Damage analysis of small box girder bridges under car explosion

Zhu, Zhao; Li, Yuan; Ma, Chao

doi:10.1016/j.engfailanal.2020.105104

Cited by 16 publications

(3 citation statements)

References 27 publications

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“…An assessment model for determining the priority strategy for bridge maintenance is described in [4]. The publications [5][6] present the results of the analysis of damage to bridges with box girders and risk assessment for the bridge structures using a fuzzy structure in a car explosion.…”

Section: Bridge Beam Testing 41 Beam Testing Preparationmentioning

confidence: 99%

Inspection and Preparation for Testing of the Road Overpass of the Almaty-Kapshagai Highway after the Vehicular Impacts

Jalairov¹,

Kumar²,

Nuruldaeva³

et al. 2022

Communications

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The 33.0 m long reinforced concrete bridge beams of the overpass superstructure after vehicular impacts were taken as a research object. The overpass consists of 14 beams, six of which were repaired by restoring the widened lower part with EMACO FAST TIXO, manufactured by BASF. The remaining 8 beams were completely dismantled and replaced with new ones. The new beams have been fully tested for the perception of vehicular loads. The fully reconstructed span structure showed compliance with the design loads of A14, NK-120 and NK-180 based on test results.

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Section: Bridge Beam Testing 41 Beam Testing Preparationmentioning

confidence: 99%

Inspection and Preparation for Testing of the Road Overpass of the Almaty-Kapshagai Highway after the Vehicular Impacts

Jalairov¹,

Kumar²,

Nuruldaeva³

et al. 2022

Communications

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show abstract

“…Li et al 4 have investigated the dynamic response, damage mechanism, and residual bearing capacity of concrete‐filled steel tubular columns subjected to near and contact explosions and established a formula for calculating the residual bearing capacity of concrete‐filled steel tubular columns after explosions. In a study on the explosion resistance of upper beam and plate structures of bridges, Zhu et al 5 have studied the explosion failure mode and structural dynamic response of reinforced concrete box girders in combination with explosion tests and quantitatively evaluated the damage process of box girders subjected to vehicle explosions. Liao et al 6 studied the explosive dynamic performance of UHDC(Ultra‐high ductile concrete)–UHPC (ultra‐high‐performance concrete) panel (i.e., hybrid panel) by using numerical simulation method.…”

Section: Introductionmentioning

confidence: 99%

Experimental study on protection of prestressed concrete box girder under vehicle explosion of bridge deck

Sun,

Liu

2024

Structural Concrete

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This paper presents a study on the explosion protection of prestressed concrete box girder, which is a commonly used in concrete bridges. The explosion protection tests of four prestressed box beams were designed with 1:5 scale. In order to evaluate the explosion performance of different protective layers, steel plate, ultra‐high‐performance concrete (UHPC) layer, and composite protective layer were used to protect the box girder. The experimental results revealed that under the effect of deck explosion, local penetrating failure occurred in the top plate of the box girder, which exhibited characteristics of punching failure. The web and bottom plate of the box girder as a whole exhibited bending characteristic. Compared with the unprotected box girder, the damage of the top plate of the protected box girder was less severe, whereas the damage of the bottom plate was greater. In working conditions 2–4, the UHPC protective box girder suffered less damage to the top plate, whereas the other protective box girders suffered more. The explosion dynamic responses of the box girder were compared, and the influences of different protective layers on the explosion dynamic response of box girder were studied. Based on the box girder damage, the protective efficiency of each protective layer under near‐explosion was studied. Based on the explosion tests, three‐dimensional numerical analysis model of box girder explosion was established. The accuracy of the numerical simulations of the box girder explosion were verified by comparing with the experimental failure data. Through the numerical results, the explosive energy dissipation capacity of different protective materials was compared and analyzed. Finally, based on the dynamic response of the box girder under different working conditions, the sensitivity of the protective layer to the dynamic responses of the box girder were studied. The analysis showed that the UHPC layer was sensitive to the change of prestress and explosion damage area of the box girder but had little influence on the rebars stress and the overall response of the box girder.

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“…Thus, these factors must be taken into consideration for reliability calculations of box girder bridges [1,3,4,5,7,9,[11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Some analyzes on box girders bridges - literature review

Velniciuc

Bujoreanu

2022

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

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Studies on box girders bridges that treats domains such as: its seismic response, fire resistance of the structure, effect of web inclination of the bridge, shear force distribution in webs of the bridge, loading conditions for the bridge with dead load and live load were reviewed and concluded. Our paper aims to describe different research from the dedicated literature using software such as Ansys, Midas, CSi Bridge with FEM (finite element method) and to highlight the points where the maximum stress values are found. This will help us in the future to compare these results obtained by experts with new analyzes that we want to accomplish regarding the efficacy and reliability of the box girder structure. The main motivation to study this domain is represented by the previous experience and knowledge and to detect new dangerous sections in this type of structure. By counteracting the dangerous sections, we can improve the reliability degree and efficiency of the box girder bridge structure.

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Damage analysis of small box girder bridges under car explosion

Cited by 16 publications

References 27 publications

Inspection and Preparation for Testing of the Road Overpass of the Almaty-Kapshagai Highway after the Vehicular Impacts

Inspection and Preparation for Testing of the Road Overpass of the Almaty-Kapshagai Highway after the Vehicular Impacts

Experimental study on protection of prestressed concrete box girder under vehicle explosion of bridge deck

Some analyzes on box girders bridges - literature review

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