Search Results: 'Liquefaction'

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10 results for "Liquefaction"
The return period of soil liquefaction By Roy Mayfield
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A doctoral dissertation describing research at the University of Washington concerning the assessment of soil liquefaction potential using a performance-based framework.
The return period of soil liquefaction By Roy Mayfield
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A doctoral dissertation describing research at the University of Washington concerning the assessment of soil liquefaction potential using a performance-based framework.
OTREC-RR-13-05 By Michael Scott, Scott Ashford, Deepak Rayamajhi
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Liquefaction and liquefaction induced damage in pile supported structures is seen in earthquakes around the world. The Pacific Northwest has seismic hazard conditions as a Cascadia Subduction Zone... More > (CSZ) with an expected earthquake magnitude of 9.0 (Mw) and a 300 year return period. Oregon Dept. of Transportation found thousands of Oregon bridges to be vulnerable to a CSZ earthquake, with repair and replacement costs estimated at over $1 billion. This research sought to evaluate the seismic performance of bridge foundations and liquefaction mitigation alternatives. The main objectives were to develop design charts for mitigation alternatives and to develop methodologies for assessing the performance of bridge pile foundations in laterally spreading ground. Research focuses are: 1) ground improvement methods, particularly using stone columns and deep soil mixing grids, and 2) assess the seismic performance of bridge foundations and seismic retrofitting alternatives for the bridge foundation.< Less
OTREC-RR-13-05 By Scott Ashford, Michael Scott, Deepak Rayamajhi
eBook (PDF): $0.00
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Liquefaction and liquefaction induced damage in pile supported structures is seen in earthquakes around the world. The Pacific Northwest has seismic hazard conditions as a Cascadia Subduction Zone... More > (CSZ) with an expected earthquake magnitude of 9.0 (Mw) and a 300 year return period. Oregon Dept. of Transportation found thousands of Oregon bridges to be vulnerable to a CSZ earthquake, with repair and replacement costs estimated at over $1 billion. This research sought to evaluate the seismic performance of bridge foundations and liquefaction mitigation alternatives. The main objectives were to develop design charts for mitigation alternatives and to develop methodologies for assessing the performance of bridge pile foundations in laterally spreading ground. Research focuses are: 1) ground improvement methods, particularly using stone columns and deep soil mixing grids, and 2) assess the seismic performance of bridge foundations and seismic retrofitting alternatives for the bridge foundation.< Less
Earthquake Safety By American Government
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As a current or potential owner of a home*, you should be very concerned about the potential danger to not only yourselves and your loved ones, but also to your property. The major threats posed by... More > earthquakes are bodily injuries and property damage, which can be considerable and even catastrophic. Most of the property damage caused by earthquakes ends up being handled and paid for by the homeowner. There are no guarantees of safety during earthquakes, but properly constructed and strengthened homes are far less likely to collapse or be damaged during earthquakes. FEMA advises you to act on the suggestions outlined in this booklet and make yourself, your family, and your home safer.< Less
Origin of the Continents - An Introduction to the Theory of the Lithologic Cycle By Max B. Frederick
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The ocean is, on the average, nearly three miles deep. The continents barely stick out above sea level. The rocks that make up the continents are lighter than the rocks of the sea floor. But those... More > lighter rocks are still much heavier than the water of the sea. If there were nothing keeping those continental rocks gathered up into piles three miles high, they would be spread all over the sea floor. The planet earth would be completely covered with water with no land sticking out above water. What keeps those rocks piled up into continents? Origin of the Continents proposes an answer to that long standing puzzle. There is a cycle, a phenomenon that gathers one kind of rocks into continents and spread another kind of rocks out over the sea floor. This phenomenon is called the "Lithologic Cycle."< Less
Origin of the Continents By Max B. Frederick
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The ocean is, on the average, nearly three miles deep. The continents barely stick out above sea level. The rocks that make up the continents are lighter than the rocks of the sea floor. But those... More > lighter rocks are still much heavier than the water of the sea. If there were nothing keeping those continental rocks gathered up into piles three miles high, they would be spread all over the sea floor. The planet earth would be completely covered with water with no land sticking out above water. What keeps those rocks piled up into continents? Origin of the Continents proposes an answer to that long standing puzzle. There is a cycle, a phenomenon that gathers one kind of rocks into continents and spread another kind of rocks out over the sea floor. This phenomenon is called the "Lithologic Cycle."< Less
C E S : Cryogenic Energy Storage in Load Shifting Operations of Nuclear Power Plants By Prof.Dr. A Kanni Raj
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CES : Cryogenic Energy Storage in Load Shifting Operations of Nuclear Power Plants – resides on a novel method of integration of nuclear power generation with cryogenic energy storage (CES) to... More > achieve an effective time shift of the electrical power output. CES stores excess electricity in the form of cryogen (liquid air/nitrogen) through an air liquefaction process at off-peak hours and recover the stored power by expanding the cryogen at peak hours. It shall serve as a reference book for industrialists and academicians working with cryogenic engineering.< Less
Seismic Design of Waterfront Retaining Structures By U.S. Army Corps of Engineers
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This book deals with the soil mechanics aspects of the design of waterfront retaining structures built to withstand the effects of earthquake loadings. It addresses the stability and movement of... More > gravity retaining walls and anchored sheet pile walls, and the dynamic forces against the walls of drydocks and U-frame locks. It also contains one of the most complete descriptions of lateral earth pressure theory available anywhere. The effects of wall displacements, submergence, liquefaction potential, and excess pore water pressures, as well as inertial and hydrodynamic forces, are incorporated in the design procedures. Several new computational procedures are described in this report.< Less
Bridges and Tunnels: Investigate Feats of Engineering By Donna Latham
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Illustrated by Jen Vaughn. Bridges and tunnels are lifelines. People have tackled seemingly insurmountable obstacles, including vast canyons and mountain ranges, to design and construct these... More > amazing passageways. Bridges and Tunnels: Investigate Feats of Engineering invites children ages 9 and up to explore the innovation and physical science behind structures our world depends on. Trivia and fun facts illustrate engineering ingenuity and achievements. Activities and projects encourage children to learn about the engineering process and to embrace trial and error. Children will engage in a hands-on exploration of Newton’s Third Law of Motion and of forces that push and pull on structures. They’ll make an egg bungee jump and a soda pop can engine. They’ll experiment with a triangular toothpick dome, liquefaction, and corrosion. In Bridges and Tunnels: Investigate Feats of Engineering, children will explore their own engineering and building skills as they create several bridge models. GRL: R< Less