SEISMIC ANALYSIS OF THE INDIANO CABLE-STAYED BRIDGE

By:
Paolo CLEMENTE1, Mehmet ÇELEBI2, Giovanni BONGIOVANNI1, Dario RINALDIS1

INTRODUCTION
Identification of dynamic characteristics of structural systems is an important step that is necessary for two basic reasons: − to assess possible dynamic behavior of structures during strong events and − to gain experience on the general dynamic characteristics of structural systems such that the experience and data base can be used in future design and analyses. Past efforts ....etc

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Many structures have their fundamental frequencies of vibration within the range
of frequencies where the energy of most of the earthquake ground motions is a maximum. In such cases a structure will amplify the ground vibrations and produce accelerations, which increases from the base of the structure to its top. Besides producing undesirable levels of acceleration in the structure, these amplified structural motions can cause large stresses in structural elements and large relative displacements between different parts of the structure. This ....etc

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Hi i am fathima ruksana i would like to get seminar report on seismic  behaviour of isolated bridges for the seminar presentation .... plz give me ....etc

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whole reports on seismic sensor ....etc

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plz give some introduction to seismic sensor..... ....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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SEISMIC RETROFITTING OF CONCRETE BUILDINGS

SEISMIC RETROFITTING

NEED FOR RETROFITTING

BUILDING DEFICIENCIES

STEPS TAKEN PRIOR TO RETROFITTING


NEED FOR RETROFITTING


MAKES BUILDING SAFER AND LESS PRONE TO DAMAGE

CONSTUCTION TECHNIQUES ARE IMPROVED

DURABILITY AND AESTHETIC APPEARANCE ARE REDUCED
AFTER DAMAGE

DEMANDS ON EXISTING STRUCTURES ARE INCREASING

UNEXPECTED EXTRA LOADS ARE TO BE CARRIED

MAKES IMPROVEMENTS TO AN ....etc

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SEISMIC SENSOR


D. MOHAN KUMAR



This circuit simulates a seismic sensor to detect vibrations/ sounds. It is very sensitive and can detect vibrations caused by the movement of animals or human beings. So it can be used to monitor protected areas to restrict entry of unwanted persons or animals. The circuit uses readily available components and the design is straightforward. A standard piezo sensor is used to detect vibrations/sounds due to pressure changes. The piezo element act ....etc

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DESIGN AND IMPLEMENTATION OF SEISMIC SENSOR


INTRODUCTION
1.1 Overview
There are two basic types of seismic sensors: inertial seismometers which measure ground motion relative to an inertial reference (a suspended mass), and strainmeters or extensometers which measure the motion of one point of the ground relative to another. Since the motion of the ground relative to an inertial reference is in most cases much larger than the differential motion withi ....etc

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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 est ....etc

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