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Seismic Design and Performance of Railroad Bridges
Damage to railroad bridges during earthquakes in the United States and Japan is summarized. Research tasks are outlined to develop seismic design and retrofit criteria for railroad bridges....

Earthquake Considerations in Design of the Los Angeles Metro
This paper discusses the earthquake design of the Los Angeles Metro. The design earthquake parameters are presented and discussed in light of the behavior of buried structures subjected...

Seismic Design for Port of Los Angeles, 2020 Program
Due to the Port of Los Angeles' (POLA) importance as a regional hub for transportation and commerce and the potential for a major seismic event in the Southern California...

Seismic Retrofit of Highway Bridge Structures
The California Division of Structures began its column retrofit program in 1986. This program is a supplement to the earlier superstructure retrofit program. Analysis and design concepts...

San Francisco Double-Deck Viaduct Retrofits
Following the Loma Prieta Earthquake in October 1989, six double-deck reinforced concrete viaducts in San Francisco were closed because of some isolated damage, and as a precaution for...

Retrofitting Northwest Connector for Seismic Forces
Many pre-1971 bridges in California have inadequate seismic resistance due to non-ductile components or poor connectivity of superstructure elements. Caltrans has finished the first retrofit...

Screening Procedures for the Retrofit of Bridges
Since the October 1989 Loma Prieta Earthquake in Northern California, interest has revived in seismic criteria for both new design and the retrofit of existing highway bridges. This interest...

Scenario for Improving the Seismic Resistance of Pipelines in the Central United States
A number of pipelines transporting crude oil and natural gas to the Midwest and Northeast pass within and adjacent to the New Madrid seismic zone in the central United States. A major...

Seismic Hazard Along a Crude Oil Pipeline in the Event of an 1811-1812 Type New Madrid Earthquake
This paper presents an assessment of the seismic hazard that exists along a major crude oil pipeline (pipeline 22). An 1811-1812 type New Madrid earthquake with moment magnitude 8.2 is...

Seismic Design Practices for Power Systems: Evolution, Evaluation, and Needs
The evolution of seismic design practices in electric power systems is reviewed. In California this evolution had led to many installation practices that are directed at improving the...

First Experience Concerning the Seismic Behaviour of an Electric Power System in Eastern North America
The November 25, 1988, Saguenay earthquake of magnitude M_bL_g=6.5 occurred in the province of Quebec, Canada....

Design of Substation Foundations for Liquefaction
When substation foundations penetrate liquefiable strata within risk prone seismic regions, the potential loss of support must be evaluated with state-of-the-art methods to determine foundation...

Earthquake Evaluation of a Substation Network
The impact of the occurrence of a large, damaging earthquake on a regional electric power system is a function of the geographical distribution of strong shaking, the vulnerability of...

Telecommunications Facilities Earthquake Readiness Since San Fernando
The vertical rack architecture of telecommunication offices showed some weaknesses during the San Fernando earthquake in 1970. Efforts have been made since then to improve performance...

Seismic Vulnerability Assessment of Seattle Water Department's Water System Facilities
The Seattle Water Department (SWD) service area and watersheds lie in seismic zone 3, in which there is potential for major earthquakes (Richter magnitude 7.5 or greater). The SWD system...

Performance of Pipelines During Soil Liquefaction
This paper presents the behavior of buried pipelines during soil liquefaction through reconnaissance work after the 1989 Loma Prieta Earthquake and response analysis based on a beam theory....

Inventory and Seismic Loss Estimation of Portland Water/Sewer Systems GIS Application to Buried Pipelines
Portland, Oregon has been identified by USGS as one of the earthquake-prone areas, in which earthquake hazard mitigation is important. This project develops an efficient and realistic...

Earthquake Loss Estimation of the Portland, Oregon Water and Sewage Systems?Evaluation of Concentrated Facilities
This paper summarizes a report that provides an inventory of concentrated water and sewage facilities in two selected drainage basins in the City of Portland. Concentrated facilities include...

Seismic Hazards for Memphis Water Delivery Systems
Estimation of seismic hazards is the first essential task in performing the seismic risk assessment of a municipal water delivery system. This paper presents the evaluation of seismic...

Economic Impact of Earthquake Effects on the City of Everett's Lifelines
The economic effects of lifelines failures, caused by three hypothesized earthquake scenarios, in the city of Everett, Washington are estimated. The project team consists of lifeline seismic...

 

 

 

 

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