Seismic resistance of locking ball devices and optimal design for irregular continuous bridges with one fixed pier

Fang, Rong; Zhang, Wenxue; Chen, Shitong; Zhao, Huimin

doi:10.1007/s10518-020-00788-1

Cited by 5 publications

(1 citation statement)

References 25 publications

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“…Therefore, in order to improve the seismic effect, on the one hand, a certain distance should be kept between the main beam and the transverse block to consume seismic energy through sliding friction. On the other hand, the use of UHPC (Ultra-High Performance Concrete) or high-strength steel transverse retaining blocks and installation of anti-falling beam chains can also resist earthquake damage [21][22][23].…”

Section: δ𝑢mentioning

confidence: 99%

Research on seismic performance of new bridge pier seismic reduction isolation system based on shaking table test

Wu¹

2022

J. vibroeng.

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In view of the current poor seismic performance of bridges, this paper started with the vibration isolation and reduction mechanism of the bearing, and deduced the coordination relationship between the stress and the deformation of the bearing under the vibration isolation and vibration reduction working conditions. Combined with the shaking table test, the defect that the traditional rubber bearing has poor seismic isolation effect was analyzed. Based on this, a base-bearing double reduction system was proposed and its vibration reduction and isolation effect was compared with the traditional bearing. The shaking table test results showed that, compared with the traditional bearing, the proposed vibration reduction system had better energy dissipation effect and could weaken the apparent cracking damage of the pier under the action of earthquake. Under the 125 m/s2-750 m/s2 peak acceleration excitation of the EI-Centro wave, the proposed vibration reduction system could greatly reduce the displacement variation of the upper main beam by 20 %-47 %. Moreover, the results of dynamic amplification factor measured at the corresponding height of the two types of piers also verified that the proposed base-bearing double vibration reduction system had greater competitiveness when the peak acceleration of seismic waves was less than 500 m/s2.

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Section: δ𝑢mentioning

confidence: 99%

Research on seismic performance of new bridge pier seismic reduction isolation system based on shaking table test

Wu¹

2022

J. vibroeng.

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Shaking table test on seismic response of a planar irregular structure with differential settlements of foundation

Bao

et al. 2022

Structures

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Damage mechanism and experimental study of continuous bridges equipped with Sc-FSB

Zhang

Zheng

et al. 2023

Structures

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Seismic resistance of locking ball devices and optimal design for irregular continuous bridges with one fixed pier

Cited by 5 publications

References 25 publications

Research on seismic performance of new bridge pier seismic reduction isolation system based on shaking table test

Research on seismic performance of new bridge pier seismic reduction isolation system based on shaking table test

Shaking table test on seismic response of a planar irregular structure with differential settlements of foundation

Damage mechanism and experimental study of continuous bridges equipped with Sc-FSB

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