Civil Engineering Ph.D Scholar

Supervisor: Ramancharla Pradeep Kumar

Name: A. Vimala

Adderss:-

H.No. 12-1-79/5,
Bandlaguda, Nagole,
Hyderabad - 500068.
Email: vimala.a@research.iiit.ac.in

Area of Intrest & Research:

1. Improving the behavior and response of structural systems subject to earthquake hazards

2. Focus of research is on safety and reliability of high rise concrete structures;

Work Plan:

Seismic performance assessment or, simply, seismic structural analysis is a powerful tool of earthquake engineering which utilizes detailed modelling of the structure together with methods of structural analysis to gain a better understanding of seismic performance of building and nonbuilding strucures

For decades, the most prominent instrument of seismic analysis has been the earthquake response spectrum method which, also, contributed to the proposed building code's concept of today. However, such methods are good only for linear elastic systems, being largely unable to model the structural behavior when damage (i.e., non-linearity) appears. Numerical step-by-step integration proved to be a more effective method of analysis for multi-degree-of-freedom structural systems with significant non_linearity under a transient process of ground motion excitation.

Basically, numerical analysis is conducted in order to evaluate the seismic performance of buildings. Performance evaluations are generally carried out by using nonlinear static pushover analysis or nonlinear time-history analysis. In such analyses, it is essential to achieve accurate nonlinear modeling of structural components such as beams, columns, beam-column joints, shear walls etc. The individual components are then assembled to create a full nonlinear model of the structure. Thus created models are analyzed to evaluate the performance of buildings.

Future Work:

The most significant feature in the Seismic Design Criteria is a shift from a force-based assessment of seismic demand to a displacement-based assessment of demand and capacity. Thus, the newly adopted displacement approach is based on comparing the elastic displacement demand to the inelastic displacement capacity of the primary structural components while ensuring a minimum level of inelastic capacity at all potential plastic hinge locations.

Tutor:

Project Undertaken:

Publications:

"An experimental study on jute fibre reinforced concrete with partial replacement of cement by flyash”, National conference on ' Modern Concrete Materials and Construction Techniques' at Adhi parasakthi Engineering College, Melmaruvathur, Tamilnadu, 27th and 28th February, 2008, pp 60-64.

Conference Attended:

Workshop Attended: