CASE (MS by Research Scholar)

Supervisor: Ramancharla Pradeep Kumar

Name: Chenna Rajaram

Adderss:-

NBH: C-14, IIIT Campus.
IIIT Hyderabad, Gachibowli,
Hyderabab 500 032.
Email:rajaram.chenna@research.iiit.ac.in

Area of Intrest & Research:

1. A STUDY OF POUNDING BETWEEN ADJACENT STRUCTURES

 Overview:

Collision of buildings or different parts of the building during vibration is called pounding. Pounding between closely spaced structures can be a serious hazard in seismically active metropolitan areas. One of the key issues is estimating the required separation distance to avoid or reduce pounding of adjacent structures that vibrate either elastically or inelastically. Series of dynamic time history analysis can estimate this distance by obtaining the maximum relative distance of the adjacent structures. The effect of pounding increases as the building height increases. When building heights do not match, the roof of the shorter building may pound at the mid height of the taller one, this can be very dangerous. This may happen not only in buildings but also bridges and towers which are constructed closely to each other. In bridges it happens between the two adjacent bridge decks. To avoid this effect we have to provide sufficient seated length between the decks or to provide shock absorbing devices between the decks and bearings under the extremities of the decks.

Most of the world regulations for seismic design do not take into account pounding phenomena. Some countries like Argentina, Australia, Bulgaria, Canada, France, Indonesia, Peru, Mexico, Taiwan and USA specify a minimum gap between adjacent buildings. The minimum separation gap depends on the height of building and on the flexibility of the building. The gap between buildings should exceed the maximum drift of each story.

Tutor:

Earthquake Engineering & Disaster Management (Spring-2011)

Advanced Structural Analysis (Monsoon-2010)

Finite Element Method (Spring-2010)

Structural Dynamics (Monsoon-2009)

Advanced Steel Design (Spring-2009)

Project Undertaken:

Preliminary Seismic Hazard Map of Peninsular India (Advisor: Neelima Satyam, Asst.Prof., Ramancharla Pradeep Kumar, Assoc.Prof. IIIT-H )

Vulnerability Assessment of Conveyor Belt at Mundra Port in Gujarat Region(Advisor: Ramancharla Pradeep Kumar, Assoc.Prof. IIIT-H )

Publications:

Chenna Rajaram and Ramancharla Pradeep Kumar: "Three Dimensional Pounding Analysis between Two Structures", Journal of Structural Engineering SERC-Chennai, Vol.**, No.** (submitted).

Chenna Rajaram and Ramancharla Pradeep Kumar: "Pounding Analysis of Adjacent Structures with Equal and Unequal Heights", Earthquake Spectra, Vol.**, No.** (submitted).

Chenna Rajaram and Ramancharla Pradeep Kumar., "Linear and Nonlinear Numerical Analysis of Pounding Between Adjacent Buildings", 8th International conference on Earth quake Resistant Engineering Structures, Chianciano Terme, Italy (Abstract accepted).

Chenna Rajaram and Ramancharla Pradeep Kumar., "Numerical Modeling of Pounding Between Adjacent Buildings: Some Corrections to Codal Provisions", Earthquake Engineering and Engineering Vibrations, Vol.**, No.** (submitted).

Chenna Rajaram and Ramancharla Pradeep Kumar., "Comparison of codal provisions on pounding between adjacent buildings", International Journal of Earthscience and En gineering (IJEE), Vol**, No**, (submitted).

Chenna Rajaram, Bodige Narender, Neelima Satyam and Ramancharla Pradeep Kumar., "Preliminary Seismic Hazard Map of Peninsular India", Proc. 14th Symposium on Earthquake Engineering, IIT Roorkee 2010, pp 497-491.

Conference Attended:

14th Symposium on EARTHQUAKE ENGINEERING on Dec 17-19th 2010 at IIT-Roorkee, Roorkee.

National Seminar on SEISMIC SAFETY OF CONCRETE GRAVITY DAMS on Feb 27th 2009 at New Delhi.

National Symposium on EARTHQUAKE SAFETY OF TALL BUILDINGS on Dec 16th 2008 at IIIT Hyderabad.

Workshop Attended:

National Workshop on COMPATIBILITY ISSUES BETWEEN CEMENT AND CHEMICAL ADMIXTURES IN CONCRETE on Sep 17th 2010 at IIIT-H, Hyderabad.

National Workshop on SEISMIC DESIGN OF EARTH STRUCTURES AND FOUNDATIONS FOR HIGH RISE BUILDINGS on Jun 26th 2010 at IIIT-H, Hyderabad.

National Workshop on REINFORCEMENT DETAILING AND FORMWORK on Apr 25th 2009, JNTU, Hyderabad.

National Workshop on DESIGN OF HIGH RISE BUILDINGS on Dec 16th 2008 at IIIT-H, Hyderabad.

National Workshop on FIRE SAFETY IN BUILDINGS on Mar 15th 2008 at Hyderabad.

Technical Lectures/Seminars Attended:

Technical lecture on ARTIFICIAL NEURAL NETWORKS FOR MODELING THE CHARACTERISTICS OF CONCRETE on Jan 29th 2011 by Prof. H. Sudarsana Rao, JNTU Anantapur at IIIT-H, Hyderabad.

Technical lecture on GEOTECHNICAL CHALLENGES IN INFRASTRUCTURE DEVELOPMENT IN INDIA: CASE STUDIES on Apr 26th 2010 by Prof. K S Rao, IIT Delhi at IIIT-H, Hyderabad.

Technical lecture on NEED FOR SPECIAL CONCRETES on Jan 18th 2010 by Prof. Ravindra Gettu, IIT Chennai at Hyderabad.

Technical lecture on WHY BRIDGES WILL COLLAPSE IN INDIA? on Aug 31st 2009 by Prof. C.V.R. Murty, IIT Hyderabad at IIIT-H, Hyderabad.

Technical Lecture on PREFABRICATION TECHNOLOGY FOR MASS HOUSING: SOME ISSUES on Jul 22th 2009 by Er. S. Eshwaraiah (Chief Engineer, AP State Housing Corporation) at IIIT-H, Hyderabad.

Technical Lecture on SPECIFYING CONCRETE FOR DURABILITY: ARE WE GETTING THERE? on Feb 13th 2009 by Dr. Ravindra K Dhir (University of Dundee) at IIIT-H, Hyderabad.

Seminar on SEISMIC MICROZONATION OF DELHI REGION on Nov 11th 2008 by Dr. Neelima Satyam at IIIT-H, Hyderabad.

Guest Lectures:

A guest lecture on EARTHQUAKE PREPAREDNESS to NAVODAYA SCHOOL TEACHERS on Nov 26th 2009 at Jawahar Navodaya Vidyalaya, Hyderabad.