Seismic Retrofit of San Francisco-Oakland Bay Bridge West Crossing

1998 ◽  
Vol 1624 (1) ◽  
pp. 73-81 ◽  
Author(s):  
Mark L. Reno ◽  
Martin Pohll
Keyword(s):  
San Francisco ◽  
Seismic Retrofit ◽  
Design Criteria ◽  
Department Of Transportation ◽  
California Department ◽  
Analysis And Design ◽  
Overall Design ◽  
San Andreas ◽  
Toll Plaza ◽  
The City

From the toll plaza on the Oakland shores through the approach structures in San Francisco, the San Francisco—Oakland Bay Bridge, built at a cost of $78,000,000 in 1937, is an engineering marvel that carries over a quarter-million vehicles per day. Because of the different segments of the bridge and their inherent vulnerabilities, retrofitting was assigned to several groups within the California Department of Transportation. Briefly described are the analysis and design of the seismic retrofit of the West Crossing, which spans San Francisco Bay between the city of San Francisco and Yerba Buena Island. From the outset of this project, the goal was to keep the bridge in service following a magnitude 8.0 earthquake from the nearby San Andreas fault. Included in this discussion is a summary of analytical and engineering procedures used to model the seismic behavior and the performance of this complex, important structure. In addition there is some insight into the various levels of analysis that were utilized so that the project-specific performance-based design criteria could be met. Furthermore, there is discussion of how energy dissipation through foundation rocking and the use of viscous dampening devices made the overall design objective obtainable. Finally, there is some discussion on the retrofit details used to ensure compliance with the design criteria.

scholarly journals DESAIN HALTE BIS SURABAYA DENGAN TEMA IKONIK

2021 ◽  
Vol 9 (2) ◽  
pp. 12
Author(s):  
Yohanes Firananta Setyo Atmono
Keyword(s):  
Public Interest ◽  
Public Transport ◽  
Public Transportation ◽  
Concept Design ◽  
City Branding ◽  
Department Of Transportation ◽  
Overall Design ◽  
Bus Stop ◽  
Bus Stops ◽  
The City

Bus shelter for public transport in Surabaya has been made to accommodate the needs of the Department of Transportation and government city. This facilities built to attract public interest to using public transportation. Currently, several shelter Surabaya Bus have been built, but the existing conditions of the bus stops have not met the requirements. Therefore it is necessary to design a Surabaya bus stop that offers convenience, security and most importantly introduces the city of Surabaya both for tourist purposes and for city branding. There is a need for shelters that are designed aesthetically, comfortably and the most important thing is that users feel safe when they are at bus stops. Designed by paying attention to the overall design principles, namely the character of the user, both disabled and normal, user activities and support facilities. Exterior and interior bus shelter concept design use tropical and iconic ornaments from Surabaya iconic places

scholarly journals SAN FRANCISCO'S SOUTHWEST OCEAN OUTFALL

1982 ◽  
Vol 1 (18) ◽  
pp. 146 ◽  
Author(s):  
Y. Eisenberg ◽  
D.D. Treadwell
Keyword(s):  
San Francisco ◽  
Active Fault ◽  
Major Element ◽  
Fault Zones ◽  
Clean Water ◽  
San Andreas ◽  
Ocean Outfall ◽  
The City ◽  
Design And Construction

The Southwest Ocean Outfall, with an overall length of 23,400 feet and a capacity of 450 million gallons per day, will be a major element of the Clean Water Program of the City and County of San Francisco, California, U.S.A. Offshore, the Outfall will cross one of the world's major active fault zones, the San Andreas. Outfall construction started in 1981 and is scheduled to be completed by early 1985. The shoreward 3,000 feet is being built from a pile-supported trestle; offshore, the Outfall conduit sections will be placed using a barge designed and built specifically for the project. Oceanographic, coastal, geotechnical, and seismic conditions pertinent to design are presented along with discussions of specific Outfall design and construction features.

The Florida Pier Analysis Program Methods and Models for Pier Analysis and Design

1997 ◽  
Vol 1569 (1) ◽  
pp. 1-7 ◽  
Author(s):  
Marc Hoit ◽  
Cliff Hays ◽  
Mike McVay
Keyword(s):  
Model Development ◽  
Analysis Tool ◽  
Department Of Transportation ◽  
Analysis Program ◽  
University Of Florida ◽  
Analysis And Design ◽  
Overall Design ◽  
Florida Department ◽  
Nonlinear Static ◽  
The University

The Florida Pier Analysis Program (FLPIER) was developed by the University of Florida Department of Civil Engineering in conjunction with the Florida Department of Transportation (FDOT) Structures Division. The program was developed in order to give pier designers a comprehensive model development and analysis tool to optimize pier designs. The current version is a nonlinear, static, soil-structure interaction suite of programs that run on a personal computer and include group pile effects, layered soil, pier columns and cap, high mast lighting, sound, and retaining walls. The program was designed to allow input to be specified graphically using “designer variables” such as spacing, offsets, number of columns, and so forth. Its use has reduced the time for model development and analysis from days to under an hour. The numerical modeling techniques used have been compared with experimental data and give highly accurate results leading to an improved overall design and reduced costs.

Public Information Activities To Mitigate the Impacts of Closing San Francisco’s Central Freeway

1998 ◽  
Vol 1632 (1) ◽  
pp. 68-77 ◽  
Author(s):  
John W. Billheimer ◽  
Juliet McNally ◽  
Doug Sibley ◽  
Gerald Robbins
Keyword(s):  
San Francisco ◽  
Large Scale ◽  
Public Information ◽  
California Department ◽  
Seismic Safety ◽  
The Public ◽  
Information Program ◽  
Before And After ◽  
The Media ◽  
The City

San Francisco’s Central Freeway, which carried 93,000 commuters a day over Market Street into the Hayes Valley/Western Addition neighborhood, was shut down on August 25, 1996, so the freeway’s upper deck could be demolished as a first step in improving the seismic safety of the structure. Anticipating disastrous traffic tie-ups, local newspapers characterized the construction period in advance as “six months of traffic hell.” In an effort to mitigate the effects of the closure, the California Department of Transportation and the city of San Francisco developed a mitigation plan and implemented a wideranging public information program that included direct mailings of brochures detailing alternative travel patterns to commuters observed using the freeway. On the first day after the closure, the media braced for disaster and sent reporters to cover the expected traffic jams. When none occurred, the absence of backups became news, and politicians questioned whether the freeway was really needed. Commuters had heeded the advice of the public information campaign and spread themselves over enough routes and modes to avert large-scale delays. However, the diverted traffic brought additional congestion, delays, and potentially more accidents to the city streets in the vicinity of the freeway. The traffic patterns before and after closure are documented here, and the effectiveness of the public information program in influencing these patterns is assessed.

‘Imagined San Francisco’: Unpacking Urban Regime Theory through Interactive Cartography

2017 ◽  
Vol 11 (1) ◽  
pp. 126-143
Author(s):  
Ocean Howell
Keyword(s):  
San Francisco ◽  
Political Power ◽  
Regime Theory ◽  
Commercial Development ◽  
Urban Regime Theory ◽  
Digital Mapping ◽  
Urban Regime ◽  
Historical Processes ◽  
The City ◽  
Interactive Cartography

American urban historians have begun to understand that digital mapping provides a potentially powerful tool to describe political power. There are now important projects that map change in the American city along a number of dimensions, including zoning, suburbanization, commercial development, transportation infrastructure, and especially segregation. Most projects use their visual sources to illustrate the material consequences of the policies of powerful agencies and dominant planning ‘regimes.’ As useful as these projects are, they often inadvertently imbue their visualizations with an aura of inevitability, and thereby present political power as a kind of static substance–possess this and you can remake the city to serve your interests. A new project called ‘Imagined San Francisco’ is motivated by a desire to expand upon this approach, treating visual material not only to illustrate outcomes, but also to interrogate historical processes, and using maps, plans, drawings, and photographs not only to show what did happen, but also what might have happened. By enabling users to layer a series of historical urban plans–with a special emphasis on unrealized plans–‘Imagined San Francisco’ presents the city not only as a series of material changes, but also as a contingent process and a battleground for political power.

San Francisco's Vision for the Future: An Integrated Urban Wastewater Management Plan

2009 ◽  
Vol 4 (1) ◽  
Author(s):  
Jonathan W. Loiacono ◽  
Chu-Fei H. Ho ◽  
Natalie V. Sierra ◽  
Domènec Jolis ◽  
Carolyn Chiu ◽  
...  
Keyword(s):  
San Francisco ◽  
Planning Process ◽  
Rainwater Harvesting ◽  
Control Plant ◽  
Management Plan ◽  
Urban Setting ◽  
Wastewater Management ◽  
Urban Watershed ◽  
Aging Infrastructure ◽  
The City

The City and County of San Francisco (“City”) embarked upon a 30-year master planning process in part prompted by public concerns related to the neighbourhood impacts of the Southeast Water Pollution Control Plant (SEP). The Sewer System Master Plan, as it is called, developed a long term Integrated Urban Watershed Management Plan for the City's treatment plants and collection system. This paper focuses on the planning framework and public input to the process, particularly as it relates to proposed changes to the SEP. The resulting improvements address issues of replacing aging infrastructure, eliminating odor emissions, and visually screening the treatment plants that are situated within an urban setting. The recommended project addresses the needed repair of the existing infrastructure; and proposes that the City move towards an integrated urban watershed approach, initially through localized rainwater harvesting and opportunistic water reclamation.

PALEOSEISMIC EXCAVATIONS ACROSS THE SAN ANDREAS FAULT ON THE SAN FRANCISCO PENINSULA, WOODSIDE, CALIFORNIA

2018 ◽  
Author(s):  
Carol S. Prentice ◽  
◽  
Robert R. Sickler ◽  
Kevin B. Clahan ◽  
Alexandra Pickering ◽  
...  
Keyword(s):  
San Francisco ◽  
San Andreas Fault ◽  
San Andreas

The Resilient City

2005 ◽  
Keyword(s):  
World War Ii ◽  
Los Angeles ◽  
San Francisco ◽  
World Trade Center ◽  
Religious Faith ◽  
Oklahoma City Bombing ◽  
Late 20Th Century ◽  
Ancient City ◽  
Trade Center ◽  
The City

In 1871, the city of Chicago was almost entirely destroyed by what became known as The Great Fire. Thirty-five years later, San Francisco lay in smoldering ruins after the catastrophic earthquake of 1906. Or consider the case of the Jerusalem, the greatest site of physical destruction and renewal in history, which, over three millennia, has suffered wars, earthquakes, fires, twenty sieges, eighteen reconstructions, and at least eleven transitions from one religious faith to another. Yet this ancient city has regenerated itself time and again, and still endures. Throughout history, cities have been sacked, burned, torched, bombed, flooded, besieged, and leveled. And yet they almost always rise from the ashes to rebuild. Viewing a wide array of urban disasters in global historical perspective, The Resilient City traces the aftermath of such cataclysms as: --the British invasion of Washington in 1814 --the devastation wrought on Berlin, Warsaw, and Tokyo during World War II --the late-20th century earthquakes that shattered Mexico City and the Chinese city of Tangshan --Los Angeles after the 1992 riots --the Oklahoma City bombing --the destruction of the World Trade Center Revealing how traumatized city-dwellers consistently develop narratives of resilience and how the pragmatic process of urban recovery is always fueled by highly symbolic actions, The Resilient City offers a deeply informative and unsentimental tribute to the dogged persistence of the city, and indeed of the human spirit.

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