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An advanced optical sensor for measuring the displacement of civil infrastructure
An advanced optical sensor for measuring the displacement of civil infrastructure
Background
Damage to civil infrastructure due to earthquake or seismic activity is a concern in a number of different countries including China, Indonesia, Iran, Turkey, Japan, Peru, and the United States. Across the world, more than two billion people live in danger...
Published: 8/23/2023
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Inventor(s): David McCallen, Patrick Laplace, Floriana Petrone
Keywords(s): Construction & Built Environment
Category(s): Technology Classifications > Engineering
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Deep Foundation Porewater Pressure Dissipater
Background
Porewater pressure, or the pressure of groundwater held within soil, rock, or gaps between particles, is an important factor in determining the stress state of soil. If the porewater pressure is increased to equal the applied soil effective stress, the soil may lose its strength and stiffness, and act more like a liquid, in a process called...
Published: 5/19/2023
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Inventor(s): Sherif Elfass, Gary Norris
Keywords(s): Construction & Built Environment
Category(s): Technology Classifications > Engineering
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Method and Loading Module to Mechanically Increase Pile/Drilled Shaft End Bearing Stiffness
Background
Drilled shafts are deep foundation elements constructed in soil to resist compressive, uplift and lateral loads. This process involves drilling a hole to a design depth, and filling the hole with reinforcing steel and concrete. Tip resistance is not usually accounted for when estimating the overall capacity of drilled shafts and bored piles...
Published: 5/19/2023
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Inventor(s): Sherif Elfass, Gary Norris
Keywords(s): Construction & Built Environment
Category(s): Technology Classifications > Engineering
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Deconstructible Column Structures
Background
Conventional reinforced concrete buildings and bridges are not resilient. That is they suffer severe damage during moderate and strong earthquakes and have to undergo extensive repair or be replaced. Another common practice is that when reinforced concrete structures can no longer serve the necessary function, the entire structure is often...
Published: 5/19/2023
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Inventor(s): Mehdi (Saiid) Saiidi, George Ghusn
Keywords(s): Construction & Built Environment
Category(s): Technology Classifications > Engineering
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