Effect of noise on the assessment of displacements computed from accelerations recorded at linear and nonlinear civil engineering structures

被引：2

作者：

De-la-Colina, Jaime ^{[1
]}

Arias-Lara, Damaris ^{[2
]}

Valdes-Gonzalez, Jesus ^{[1
]}

机构：

[1] Univ Autonoma Estado Mexico, Fac Ingn, Cerro Coatepec S-N,Ciudad Univ, Toluca 50110, Estado De Mexic, Mexico

[2] Univ Nacl Autonoma Mexico, Fac Ingn, Ciudad Univ, Mexico City 04510, DF, Mexico

来源：

MEASUREMENT | 2019年 / 136卷

关键词：

Displacement estimates; Numerical methods; Linear oscillators; Nonlinear oscillators; Earthquake response; Signal noise contamination; IDENTIFICATION;

D O I：

10.1016/j.measurement.2018.12.108

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The purpose of this study is to assess the effect of noise on the estimations of response displacements of single degree-of-freedom systems representative of simple civil-engineering structures subjected to earthquakes. Linear and nonlinear oscillators, with frequencies between 0.1 and 10 Hz and subjected to an earthquake excitation, were considered. Nine signal/noise ratios were studied for two noise input locations: signal contamination at the excitation and signal contamination at the acceleration response. The methodologies considered to estimate displacements were the following: Trifunac and Lee [17], Converse and Brady [9], Chiu [7], and Boore et al. [4]. Results show that noise affects more the estimation of displacements in nonlinear systems than in linear ones. The study also provides values of the signal/ noise ratios for which acceptable estimations of displacements are obtained for both linear and nonlinear systems. The most suitable methods to estimate displacements from acceleration records are also recommended. (C) 2019 Elsevier Ltd. All rights reserved.

引用

页码：724 / 734

页数：11