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Civil Engineering (MS by Research Scholar)  

Supervisor: Ramancharla Pradeep Kumar

Name: P. V. S. Neelima

Year of Joining:  August 2011


Type-III, 5B,
Central Revenue Quarters,
Visakhapatnam – 530 020
Email: patnala.neelima@research.iiit.ac.in or neelu.patnala20@gmail.com

Area of Interest & Research:

Seismic behaviour of RC frames with Unreinforced brick masonry infill walls, Seismic behaviour of soft storey, weak storey and short column effect due to infill walls, Performance based design of RC frames with infill walls, Seismic behaviour of historical masonry, Seismic evaluation and retrofitting of RC frames

Research Area:

Critical issues in seismic behaviour of RC frames with unreinforced brick masonry infill walls and design considerations associated with it.


India is a country which is made up of multiple traditions and culture which get reflected in every aspect of life. Brick masonry is the traditional material used for construction of walls which are load bearing and also to enclose in RC moment resisting frames. The use of brick masonry is inevitable due to the ease in construction, availability of material and availability of good workmanship. Along with this, referring to the seismicity of the country, low to high magnitude earthquakes are also inevitable. In this regard, the knowledge of seismic behaviour of brick masonry infill walls is a necessary aspect in order to contribute to the growing technology especially in higher seismic zone areas. One of the unavoidable problems of practical construction is the open ground storey problem. The recommendations given in existing IS: 1893-2002 are required to be verified in the present scenario. Hence a case study is carried to verify the sufficiency of the provided recommendations in the present standard code of practice which has shown the inadequacy of the clause given. Similarly, the weak storey and short column effect are also checked with similar case studies carried out.

Computational Methodology:

Applied Element Method (AEM) developed by Hatem, 1998 was used for the numerical modeling of RC frame with unreinforced brick masonry infill walls. It is a discrete element method formulated using a pair of virtual springs connected between any two discrete elements. The resultant stress due to the applied loading on the spring is observed and its effect is calculated at the centre of the element where three degrees of freedom are defined. A final global stiffness matrix is formulated using the local stiffness generated from a pair of elements. The resultant displacements are calculated using the basic equation KU=F 

Teaching Assistance:

Structural Dynamics and Earthquake Engineering

Project Assistance:

Provided assistance for three B.Tech students on “Dynamic analysis and design of reinforced concrete residential building”

Worked as research assistant to Prof. Pradeep Kumar in preparing the draft for “Unified Structural Concrete Code”, submitted to Bureau of Indian Standards (BIS).



Structural  Engineering