Advances in the structural performance of reinforced concrete flat plate-column connections under gravity and seismic loads

Journal of Building Pathology and Rehabilitation, Год журнала: 2025, Номер 10(1)

Опубликована: Янв. 26, 2025

Язык: Английский

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Seismic Fragility Analysis of Hunchbacked Gravity Quay Walls Using a Multi-intensity Measure Approach

Results in Engineering, Год журнала: 2025, Номер unknown, С. 104691 - 104691

Опубликована: Март 1, 2025

Язык: Английский

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The application of the plastic limit analysis to extend the load-bearing capacity of historical timber roofs

Results in Engineering, Год журнала: 2025, Номер unknown, С. 105349 - 105349

Опубликована: Май 1, 2025

Язык: Английский

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Theoretical studies and verification on tall RC two-column piers with BRBs: Numerical simulations and shaking table tests

Engineering Structures, Год журнала: 2024, Номер 304, С. 117683 - 117683

Опубликована: Фев. 21, 2024

Язык: Английский

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Resistance of eccentric braced steel frames against progressive collapse and overload factor

Structures, Год журнала: 2024, Номер 70, С. 107933 - 107933

Опубликована: Ноя. 29, 2024

Язык: Английский

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Seismic collapse assessment of intermediate RC moment frames subjected to mainshock-aftershock sequences

Results in Engineering, Год журнала: 2023, Номер 20, С. 101629 - 101629

Опубликована: Ноя. 29, 2023

This paper assessed the effects of mainshock-aftershock (MS-AS) sequences on seismic vulnerability intermediate reinforced concrete moment frames (IRCFs), considering various mainshock intensity scenarios. Moreover, given limited library real MS-AS ground motion in Iran plateau, a sequence-selection method is proposed to generate artificial that incorporate magnitude, seismotectonic region, fault mechanism, and site condition target area. Three 4-, 7-, 10-story IRCFs, modeled OpenSees software, are subjected as well collapse fragility curves derived using incremental dynamic analysis (IDA) results. The results show occurrence can significantly increase buildings during aftershock. For scenarios, general decrease capacity observed across all mainshock-damaged buildings, with more significant for taller buildings. Hence, it essential consider aftershock design IRCFs mitigate risk collapse. Furthermore, by comparing responses caused those sequences, validity confirmed; thus, be used substitute sequences. Regression equations also presented predict reduction different story numbers presence

Язык: Английский

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Exploring the distribution of seismic loads in tunnel-form concrete buildings using the probable area method

Results in Engineering, Год журнала: 2024, Номер 21, С. 101851 - 101851

Опубликована: Фев. 2, 2024

Equivalent static analysis is a simplified method that widely used by designers and structural engineers in seismic design codes. However, the accuracy of this approach affected various parameters uncertainty sources. Moreover, its reliability for different demand performance levels not well-established, which raises doubts about application performance-based analysis. In study, new called probable area proposed to address shortcomings equivalent method. The suggested based on multi-level response modification factors probabilistic distribution corresponding intensities, providing more reliable estimate lateral loads at structure compared current deterministic forces. To evaluate effectiveness method, load three multi-story tunnel-form concrete buildings with 5, 7, 10 stories under basis hazard level (10% probability occurrence 50-year service life building, return period 475 years) computed using both methods. attained results show suitable estimating base shear forces an average error 80% 60%, respectively, near-exact responses derived from time-history On other hand, significantly reduces errors story forces, maximum values 18% 9%, respectively. These findings highlight potential improve

Язык: Английский

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Predicting the various modal parameters of reinforced concrete beams for different near surface mounting sensor arrangements

Results in Engineering, Год журнала: 2024, Номер 21, С. 101860 - 101860

Опубликована: Фев. 5, 2024

Vibration-based structural health monitoring of reinforced concrete structures gained a lot interest among the research community in recent years to develop modern methods vibration-based damage detection (VBDD) techniques. This is part an ongoing effort enhance VBDD techniques with focus on investigating sensor arrangements. As work, three 1/4th reduced-scale girders were manufactured. The specimens examined under static and modal testing. Two arrangements consisting 68 54 piezoelectric sensors applied, experimental analysis (EMA) was carried out incremental loading steps. Three key parameters, i.e. (1) natural frequency, (2) damping, (3) mode shapes obtained from EMA are then compared results finite element (FEA). Through FEA, optimum arrangement producing parameters investigated. trend variations progressing assessed. FEA presented average discrepancies 11.2 % 18.8 for frequencies #1 #2, respectively results. Furthermore, it found that frequency decreased increase state. Mode shape curvature changed after damage, however inconsistent damping values increasing levels.

Язык: Английский

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RESILIENCE AND VULNERABILITY: THE HAOUZ EARTHQUAKE'S EFFECT ON HOUSING IN THE WESTERN HIGH ATLAS OF MOROCCO

International Journal for Disaster and Development Interface, Год журнала: 2024, Номер 4(1), С. 27 - 51

Опубликована: Март 28, 2024

This article delves into the vulnerability of traditional dwellings and cluster housing in Western High Atlas region Morocco, highlighting major challenges they face during earthquakes. These houses, often built with natural materials such as earth, stone wood, reveal structural limitations nature's relentless forces. More specifically, looks at devastating Al Haouz earthquake 2023, which marked region's history most powerful over a century. It left behind tragic legacy loss life considerable material damage. underlines imperative understanding seismic risks to these are exposed, particularly culturally geologically rich tectonically active region. The goes beyond simply identifying problems, efforts made by government civil society rebuild prepare for similar disasters future. also highlights need strengthen resilience reconsider building standards better cope risks.

Язык: Английский

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Numerical Study of Steel Beam to Reinforce Concrete Column (RCC) Connection with Through-Plate and Buckling-Restrained Steel Plates

Results in Engineering, Год журнала: 2024, Номер 23, С. 102825 - 102825

Опубликована: Сен. 1, 2024

This study examines the behavior and failure mechanisms of steel beam-to-reinforced concrete column connections with through-plate buckling-restrained plates (BRSPs) configurations. These are critical components in composite structures, playing a vital role force transfer resistance to various loads, especially dynamic loads such as earthquakes. The primary objective this is analyze hysteresis these under cyclic loading using numerical analyses. Parametric models varying BRSP thicknesses, ranging from 5 25 mm, were used investigate their impact on load-bearing capacity. effects different thicknesses stress distribution analyzed. results parametric studies show that increasing thickness BRSPs improves beam-to-column connections. improvement includes reduced concentration enhanced uniformity distribution, which can lead localized failures increased overall connection stability. Numerical simulations indicate use (with 15 17 mm) wider more stable loops, reflecting energy absorption capacity improved deformation loading. findings reduce concentration, increase flexural resistance, prevent buckling beams. underscore importance enhance structural performance mitigate potential severe conditions.

Язык: Английский

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