Seismic resilience of bridges isolated with traditional and geotechnical seismic isolation (GSI)

Bulletin of Earthquake Engineering, Год журнала: 2023, Номер 21(7), С. 3521 - 3535

Опубликована: Март 7, 2023

Язык: Английский

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Seismic isolation effect of rubber-sand mixture cushion under different site classes based on a simplified analysis model

Soil Dynamics and Earthquake Engineering, Год журнала: 2023, Номер 166, С. 107738 - 107738

Опубликована: Янв. 9, 2023

Язык: Английский

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The role of Soil Structure Interaction (SSI) on the risk of pounding between low-rise buildings

Structures, Год журнала: 2023, Номер 56, С. 105014 - 105014

Опубликована: Авг. 8, 2023

Язык: Английский

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Development of a seismic vulnerability and risk model for typical bridges considering innovative intensity measures

Engineering Structures, Год журнала: 2023, Номер 302, С. 117431 - 117431

Опубликована: Дек. 29, 2023

Язык: Английский

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Building wildland–urban interface zone resilience through performance-based wildfire engineering. A holistic theoretical framework

Euro-Mediterranean Journal for Environmental Integration, Год журнала: 2023, Номер 8(3), С. 675 - 689

Опубликована: Июль 10, 2023

Abstract In recent years, a worldwide expansion in the frequency of large, uncontrolled, and catastrophic wildfire events has occurred, creating drastic social, economic, environmental damage, especially wildland–urban interface (WUI) zones. This damage includes losses life, infrastructure, ecosystem services. The impacts wildfires at WUI derive from complicated multidimensional interconnected relationships present Anthropocene. To enforce resilience environment human communities against wildfires, it is critical to comprehend local social-ecological systems holistically. this paper, we theoretical framework approach, built on performance-based engineering, that envisioned be stepping stone towards resilience. attain objective, performance benchmarking design disaggregated into explicit components rigorous mathematical framework. They are linked causal inference chain, providing an integrated picture enabling decision analysis identify optimal management strategies based quantitative parameters. proposed developed total probability theorem divides risk assessment single parts, particular (1) hazard (wildfire) analysis, (2) impact characterization, (3) interaction (4) (5) (6) loss analysis. Therefore, can applied by emergency agencies directly assess society recovery after wildfire, making policy-making more effective.

Язык: Английский

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Analytical design models for geotechnical seismic isolation systems

Bulletin of Earthquake Engineering, Год журнала: 2022, Номер 21(8), С. 3881 - 3904

Опубликована: Июль 25, 2022

Abstract Geotechnical Seismic Isolation (GSI) can be defined as a new category of seismic isolation techniques that involve the dynamic interaction between structural system and geo-materials. Whilst mechanism various GSI systems their performance have already been demonstrated through different research methods, there is missing link fundamental engineering practice. This paper aims to initiate development in this direction. A suite equivalent-linear foundation stiffness damping models under same framework proposed for four configurations, one which novel combination two existing ones. The exact solutions equivalent properties flexible-base also derived explicitly include inertia strain-dependent materials, are both significant systems. application analytical design has illustrated response history analyses detailed hand-calculation procedure outlined demonstrated.

Язык: Английский

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Dynamic properties of recycled polyurethane-coated rubber-soil mixtures

Case Studies in Construction Materials, Год журнала: 2023, Номер 18, С. e01859 - e01859

Опубликована: Янв. 18, 2023

A large quantity of end-of-life tire (ELT) rubber is being blended with thermoplastic polyurethane to provide a durable and ecologically friendly material for flexible surfaces, while significant elastomeric waste (left-over cut-outs) also generated. These materials can be used efficiently seismic isolation vibration damping at minimal cost, process known as frugal innovation. In this regard, (TPE) material, which polyurethane-coated (PUcR), obtained from the recycling industry, explored in study. Herein, we targeted evaluate stiffness energy dissipation capabilities TPE or PU-coated rubber, which, best our knowledge, has never been reported before. To that end, series cyclic triaxial tests were carried out on rubber-soil mixtures. comparison untreated mixtures, shear modulus mixtures reduces by 5.5–12.7%, ratio increases up 12.6%.

Язык: Английский

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Energy Dissipation Efficiency of Geotechnical Seismic Isolation with Gravel-Rubber Mixtures: Insights from FE Non-Linear Numerical Analysis

Journal of Earthquake Engineering, Год журнала: 2024, Номер 28(9), С. 2422 - 2439

Опубликована: Фев. 12, 2024

This paper provides new and useful insights into the performance efficiency of geotechnical seismic isolation (GSI) systems with gravel-rubber mixtures containing 10%, 25% 40% volumetric rubber content (VRC). Finite element numerical models were developed in OpenSees subjected to sinusoidal ground motions varying input base acceleration frequency. The best was attained for VRC = at a frequency 8 Hz. Using newly GSI index, energy dissipation found vary between good excellent, while that 10% is poor.

Язык: Английский

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A comparative life cycle assessment of recycled tire rubber applications in sustainable earthquake-resistant construction

Resources Conservation and Recycling, Год журнала: 2024, Номер 211, С. 107860 - 107860

Опубликована: Авг. 23, 2024

Язык: Английский

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Serviceability performance of buildings founded on rubber–soil mixtures for geotechnical seismic isolation

Australian Journal of Structural Engineering, Год журнала: 2023, Номер 24(4), С. 265 - 278

Опубликована: Июнь 29, 2023

Base isolation is a low-damage seismic design strategy that can be used for constructing resilient structures. Geotechnical (GSI) new category of emerging base techniques has attracted global interest in the past decade. Research on GSI based rubber-soil mixtures (RSM) focused structural performance under earthquake actions, whilst there are concerns over serviceability limit states (SLS) requirements relation to (i) human comfort strong winds and (ii) ground settlement gravity, which may induce cracking durability issues This article presents first study buildings constructed with GSI-RSM system. The finite element model coupled soil-foundation-structure system been validated by data recorded from geotechnical centrifuge testing. numerical estimates have also compared analytical predictions. It concluded satisfactorily fulfill SLS requirements.

Язык: Английский

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