scholarly journals Strut-and-tie computer modelling of reinforced concrete bridge portal frames

2002 ◽  
Vol 35 (3) ◽  
pp. 165-189 ◽  
Author(s):  
N. H. T. To ◽  
J.M. Ingham ◽  
S. Sritharan
Keyword(s):  
Experimental Data ◽  
Reinforced Concrete ◽  
Computer Program ◽  
Computer Modelling ◽  
Concrete Bridge ◽  
Tension Stiffening ◽  
Reinforced Concrete Bridge ◽  
Strut And Tie ◽  
Force Displacement ◽  
Stiffening Effect

Nonlinear inelastic force-displacement response envelopes of full-scale reinforced concrete bridge portal frames are predicted in this paper by representing the frame using strut-and-tie models. The nonlinear strut-and-tie analyses, which included the tension stiffening effect, were performed using the computer program Drain-2DX. Strut-and-tie analytical results were found to correlate satisfactorily with the experimental data and to provide superior prediction to that generated using conventional planar frame models.

Study of Reinforced Concrete Bridge Column Ductility Based on VB

2013 ◽  
Vol 368-370 ◽  
pp. 1410-1414
Author(s):  
Shao Yu Deng ◽  
Rong Zong
Keyword(s):  
Experimental Data ◽  
Reinforced Concrete ◽  
Bridge Columns ◽  
Bridge Piers ◽  
Concrete Bridge ◽  
Reinforced Concrete Bridge ◽  
Test Operation ◽  
Application Procedure ◽  
Bridge Column

Because of the complexity of the ductility of reinforced concrete bridge columns test operation, the paper compiles VB application procedure to study the anti-earthquake ductility of reinforced concrete bridge columns.The experimental data in the test of concrete bridge piers and the caculation value of VB are compared, which agree very well. Therefore,feasibility of VB procedure to analysis the ductility of bridge columns is proved.

scholarly journals Direct Strut-and-Tie Model for Reinforced Concrete Bridge Pier Cap

2016 ◽  
Vol 12 (2) ◽  
pp. 1-8 ◽  
Author(s):  
Vinayak Hemant Kumar ◽  
N.A.K Sivaa Senthil ◽  
T V Pradeep Kumar
Keyword(s):  
Shear Strength ◽  
Reinforced Concrete ◽  
Stress Distribution ◽  
Bridge Pier ◽  
Concrete Bridge ◽  
Ultimate Shear Strength ◽  
Softening Effect ◽  
Reinforced Concrete Bridge ◽  
Strut And Tie ◽  
Strut And Tie Model

Abstract A simple and direct Strut-and-Tie Model (STM) is proposed here to predict the ultimate shear strength of the reinforced concrete bridge pier cap for shear span to depth ratio of 0.4 to 2.4. The model is based on the Kupfer-Gerstle Biaxial Compression-Tension failure criterion which includes the concrete softening effect produced by the presence of transverse tensile stress. The earlier models consider the stress distribution factor for the varied stress distribution across the section by assuming it as linear function which is derived by satisfying equilibrium conditions. In this study the principal stresses have been evaluated by satisfying the compatibility condition at the time of impending failure which has been accounted for the effective area of concrete resisting tension. Also the softening effect has been included by using the formula for tensile strength of cracked concrete proposed by Belarbi and Hsu. The proposed model has been validated with 43 experimental results by author and from literature which confirm the coherency and conservativeness of the predicted results. The parametric study on ultimate shear strength is done so as to infer the relation between various abstract quantities such as compressive strain, shear capacity, span depth ratio and other material properties and get a deeper insight into the behavior of the Pier cap. Thus this paper tries to extend the practical application of Strut-and-Tie Model for reinforced concrete bridge pier cap in understanding the actual behavior of the structure on various dimensional and material parameters.

Degrading Bouc–Wen Model Parameters Identification Under Cyclic Load

2017 ◽  
Vol 8 (2) ◽  
pp. 60-81 ◽  
Author(s):  
G. C. Marano ◽  
M. Pelliciari ◽  
T. Cuoghi ◽  
B. Briseghella ◽  
D. Lavorato ◽  
...  
Keyword(s):  
Experimental Data ◽  
Reinforced Concrete ◽  
Structural Engineering ◽  
Bridge Pier ◽  
Computational Time ◽  
Model Parameters ◽  
Concrete Bridge ◽  
Computational Point ◽  
Reinforced Concrete Bridge ◽  
Wide Range

The purpose of this article is to describe the Bouc–Wen model of hysteresis for structural engineering which is used to describe a wide range of nonlinear hysteretic systems, as a consequence of its capability to produce a variety of hysteretic patterns. This article focuses on the application of the Bouc–Wen model to predict the hysteretic behaviour of reinforced concrete bridge piers. The purpose is to identify the optimal values of the parameters so that the output of the model matches as well as possible the experimental data. Two repaired, retrofitted and reinforced concrete bridge pier specimens (in a 1:6 scale of a real bridge pier) are tested in a laboratory and used for experiments in this article. An identification of Bouc–Wen model's parameters is performed using the force–displacement experimental data obtained after cyclic loading tests on these two specimens. The original model involves many parameters and complex pinching and degrading functions. This makes the identification solution unmanageable and with numerical problems. Furthermore, from a computational point of view, the identification takes too much time. The novelty of this work is the proposal of a simplification of the model allowed by simpler pinching and degrading functions and the reduction of the number of parameters. The latter innovation is effective in reducing computational efforts and is performed after a deep study of the mechanical effects of each parameter on the pier response. This simplified model is implemented in a MATLAB code and the numerical results are well fit to the experimental results and are reliable in terms of manageability, stability, and computational time.

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