Spatial Analysis of Continuous Rigid Frame High Pier under Completed Bridge State

2011 ◽  
Vol 280 ◽  
pp. 183-185 ◽  
Author(s):  
Ya Xun Yang ◽  
Lei Sun
Keyword(s):  
Deformation Analysis ◽  
Radius Of Curvature ◽  
Finite Element Program ◽  
Horizontal Alignment ◽  
Continuous Rigid Frame Bridge ◽  
Rigid Frame ◽  
Element Program ◽  
Stress And Deformation ◽  
High Pier ◽  
Rigid Frame Bridge

The continuous rigid frame bridge was taken as a typical background, considering the horizontal alignment curvature of the continuous rigid frame bridge space by the force, by selecting a different radius of curvature and height of piers, using the finite element program to the completed bridge state into the curve of the high continuous rigid frame bridge pier stress and deformation analysis, focused on the effects of curvature and height of piers. Analysis of it, provided the design suggestions for the curve corresponding rigid frame bridge.

Asymmetric of Continuous Rigid Frame Bridge Precamber and Construction

2013 ◽  
Vol 361-363 ◽  
pp. 1228-1231
Author(s):  
Wan Quan Tong
Keyword(s):  
Finite Element ◽  
Prestressed Concrete ◽  
Bridge Structure ◽  
Construction Process ◽  
Finite Element Program ◽  
Expansion Joints ◽  
Continuous Rigid Frame Bridge ◽  
Rigid Frame ◽  
Element Program ◽  
Rigid Frame Bridge

Prestressed concrete continuous rigid frame bridge has the advantages of no expansion joints, smooth driving the advantages,however, due to cross under serious scratch,seriously affect the service life of the bridge.Take a Large span asymmetric continuous rigid frame bridge of Guizhou as engineering background,use finite element Program Midas/Civil modeling,carried out Analysis of the construction process,And select a reasonable way to Set the bridge pre-camber,and provide reasonable data for the construction of control,to ensure the bridge structure linear reasonable.

scholarly journals Analysis of Non-Uniform Shrinkage Effect in Box Girder Sections for Long-Span Continuous Rigid Frame Bridge

2018 ◽  
Vol 13 (2) ◽  
pp. 146-155 ◽  
Author(s):  
Zhuoya Yuan ◽  
Pui-Lam Ng ◽  
Darius Bačinskas ◽  
Jinsheng Du
Keyword(s):  
Finite Element ◽  
General Purpose ◽  
Element Analysis ◽  
Box Girder ◽  
Finite Element Program ◽  
Continuous Rigid Frame Bridge ◽  
Rigid Frame ◽  
Shrinkage Effect ◽  
Rigid Frame Bridge

To consider the effect of non-uniform shrinkage of box girder sections on the long-term deformations of continuous rigid frame bridges, and to improve the prediction accuracy of analysis in the design phase, this paper proposes a new simulation technique for use with general-purpose finite element program. The non-uniform shrinkage effect of the box girder is transformed to an equivalent temperature gradient and then applied as external load onto the beam elements in the finite element analysis. Comparative analysis of the difference in deflections between uniform shrinkage and nonuniform shrinkage of the main girder was made for a vehicular bridge in reality using the proposed technique. The results indicate that the maximum deflection of box girder under the action of non-uniform shrinkage is much greater than that under the action of uniform shrinkage. The maximum downward deflection of the bridge girder caused by uniform shrinkage is 5.6 mm at 20 years after completion of bridge deck construction, whereas the maximum downward deflection caused by non-uniform shrinkage is 21.6 mm, which is 3.8 times larger. This study shows that the non-uniform shrinkage effect of the girder sections has a significant impact on the long-term deflection of continuous rigid frame bridge, and it can be accurately simulated by the proposed transformation technique.

Space Analysis of Long-Span Continuous Rigid Frame Bridges

2013 ◽  
Vol 671-674 ◽  
pp. 1045-1050
Author(s):  
Xian Wu Hao ◽  
Ya Xun Yang
Keyword(s):  
Radius Of Curvature ◽  
Stress And Strain ◽  
Analysis Program ◽  
Element Analysis ◽  
Long Span ◽  
Continuous Rigid Frame Bridge ◽  
Rigid Frame ◽  
Design Proposal ◽  
Rigid Frame Bridge ◽  
The Impact

With the background of continuous rigid frame bridge,this paper considers the impact of the structural weight and the pre-stressed force in the construction phase,uses the ANSYS finite element analysis program to analyze the stress and strain of an continuous rigid frame bridge in the the largest cantilever state, focuses on different effects of the different radius of curvature and pier height.Through the analysis constructs the control mentality and the corresponding design proposal for the continuous rigid frame bridge had been provided.

Investigation on Closure Temperature of Long-Span Pre-Stressed Concrete Continuous Rigid-Frame Bridge

2013 ◽  
Vol 361-363 ◽  
pp. 1325-1328
Author(s):  
Xiang Sheng Liao ◽  
Tian Liang
Keyword(s):  
Comparative Analysis ◽  
Temperature Effect ◽  
Limit State ◽  
Vertical Displacement ◽  
Closure Temperature ◽  
Long Span ◽  
Continuous Rigid Frame Bridge ◽  
Rigid Frame ◽  
Stress And Deformation ◽  
Rigid Frame Bridge

Based on a long-span pre-stressed concrete continuous rigid frame bridge, the Chaoyangsi bridge, the influence on stress and deformation of the girder caused by different closure temperature was analyzed. With the aided platform Midas/Civil, comparative analysis of three different closure temperatures was carried on to determine the reasonable one. It is concluded that different closure temperature has important influence on girder stress, but the most dangerous stress combination of girder under serviceability limit state could be taken as remain the same. Though different closure temperature has little influence on the displacement of girder, it is recommended to pay highly attention to the influence on the mid-span vertical displacement when doing the formwork. And finally this article puts forward some effective measures to prevent and reduce the temperature effect.

Static and Dynamic Behavior of the High-Pier and Long-Span Continuous Rigid Frame Bridge

2013 ◽  
Vol 639-640 ◽  
pp. 474-480 ◽  
Author(s):  
Jian Xin Liu ◽  
Ying Wang ◽  
Mei Chun Zhu ◽  
Zhi Hong Zhang ◽  
Xin Hua Zhang ◽  
...  
Keyword(s):  
Time History ◽  
Response Analysis ◽  
Bridge Structure ◽  
The Finite Element Method ◽  
Long Span ◽  
Continuous Rigid Frame Bridge ◽  
Rigid Frame ◽  
Internal Forces ◽  
High Pier ◽  
Rigid Frame Bridge

A structure model of three-span continuous rigid frame bridge was constructed based on the finite element method. Firstly, the static performances were obtained. Secondly, the modal analysis was performed to get the natural frequencies and periods. The dynamic characteristics of the bridge structure were summarized, and some improvement guidelines are suggested to overcome the shortcoming for the bridge structure. Then, seismic response analysis was carried out based on the EL-Centro wave. The input excitations adopted the combination of vertical wave plus longitudinal wave, or vertical wave plus lateral wave, or the combination of three directions. Based on the three excitation cases, some useful results were obtained, which include internal forces, displacements, accelerations time-history curves of the critical sections for the bridge structure. And some comments about the time-history curves are given. At last, some helpful conclusions are drawn based on the calculation and analysis above. The calculation methods and results in this paper can provide some referenced information for the engineering design.

Simulation Analysis on Construction of Liangjiang Great Bridge

2014 ◽  
Vol 587-589 ◽  
pp. 1698-1702
Author(s):  
Min Si ◽  
Shi Xiang Bie ◽  
Bao Lai Li ◽  
Xiao Chun Fan
Keyword(s):  
Prestressed Concrete ◽  
Simulation Analysis ◽  
Bridge Construction ◽  
Long Span ◽  
Continuous Rigid Frame Bridge ◽  
Rigid Frame ◽  
Initial Camber ◽  
High Pier ◽  
Cantilever Construction ◽  
Rigid Frame Bridge

Liangjiang Great Bridge is the prestressed concrete continuous rigid frame bridge with high pier and long-span. It adopts the segmented cantilever construction method. The process of its construction is the key to the construction control simulation analysis. In this paper, based on the characteristics of the bridge construction, finite element method is used to establish the simulation model. Cantilever construction stages and closure stages of bridge are simulated and analyzed. The structure deflection diagrams in the each section construction and the later construction considering the creep and shrinkage of concrete are obtained. The initial camber of each segment is given in the construction. The stress characteristics of key section are analyzed in the construction process. It provides a basis for monitoring and on-site construction of bridge and the reference for similar bridge construction.

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