Resistance mechanism and reliability analysis of reinforced concrete columns subjected to lateral impact

Zhao, Wuchao; Jia, Qingxuan

doi:10.1016/j.ijimpeng.2019.103413

Cited by 43 publications

(11 citation statements)

References 41 publications

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“…behavior of concrete structures under explosion and impact loads, including MAT_72R3, MAT_84, MAT_145, MAT_159. Several studies [27][28][29][30][31] have confirmed MAT_159 is applicable to the response analysis of concrete structures under low-velocity impact. Therefore, *MAT_CS CM_CONCRETE(MAT_159), a continuous smooth cap model, was used to model the properties of concrete material and simulate its elastoplastic deformation under low-velocity impact with the consideration of strain rate effect in LS-DYNA.…”

Section: Constitutive Relationship Of Materialsmentioning

confidence: 99%

Damage mechanism and damage evaluation of PC box girder bridge subjected to overheight vehicle impact

Yuan

Zhao

et al. 2023

Structural Concrete

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Accidental collisions from overheight vehicles often result in significant damage of bridges. To ensure the safety of the bridge structure, it is essential to develop a method to evaluate the damage caused by these impact loadings. This study aims to investigate the damage mechanism of a prestressed concrete (PC) box girder bridge subjected to overheight vehicle impact using the finite element analysis method. Parametric analyses were performed to study the effects of various factors on the impact force and deformation performance of the bridge. In addition, a damage assessment formula, based on the vertical residual bearing capacity, is proposed to evaluate the damage state of the impacted PC box girder. A mass–velocity (m–v) curve is developed to characterize the damage levels of the impacted PC girder under different vehicle velocity and mass conditions. Then, a theoretical equation for predicting the maximum impact force during the vehicle‐bridge collision is developed. The numerical analysis results show that vehicle‐related parameters have a significant influence on both impact force and local damage of the PC box girder bridge. The proposed mass–velocity (m–v) curve can be used to evaluate the damage state of the PC box girder by relating the performance levels of the girder to each damage index. Moreover, the predicted maximum impact force can be used as an important index to assess the extent of the local damage of the PC box girder.

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Section: Constitutive Relationship Of Materialsmentioning

confidence: 99%

Damage mechanism and damage evaluation of PC box girder bridge subjected to overheight vehicle impact

Yuan

Zhao

et al. 2023

Structural Concrete

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“…Many comprehensive experimental and analytical studies, where the impact behavior of the concrete or reinforced concrete beam, column, and slab structural elements is investigated, exist in the literature 4–23 . The impact behavior of beams manufactured using fiber reinforced concrete and beams strengthened with fiber‐reinforced polymer strips have also been investigated 24–33 .…”

Section: Introductionmentioning

confidence: 99%

“…[1][2][3] Many comprehensive experimental and analytical studies, where the impact behavior of the concrete or reinforced concrete beam, column, and slab structural elements is investigated, exist in the literature. [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23] The impact behavior of beams manufactured using fiber reinforced concrete and beams strengthened with fiber-reinforced polymer strips have also been investigated. [24][25][26][27][28][29][30][31][32][33] Furthermore, under the effect of impulsive loads, the dynamic response and failure modes of ultra-high-performance fiber-reinforced concrete columns (UHPFRC), precast segmental columns, RC columns strengthened with fiber-reinforced polymer (FRP) composites, and concrete-filled steel tube (CFST) columns were investigated.…”

mentioning

confidence: 99%

Investigation of impact behavior of reinforced concrete beam to column connection strengthened with carbon fiber‐reinforced polymer strips

Kaya

Aras

Yılmaz

et al. 2021

Structural Concrete

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Reinforced concrete (RC) members may expose to impulsive dynamic loads due to the reasons such as the explosions occurring in the interior or exterior part of them, rockfall, the vehicle crash to the bridges, the collision of masses with the effects of floods and landslide. Many studies have investigated the effects of impulsive dynamic loads on the beam, column, and slab RC structural elements have been investigated in the literature. However, the authors have not encountered any study focused on the impact behavior of beam to column connections of the frames constructing the bearing system of reinforced concrete structures. Therefore, an experimental study has been planned to investigate RC beam impact behavior to column connections strengthened with carbon fiber‐reinforced polymer (CFRP) strips. The concrete compressive strength, shear reinforcement spacing, CFRP strip spacing, and input impact energy applied to test specimens were taken as experimental variables. The time histories of impact load acting on test specimens, accelerations, displacements, and the strains measured from CFRP strips have been recorded in experiments. The experimental variables' effect on dynamic responses of RC beam to column connections strengthened with CFRP strips subjected to impact load has been interpreted in detail. The study's scope and improved numerical analysis procedure have also been introduced to verify experimental results. Good agreement between numerical and experimental results demonstrated that the presented numerical procedures could be safely used for evaluation of impact behavior of RC beam to column connections strengthened with CFRP strips.

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“…The current approaches in blast design guidelines (e.g., [21]) widely use the generalized SDOF approximation. The literature also includes more nuanced representations of structural systems based on the beam theory [22], multi-degrees-of-freedom (MDOF), and Finite Element (FE) models [23][24][25][26][27]. The increasing computational capabilities and advances in numerical techniques have also enabled the seamless integration of blast load models, derived from first principles, with high-fidelity computational models of structural dynamics (see [28] for a review.…”

Section: Introductionmentioning

confidence: 99%

Physics-based probabilistic demand model and reliability analysis for reinforced concrete beams under blast loads

Stochino¹,

Tabandeh²,

Gardoni³

et al. 2021

Engineering Structures

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Resistance mechanism and reliability analysis of reinforced concrete columns subjected to lateral impact

Cited by 43 publications

References 41 publications

Damage mechanism and damage evaluation of PC box girder bridge subjected to overheight vehicle impact

Damage mechanism and damage evaluation of PC box girder bridge subjected to overheight vehicle impact

Investigation of impact behavior of reinforced concrete beam to column connection strengthened with carbon fiber‐reinforced polymer strips

Physics-based probabilistic demand model and reliability analysis for reinforced concrete beams under blast loads

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