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Seismic Design Considerations for Uplifted Tanks
An evaluation of the most commonly used seismic design procedures for unanchored tanks is presented. It is noted that current standards are inconsistent in predicting the behavior of unanchored...

Three-Dimensional Simulations of Ground Motions in Sedimentary Basins
This report describes work being done at the U.S. Geological Survey on 3-D simulations of earthquake ground motions in sedimentary basins. The ultimate goal of this research is to predict...

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...

Recent Improvements in the LLNL PSHA Methodology
For the purpose of comparison, the LLNL PSHA methodology is defined as the 1989 version developed under contract for the NRC. Additional work on a series of subsequent projects for DOE...

Fundamental Issues in Seismic Safety in Midwestern U.S. Due to Hazard/Vulnerability Relation
Problems in establishing and mitigating seismic risk in urban areas when seismicity is not confidently based on instrumental records are discussed. Urban Southwestern Ohio is a specific...

Seismic Standards for Existing Federally Owned and Leased Buildings
Public Law 101-614 requires the Interagency Committee on Seismic Safety in construction to develop 'standards for assessing and enhancing the seismic safety of existing buildings constructed...

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...

Things That Fall?Lessons from Some Construction Accidents and Structural Failures
The causes and results of several construction accidents are reviewed. The lessons to be learned from such a summary are that all too often the simplest oversight leads to catastrophic...

Diagnosing Lateral Strength of Existing Concrete or Masonry Buildings
A research prospectus is presented for improving present methods of structural evaluation for concrete and masonry buildings. Specifically, the proposed research plan is limited to strength...

Mitigation of Wind-Created Risks During Construction
Wind damage to structures during construction has been found to be significant and often catastrophic. Structural failures are often the result of wind loads that are far less than the...

MRT Cable Supported Roof
A cable supported roof structure for Chientan station (R18A) at Taipei Mass Rail Transit system's Tan-Sui line are under construction. Unique wind and cross sectional dynamic effect has...

Bonded Polyester Concrete Overlays Used in California
Bonded polyester concrete overlays have been very successful in California in restoring and preserving bridge decks from damage by road salts. The polyester concrete system has been employed...

Reliability of Highway Bridge Piers
Structural safety of reinforced concrete bridge piers supporting highway traffic is studied. Reliability indices for flexure, shear, and combined flexure and axial load limit states at...

After-Fracture Response of a Two-Girder Steel Bridge
The I-40 bridges over the Rio Grande are due to be razed in mid 1993 due to geometry and traffic safety considerations. The bridges are classified as 'fracture critical' two girder steel...

Development of an Improved Rapid Seismic Analysis Procedure
New developments in computer capabilities and lessons learned from recent earthquakes have facilitated improvement of the Rapid Seismic Analysis Procedure (RSAP) currently specified in...

How to Include Reliability Constraints in Structural Optimization
Structural optimization is a complex process made of design cycles aimed at finding the best possible solution. At each design cycle ultimate and/or serviceability limit states must be...

Structural Analysis in Context
The issues of what student should learn about structural analysis and how it should be taught are explored considering the purposes of structural analysis in engineering practice and the...

Development in Criteria for Dam Corrective Actions
Reviewed is the recent history of the Bureau of Reclamation (Reclamation) Safety of Dams (SOD) Program. Particularly, the development of decision philosophies and technical approaches...

Inspections, Evaluations and Modifications for Corps of Engineers Dams
The Corps of Engineers owns and operates 580 dams in the United States. As these dams become older (199 are over 50 years old), dam safety and modifications play an increasing role in...

 

 

 

 

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