An efficient cable-type energy dissipation device for prevention of unseating of bridge spans

Xing, Xinkui; Lin, Lanri; Qin, Heying

doi:10.1016/j.istruc.2021.03.116

Cited by 4 publications

(4 citation statements)

References 26 publications

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“…There are also units that need to inherit different superclasses depending on the application. According to the plane element description, it is divided into components such as ordinary reinforcement and prestressed reinforcement unit and is derived from the plane element; when used as a rod element, it shall be described as a rod element and it is derived from the rod element [ 6 – 9 ].…”

Section: Methodsmentioning

confidence: 99%

Visual Multimedia Intelligent Computing System for Seismic Performance of Bridge Structure Based on Object-Oriented Technology

Zheng

Xie

2022

Computational Intelligence and Neuroscience

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In order to further promote the standardization of seismic performance design of bridge structures, one must ensure the quality of bridge design and improve design efficiency. First, based on the basic principle of the probabilistic pushover method, the randomness of the structural pushover curve is attributed to the randomness of plastic hinges. Second, the visualization of seismic performance of bridge structures based on the object-oriented technology is adopted. So that the randomness of seismic action can be considered in the analysis of seismic performance. Finally, the limit state equation of the seismic performance of the structure is used to evaluate the reliability of the seismic performance of the bridge in each limit state conveniently. The results show that the failure probability of the structure in each limit state is less than 0.5 under different basic accelerations from 0 to 0.4 g. The software method is simple in calculation and has a strong adaptability, avoiding the difficulty of seismic reliability analysis caused by large-scale simulation and large amount of calculation of traditional structures. Therefore, this method can be easily applied to the probabilistic analysis of seismic behavior of bridge structures under large earthquakes without evaporative deformation failure criterion.

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Section: Methodsmentioning

confidence: 99%

Visual Multimedia Intelligent Computing System for Seismic Performance of Bridge Structure Based on Object-Oriented Technology

Zheng

Xie

2022

Computational Intelligence and Neuroscience

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“…Extensive studies suggest that using seismic bearings and dampers leads to seismic retrofit of buildings and bridges (Xiang and Li 2016;Mansouri and Nazari 2017;Zhou and Tan 2018;Luo et al 2019;Kontoni and Farghaly 2019). Recently, studies on the effects of using seismic bearings and dampers indicated that these devices could reduce the seismic response of structures (Cho et al 2020;Hassan and Billah 2020;Cao et al 2020;Zheng et al 2020;Wei et al 2021;Xing et al 2021;Ristic et al 2021;Khedmatgozar Dolati et al 2021;Yuan et al 2021;Chen and Xiong 2022;Marnani et al 2022;Guo et al 2022).…”

Section: Introductionmentioning

confidence: 99%

The effects of the duration, intensity and magnitude of far-fault earthquakes on the seismic response of RC bridges retrofitted with seismic bearings

Mansouri

Kontoni

Pouraminian

2022

ABEN

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This paper investigates the effects of earthquakes’ duration, intensity, and magnitude on the seismic response of reinforced concrete (RC) bridges retrofitted with seismic bearings, such as elastomeric bearings (EB), lead rubber bearings (LRB), and friction pendulum bearings (FPB). In order to investigate the effects of the seismic isolation, the condition of the deck with a rigid connection on the cap beams and abutments (i.e., without isolation) was investigated as the first model. The EB, LRB and FPB bearings are used between the superstructure and substructure of the studied bridge in the second, third and fourth models, respectively. First, the effects of using seismic bearings on the seismic retrofit of an RC bridge under the Tabas earthquake were investigated. The results of the nonlinear dynamic analysis showed that the use of seismic bearings leads to seismic retrofit of the studied bridge, and FPB and LRB had the best results among the studied isolation equipment, respectively. The same models were also studied subjected to the Landers and Loma Prieta earthquakes. The magnitude of the Landers and Tabas earthquakes is equal to 7.3 Richter, and the magnitude of the Loma Prieta earthquake is equal to 6.7 Richter. However, the duration and intensity of the Landers and Loma Prieta earthquakes are much larger than the Tabas earthquake. The Landers and Loma Prieta earthquakes caused instability in the isolated models due to their significant duration and intensity. This issue shows that using seismic bearings is very useful and practical for seismic retrofitting bridges subjected to far-fault earthquakes. According to most seismic codes, selecting earthquakes in far-region of faults is based on just magnitude criterion. However, this study indicates that there are two main factors in the features of far-fault earthquakes, including duration and intensity. Ignoring these factors in selecting earthquakes may lead to the instability of structures. Considering earthquakes’ duration, intensity, and magnitude are vital for selecting earthquakes in the far region of the fault.

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Section: -Introductionmentioning

confidence: 99%

“…One of the most effective solutions for bridges' seismic retro t is using energy dissipation equipment. Extensive studies suggest that energy dissipation devices lead to bridges' seismic retro t [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17].Studies showed that earthquakes are divided into two groups of near and far fault earthquakes according to the distance of the earthquake recording station from the fault. Each group of earthquakes has speci c characteristics [18][19].…”

mentioning

confidence: 99%

The effects of the duration, intensity and magnitude of far-fault earthquakes in seismic retrofitting an RC bridge

Mansouri

Pouraminian

2022

Preprint

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This paper investigated the effects of the duration, intensity, and magnitude of earthquakes in seismic retrofitting of RC bridges using seismic bearings. First, the seismic retrofit of an RC bridge using seismic bearings under the Tabas earthquake was investigated. Seismic bearings included elastomeric bearing (EB), lead rubber bearing (LRB), and friction pendulum bearing (FPB). In order to investigate the effects of this equipment, the condition of the deck with a rigid connection on the cap beams and abutments was investigated in another model. The results of the studies showed that the use of seismic bearings leads to seismic retrofit of the studied bridge, and FPB and LRB had the best results among the studied equipment, respectively. The same models were studied subjected to the Landers earthquake. The magnitude is equal to Landers and Tabas earthquakes, but the duration and intensity of the Landers earthquake are much larger than Tabas earthquake. The Landers earthquake caused instability of isolated models due to its significant duration and intensity. This issue indicates that in the far region of faults, considering the duration and intensity of earthquakes is very important to seismic retrofit of bridges using seismic bearings. Also, magnitude as the only criterion for selecting earthquakes is not suitable for seismic design and retrofit of bridges.

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An efficient cable-type energy dissipation device for prevention of unseating of bridge spans

Cited by 4 publications

References 26 publications

Visual Multimedia Intelligent Computing System for Seismic Performance of Bridge Structure Based on Object-Oriented Technology

Visual Multimedia Intelligent Computing System for Seismic Performance of Bridge Structure Based on Object-Oriented Technology

The effects of the duration, intensity and magnitude of far-fault earthquakes on the seismic response of RC bridges retrofitted with seismic bearings

The effects of the duration, intensity and magnitude of far-fault earthquakes in seismic retrofitting an RC bridge

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