Dynamic finite element model updating of prestressed concrete continuous box-girder bridge

2009 ◽  
Vol 8 (3) ◽  
pp. 399-407 ◽  
Author(s):  
Xiankun Lin ◽  
Lingmi Zhang ◽  
Qintao Guo ◽  
Yufeng Zhang
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Prestressed Concrete ◽  
Model Updating ◽  
Element Model ◽  
Finite Element Model Updating ◽  
Box Girder ◽  
Dynamic Finite Element ◽  
Box Girder Bridge ◽  
Girder Bridge

Accurate FEM of Steel-Concrete Composite Box Girder Bridge for Damage Identification Based on Dynamical Experimental Study

2013 ◽  
Vol 330 ◽  
pp. 872-877
Author(s):  
Yi Qiang Xiang ◽  
Li Si Liu ◽  
Shao Jun Li
Keyword(s):  
Experimental Study ◽  
Finite Element ◽  
Finite Element Model ◽  
Damage Identification ◽  
Element Model ◽  
Scale Model ◽  
Box Girder ◽  
Box Girder Bridge ◽  
Girder Bridge ◽  
The Finite Element Model

Based on the results of experiment, this paper discusses about the updating and validation of accurate finite element model for damage identification of the steel-concrete composite box girder bridge. Taking a 5 meters long steel-concrete composite box girder bridge as the research object and the finite element model is established. By means of scale model test the updating of the accurate finite element model has been completed and validation is confirmed.

Analysis of the Design Method for the Casual Anchor Skeleton at the Closure for PC Continuous Box Girder Bridge

2013 ◽  
Vol 712-715 ◽  
pp. 1011-1017
Author(s):  
Ting Li ◽  
Xing Wang Sheng ◽  
Hua Shuai Zhang
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Design Method ◽  
Element Model ◽  
Analytic Method ◽  
Finite Model ◽  
Box Girder ◽  
Box Girder Bridge ◽  
Girder Bridge ◽  
Element Study

A finite element study was performed to investigate the design method of the casual anchor skeleton at the closure of a PC continuous box girder bridge. Based on a finite element model of a certain four spans PC continuous box girder bridge, we found that the stresses of skeleton calculated with the finite model were 5 percent beyond those with the traditional analytic method. Besides, the tensile stresses increased 19 percent and the compressive ones were 14 percent decreased considered the vertical unbalance temperature and both increased 8 percent for the wind, which were totally ignored in the traditional analytic method. So, the traditional analytic method is inaccurate and unsafe for the casual anchor skeleton design, and the general temperature difference, the vertical unbalance temperature and the wind are better to be considered.

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