RESEARCH NOTES
Engineering, explained
24 research notes exploring the engineering questions behind the papers, with original figures.
How does a tunnel’s angle to a fault change its deformation?
Six tunnel alignments reveal how normal and shear strains combine.
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Shaking and permanent offset: how can we separate the two?
A consistent method separates dynamic motion from fault-slip-induced movement across a region.
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Can a sandwich wall balance seismic performance and carbon emissions?
Linking structural performance and material use in wire-mesh concrete sandwich walls.
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Which ground-motion measure best describes fault-crossing tunnel deformation?
Comparing intensity measures with deformation demands in fault-crossing tunnels.
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Can recycled rubber help a subgrade respond to earthquakes?
Exploring seismic deformation in rubber–sand mixtures.
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What happens when three-dimensional seismic waves enter a valley?
How wave types and local terrain influence the response of a valley-spanning bridge.
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Is scaling one earthquake record enough to assess a bridge’s limits?
A magnitude-based approach to incremental dynamic analysis near faults.
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How many years of costs belong in the case for seismic isolation?
Life-cycle costs connect initial investment, earthquake damage and service interruption.
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How can a damper work harder when a tower bends?
A frame-jack mechanism amplifies relative motion in a damping system.
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How can a tunnel model capture both shaking and fault displacement?
A physics-based source approach provides spatially varying seismic inputs.
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How does a V-shaped valley change the shaking of an arch bridge?
Comparing Rayleigh-wave and shear-wave effects on bridge response.
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How does fault rupture change the shaking in a simulated earthquake?
Modelling strong ground motion from the 2022 Menyuan earthquake.
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What if reinforcing steel in an isolator is replaced by fibre material?
Experimental and numerical study of fibre-reinforced plastic seismic isolators.
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Why does liquid still slosh in an isolated storage tank?
An inerter-based mitigation system addresses the response of isolated tanks.
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How does earthquake intensity change the probability of damage?
Fragility analysis maps damage probabilities for base-isolated structures.
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Why can liquefied ground move sideways on nearly level terrain?
A coupling mechanism involving Rayleigh and shear waves.
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How much does a slope amplify earthquake motion?
Reliable boundary conditions help separate real site effects from numerical artefacts.
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Can a computer model lose the rhythm of a vibrating structure?
Time-integration algorithms and the control of numerical dispersion.
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How can seismic isolation become accessible to rural housing?
A review of practical foundation isolation techniques for village buildings.
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How can seismic waves enter and leave a small numerical domain?
A modified domain reduction method for localized wave propagation.
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Which uncertain parameters matter most in an isolated building?
Sensitivity analysis of structural and isolation-system parameters.
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How far can bridge analysis be simplified on bedrock?
Comparing seismic response models for a long-span cable-stayed bridge.
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How should a model handle bridge supports that move differently?
Comparing computational methods for multi-support seismic excitation.
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Why can two piers of the same bridge experience different motions?
River-valley geometry and soil layering influence the seismic input at each support.
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