=1228635264860484432, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1228635590502055947, tenantId=1146029695717560320, journalId=1225147924628267009, issueId=1228635264860484432, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=1493, endPage=1500, ext={EN=ArticleExt(id=1228635271311324007, articleId=1228635270757675869, tenantId=1146029695717560320, journalId=1225147924628267009, language=EN, title=Dimension-reduction representation of seismic ground motion using filtered white noise model in time domain, columnId=null, journalTitle=Journal of Vibration Engineering, columnName=null, runingTitle=null, highlight=null, articleAbstract=
There are two kinds of stochastic seismic ground motion simulation methods: frequency-domain methods and time-domain methods. Based on the time-domain model of single filtered white noise,this paper proposes the time-domain representation for simulating stationary and non-stationary seismic ground motion processes. In essence,the time-domain representation can be regarded as linear superposition of deterministic functions modulated by a series of standard orthogonal random variables,and the set of orthogonal random variables is defined as the form of random orthogonal functions to achieve efficient dimension-reduction. Therefore,by introducing three kinds of random orthogonal functions,i.e.,Legendre orthogonal polynomial of non-Gaussian type,Hartley orthogonal basis and Hartley orthogonal elementary of Gaussian type,the acceleration process of seismic ground motion can be accurately represented in the time-domain model with only one elementary random variable. Numerical examples of seismic stationary ground motion process show the effectiveness of the proposed method,which is superior to the Monte Carlo method. The analysis of fully nonstationary seismic ground motion shows the engineering applicability of the proposed method.
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随机地震动模拟一般有频域和时域两大类方法。本文基于单重过滤白噪声时域模型,建议了平稳地震动过程和全非平稳地震动过程模拟的时域表达。本质上,时域表达可视为一系列标准正交随机变量所调制的确定性函数的线性叠加,而正交随机变量集则可定义为随机正交函数形式来实现高效降维。为此,通过引入三类随机正交函数,即非高斯型的Legendre正交多项式、Hartley正交基和高斯型的Hartley正交基,均可实现仅用一个基本随机变量在时域模型上精细表达地震动加速度过程。平稳地震动过程的数值算例表明了本文方法的有效性,且优于Monte Carlo方法;全非平稳地震动的算例分析则表明了本文方法的工程适用性。
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平稳地震动加速度的代表性样本, figureFileSmall=68ImmHixAIDzgYAcHI/zmQ==, figureFileBig=K6KySKFGEconv6wb4gh1Lg==, tableContent=null), ArticleFig(id=1228635317259924466, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228635270757675869, language=EN, label=Fig.2, caption=
Comparison of the mean and standard deviation between the simulated stationary ground motion processes and the targets, figureFileSmall=yOJ1tgfB24GqCWbZxGOKPQ==, figureFileBig=n0wN9P+kMoTObXIfaQbM1Q==, tableContent=null), ArticleFig(id=1228635317339616247, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228635270757675869, language=CN, label=图2, caption=
平稳地震动均值和标准差的模拟值与目标值比较, figureFileSmall=yOJ1tgfB24GqCWbZxGOKPQ==, figureFileBig=n0wN9P+kMoTObXIfaQbM1Q==, tableContent=null), ArticleFig(id=1228635317415113723, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228635270757675869, language=EN, label=Fig.3, caption=
Comparison of the power spectrum density between the representative sample set and the target, figureFileSmall=0dbhXn+Zr73+JUBJGM9H9w==, figureFileBig=u+anboz+kq0F+1rDEl5p+g==, tableContent=null), ArticleFig(id=1228635317511582719, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228635270757675869, language=CN, label=图3, caption=
代表性样本集的功率谱与目标谱比较, figureFileSmall=0dbhXn+Zr73+JUBJGM9H9w==, figureFileBig=u+anboz+kq0F+1rDEl5p+g==, tableContent=null), ArticleFig(id=1228635317591274498, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228635270757675869, language=EN, label=Fig.4, caption=
The representative samples of non-stationary ground motion acceleration, figureFileSmall=juz9hvzhaFZUu8Z5lwCbIw==, figureFileBig=byA1PiQ9ZpFf7MQoqhSacA==, tableContent=null), ArticleFig(id=1228635317662576641, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228635270757675869, language=CN, label=图4, caption=
非平稳地震动加速度的代表性样本, figureFileSmall=juz9hvzhaFZUu8Z5lwCbIw==, figureFileBig=byA1PiQ9ZpFf7MQoqhSacA==, tableContent=null), ArticleFig(id=1228635317750657030, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228635270757675869, language=EN, label=Fig.5, caption=
Comparison of the mean and standard deviation between the simulated non-stationary ground motion processes and the targets, figureFileSmall=Id4/XgfiHzDkSMbUGVFrJw==, figureFileBig=Cl0DcEvEcNugxWB4F0++gQ==, tableContent=null), ArticleFig(id=1228635317826154507, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228635270757675869, language=CN, label=图5, caption=
非平稳地震动均值和标准差的模拟值与目标值比较, figureFileSmall=Id4/XgfiHzDkSMbUGVFrJw==, figureFileBig=Cl0DcEvEcNugxWB4F0++gQ==, tableContent=null), ArticleFig(id=1228635317901651982, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228635270757675869, language=EN, label=Fig.6, caption=
Comparison of the response spectrum between the simulated non-stationary ground motions and the target, figureFileSmall=Xfhf/nxn1AUYAVe1UM4LVA==, figureFileBig=bPtVKYsQ75U+P2E6NkfzxA==, tableContent=null), ArticleFig(id=1228635317977149459, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228635270757675869, language=CN, label=图6, caption=
非平稳地震动加速度反应谱与规范反应谱的比较, figureFileSmall=Xfhf/nxn1AUYAVe1UM4LVA==, figureFileBig=bPtVKYsQ75U+P2E6NkfzxA==, tableContent=null), ArticleFig(id=1228635318061035539, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228635270757675869, language=EN, label=Tab.1, caption=
The discrete representative point formula for elementary random variables
, figureFileSmall=null, figureFileBig=null, tableContent=
| 随机正交函数的类型 | 基本随机变量 的离散代表点公式 |
|---|
| Legendre正交多项式(非高斯型) | , |
| Hartley正交基(非高斯型) | , |
| 高斯型的Hartley正交基 | , |
), ArticleFig(id=1228635318136533012, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228635270757675869, language=CN, label=表1, caption=
基本随机变量的离散代表点公式
, figureFileSmall=null, figureFileBig=null, tableContent=
| 随机正交函数的类型 | 基本随机变量 的离散代表点公式 |
|---|
| Legendre正交多项式(非高斯型) | , |
| Hartley正交基(非高斯型) | , |
| 高斯型的Hartley正交基 | , |
), ArticleFig(id=1228635318241390618, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228635270757675869, language=EN, label=Tab.2, caption=
The average relative error of mean value
, figureFileSmall=null, figureFileBig=null, tableContent=
| 类 型 | 均值的平均相对误差/% |
|---|
| 226 | 422 | 626 |
|---|
| Legendre正交多项式 |  |  |  |
| Hartley正交基 |  |  |  |
| 高斯型的Hartley正交基 |  |  |  |
| Monte Carlo方法 | 5.42 | 3.98 | 3.39 |
), ArticleFig(id=1228635318321082398, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228635270757675869, language=CN, label=表2, caption=
均值的平均相对误差
, figureFileSmall=null, figureFileBig=null, tableContent=
| 类 型 | 均值的平均相对误差/% |
|---|
| 226 | 422 | 626 |
|---|
| Legendre正交多项式 |  |  |  |
| Hartley正交基 |  |  |  |
| 高斯型的Hartley正交基 |  |  |  |
| Monte Carlo方法 | 5.42 | 3.98 | 3.39 |
), ArticleFig(id=1228635318421745700, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228635270757675869, language=EN, label=Tab.3, caption=
The average relative error of standard deviation
, figureFileSmall=null, figureFileBig=null, tableContent=
| 类 型 | 标准差的平均相对误差/% |
|---|
| 226 | 422 | 626 |
|---|
| Legendre正交多项式 | 3.84 | 2.86 | 2.31 |
| Hartley正交基 | 3.94 | 2.72 | 2.29 |
| 高斯型的Hartley正交基 | 3.72 | 2.74 | 2.22 |
| Monte Carlo方法 | 4.04 | 2.75 | 2.31 |
), ArticleFig(id=1228635318534991911, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228635270757675869, language=CN, label=表3, caption=
标准差的平均相对误差
, figureFileSmall=null, figureFileBig=null, tableContent=
| 类 型 | 标准差的平均相对误差/% |
|---|
| 226 | 422 | 626 |
|---|
| Legendre正交多项式 | 3.84 | 2.86 | 2.31 |
| Hartley正交基 | 3.94 | 2.72 | 2.29 |
| 高斯型的Hartley正交基 | 3.72 | 2.74 | 2.22 |
| Monte Carlo方法 | 4.04 | 2.75 | 2.31 |
), ArticleFig(id=1228635318681792554, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228635270757675869, language=EN, label=Tab.4, caption=
The average relative error of power density spectrum
, figureFileSmall=null, figureFileBig=null, tableContent=
| 类 型 | 功率谱的平均相对误差/% |
|---|
| 226 | 422 | 626 |
|---|
| Legendre正交多项式 | 2.08 | 1.67 | 1.84 |
| Hartley正交基 | 2.41 | 1.95 | 1.77 |
| 高斯型的Hartley正交基 | 2.41 | 1.98 | 1.73 |
| Monte Carlo方法 | 2.32 | 2.21 | 2.00 |
), ArticleFig(id=1228635318799233073, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228635270757675869, language=CN, label=表4, caption=
功率谱的平均相对误差
, figureFileSmall=null, figureFileBig=null, tableContent=
| 类 型 | 功率谱的平均相对误差/% |
|---|
| 226 | 422 | 626 |
|---|
| Legendre正交多项式 | 2.08 | 1.67 | 1.84 |
| Hartley正交基 | 2.41 | 1.95 | 1.77 |
| 高斯型的Hartley正交基 | 2.41 | 1.98 | 1.73 |
| Monte Carlo方法 | 2.32 | 2.21 | 2.00 |
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