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Evaluation of US Seismic Code Provisions for Asymmetric-Plan Systems
The effects of plan asymmetry on the earthquake response of code-designed, one-story systems are identified with the objective of evaluating how well these effects are represented by torsional...

Earthquake Resistant Design and Construction of Reinforced Concrete Buildings. The Practice in Mexico After 1985
The evolution of the design and construction practice of reinforced concrete buildings in Mexico is presented in terms of materials, structural systems, member design and reinforcement...

Techniques for Seismic Rehabilitation of Buildings in Mexico City
The 1985 earthquake in Mexico City caused collapse or damage of a large number of engineered buildings. After this event several hundreds of buildings were retrofitted using several techniques....

Seismic Upgrade Design of Buildings
Building owners and users in seismically prone areas are becoming increasingly aware of the potential risks associated with the seismically hazardous buildings in the region specially...

Seismic Condition Assessment of the San Francisco-Oakland Bay Bridge
The project summarized here was initiated at the University of California at Berkeley to study seismic behavior of the San Francisco-Oakland Bay Bridge and to develop recommendations for...

Effect of First-Story Shearwalls on Earthquake-Resistant Buildings
A Practical system for earthquake-resistant building design is described. The system utilizes Teflon sliders at the top of the first story framed shearwalls to carry a portion of the superstructure....

Dynamic Field Response Studies and Earthauqke Instrumentation of the Meloland Road Overcrossing
Ambient vibration data was obtained at the Meloland Road Overcrossing near El Centro in California by The California Department of Transportation (CALTRANS) as part of a 1978 Federal Highway...

Modeling Bridge Abutment Stiffness for the Meloland Road Overcrossing
A simplified equivalent spring model representing the dynamic stiffness of a highway bridge abutment system is developed for use in seismic response studies. It is based on linear elastic...

Dynamic Soil-Foundation Interaction at the Meloland Road Overcrossing
Forced vibration tests, using a hydraulic ram device, were conducted on the Meloland Road Overcrossing (MRO) bridge over Interstate 8 near El Centro, California. Dynamic response data...

System Identification of the Meloland Overcrossing Using Static and Dynamic Field Data
A system identification study was performed using a computer finite element bridge model and measured static and dynamic response data obtained from full-scale quick-release ram field...

Seismic Analysis of Meloland Road Overcrossing Using Calibrated Structural and Foundation Models
A detailed seismic analysis of the Meloland Road Overcrossing is being implemented to study the response of this bridge during the 1979 Imperial Valley Earthquake. This analysis is based...

Lifeline Structure Design Issues?A Case Study of Current Bridge Seismic Design and Application of Recent Seismic Design Research
The purpose of this paper is to present the major design issues addressed in the design of Terminal Separation (Replace) and I-880 Reconstruction. To address these issues Caltrans set...

Tension Pile Test
The California Department of Transportation is conducting FULL SCALE AXIAL LOAD TESTS of 34 piles. This research project/proof test is being jointly conducted by public agencies (Caltrans...

San Francisco Bayshore Viaduct Seismic Retrofit
The Bayshore Freeway viaduct is located in the city of San Francisco and serves as a vital transportation link between the Bay Bridge and points south along Highway 101. This structure...

Link Length Design and EBF Seismic Performance
Twenty eccentrically braced frames (EBFs) are designed using the current seismic design code and newly developed step-by-step design procedure. The EBFs have a variety of link lengths...

Cyclic Behavior and Seismic Design of Steel Base Plates
The objectives of this study were to conduct realistic experiments to understand cyclic behavior of steel column base plates and to develop seismic design recommendations. Six specimens...

Some Unresolved Issues in Seismic Steel Codes
In the latest revisions of the three major U.S. seismic codes (AISC, NEHRP, UBC) some requirements can be questioned because of limited knowledge. Confining attention to conventional kinds...

The European Approach to Seismic Design of Engineered Timber Constructions: The Case of Low-Dissipative Structures
In the present paper the importance of the dissipated energy on the actual structural behaviour of low-dissipative structures as glulam portal frames with mechanical fasteners under seismic...

Wind Design and Analysis for the Normandy Bridge
The Normandy Bridge will represent an important progress in the field of cable-stayed bridges, with a main span 856-metre long. This paper explains how the design has been oriented to...

Aeroelastic Study of Long Span Suspension Bridges: the Messina Crossing
This paper deals with wind actions on long-span suspension bridges. Particular reference is made to the Messina Strait Crossing. Problems encountered in this study, both for deck and towers,...

 

 

 

 

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