Hyderabad - 500068.
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;
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
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.
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.
"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.