SEISMIC ANALYSIS OF BRIDGES USING DISPLACEMENT-BASED APPROACH

By Chung C. Fu and Hamed AlAyed, University of Maryland

ABSTRACT
Nonlinear Static (Pushover) Procedure is specified in the guidelines for seismic rehabilitation of buildings presented by FEMA-273 (1997) as an analytical procedure that can be used in systematic rehabilitation of structures. However, those guidelines were presented to apply the Displacement Coefficient Method, which implements the well-known equal displacement rule with some modifications to esti ....etc

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Introduction
The zero-cross family of optically isolated triac drivers is an inexpensive, simple and effective solution for interface applications between low current dc control circuits such as logic gates and microprocessors and ac power loads (120, 240 or 380 volt, single or 3-phase). These devices provide sufficient gate trigger current for high current, high voltage thyristors, while providing a guaranteed 7.5 kV dielectric withstand voltage between the line and the control circultry. An integrated, ze ....etc

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i found there is two similar pages talking about Seismic Analysis Of Structures in
http://seminarsprojects.net/Thread-seismic-analysis-of-bridges-using-displacement-based-approach-full-report
http://seminarsprojects.net/Thread-seismic-analysis-of-the-cable-stayed-bridge-full-report ....etc

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i need a ppt and a brief description.. ....etc

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Bridges are lifeline structures. They act, as an important page link in surface transportation network and failure of bridges during a seismic event will seriously hamper the relief and rehabilitation work. There are many cases of damage of bridges in the past earthquakes all over the world. Due to their structural simplicity, bridges are particularly vulnerable to damage and even collapse when subjected to earthquakes. The fundamental period of vibration of a majority of bridges is in the range of 0.2 to 1.2 second. In this range, the structur ....etc

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Abstract:
In this seminar the analysis of soil-structure interaction effects and of multiple support excitation on the seismic response of long-span cable-supported bridges are presented. The purpose of this seminar is to provide a better understanding of the dynamic performance of cable supported bridges under earthquake excitation, considering the spatial variability of the ground motion and the complex phenomena of soil-bridge interaction, so that such effects can be included in the design and rehabilitation process. Amplification of struct ....etc

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Abstract:
This seminar is intended to evaluate the applicability of Nonlinear Static Procedure by implementing the Displacement Coefficient Method to bridges. For comparison purposes, the Nonlinear Dynamic Procedure (or nonlinear time-history analysis), which is considered to be the most accurate and reliable method of nonlinear seismic analysis, is also performed. A three-span bridge of 97.5 meters (320 ft) in total length was analyzed using both the Nonlinear Static Procedure/Displacement Coefficient Method and nonlinear time-history. Nine t ....etc

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i have detailed information of seminar on seismic behavier of isolated bridges,also report on this topic.this is needed me for college work. ....etc

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enhancement of voltage quality in isolated power systems,due to which i need some technical support from you in providing the PPTS,PDFS regarding above mentioned topic.
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