Low‐damage steel structures for enhanced life‐cycle seismic performance

Lignos, Dimitrios G.; Paronesso, Martina

doi:10.1002/stab.202200023

Cited by 3 publications

(3 citation statements)

References 33 publications

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“…Currently, the structural engineering community is striving with issues of sustainability (to reduce material consumption, to reuse the structural elements and structures, and to recycle the steel material) and structural resiliency (predictable and timely functional recovery after a strong earthquake [86]). Such examples are presented in [87,88]. Nevertheless, any type of action requires collaboration, combination, and the development of strong relationships between research, construction practices, and policies.…”

Section: Discussion and Aftermathsmentioning

confidence: 99%

Behavior of steel building structures subjected to strong and benchmark seismic actions: An overview of damage from the observations of the last 40 years

ANASTASIADIS

2024

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It is well known that steel structures have high ductility capacity and high strength to weight ratio, which, theoretically, by nature makes them, the most efficient seismic structural system against strong earthquakes. However, the recorded experience of failures which have befallen over the last 40 years, as a result of strong seismic actions, suggests that this by itself isn't always sufficient. Generally, it is essential that an appropriate and preferred conformation and configuration of the structural system and in particular of its joints should be adopted. In any case, the steel building structures showed local failures without general and complete collapses. The work in this paper presents the seismic performance focused on steel building structures, as revealed by strong earthquakes, such as those of Mexico (1985), Northridge (1994), USA, Kobe (1995), Japan, Christchurch (2010-2011), N. Zealand, which affected and changed the design of metal structures, as well as other earthquakes like Maule (2010), Chile, Emilia (2012), Amatrice (2016), Italy, which completed the picture in the better understanding of failures and their reasons. On the basis of the lessons learnt from, a discussion for avoiding such situations are commented on and provided in this work.

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Section: Discussion and Aftermathsmentioning

confidence: 99%

Behavior of steel building structures subjected to strong and benchmark seismic actions: An overview of damage from the observations of the last 40 years

ANASTASIADIS

2024

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“…However, the repair costs in the aftermath of a severe earthquake are very high, and in many cases the more cost-effective option is to demolish the entire structure and rebuild it. To overcome this problem, many studies were recently carried out to develop resilient low-damage structures to quickly restore the structure's full functionality [4][5][6]. Such a design goal can be reached by localizing the damage in the friction devices (also called "friction dampers"), which are mindfully designed for this purpose and which are easily replaceable after the catastrophic event.…”

Section: Introductionmentioning

confidence: 99%

Steel Beam-to-Column Friction Joint under a Column Loss Scenario

Tartaglia,

Carlevaris,

D’Aniello

et al. 2024

Buildings

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FREEDAM joints have been recently seismically prequalified for applications in European seismically prone countries. Despite their excellent seismic response, FREEDAM joints are not purposely conceived for exceptional loading conditions, such as in the case of a column loss scenario. Therefore, a comprehensive parametric numerical study has been carried out to investigate the robustness of this type of joint, varying the geometry of the beam–column assembly and the associated friction device. The results of the performed finite-element simulations allowed the identification of the critical components of the joints such as the upper T-stub connecting the upper beam flange to the column. This component is characterized by significant demand, due to the concentration of tensile and shear forces when catenary action develops in the beam. In order to enhance the ductility of the beam-to-column joint under large imposed rotations, the details of the upper T-stub connection were modified and numerically analyzed. The obtained results allowed for the verifying of the effectiveness of the amended details as well as characterizing the evolution of the tensile forces in the bolts.

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“…Figure 1 represents some examples of novel methods implemented to mitigate the earthquake influences and redistribute forces in the building to avoid an overall collapse. Furthermore, researchers reported the utilization of moment-resisting frames, diaphragms, cross braces, and shear walls to control the momentum and shear forces when seismic activities occur [4][5][6]. Moreover, scholars remarked on the significance of using a tuned mass (pendulum) damper in which a mass is suspended in the center of the building and controls the frequency of the building when earthquakes cause significant vibrations [7,8].…”

Section: Introductionmentioning

confidence: 99%

Investigating the potential of liquefaction issue of some Turkish dams during earthquakes

Mahmood

Naimi

2022

PEN

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This research is carried out to investigate and assess the critical role of soil properties and their content in influencing the soil liquefaction phenomenon that takes place when an earthquake happens. A case study is considered in this work, representing the Karakaya Dam. Two research approaches were implemented to achieve the research goal, including extrapolation in Excel and numerical optimization using linear regression. The outputs revealed that the annual temperature in the future of zones around the Karakaya Dam, including Azami, Ortalama, and Asgari, would witness a moderate increase of about 3 to 6 degrees Celsius in the next decade. Moreover, the research confirmed that the Euphrates River discharge rate at the Karakaya Dam would witness a significant increase from (100-350 m 3 ) to (2,590-2,640 m 3 ) in 2029, explaining that temperature and discharge rate may influence the liquefaction. Meanwhile, the research outputs indicated that soil temperature under the Karakaya Dam and chemical elements would not vary significantly in the next decade. Notwithstanding, the pH number will change widely from 4.14 to 9.74 in 2029. Besides, the most significant chemical molecule concentration in the soil under the Karakaya Dam is the phosphite anion, corresponding to a minimum and maximum concentration of 1 and 2 μg/m 2 , respectively.

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Low‐damage steel structures for enhanced life‐cycle seismic performance

Abstract: How to Cite this Paper

Cited by 3 publications

References 33 publications

Behavior of steel building structures subjected to strong and benchmark seismic actions: An overview of damage from the observations of the last 40 years

Behavior of steel building structures subjected to strong and benchmark seismic actions: An overview of damage from the observations of the last 40 years

Steel Beam-to-Column Friction Joint under a Column Loss Scenario

Investigating the potential of liquefaction issue of some Turkish dams during earthquakes

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