Reliability analyses of RC bridge piers subjected to barge impact using efficient models

Wang, W.; Morgenthal, Guido

doi:10.1016/j.engstruct.2018.03.089

Cited by 37 publications

(5 citation statements)

References 16 publications

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“…The collision cases between ships and bridges (Chen et al, 2019; Kameshwar and Padgett, 2018; Moe et al, 2017a, 2017b; Wang and Morgenthal, 2017, 2018a) are studied in many articles in recent years, but the studies on the collision cases between ships and anti-collision structures are not common. An innovative foam-filled lattice composite bumper system (Zhu et al, 2018) shows the properties of good energy absorbing and highly designable and performs an obvious advantage in the peak impact force and duration.…”

Section: Introductionmentioning

confidence: 99%

Initial response mechanism and local contact stiffness analysis of the floating two-stage buffer collision-prevention system under ship colliding

Lü

Chen

Gao

et al. 2021

Advances in Structural Engineering

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A floating two-stage buffer collision-prevention system (FTBCPS) has been proposed to reduce the impact loads on the bridge pier in this paper. The anti-collision process can be mainly divided into two stages. First, reduce the ship velocity and change the ship initial moving direction with the stretching and fracture of the polyester ropes. Second, consume the ship kinetic energy with the huge damage and deformation of the FTBCPS and the ship. The main feature of the FTBCPS lies in the first stage and most of the ship kinetic energy can be dissipated before the ship directly impacts on the bridge pier. The contact stiffness value between the ship and the FTBCPS can be a significant factor in the first stage and the calculation method of it is the focus of this paper. The contact force, the internal force and the general equation of motion have been given in the first part. The structure model of the ship and the FTBCPS are then established in the ANSYS Workbench. After that, 38 typical load cases of the ship impacting on the FTBCPS are conducted in LS-DYNA. The reduction processes of the ship kinetic energy and the ship velocity in different load cases have been investigated. It can be summarized that the impact angle and the ship initial velocity are the main factors in the energy and velocity dissipation process. Moreover, the local impact force-depth curves have also been studied and the impact angle is found to be the only significant factor on the ship impact process. Next, the impact force-depth curves with different impact angles are fitted and the contact stiffness values are accordingly calculated. Finally, the impact depth range, the validity of the local simulation results and the consistency of the fitted stiffness value are verified respectively, demonstrating that the fitted stiffness values are applicable in the global analysis.

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Section: Introductionmentioning

confidence: 99%

Initial response mechanism and local contact stiffness analysis of the floating two-stage buffer collision-prevention system under ship colliding

Lü

Chen

Gao

et al. 2021

Advances in Structural Engineering

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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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“…Several researchers conducted time-dependent reliability analysis for evaluating existing or rehabilitated bridges [154][155][156][157][158][159][160]. For example, using MC simulation, Zhu et al [154] presented a probabilistic method for evaluating time-dependent reliability of reinforced-concrete bridge components to predict residual capacity after subsequent rehabilitation.…”

Section: Bridge Design and Managementmentioning

confidence: 99%

“…The proposed approach can be used in the design optimization, speed control, and making rational maintenance/repair strategies for such bridges. Wang and Morgenthal [157] conducted a reliability analysis of reinforced concrete bridge piers subjected to barge impact that considered the uncertainties involved in barge mass, impact velocity, oblique impact angle, water elevation, and material properties. A simple coupled multi-degree-of-freedom model for the dynamic analysis was proposed.…”

Section: Bridge Design and Managementmentioning

confidence: 99%

Performance-Based Analysis in Civil Engineering: Overview of Applications

Easa

Yan

2019

Infrastructures

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Traditional design approaches in civil engineering mainly focus on codes/guidelines related to building an infrastructure, while performance-based analysis (PBA), an emerging new reality around the world, focuses on the performance of the end product. Professional organizations, academicians, and the industry have made significant contributions in formulating PBA in various civil engineering fields, where practical guidelines and principles have been adopted in infrastructure analysis. This paper presents a critical review of PBA applications in three civil engineering fields: transportation, environmental, and structural engineering. The applications are grouped into a wide array of civil engineering areas, including highway transportation, pavement design and management, air transportation, water-structures design and operation, landfill design, building architectural design for evacuation, urban energy design, building earthquake-based design, building wind-based design, and bridge design and management. A total of 187 publications on PBA were reviewed and details on 122 application papers (from 23 countries/regions) are presented. The review consists of vertical and horizontal scans of PBA applications. In the vertical scan, the applications in each civil engineering area are summarized in tabular format that shows the system element modeled, analysis objective, performance criteria, analytical tool, and specifications/codes. The horizontal scan (discussion and lessons learned) addresses the following aspects of PBA: (1) the wide array of analytical tools used, (2) the broad functional and process-related areas, (3) the advantages, challenges, and opportunities, and (4) potential future applications. It is hoped that the state-of-the-art review presented in this paper will help researchers/practitioners quickly find useful information about PBA and promote its development in their respective fields.

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Reliability analyses of RC bridge piers subjected to barge impact using efficient models

Cited by 37 publications

References 16 publications

Initial response mechanism and local contact stiffness analysis of the floating two-stage buffer collision-prevention system under ship colliding

Initial response mechanism and local contact stiffness analysis of the floating two-stage buffer collision-prevention system under ship colliding

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

Performance-Based Analysis in Civil Engineering: Overview of Applications

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