Journal of Earthquake Engineering and Engineering Vibration. 2013, (05) Core

Static and dynamic finite element model updating of structures based on response surface method:theory and applicationChinese Full Text

HAN Jianping;LUO Yongpeng;Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province,Lanzhou University of Technology;Institute of Earthquake Protection and Disaster Mitigation,Lanzhou University of Technology;

Abstract: In this paper,response surface method is adopted to update the finite element model of the structure based on static and dynamic test data simultaneously.Using the reasonable experiment design and regression techniques,a response surface model is formulated to approximate the relationships between the parameters and response values instead of the initial finite element model for further updating.In order to investigate the feasibility and accuracy of this approach,a numerical example of a simply supported beam is taken as case study and finite element model of the beam with assumed damage is updated first.The objective function is built based on deflections and modal frequencies from static and dynamic analysis simultaneously.The objective functions based on deflections and modal frequencies separately are also built for comparison.Updated results show that updated parameters from all three objective functions are close to the assumed values and updated parameters based on deflections and modal frequencies simultaneously are more accurate than the others.Furthermore,this approach is applied to update the finite element model of a prestressed reinforced concrete rigid frame-continuous girders bridge based on the in-situ static and dynamic measurement results.The numerical modal frequencies and deflections from the updated model are in good agreement with the in-situ measurements.This indicates that the updated finite element model can accurately represent the mechanical properties of the bridge and it can serve as a benchmark model for further damage detection and condition assessment of the bridge.

Keywords：

finite element model updating; response surface method; static and dynamic test; parameter selecting; rigid frame-continuous girders bridge;

DOI：
10.13197/j.eeev.2013.05.128.hanjp.016
Series：
Subject：
Classification Code：
TU311

Mobile Reading

Read on your phone instantly

Step 1
Scan QR Codes

"Mobile CNKI-CNKI Express" App

Step 2
Open“CNKI Express”

and click the scan icon in the upper left corner of the homepage.

Step 3
Scan QR Codes

Read this article on your phone.
HTML
CAJ Download
PDF Download

Contents

Static and dynamic finite element model updating of structures based on response surface method:theory and applicationChinese Full Text

HAN Jianping;LUO Yongpeng;Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province,Lanzhou University of Technology;Institute of Earthquake Protection and Disaster Mitigation,Lanzhou University of Technology;

Read on your phone instantly

Citation Network

Related Literature