Report of National Workshop on RELIABILITY CONCEPTS IN CIVIL ENGINEERING AND STRUCTURAL STABILITY
Venue:
Block 3 Auditorium Day 1 Date: 22-02-2018
The workshop was inaugurated at 9:00 a.m. with the
lighting of lamp by Fr. Antony Puthussery, Campus co-ordinator, Dr. Devraj,
Guest Speaker, Prof. Raghunandan Kumar, HOD Department of Civil Engineering,
Dr. Arvind H.B, Dr. Narasimha Murthy and CACE student representative. Prof.
Raghunandan Kumar welcomed the gathering, followed with the Presidential
Address by Fr. Antony Puthussery.
Session 1: Fundamental Concepts of Reliability by Dr.
Devraj
Dr. Devraj introduced the participants of the workshop to
the topic of reliability. He started with the evolution of codes,the central
role of the code is a set of requirements that must be satisfied by the
designer so that the designed structure will have minimum acceptable level of
safety.
Some highlights of his presentation were:
•
Structure has three filters- Stiffness (K),
Mass (M) of the material and the damping coefficient of the material (C).
•
Structural flaws and defects can be
eliminated by quality control and inspection.
•
Adverse effect on structure is time, over-loading,
human errors and low quality of materials.
•
On the uncertainties- divided into 2
parts:(a) Aletory - Data based
(b)Epistemic-
Knowledge based
•
Two types of probabilities: Objective and
Subjective.
•
Design Philosophy - In Allowable stress
design - resistance must be greater than load. Load factor design where the
loads must be multiplied by 1.5. R=strength and S=load if R>S it is safe,
R<S- fails, if R=S- limit state.
•
Concepts of reliability - In reliability we
have to determine performance function, concepts of reliability index.
Dr. Devaraj addressing the participants of
workshop
Session 2: Reliability
Analysis of Cable Stayed Bridges by Dr. R Ravindra
Dr. R Ravindra initially briefed the participants about
the cable stayed bridges, its components, arrangements of cables and pattern of
load transfer in cable stayed bridges. He explained on the analysis of cable
stayed bridges showing the results of his PhD Thesis.
Dr.
R Ravindra addressing the participants
of workshop
Session 3: Energy Concepts
and Analysis of Plates by Dr. K U Muthu
Dr. K U Muthu explained in detail the energy concepts
and analysis of plates. His presentation included the following concepts:
•
The three approaches of energy methods.
•
Strain energy due to buckling, shear and
energy method applied to buckling.
•
Calculation of load by energy method.
•
Analysis of plates for different boundary
conditions.
Dr. K U Muthu addressing the participants of
workshop
Venue: Block 2, Seminar
hall Day 2 Date: 23-02-2018
Session 4: Lateral
Torsional Buckling and Codal Provisions of IS 800-2007 by Dr. Aravind H B
Dr. Aravind H B explained on the importance of
stability in the design. He outlined on the elastic stability of structural
systems, section classifications, torsional effect, lateral torsional
bucklingand factors affecting section slenderness.
bucklingand factors affecting section slenderness.
Dr.
Aravind H B interacting with the participants of workshop
Session 5: Stability of
Beam Columns by Dr. Sunil Tengli
Dr. Sunil Tengli explained about the beam-column effect
in a portal frame, detailed on the failure of short columns due to material and
yielding, failure of long columns, behavior of column at ultimate load and
details of design procedure of beam columns.
Dr. Sunil Tengli addressing the participants of
workshop
The workshop concluded with the valedictory function.
Prof. Glady Jacob, Administrator, Kengeri Campus Christ (Deemed to be
University) addressed the gathering during this occasion and appreciated for
conducting such workshops. Prof. Srinidhi delivered the vote of thanks.
.JPG)
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