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 EXISTING BUI ....etc

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More Info About project-seismic sensor

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 straight forward.A standard piezo sensor is used to detect vibrations/sounds due to pressure changes.

The piezo element acts as a small capacitor having a capacitance of a few nano ....etc

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hi
you can refer these pages to get the details on seismic sensor

http://seminarsprojects.net/Thread-seismic-sensor

http://seminarsprojects.net/Thread-project-seismic-sensor

http://seminarsprojects.in/attachment.php?aid=6808 ....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 esti ....etc

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This article is presented by:
MUSTHAFA SHAJU P
SANJAY BABU
S.V DINESHIKA
SOUMYAEVALUATION OF SEISMIC PERFORMANCE OF MULTI
STOREY BUILDINGS

ABSTRACT
After the Bhuj earthquake, seismic retrofitting of multi storey buildings ha ve received considerable attention. Most buildings have been designed to withstand gravity loads only. Therefore it is required to identify the deficiencies for seismic performance and provide suitable retrof ....etc

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SEISMIC ANALYSIS OF THE INDIANO CABLE-STAYED BRIDGE

By:
Paolo CLEMENTE1, Mehmet ELEBI2, 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 in dete ....etc

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SEISMIC SENSOR


INTRODUCTION :-

The word seismic is derived from the Greek word, seism s, meaning shaking or quake.
A seismic sensor is a device that uses the piezoelectric effect to measure pressure, acceleration, strain or force by converting them to an electrical signal. 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 ....etc

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Seismic Waves and Inversion



What are Seismic Waves ???

1 Seismic waves are the vibrations from earthquakes that travel through the Earth

2 They are the waves of energy suddenly created by the breaking up of rock within the earth or an explosion .They are the energy that travels through the earth and is recorded on seismographs

History Cont

1 Around 132 AD, Chinese scientist Chang Heng invented the first seismoscope, an instrument that could register the occurrence o ....etc

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Explanatory Examples on Indian Seismic Code IS 1893


Problem Statement:
Consider a four-storey reinforced concrete office building shown in Fig. 1.1. The building is located in
Shillong (seismic zone V). The soil conditions are medium stiff and the entire building is supported on a raft
foundation. The R. C. frames are infilled with brick-masonry. The lumped weight due to dead loads is 12
kN/m2 on floors and 10 kN/m2 on the roof. The floors are to cater for a live load of 4 kN/m ....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 within a vault of reasonabl ....etc

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