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| | | | C. (Raj) Sundararajan, Ph.D., M.ASCE
Dr. Sundararajan has over 30 years of experience in the analysis and design of structures subjected to dynamic forces. He is President of EDA Consultants (formerly known as "Engineering Dynamics Associates"). Previously he held senior technical positions at Lummus Company, Foster Wheeler Corporation and Impell Corporation. He has published two books and over 50 technical papers, and authored numerous technical reports. He received ASME Best Paper Award in 1986. He has taught short courses for practicing engineers during the past 20 years. He has a B.E. in Civil Engineering from University of Madras, India, an M.E. in Civil Engineering from Indian Institute of Science, and a Ph.D. in Civil Engineering from University of Waterloo, Canada. | | | |
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| Back to Top | | | | | | Threat of bomb blasts at key government, business, industrial and large residential buildings has created a need to design these buildings to withstand intense dynamic loads generated by bomb blasts. Another similar problem is that due to accidental chemical explosions in petrochemical and other industrial facilities. Load computation, structural response analysis and structural design for both of these problems are similar. Therefore, these two topics are covered together in this course. This short course will teach you how to design steel and concrete structures to withstand bomb blasts and accidental chemical explosions. The course is divided into five parts: (1) Load computation, (2) Structural material behavior under intense, short-duration dynamic loads, (3) Structural response analysis, (4) Progressive collapse analysis, and (5) Structural design for bomb blasts and chemical explosions. A number of fully worked out examples will be presented. The detailed step-by-step analysis/design procedures illustrated in these examples will serve as a useful guide for your projects. Emphasis of the course is not on derivation of equations but on the use of relevant equations in practical problems. Numerical examples are solved throughout the course, and at the end the complete structural design of a steel and concrete building, from roof to foundation, is presented. Participants will have ample opportunity to interact with the instructor and discuss their questions. No prior knowledge of structural dynamic analysis is necessary. |
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| Back to Top | | | | | - Learn how to compute loads generated by bomb blasts or accidental chemical explosions
- Learn how to determine structural response to blast and explosion loads
- Understand structural material behavior under intense short-duration dynamic loads (it is different from behavior under static loads or usual dynamic operating loads)
- Learn how to perform progressive collapse analysis
- Design steel and concrete members (columns, beams, slabs,walls, foundations) subjected to bomb blasts and chemical explosions
- Receive a completely worked-out design example of a steel and concrete building, including step-by-step calculations
- Receive a comprehensive set of notes and books containing tables, charts and graphs necessary for the analysis and design
| Back to Top | | | | | Structural engineers, architects, contractors, building officials, facility managers, and owners who are involved or thinking about getting on board of this fast-growing type of construction. While some discussion topics are technical in nature, those who are not engineers will not be overwhelmed because the instruction is kept to an enjoyable and easy-to-understand level. | Back to Top | | | | | Structural engineers and engineering supervisors who are responsible for analyzing, designing or qualifying structures subjected to bomb blasts or accidental chemical explosions, as well as engineering supervisors and managers responsible for auditing, reviewing or approving such tasks will benefit from this course. No prior knowledge of structural dynamic analysis is necessary | Back to Top | | | | Summary Outline Day One: - Introduction
- Load Computation
- There are many commonalities between loads generated by bomb blasts and those by accidental chemical explosions in petrochemical and other industrial facilities. So these two cases are discussed together. Necessary equations, graphs and tables are provided. Several numerical examples are solved.
- Material Behavior (Steel and Concrete)
- Structural material behavior under intense, short-duration dynamic loads is different from that under normal operating loads. For example, strength of some materials under rapidly applied dynamic loads is higher than static strength. The differences in behavior are discussed with illustrative examples. Necessary graphs and charts are included in course material.
- Resistance - Deflection Curves
- Stress - Strain Curves
- Effect of Strain Rate
- Dynamic Strength Increase
- Deformation Limits
Day Two: - Structural Response Analysis
- Most blast/explosion response analyses are conducted by nonlinear methods. Either a "coupled global analysis" or a "member-by-member analysis" may be used. The former is often performed using finite element method. The course provides a basic discussion and references to nonlinear finite element analysis computer programs. Emphasis of the course is on "member-by-member analysis" technique that does not require knowledge of finite element method. Equations, graphs and tables required for this type of analysis are included in the class material. Approximations involved and where the method may and may not be used are discussed. Several example problems are solved to illustrate the procedure.
- Pressure-Impulse Diagrams and Damage Assessment Diagrams
- Development of Pressure-Impulse diagrams (P-I diagrams) and damage assessment diagrams and their use in structural design are discussed.
- Design of Structural Members
- Results of load computation, structural response analysis and material behavior are combined to present design of structural members (columns, beams, slabs, walls, foundations) subjected to bomb blasts or accidental chemical explosions. Several examples in reinforced concrete and steel design are presented.
Day Three: - Progressive Collapse Analysis
- Importance of progressive collapse analysis and government guidelines are discussed. Tie force method and alternate path method are presented along with illustrative examples of steel and concrete buildings.
- Case Histories and Lessons Learned
- Several examples of both failures and successes in the past are presented and lessons from these examples are discussed.
- Final Design Example
- Methods and examples presented in the previous sections are integrated into a complete design example of a steel/concrete building system. Detailed step-by step calculations are included in course material given to participants.
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