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Structural Cross-sections: Analysis and Designfawadnajam2021-08-15T08:22:07+00:00
NUST Institute of Civil Engineering (NICE) School of Civil and Environmental Engineering (SCEE) National University of Sciences and Technology (NUST) H-12, Islamabad, Pakistan
Structural Cross-sections: Analysis and Design
Authors: Naveed Anwar and Fawad Ahmed Najam ISBN-13: 978-0128044438, ISBN-10: 0128044438 DOI: https://doi.org/10.1016/C2015-0-01588-X Imprint: Butterworth-Heinemann, Elsevier Inc.
Structural Cross Sections: Analysis and Design provides valuable information on this key subject covering almost all aspects including theoretical formulation, practical analysis and design computations, various considerations and issues related to cross-sectional behavior, and computer applications for determination of cross-sectional response. The presented approach can handle all complex shapes, material behaviors and configurations. The book starts with a clear and rigorous overview of role of cross-sections and their behavior in overall structural design process. Basic aspects of structural mechanics are reviewed and procedures to determine basic cross-sectional properties, stress and strain distributions, stress resultants and other response parameters, are provided. A brief discussion about the role of material behavior in cross-sectional response is also included. The unified and integrated approach to determine axial-flexural capacity of cross-sections is utilized in development of P-M and M-M interaction diagrams of cross-sections of various shapes. The behavior and design of cross-sections subjected to shear and torsion is also included with emphasis on reinforced concrete sections. Several detailed flow charts are included to demonstrate the procedures used in ACI, BS and Euro codes for design of cross-section subjected to shear and torsion, followed by solved examples. The book also presents the discussion about various factors that can lead to ductile response of cross-sections, especially those made of reinforced concrete. The definition and development of action-deformation curves especially moment-curvature (-) curve is discussed extensively. Various factors such as confinement, rebar distribution and axial load effect on the ductility are shown through examples. The use of moment-curvature curve to compute various section response parameters is also explained though equations and examples. Several typical techniques and materials for retrofitting of cross-sections of reinforced concrete beams, columns and slabs etc. are reviewed. A brief discussion of various informative references related to the evaluation and retrofitting of structures is included for practical applications. Towards the end, the book provides an overview of various software applications available for cross-section design and analysis. A framework for the development of a general-purpose cross-section analysis software, is presented and various features of few commercially available software packages are compared using some example cross-sections.
Naveed Anwar is the Vice President (Knowledge Transfer) of the Asian Institute of Technology (AIT), Thailand. He is also serving as the Director of Asian Center for Engineering Computations and Software (ACECOMS) and Structural Engineering faculty at the Asian Institute of Technology (AIT), Thailand. He teaches academic courses to Masters and PhD students at AIT, related to modeling, analysis and design of tall buildings and bridge structures.
Fawad A. Najam is an assistant professor of structural engineering at the NUST Institute of Civil Engineering (NICE), National University of Sciences and Technology (NUST), Islamabad, Pakistan. He teaches academic courses to Masters and PhD students at NUST, related to structural dynamics and performance-based seismic design of structures. He is also associated with Department of Structural Engineering at Asian Institute of Technology (AIT) and AIT Solutions (AITS) in Thailand.
CE - 416: Earthquake Engineering
Description and Rationale
Pakistan is located on a highly earthquake-prone and seismically active part of the world. The country lies on a tectonically active Himalayan orogenic belt developed as a result of slow collision (extended over last 30-40 million years) among the Indian, Arabian, and Eurasian tectonic plates. This geological setting has resulted in a number of active seismic sources and faults in the region which are capable of producing moderate- to large-magnitude earthquakes. Besides having a high level of seismic hazard, the country is also confronted over the years with high rate of population increase and rapid growth of urbanization. With all these challenges and high seismic risk, there is an urgent need of equipping the civil engineering students with state-of-the-art information about seismic hazard, risk and its mitigation. This course aims to develop basic expertise and skill among UG students about various practical aspects of seismic design of buildings and structures. This course aims to develop basic expertise and skill among UG students about various practical aspects of seismic design of buildings and structures.
Course Contents
1) Introduction to Earthquake Engineering. Understanding the Seismic Hazard: Introduction to Seismology, Seismic Hazard Assessment
2) Introduction to structural dynamics: Equations of motions for SDF Lumped mass system, free vibrations, rigid body assemblages, Response of SDF system to harmonic, periodic and general dynamic loadings, Direct integration solution of SDF systems using time-stepping methods, MDF lumped mass system: shear building, classical modal analysis (Eigen-value analysis), calculation of natural frequencies, time periods and mode shapes of MDF systems
3) Seismic Analysis and Design of Structures: Equivalent static lateral force procedure and Calculation of base shear for given building frame system, Response spectrum analysis of buildings, Time history analysis of buildings, Seismic design of reinforced concrete structures, according to provisions of ACI, UBC/IBC. Detailing of reinforced concrete structures for earthquake resistance as per Code), General seismic design considerations: common mistakes in practice, regularity, lateral force resisting mechanisms and ductility.
4) Term Project: Seismic Design of a Multi-story Building: Use of any FEM software (ETABS 2016 or SAP 2000) for seismic design of structures
Textbooks, References and Reading Material
Textbooks: Lecture notes provided by instructor
Reference Books
1) W. F. Chen and C. Scawthorn (2003), Earthquake Engineering Handbook
2) P. M. Shearer (1999), Introduction to Seismology
3) S. L. Kramer (1996), Geotechnical Earthquake Engineering
4) A. Coburn and R. Spence, (2002), Earthquake protection
5) B. Bolt, Earthquakes
6) C. H. Scholz, The Mechanics of Earthquakes and Faultings
7) H. Tiedemann, Earthquake and Volcanic Eruptions: A Handbook on Risk Assessment
8) W. Hays, B. Mohammandioun and J. Mohammadioun, Seismic Zonation
9) T. Pauley and M. J. N. Priestley, Seismic Design of Reinforced Concrete and Masonry Buildings
10) R. W. Clough, and J. Penzien, (1993): Dynamics of Structures, McGraw-Hill, New York, 2nd Edition.
11) A. K. Chopra, (1995): Dynamics of Structures-Theory and Applications to Earthquake Engineering, Prentice Hall, New Jersey.
12) J. W. Smith, (1988): Vibration of Structures: Applications in Civil Engineering Design, Chapman and Hall, London.
13) T. R. Tauchert, (1974): Energy Principles in Structural Mechanics, McGraw-Hill, ISE.
14) H. Bachmann, and W. Ammann, (1987): Vibrations in Structures-Induced by Man and Machines, Series: Structural Engineering Documents. Vol. 3e. International Association for Bridge and Structural Engineering (IABSE), Zurich, Switzerland.
15) D. E. Newland, (1993): An Introduction to Random Vibrations, Spectral and Wavelet Analysis, Longman, 3rd Edition, London.
16) S. H. Crandall, and W. D. Mark, (1963): Random Vibration in Mechanical Systems, Academic Press, New York.
International Standards/Guidelines
1) TBI (2010): Guidelines for Performance-Based Seismic Design of Tall Buildings – PEER
2) FEMA 356 (2000): Pre-standard and Commentary for the Seismic Rehabilitation of Buildings
3) ATC-40 (1996) Seismic Evaluation and Retrofit of Concrete Buildings, USA
2) Title: “PBD Seminar and Workshop” – AIT Solutions (Youtube Channel)
Description: International Seminar and Workshop on Performance Based Design of Reinforced Concrete Buildings – 27-28 August 2013 – Hosted by the Asian Center for Engineering Computations and Software (ACECOMS) in collaboration with AIT Consulting.
5) Lecture Series on Performance Based Design: State of Practice for Tall Buildings
Description: A full playlist (presentations) from the 2014 Earthquake Engineering Research Institute (EERI) Technical Seminar Series – “Performance Based Design: State of Practice for Tall Buildings”.
Description: CSI founder and CEO Ashraf Habibullah talks during a one-day seminar titled “The theory and practice of Performance-Based Design: The Future of Earthquake Engineering.”
Links:
i. The 4 performance levels in PBD
ii. Nonlinear analysis and energy dissipation
iii. Animations in structural engineering
iv. Strength and deformation of tall structures
v. The Advantage of a Ritz Analysis over an Eigen Analysis in Dynamics
vi. The Power of Virtual Work in Deflection Control of Structures
vii. Optimization in Design of Large Steel Structures
8) IRIS Earthquake Science (Youtube Channel)
Description: Official YouTube channel of Incorporated Research Institutions for Seismology
Link: https://www.youtube.com/user/IRISEnO
Grading Scheme
Assignments + Quizzes: 20%
OHT Exams: 30%
Term Project: 10%
End Semester Exam: 50%
Total: 100%
Instructor
Dr. Fawad Ahmed Najam Assistant Professor (Structural Engineering) NUST Institute of Civil Engineering (NICE) School of Civil and Environmental Engineering (SCEE) National University of Sciences and Technology (NUST) H-12 Islamabad, Pakistan Cell: 92-334-5192533, Email: fawad@nice.nust.edu.pk Office No: 118, 1st Floor, NIT Building, SCEE, NUST
