Recent advances in engineering characteristics of near-fault ground motions and seismic effects of building structures

Yang, Dixiong; Yang, Kaisheng; Chen, Guohai

doi:10.14264/uql.2016.636

Cited by 5 publications

(2 citation statements)

References 23 publications

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“…Therefore, in a seismic action, there are many complete references and the time duration of the earthquake tends to be small, thereby causing stress on the building [45,49]. Several studies on the statistical equations of seismicity have been carried out without separating the use of ground motion data sets in terms of distances to the nearest fault line [51][52][53][54][55]. The engineering field has extensively investigated and developed algorithms and control systems.…”

Section: Introductionmentioning

confidence: 99%

Review of Magnetorheological Damping Systems on a Seismic Building

et al. 2021

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Building structures are vulnerable to the shocks caused by earthquakes. Buildings that have been destroyed by an earthquake are very detrimental in terms of material loss and mental trauma. However, technological developments now enable us to anticipate shocks from earthquakes and minimize losses. One of the technologies that has been used, and is currently being further developed, is a damping device that is fitted to the building structure. There are various types of damping devices, each with different characteristics and systems. Multiple studies on damping devices have resulted in the development of various types, such as friction dampers (FDs), tuned mass dampers (TMDs), and viscous dampers (VDs). However, studies on attenuation devices are mostly based on the type of system and can be divided into three categories, namely passive, active, and semi-active. As such, each type and system have their own advantages and disadvantages. This study investigated the efficacy of a magnetorheological (MR) damper, a viscous-type damping device with a semi-active system, in a simulation that applied the damper to the side of a building structure. Although MR dampers have been extensively used and developed as inter-story damping devices, very few studies have analyzed their models and controls even though both are equally important in controlled dampers for semi-active systems. Of the various types of models, the Bingham model is the most popular as indicated by the large number of publications available on the subject. Most models adapt the Bingham model because it is the most straightforward of all the models. Fuzzy controls are often used for MR dampers in both simulations and experiments. This review provides benefits for further investigation of building damping devices, especially semi-active damping devices that use magnetorheological fluids as working fluids. In particular, this paper provides fundamental material on modeling and control systems used in magnetorheological dampers for buildings. In fact, magnetorheological dampers are no less attractive than other damping devices, such as tuned mass dampers and other viscous dampers. Their reliability is related to the damping control, which could be turned into an interesting discussion for further investigation.

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Section: Introductionmentioning

confidence: 99%

Review of Magnetorheological Damping Systems on a Seismic Building

et al. 2021

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“…Near-fault earthquake generally refers to the ground motion that is close to the rupture surface within the distance smaller than 20 km (Yang et al, 2015). The velocity pulse effect and the high-frequency vibration are the main characteristics of near-fault earthquakes.…”

Section: Introductionmentioning

confidence: 99%

Seismic damage features of high-speed railway simply supported bridge–track system under near-fault earthquake

Guo

Gao

et al. 2020

Advances in Structural Engineering

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Seismic loads pose a potential threat to the high-speed railway bridges in China, which have been rapidly developing in recent years, especially for those subjected to the near-fault earthquakes. The previous researches on high-speed railway bridges usually concern the far-field earthquake, and the damage of high-speed railway bridge–track system subjected to the near-fault earthquake has not been well studied. In this article, a seven-span high-speed railway simply supported bridge–track system is selected to explore the seismic damage features under the excitation of near-fault earthquake which possesses characteristics of obvious velocity pulse and high-frequency vibration. First, a detailed finite element model of the selected bridge–track system is established and calibrated by the experimental data and design code. Then the low-frequency pulse-type portion and the high-frequency background portion are separated from the selected eight original near-fault records, and a series of nonlinear dynamic analysis is conducted. The results show that the background portion leads to more serious damage of the bridge–track system than the pulse-type portion. Due to the high stiffness of high-speed railway bridge–track system, the background portion with high-frequency vibration characteristic produces the main part of seismic response of system. As for the damage part of system, the weakest component of the bridge–track system is the sliding layer, followed by the shear alveolar.

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Soil-structure interaction of existing buildings near the active fault zone (Burdur-Turkey)

Özçelik

Sarp

2017

Arab J Geosci

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Recent advances in engineering characteristics of near-fault ground motions and seismic effects of building structures

Cited by 5 publications

References 23 publications

Review of Magnetorheological Damping Systems on a Seismic Building

Review of Magnetorheological Damping Systems on a Seismic Building

Seismic damage features of high-speed railway simply supported bridge–track system under near-fault earthquake

Soil-structure interaction of existing buildings near the active fault zone (Burdur-Turkey)

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