Cluster computing‐aided model updating for a high‐fidelity finite element model of a long‐span cable‐stayed bridge

2020 ◽  
Vol 49 (9) ◽  
pp. 904-923 ◽  
Author(s):  
Kaiqi Lin ◽  
You‐Lin Xu ◽  
Xinzheng Lu ◽  
Zhongguo Guan ◽  
Jianzhong Li
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Cluster Computing ◽  
Model Updating ◽  
Element Model ◽  
High Fidelity ◽  
Cable Stayed Bridge ◽  
Long Span

The Finite Element Model Updating of Long Span Cable-Stayed Bridge Based on Static and Dynamic Loading Test

2014 ◽  
Vol 644-650 ◽  
pp. 5014-5018 ◽  
Author(s):  
Li Na Yue ◽  
Sheng Li
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Dynamic Loading ◽  
Static Loading ◽  
Model Updating ◽  
Element Model ◽  
Physical Parameters ◽  
Loading Test ◽  
Cable Stayed Bridge ◽  
Mixed Beam

In this paper the initial finite element model (IFEM) of the Jing Yue Yangtze River Highway Bridge was established and achieved the reasonable finished state of the bridge, which was the large-span, unequal height pylons and mixed beam cable-stayed bridge. The three-dimensional IFEM of the bridge accurately reflected its mechanical behavior under the static loading, and the structure physical parameters and stiffness of the IFEM didn’t need updating through the static loading test. The boundary condition parameters of the IFEM were updated through comparing the measured modal results of the dynamic loading test with the modal analysis results of the IFEM. The updated finite element model can truly reflect the dynamic characteristics of the bridge structure, and the model can be used as the benchmark finite element model, which can provide reliable calculation benchmark of the long term status assessment during the service stage.

Time history analysis-based nonlinear finite element model updating for a long-span cable-stayed bridge

2020 ◽  
pp. 147592172096386
Author(s):  
Kaiqi Lin ◽  
You-Lin Xu ◽  
Xinzheng Lu ◽  
Zhongguo Guan ◽  
Jianzhong Li
Keyword(s):  
Finite Element ◽  
Response Time ◽  
Finite Element Model ◽  
Model Updating ◽  
Time History ◽  
Element Model ◽  
Nonlinear Finite Element ◽  
Long Span ◽  
Time Histories ◽  
Nonlinear Finite Element Model

Accurate finite element models play significant roles in the design, health monitoring and life-cycle maintenance of long-span bridges. However, due to uncertainties involved in finite element modelling, updating of the finite element model to best represent the real bridge is inevitable. This is particularly true after a long-span bridge experiences a moderate or severe earthquake and suffers some damage. This study thus proposes a time history analysis-based nonlinear finite element model updating method for long-span cable-stayed bridges. Special efforts are made to (1) establish the response time history-based objective functions and associated acceptance criteria, (2) conduct comprehensive sensitivity analyses to select appropriate nonlinear updating parameters and (3) develop a highly efficient cluster computing-aided optimization algorithm. A scaled structure of the Sutong cable-stayed bridge in China is adopted as a case study. Three nonlinear test cases performed in the shake table tests of the scaled bridge are used to validate the feasibility and accuracy of the proposed method. A good agreement is observed between the simulated response time histories and the measured response time histories for the scaled bridge under both moderate and strong ground motions. The proposed method could provide an accurate nonlinear finite element model for better performance assessment, damage detection and life-cycle maintenance of long-span cable-stayed bridges.

A new method for finite element model updating in structural dynamics

2010 ◽  
Vol 24 (7) ◽  
pp. 2137-2159 ◽  
Author(s):  
J.L. Zapico-Valle ◽  
R. Alonso-Camblor ◽  
M.P. González-Martínez ◽  
M. García-Diéguez
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Structural Dynamics ◽  
Model Updating ◽  
Element Model ◽  
New Method ◽  
Finite Element Model Updating
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