Download - 2014 07 02 Dynamic Analysis

8/11/2019 2014 07 02 Dynamic Analysis

1/11

Dynamic Analysis oEngineering Struc

Naveen B.O.,Structural Engineer,

Bangalore.


2/11

ANALYTICAL STUDY CARRIED OU

COMPARATIVE STUDY ON ANALYSIS OF REGULAR AND IRREGULABUILDINGS IN HIGH SEISMIC ZONES

A COMPARATIVE STUDY ON ANALYSIS AND DESIGN OF BUILDINGS WRESISTING FRAMES AND DUAL SYSTEMS IN HIGH SEISMIC ZONES

EFFECT OF MASONARY INFILLS ON DYNAMIC BEHAVIOUR OSTRUCTURES.

DYNAMIC ANALYSIS OF HIGH RISE RC FRAMED STURCTURES WITH OU

EFFECT OF INTRODUCTING BASE ISOLATORS FOR FRAMED STRUCTSEISMIC ZONES.

ANALYSIS OF TRANSMISSION LINE AND TELE COMMUNICATION TOWE

STUDY ON BEHAVIOUR OF STEEL MOMENT RESISTING FRAMEWITHOUT BRACINGS.

STATIC AND DYNAMIC ANALYSIS OF CABLE STAYED BRIDGES

ANALYTICAL STUDY IS CARRIED OUT USING SOFTWARE TOOLS :

ETABS 9.7.4 , SAP 2000 , SAFE .


3/11

STATIC AND DYNAMIC ANALYSIS OF CSTAYED BRIDGES

Because of its aesthetic appeal, economic grounds and ease ocable-stayed bridge is considered as the most suitable construmid- and large bridges spanning from 200 m to about 1000 m.

These bridges proved more economic, for moderate spans, tsuspension or arch bridge forms.

The tallest cable-stayed bridge in the world, Millau Viaduct wpier 341 metres tall and roadway 270 metres high, spanning thFrance has been completed in December 2004. Millau Viadulength of 2460m with seven towers and eight spans


4/11

Objectives of Analytical Study

To study the behavior of Cable stayed Bridges of different shaand H shape ) for different spans of bridges.

Carrying out static and time history and Moving load analysisconfiguration of bridges.

To study Time period and Natural frequency for different mode

To study Maximum pylon deflection.

To study Longitudinal and lateral reaction at pylon bottom.


5/11

CABLE ARRANGEMETNS

Different types of cable-stayed bridges are discussed baarrangement of stay cables including harp, fan, and semi-fan.


6/11

Description of Cable stayed Bridg

Types of Cable Stayed Bridges

A Type

Type 1(110m)

Type 2(220m)

Type 3(320m)

H Type

Type 1(110)

Type2(220m)

Type3(320m)


7/11

LOADING FOR ANALYSIS

Time History Analysis Data:

Input - ELCENTRO-Earthquake

Peak ground acceleration v/s Time

Location California 18thMay 1940

Magnitude- 6.7

Duration 31.1sec

Acceleration time Medium

Moving Load Analysis:

Code IRC -6 Class AA Tracked Vehicle

4 lanes of width 3.75 m and Gap 2.875m


8/11

TYPICAL CABLE STAYED BRIDGE MO

H-Shape pylon with span of 220mts and Pylon Height of span/4


9/11

CONCLUIONS BASED ON ANALYTI

STUDY

Time period of vibration of cable-stayed bridges (under static load) increasin span and decreases with decrease in height of pylon. Pylon shape does noany significant effect on the time period.

The frequency of vibration of cable-stayed bridges under dead load is hSpan, pylon height does have with decrease in pylon height, and frequ

increase. Pylon shape does not have any considerable effect on the frequen It can be observed that for pylon heights of span/3, the pylon top deflection

of A-pylons and less in case of H pylons. Thus, it can be accurately inferredpylons have higher stiffness that itsA-shaped pylons. In all other cases it fou

It can be noticed that the maximum deflection of deck increases with increirrespective of pylon shape and pylon height


10/11

REFERENCES

Surhang Zaden O., Comparison between three types of cable stayed Bridgestructural optimization The University of Western Ontario Landon, Ontariooctober 2012.

Maral Poser, Cable stayed Structures and stay cable Technology case studyAsia, and the Proposed First New Zealand Project -2005.

Yi-Lung Kang and Yang-Cheng Wang,

Approximate analysis of cable-stayesubjected to static wind loading Chinese Military Academy, Taiwan, china-1

M.J. Fadaee, M Vajdian, Parametric Evaluation of Cable Stayed Bridges witPush Over Analysis Shaheed Bahonar University, Kerman, Iran, Paper ReferNumber:0702-999, may 12-17,2011


11/11

EXTENSION OF RESEARCH STUD

STUDY OF ABUTMENT-PILE-SOIL INTERACTION OF PSC BRUNDER SEISMIC LOADS

Download - 2014 07 02 Dynamic Analysis

Top Related