Assessment of Design and Retrofitting Solutions on the Progressive Collapse of Hongqi Bridge

Khoei, Amir Seyed; Akbari, Ramin; Maalek, Shahrokh; Gharighoran, Alireza

doi:10.1155/2020/4932721

Cited by 6 publications

(4 citation statements)

References 17 publications

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“…Main characteristics of the zipper and section types are the re-distribution of additional loads to remaining load-bearing elements which are unable to absorb it, while in the case of domino or pancake collapses, the transformation of the potential energy to kinetic energy of the damaged element results in complete or partial failure. Some famous bridge failures due to progressive collapses are the Tacoma Narrows Bridge (zipper type) [71] and the Hongqi beam bridge (domino type) [72,73]. A typical zipper collapse of a cable-stayed bridge is presented in Figure 18, while the domino collapse of a beam bridge is shown in Figure 19.…”

Section: Progressive Collapsementioning

confidence: 99%

Bridge failures, forensic structural engineering and recommendations for design of robust structures

2021

JCE

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A review of forensic structural engineering, which is a strategy that follows after bridge failure, is presented in the paper. A detailed statistical analysis, and worldwide systematisation of available bridge failure data for the 1966-2020 period, are given. More than six hundred cases of partial or full collapse of bridges are analysed in detail, and causes that have led to their failure are examined. Failure of each of these bridges was in most cases not caused by a single factor, i.e. the main cause was most often just a trigger in the cause-and-effect sequence of events that contributed to such failure. Consequently, in addition to main causes, the influence of human factor, as a precondition leading to failure, is considered in each of the analysed cases. Types of progressive collapse, being a critical structural failure mechanism, are described in the second part of the paper, with an emphasis on bridges. An overview of the theory of structural robustness is also given. Design guidelines and approaches, aimed at preventing catastrophic failure and creating more robust structures, are presented. Methods for achieving robustness in the design of new bridges and in the strengthening of the existing ones are also described, and practical real-life examples are provided.

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Section: Progressive Collapsementioning

confidence: 99%

Bridge failures, forensic structural engineering and recommendations for design of robust structures

2021

JCE

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“…The reliability-and risk-based biobjective optimizations were conducted on a multi-girder carbon steel bridge to determine when and which carbon steel girders should be replaced under different target performance indicators [7]. Seyed et al (2020) investigated the effects of different alternatives for superstructure and substructure systems on the progressive collapse procedure after verifying the bridge collapse procedure [8]. In addition, the application of restrainers at the connection of the deck to the abutment was studied as an effective solution in order to prevent collapse propagation and minimize associated damages.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation analysis of construction of steel truss arch bridge with in-situ reconstruction of continuous girder bridge

Ren,

Hao,

2024

E3S Web of Conf.

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In order to carry out the stability analysis of the in-situ reconstructed steel truss bridge with continuous girder bridge, this study understood the basic overview of the project and the construction scheme, which carried out the construction analysis by numerical simulation method. It is easy to find that the maximum stress of bracket is 75N/mm2 which is less than 110N/mm2.The maximum deformation is 9.2mm, and column height/500=40mm.Stability is calculated as 10.2, which is in accordance with the code. Setting the reinforcement ring at the node part, the local stress is reduced from 285 N/mm2 to 145 N/mm2, which avoids the Z-direction tearing of the steel plate. During the construction stage, the tensile stresses at the top edge of block and bottom edge were 1.4 MPa and 1.5 MPa respectively, and the normal stress meets the construction requirements. The flexural bearing capacity can be satisfied without the temperature T-degree effect in consideration. The study can provide reference for the stability analysis of related cases.s

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“…The reliability-and risk-based bi-objective optimizations were conducted on a multi-girder carbon steel bridge to determine when and which carbon steel girders should be replaced under different target performance indicators. Seyed et al [18] investigated the effects of different alternatives for superstructure and substructure systems on the progressive collapse procedure after verifying the bridge collapse procedure. In addition, the application of restrainers at the connection of the deck to the abutment was studied as an effective solution in order to prevent collapse propagation and minimize associated damages.…”

Section: Introductionmentioning

confidence: 99%

Safety and Stability Analysis of Demolition and Reconstruction of Existing Railway Bridge Piers and Caps

Pan

Chen

2023

Applied Sciences

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The process of bridge reconstruction often involves the demolition and reconstruction of bridge piers and caps, while most of the construction methods used in the previous bridge reconstruction projects changed the bridge-bearing positions. In this paper, an in situ replacement scheme of bridge piers and caps is proposed, which can maintain the existing stress state of the bridge without changing the bearing position. In order to figure out the safety and stability of the in situ replacement scheme of existing railway bridges, a steel support system model for the removal and reconstruction of the bridge piers and caps is established by ABAQUS, according to a domestic railway bridge reconstruction project, and verified by field measurement test. Based on the model, the stress and deformation of the steel support system under a trainload are analyzed, as well as those of the bearing foundation and the superstructure. The results show that the steel support system and steel pipe piles located directly below the line carrying the trainload are subjected to the greatest stress and deformation. While under various load conditions, the stress and deformation of the main components in the steel support system of the in situ replacement scheme meet the design requirements, and the structure is safe under a trainload. In addition, guided by the numerical calculation results, the implementation scheme, existing problems, and solutions of the project are introduced in detail, which can provide a reference for similar projects.

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Assessment of Design and Retrofitting Solutions on the Progressive Collapse of Hongqi Bridge

Cited by 6 publications

References 17 publications

Bridge failures, forensic structural engineering and recommendations for design of robust structures

Bridge failures, forensic structural engineering and recommendations for design of robust structures

Numerical simulation analysis of construction of steel truss arch bridge with in-situ reconstruction of continuous girder bridge

Safety and Stability Analysis of Demolition and Reconstruction of Existing Railway Bridge Piers and Caps

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