Response control of cable-stayed arch bridge using modified hanger system

Farahmand‐Tabar, Salar; Barghian, Majid

doi:10.1177/1077546320921635

Cited by 18 publications

(5 citation statements)

References 43 publications

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“…For a long span, the bridge needs to have supports in the middle, called a continuous beam bridge. The performance of the bridge is increased by providing carbon cables, and strips, prestressed concrete, composite box girder, and fiberglass reinforced foam concrete [6][7][8][9][10][11] Arch bridge use curve structures to provide more resistance to bending forces. Instead of pushing straight down, the weight of an arch bridge is carried outward along the curve of the arch to the supports at each end [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Comparative Study on Performance of Beam and Arch Bridge Subjected to Uniformly Distributed Load

Rehumaan

2022

Int. J. Archit. Eng. Technol.

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In this paper, an attempt has been made to study the behavior of beam and arch bridges subjected to static uniformly distributed loads. The target audience of this research paper is Architecture students because they would like to visualize the structural concepts for better understanding with minimal calculation. For this reason, a static load test was conducted on three types of beam bridges and on three types of arch bridges. The performance of the arch bridge is studied by changing the type of beam, and the results are compared with the beam bridge. Based on the test results, it is found that the performance of glued beam bridges is recommended for less span than arch bridges.

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Section: Introductionmentioning

confidence: 99%

Comparative Study on Performance of Beam and Arch Bridge Subjected to Uniformly Distributed Load

Rehumaan

2022

Int. J. Archit. Eng. Technol.

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“…Per (1987) proposed a network arch bridge and it saves half the weight of steel compared with similar spans of conventional steel bridges. Farahmand and Barghian (2020aBarghian ( , 2020b proposed a cable-stayed arch bridge with a hanger system and the stiffness and human comfort level for the bridge were well improved by modifying the hanger system.…”

Section: Introductionmentioning

confidence: 99%

Structural form and experimental research of truss arch bridge with multi-point elastic constraints

Qiu

Xie

Pang

et al. 2021

Advances in Structural Engineering

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With the increase of the arch bridge span, the mechanical properties of arch bridges will decrease rapidly. In order to solve this problem, triangular net is set between the arch rib and girder to form a kind of truss arch bridge in which arch rib acts as top chord, girder acts as lower chord, triangular net acts as web member, and hangers provide elastic restrains at several points. The triangle stability of the truss can improve linear stiffness of arch rib and girder, which will thus improve the mechanical properties of arch bridges. A test bridge with a span of 50 m was built to prove the superiority of the truss arch bridge with multi-point elastic constraints (MTAB). Structural stresses and displacements were obtained through dead load experiments, and the mechanical properties of the structure were calculated through the finite element (FE) software. It is turned out that, compared with the conventional through arch bridge (CTAB), the mechanical performance of the MTAB is greatly improved. The test values of structural stresses and displacements match calculation values well. Moreover, with the same steel consumption, the more layers of the triangular net, the better the mechanical properties of the structure.

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“…ese methods can enhance the torsional stiffness of the girder, thus improving the stability and safety of the structure. Also, by changing the form of cable frames [17,18] and adjusting vertical interval and numbers of cable frames [19], some scholars have improved the stiffness of the structure, reduced vibration, and strengthened the dynamic behavior of the bridge. However, these methods increase the stability of the bridge structure merely at a higher cost and do not really solve the problem that the torsional stiffness simulation of the girder is distorted when the bridge structure is simulated by the IBEM.…”

Section: Introductionmentioning

confidence: 99%

Torsional Stiffness Correction of the Split‐Type Triple‐Box Steel Box Girder Based on Refined Simulation

Tang

Yue

et al. 2021

Advances in Civil Engineering

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Split-type steel box girders are widely used in long-span bridges because of their good wind-resistance performance. In the design stage, a simple finite element model is usually established based on the beam element for wind-resistance design. However, since the irregular cross-beams and diaphragms in the split steel box girder cannot be virtually established, the stiffness of the girder will be underestimated. To improve the accuracy in simulating stiffness of the split-type triple-box steel box girder (STSBG) with the beam element model (BEM), a correction is made to the initial beam element model (IBEM) based on the result of a more refined finite element model. ANSYS is adopted to make a refined model (RM) of a bridge with STSBG as its girder and to calculate its aerostatic responses and dynamic characteristics in 3 typical construction states and 1 finished state. With the reference value, an objective function of the overall residual sum of squares is constructed for the torsion angle of the girder and the frequency of the bridge. Then, the beam element is used for conventional modelling of the bridge, and artificial bee colony (ABC) algorithm is adopted for the optimization and correction of structure parameters of the BEM of the girder. Finally, static and dynamic characteristics of the IBEM and the corrected beam element model (CBEM) are compared with values of the corresponding RM to evaluate the validity of the correction of the model. The results show that the aerostatic responses and dynamic characteristics of the CBEM are close to calculated values of the RM. In more detail, the relative error between the torsion angle of the girder in the middle span of the BEM and the corresponding reference value in the finished state is decreased from +61.71% to +4.94%, and the relative error of torsional fundamental frequency is decreased from −17.43% to +3.66%. According to the calculated value of the RM, ABC algorithm would satisfactorily improve the accuracy in simulating torsional stiffness of the STSBG with the IBEM. This research is expected to provide reference for beam element modelling, which is conducive to accurately simulating torsional stiffness of the STSBG.

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Response control of cable-stayed arch bridge using modified hanger system

Cited by 18 publications

References 43 publications

Comparative Study on Performance of Beam and Arch Bridge Subjected to Uniformly Distributed Load

Comparative Study on Performance of Beam and Arch Bridge Subjected to Uniformly Distributed Load

Structural form and experimental research of truss arch bridge with multi-point elastic constraints

Torsional Stiffness Correction of the Split‐Type Triple‐Box Steel Box Girder Based on Refined Simulation

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