Failure mechanism and design method for box girder bridge with interior hinged supports under eccentrically vertical loads

Shi, Xiaohu; Zhou, Zijie; Ma, Haiying; Emadi, Seyyedbehrad; Cao, Zhen

doi:10.1016/j.istruc.2022.12.101

Cited by 5 publications

(6 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In ANSYS/LS-DYNA, a gradient temperature was applied to nodes along the height of the girder. This involved using a gradient temperature distribution model (Figure 9) and recursive temperatures based on Equation (9). Two types of continuous box girder bridges, one with 3 × 25 m dimensions and the other with 5 × 25 m dimensions, were selected.…”

Section: Gradient Temperature Effectsmentioning

confidence: 99%

“…Field investigations have revealed four common characteristics of bridges involved in overturning incidents [16][17][18]: (1) continuous girder bridges, generally with a single bearing at each mid-pier; (2) superstructures made of integral box-section girders; (3) straight girders or horizontally curved girders with a large curvature radius; and (4) overloaded vehicles moving or staying on the same deck side. The anti-overturning theory of the single-column pier bridges has evolved from rigid body rotation theory to deformed body and rigid body rotation superposition theory [9,19,20]. Xiong [21] established a detailed 3D bridge model including the superstructure, bearings, and piers to accurately describe the structural behavior under different mechanical conditions before the final collapse, and further explored the effect of different single-column pier bridge arrangements on overturning performance.…”

Section: Introductionmentioning

confidence: 99%

“…The key aspect of the FSO lies in determining the critical state of overturning and selecting the position of the overturning axis [15,24]. However, researchers discovered that the FSO of several overturned multi-span bridges exceeds one when based on a rigid overturning axis, indicating its unsuitability for multi-span bridges [9]. Li [25] proposed a modified overturning axis for the FSO considering the effects of deformed body rotation and rigid body rotation.…”

Section: Introductionmentioning

confidence: 99%

“…Compared to double-column pier bridges, single-column pier bridges generally have poor anti-overturning capacity due to their single-support structural form in the transverse direction [ 4 , 5 ]. Over the past decade, several instances of an overloaded-induced overturning of the single-column pier bridge have occurred worldwide, particularly in China, resulting in significant casualties and economic losses [ 6 , 7 , 8 , 9 ]. Bridge overturning accidents are primarily caused by overloaded vehicles [ 5 ].…”

Section: Introductionmentioning

confidence: 99%

“…FSO is defined as the ratio of the anti-overturning moment caused by dead loads to the overturning moment caused by vehicles. A girder will overturn if the FSO is below one [ 9 ]. The key aspect of the FSO lies in determining the critical state of overturning and selecting the position of the overturning axis [ 15 , 24 ].…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Failure Analysis for Overall Overturning of Concrete Single-Column Pier Bridges Induced by Temperature and Overloaded Vehicles

Wang,

Zhou,

Xue

et al. 2024

Materials

View full text Add to dashboard Cite

Several overloaded-induced overturning incidents of girder bridges with single-column piers have occurred in recent years, resulting in significant casualties and economic losses. Temperature, in addition to overloading, may also play a role in exacerbating bridge overturning. To investigate the association between temperature and bridge overturning, an explicit finite element model (EFEM) of a three-span concrete curved continuous bridge considering nonlinearities was developed to simulate overall collapse. The effects of uniform and gradient temperatures on the overall overturning stability of curved and straight bridges were evaluated based on the EFEMs. Furthermore, the temperature–bridge coupling model and temperature–vehicle–bridge coupling model were utilized to examine how gradient temperature influences bridge overturning. The results show that the overall overturning collapse of a bridge follows four stages: stabilization, transition, risk and overturning. Variations in uniform temperature from −30 °C to 60 °C had a negligible effect on the ultimate vehicle weight for bridge overturning, with a variation of less than 1%. As the gradient temperature ranged from −30 °C to 60 °C, curved bridges show less than a 2% variation in ultimate vehicle weights, compared to a range of −6.1% to 11.7% for straight bridges. The torsion caused by positive gradient temperature in curved bridges can exacerbate bridge overturning, while negative gradient temperature in straight bridges can lead the girder to ‘upward warping’, facilitating girder separation from bearings. Monitoring the girder rotation angle and vertical reaction force of bearings can serve as important indicators for comparing the stability of bridges.

show abstract

Section: Gradient Temperature Effectsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Failure Analysis for Overall Overturning of Concrete Single-Column Pier Bridges Induced by Temperature and Overloaded Vehicles

Wang,

Zhou,

Xue

et al. 2024

Materials

View full text Add to dashboard Cite

show abstract

Response characteristics of curved girder bridges with single-column piers during the whole overturning process: Experimental and numerical study

Liu,

Wang,

Mao

et al. 2024

Structures

View full text Add to dashboard Cite

Theoretical and experimental comparison between straight and curved continuous box girders

Dawood,

Abdul-Razzaq,

Abdulsahib

2024

Open Engineering

View full text Add to dashboard Cite

The curvature causes a variation in the deflection of the outer and inner sides. The effect of curvature was investigated by casting and testing two specimens with the same section – one straight and the other horizontally curved continuous box girder. ABAQUS software was used to numerically model the box girder in order to verify the model and investigate additional parameters. Numerical modeling is successful with less effort, cost, and time because good results are obtained. The effect of the span-to-depth ratio, the compressive strength of concrete, and the percentage of stirrup steel reinforcement was studied numerically. Increasing the height, compressive strength, and percentage of stirrup steel led to a significant increase in load capacity and stiffness. The load capacity in the curved specimen decreased by 11% compared to the straight one due to the effect of torsional moments. A mathematical model was proposed based on the theory of strut-and-tie modeling (STM), where the span was divided into several panels, the effect of torsion was added, and then the results were compared with the traditional sectional method according to ACI and CEB-FIB. For the straight specimen, the sectional ACI, CEB-FIB, and STM methods were used, which gave theoretical results less than the experimental by 31, 48 and 13%, respectively. For the curved specimen, to get closer to reality, the sectional and STM methods were modified by adding the effect of torsion, and the results were less than the experimental tests by 43, 61 and 22%, respectively.

show abstract

Failure mechanism and design method for box girder bridge with interior hinged supports under eccentrically vertical loads

Cited by 5 publications

References 15 publications

Failure Analysis for Overall Overturning of Concrete Single-Column Pier Bridges Induced by Temperature and Overloaded Vehicles

Failure Analysis for Overall Overturning of Concrete Single-Column Pier Bridges Induced by Temperature and Overloaded Vehicles

Response characteristics of curved girder bridges with single-column piers during the whole overturning process: Experimental and numerical study

Theoretical and experimental comparison between straight and curved continuous box girders

Contact Info

Product

Resources

About