Typical Earthquake Damage and Seismic Isolation Technology for Bridges Subjected to Near-Fault Ground Motions

Yuan, Wancheng; Feng, Ruiwei; Dang, Xiaohong

doi:10.1109/esaic.2018.00079

Cited by 4 publications

(6 citation statements)

References 11 publications

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“…Meanwhile, superstructures are mostly significantly displaced or completely collapsed [27]. Even modern bridges suffer severe damages under strong earthquakes [28,29]. Although there is some recorded evidence of favourable behaviour of seismically isolated bridges, it is evident that to date, not many bridges have experienced strong near-fault earthquakes [28,30].…”

Section: Introductionmentioning

confidence: 99%

Upgrading of isolated bridges with uniform gapped HS devices

2023

JCE

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The conducted extensive experimental seismic analysis showed seismic performances of a constructed large-scale bridge model representing system of upgraded isolated bridge with uniform gapped horizontal S-shaped devices (GHS System). The GHS system constituted double spherical rolling isolating bearings (DSRIB) and created original uniform horizontal S-shaped multi-gap (HS-MG) energy dissipation devices. With conducted laboratory cyclic tests, stable all-directional hysteretic responses were confirmed for both the DSRIB and HS-MG devices. In the dynamic seismic shaking table testing, the GHS bridge system showed favourable seismic response performances contributing to efficient bridge system protection. The established new GHS system exhibited large potential for qualitative improvement of seismic safety of isolated bridges exposed to very strong earthquakes.

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Section: Introductionmentioning

confidence: 99%

Upgrading of isolated bridges with uniform gapped HS devices

2023

JCE

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“…The hysteretic behavior performances of commonly used rubber and lead-rubber seismic bearings are presented in publications by Turkington et al (1989) and Robinson (1982). The specific behavior of sliding bearings can be perceived based on the research results obtained by Dolce et al (2007), Iemura et al (2007) or Kartoum et al (1992), while simple pendulum seismic bearings were considered by Wang et al (1998) or Zayas et al (1990), experimentally verified by Mokha et al (1990) and Constantinou et al (1992), and successfully implemented in the current practice. The widely studied (Xiang et al, 2019) and adopted isolation technology has been upgraded with various dissipative mechanisms to protect structures from near-source ground motions.…”

Section: Introductionmentioning

confidence: 99%

“…The super-structure is usually largely displaced, suffers large cracks or complete collapse (NIST, 1996). Even contemporary bridges suffer severe damages under unexpectedly strong earthquakes (Aye et al, 2018;Yuan et al, 2018). Typical design errors that have been met in practice so far can be summarized as follows: (1) Actual design of seismically isolated structures has been implemented case-by-case and without perceiving all relevant risk factors in creating a safe solution; (2) Some solutions involve energy dissipaters, which are separately designed to act in longitudinal or transverse direction, which is not consistent with the nature of the earthquake excitation; (3) Some severe damages or failures have occurred due to the lack of technological solution for limitation of very large displacements which may manifest during very strong earthquakes.…”

Section: Introductionmentioning

confidence: 99%

“…Although there are many confirmations of favorable behavior of seismically isolated bridges worldwide, the number of such near-fault bridges that have experienced actual strong earthquakes is very low (Lee et al, 2001;Yuan et al, 2018). Recently, evident is a great interest toward instrumentation for real-time collection of data related to bridge behavior under strong, near-fault ground motions which often contain abrupt pulses and permanent ground displacements.…”

Section: Introductionmentioning

confidence: 99%

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Upgrading of isolated bridges with space-bar energy-dissipation devices: Shaking table test

Ristić

Brujić

Ristic

et al. 2021

Advances in Structural Engineering

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The results of the experimental research program realized on a bridge model constructed by using the seismically isolated system upgraded with space-bar devices (USI-SB) are presented in the paper. The installed adaptable system for seismic protection of bridges utilizes double spherical rolling seismic bearings (DSRSB) as seismic isolators, while the qualitative improvement of seismic performances is achieved through the use of novel adjustable multi-directional space-bar energy dissipation (SB-ED) devices. The experimental program consisted of quasi-static testing of isolation and energy dissipation devices under the cyclic loading and extensive shaking-table testing of a large-scale bridge model with installed USI-SB system. For both types of devices, a very stable all-directional response during cycling tests, as well as the favorable hysteretic behavior of the energy dissipation devices along the entire range of applied large displacements were registered. In the dynamic testing, the system showed high seismic response modification performances needed for the efficient protection, exhibiting its large potential in the qualitative improvement of seismic performances of isolated bridges.

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“…However, in the recent years, contributions from many other countries are increased and have resulted in proposing of many new ideas and concepts. The intolerable severe impacts to modern bridge systems during strong recent earthquakes [1,2], have been observed. It has given rise to strong arguments about the further needs for development and practical implementation of seismic isolation systems in seismic protection of bridges, [3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Upgrading of Isolated Bridges With Vertical Fixed Energy Dissipation Devices: Shaking Table Seismic Tests

Ristić¹,

Behrami²,

Ristic³

2021

1st Croatian Conference on Earthquake Engineering

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In the Institute of Earthquake Engineering and Engineering Seismology (IZIIS), Ss. Cyril and Methodius University in Skopje, extensive experimental and analytical research have been performed led by the third author, in the frame of the innovative NATO Science for Peace Project "Seismic Upgrading of Bridges in South-East Europe by Innovative Technologies (SFP: 983828)". The specific project part included development of the innovative USI-VF system representing advanced technology for seismic isolation and seismic protection of bridges. By integrating the newly uniform VF energy dissipation devices, important advances of the USI-VF system have been achieved. The response of the isolated segment of the structure becomes controlled by simultaneous effects of the present isolation system and the new advanced added damping system. Initially, in the paper are presented the original research idea, device creation process, production of the first model prototypes, as well as, the original experimental laboratory tests of the main components of the integral prototypes of the developed new uniform VF energy dissipation devices. The innovative concept of the adaptive vertical energy dissipation device, VF device, has created important improvements and advanced seismic response features. The new VF devices provide added "adaptive" damping to the common seismically isolated system which generally does not possess sufficient damping capacity. In the second part of the paper, briefly are discussed unique and original observations resulting from conducted complex shaking table tests of large-scale bridge model. The extensive experimental research program is realized on a bridge model constructed by using the seismically isolated system upgraded with vertical fixed energy dissipation devices (USI-VF). The installed adaptable system for seismic protection of bridges utilizes double spherical rolling seismic bearings (DSRSB) as seismic isolators, while the qualitative improvement of seismic performances is achieved through the use of novel adjustable multi-directional vertical fixed energy dissipation (VF-ED) devices.

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Typical Earthquake Damage and Seismic Isolation Technology for Bridges Subjected to Near-Fault Ground Motions

Cited by 4 publications

References 11 publications

Upgrading of isolated bridges with uniform gapped HS devices

Upgrading of isolated bridges with uniform gapped HS devices

Upgrading of isolated bridges with space-bar energy-dissipation devices: Shaking table test

Upgrading of Isolated Bridges With Vertical Fixed Energy Dissipation Devices: Shaking Table Seismic Tests

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