Refined Finite Element Analysis of Crack Causes in SRC Arch Rib Bridges considering Multiple Factors

Yu, Mengsheng; Deng, Nianchun; Chen, Qifeng; Hao, Tianzhi

doi:10.1155/2018/2690951

Cited by 2 publications

(1 citation statement)

References 8 publications

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“…The first category focuses on improving the span diameter of arch bridges by optimizing the structural form [4][5][6]. For example, Xie et al [7] proposed a new bridge structural system known as the medium-bearing cable arch bridge; here, the main span and side spans of suspension bridges are set up in the arch rib and the main cables are anchored to the arch foot of the side arches, and the structural mechanical performance is improved by adjusting the yaw-to-span ratio.…”

Section: Introductionmentioning

confidence: 99%

A Study on the Ultimate Span of a Concrete-Filled Steel Tube Arch Bridge

Wu,

Wang,

Fan

et al. 2024

Buildings

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In order to study the ultimate span of a concrete-filled steel tube (CFST) arch bridge, taking the structural strength, stiffness, and stability as the limiting conditions, the finite element analysis method is adopted to carry out research on the influence law of a single parameter of the pipe diameter, wall thickness, and cross-section height on the ultimate span of the arch axial shape. The result is used as a sample point to determine the ultimate span of the CFST arch bridge under multifactor coupling based on the response surface method. The finite element method is used to check the strength, stiffness, stability, number of segments and maximum lifting weight, steel content rate, and steel pipe concrete constraint effect coefficient of the CFST arch bridge under the ultimate span diameter. The results show that, when analyzed using a single parameter, the ultimate span diameter of the CFST arch bridge increases with the increase in the steel pipe diameter and the cross-section height, and then decreases. Moreover, it increases with the increase in the wall thickness of the steel pipe, and the CFST arch bridge reaches the ultimate span with the increase in the steel pipe wall thickness. When the pipe diameter is 1.38 m, the CFST arch bridge reaches the ultimate span; according to a multi-parameter coupling analysis, when the pipe diameter is 1.49 m, wall thickness is 37 mm, and cross-section height is 17 m, the CFST arch bridge reaches the ultimate span of 821 m, which meets all of the limiting conditions, and, at this point, the arch axial coefficient is 1.2. The results of the finite element calculation show that the structural strength, prior to the stiffness, stability, and other limitations, just reaches the critical value of the limiting conditions.

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Section: Introductionmentioning

confidence: 99%

A Study on the Ultimate Span of a Concrete-Filled Steel Tube Arch Bridge

Wu,

Wang,

Fan

et al. 2024

Buildings

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The Influence of Arch Flexibility On The Floor Deck Structural Characteristics For Composite Arch Steel Bridge

Wali

Muteb

Hadi

2021

IOP Conf. Ser.: Mater. Sci. Eng.

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This paper presents an optimizing design for the floor deck for the composite arch steel bridge depending on the arch flexibility (the bridge’s main component). The design is based on second-order effects using nonlinear p-delta analysis. Many variables are considered in the parametric study, which is the arch’s in-plane flexibility, the out-of-plane flexibility of the arch, and the number and stiffness of the lateral bracing between the twin arches. The design has been done by graphical design software SAP2000 and based on AISC and AASHTO specifications. A numerical example is studded herein for the new proposed bridge of Batta in Al-Hilla city in Iraq which crossover Al-Hilla river for a width of 108m from bank to bank, the bridge has an overall width of 18 m including two lane-two way of 15.6 m width and walkways of 1.2 m on both sides. This study’s main objectives are the number and size of floor beams, deck thickness, and hence the overall weight of the bridge will be minimum, the goal of design is to select the lightest and most economical and practical composite floor decks. It has been concluded that the deflection decreases with the increase in the number of the floor beam, and the best result was the case of the distance between the floor beam is 1.95 m with a deflection of 71.95 mm, meaning that the flexibility is less as the number of floor beam increases. As for the change of the arch’s cross-section, the best result of the lesser girder deflection was in the case that the arch section with dimensions (0.8 x1.2x0.035) m. This indicates that the greater the moment of inertia, which leads to less deflection for cross over the main girder.

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Refined Finite Element Analysis of Crack Causes in SRC Arch Rib Bridges considering Multiple Factors

Cited by 2 publications

References 8 publications

A Study on the Ultimate Span of a Concrete-Filled Steel Tube Arch Bridge

A Study on the Ultimate Span of a Concrete-Filled Steel Tube Arch Bridge

The Influence of Arch Flexibility On The Floor Deck Structural Characteristics For Composite Arch Steel Bridge

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