An Experimental Study of the Unsteady Vortex and Flow Structures around Twin-Box-Girder Bridge Deck Models

2013 ◽  
Author(s):  
Wenli Chen ◽  
Shujin Lima ◽  
Hui Li ◽  
Hui Hu
Keyword(s):  
Experimental Study ◽  
Bridge Deck ◽  
Flow Structures ◽  
Box Girder ◽  
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.

FEM Analysis and Parameters Determination of Lightweight Concrete Multiple Shear Rivet Paving Project on Steel Box Girder Bridge Deck

2013 ◽  
Vol 671-674 ◽  
pp. 1306-1311
Author(s):  
Jun Fu ◽  
Lu Han ◽  
Qing Jun Ding ◽  
Fa Zhou Wang
Keyword(s):  
Bridge Deck ◽  
Mechanical Response ◽  
Lightweight Concrete ◽  
Fem Analysis ◽  
Box Girder ◽  
Steel Box Girder ◽  
Wheel Loading ◽  
Box Girder Bridge ◽  
Girder Bridge ◽  
Steel Box Girder Bridge

The mechanical response of lightweight concrete multiple shear rivet pavement on the steel box girder bridge deck under wheel loading are analyzed by finite element method. Besides, the effects of various distance、diameter、height of shear rivet to pavement, are researched as well as the effects of thickness of lightweight concrete. Then some recommended parameters are put forward for the paving project.

scholarly journals Comparative Study on Dynamic Response of Deck Pavement of Two Kinds of Box Girder Bridges under Moving Loads

2019 ◽  
Vol 2019 ◽  
pp. 1-13
Author(s):  
Chundi Si ◽  
Xin Su ◽  
Enli Chen ◽  
Zhanyou Yan
Keyword(s):  
Finite Element ◽  
Shear Stress ◽  
Dynamic Response ◽  
Bridge Deck ◽  
Uniform Load ◽  
Box Girder Bridges ◽  
Box Girder ◽  
Girder Bridges ◽  
Box Girder Bridge ◽  
Girder Bridge

The objective of this study is to analyse the difference of dynamic response of the deck pavement between a box girder bridge with corrugated steel webs and a concrete web box girder bridge. In this study, a simply supported beam with a span of 34 m is taken as the research object. According to the principle of equal shear stress of the box girder section, the three-dimensional finite element model of the superstructure of two kinds of box girder bridges is established by the finite element software ABAQUS. The DLOAD and UTRACLOAD subroutines are called to impose a movement load on the bridge deck. The dynamic response of the bridge deck pavement under different vehicle speeds (36 km/h, 72 km/h, and 108 km/h) and different load types (single wheel rectangular uniform load and double wheel rectangular uniform load) is calculated. The variation trends of vertical displacement, longitudinal shear stress, and transverse stress of two bridges are compared. The results show that, under the same conditions, the dynamic response of the box girder bridge with corrugated steel webs is greater than that of the equivalent concrete web box girder bridge. The box girder bridge with corrugated steel webs has lightweight, good seismic performance and bending resistance, and more obvious advantages in deflection control. The equivalent concrete web box girder bridge has good shear and torsional properties. The response of two kinds of deck pavement systems of the box girder bridge under dynamic loads is more obvious than that under static loads. This study would provide some theoretical reference for the dynamic response of the deck paving system of box girder bridges.

scholarly journals Dynamic Analysis of Horizontally Curved Thin-Walled Box-Girder Bridge due to Moving Vehicle

2007 ◽  
Vol 14 (3) ◽  
pp. 229-248 ◽  
Author(s):  
K. Nallasivam ◽  
Anjan Dutta ◽  
Sudip Talukdar
Keyword(s):  
Degrees Of Freedom ◽  
Bridge Deck ◽  
Impact Excitation ◽  
Impact Factors ◽  
Box Girder ◽  
Bridge Model ◽  
Thin Walled ◽  
Box Girder Bridge ◽  
Girder Bridge ◽  
The Impact

The impact on curved box-girder bridges due to vehicle moving across rough bridge deck have been analyzed using bridge-vehicle coupled dynamics. The bridge deck unevenness has been assumed to be a homogeneous random process in space specified by a PSD function. The analysis incorporates the effect of centrifugal forces due to vehicle moving on curved bridge. The curved box-girder bridge has been numerically modeled using computationally efficient thin-walled box-beam finite elements which take into account the torsional warping, distortion and distortional warping, that are important features of thin-walled box girders. Rigid vehicle with longitudinal and transverse input to the wheels giving rise to heave-pitch-roll degrees of freedom has been considered. The theoretical bridge model used in simulation study has been validated by a free vibration experiment using impact excitation. The impact factors for several response parameters such as bending moment, shear force, torsional moment, torsional bi-moment, distortional moment, distortional bi-moment and vertical deflections have been obtained for various bridge-vehicle parameters. Both constant velocity and forward acceleration of the vehicle have been considered to examine impact factor. The results highlighted that the impact factors of a curved box girder bridge corresponding to torsion, distortion and their corresponding bimoments have been observed to be generally very high, while those of the other responses are also relatively higher than that of corresponding straight box girder bridge.

Sign in / Sign up

Export Citation Format

Share Document