JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Pre-requisites

Structural Dynamics, Reinforced Concrete Design

Course Objectives:

• 1. To explain the possible causes for earthquakes understanding seismology
• 2. To understand the principles of earthquake resistant design of RC and masonry buildings
• 3. To learn to evaluate base shears using IS methods
• 4. To detail the structural members for ductile requirements

Course Outcomes

After completion of the course, students should be able to:

• 1. Predict the sources of earthquakes understanding seismology and conceptually design the buildings
• 2. Apply the Response Spectrum Analysis Method and static equivalent method for the determination of lateral loads on the buildings
• 3. Apply ductility requirements for the design of structural components
• 4. Assess seismic performance of non-structural components and structural components and identify effective measures to mitigate potential damage

UNIT - I

Engineering Seismology: Earthquake phenomenon cause of earthquakes-Faults- Plate tectonics- Seismic waves- Terms associated with earthquakes-Magnitude/Intensity of an earthquake-scales- Energy released-Earthquake measuring instruments-Seismoscope, Seismograph, accelerograph- Characteristics of strong ground motions- Seismic zones of India. Introduction-Functional planning-Continuous load path-Overall form-simplicity and symmetry-elongated shapes-stiffness and strength - Seismic design requirements-regular and irregular configurations-basic assumptions.

UNIT - II

Conceptual Design - Horizontal and Vertical Load Resisting Systems - System and Members for Lateral Loads and High Rise / Tall Structures. Twisting of Buildings – Flexible Building and Rigid Building Systems. Strength and Stiffness – Ductility – Definition – Ductility Relationships – Choice of construction Materials – Unconfined Concrete & Confined Concrete - Design Earthquake Loads – Basic Load Combinations – Permissible Stresses. Seismic Methods of Analysis – Static Method – Equivalent Lateral Force Method. Dynamic Analysis – Response Spectrum Method.

UNIT - III

Introduction to Earthquake Resistant Design – Seismic Design Requirements and Methods. RC Buildings – IS Code based Method.- Vertical Irregularities – Mass Irregularity Torsional Irregularity - Plan Configuration Problem - Design Lateral Force, Base Shear Evaluation – Lateral Distribution of Base Shear – Structural Walls Strategies and the Location of Structural Walls – Sectional Shapes – Behaviour of Unreinforced and Reinforced Masonry Walls – Behaviour of Walls Box Action and Bands – Behaviour of infill Walls - Non Structural Elements – Failure Mechanism of Nonstructural Elements – Effects of Nonstructural Elements on Structural System – Analysis – Prevention of Damage to Nonstructural Elements – Isolation of Non-Structures.

UNIT - IV

Design of Shear walls: Classification according to Behavior, Loads in Shear walls, Design of Rectangular and Flanged Shear walls, Derivation of Formula for Moment of Resistance of Rectangular Shear walls – Behaviour of Coupled Shear Walls.

UNIT - V

Ductility Considerations in Earthquake Resistant Design of RC Buildings: Introduction- Impact of Ductility- Requirements for Ductility- Assessment of Ductility- Factors affecting Ductility- Ductile detailing considerations as per IS 13920. Behavior of beams, columns and joints in RC buildings during earthquakes-Vulnerability of open ground storey and short columns during earthquake. Capacity Based Design: Introduction to Capacity Design, Capacity Design for Beams and Columns- Case studies.

REFERENCES:

• 1. Earthquake Resistant Design of structures – S. K. Duggal, Oxford University Press
• 2. Earthquake Resistant Design of structures – Pankaj Agarwal and Manish Shrikhande, Prentice Hall of India Pvt. Ltd.
• 3. Seismic Design of Reinforced Concrete and Masonry Building – T. Paulay and M.J.N. Priestly, John Wiley & Sons
• 4. Masory and Timber structures including earthquake Resistant Design –Anand S.Arya, Nem chand & Bros
• 5. Earthquake –Resistant Design of Masonry Building –Miha Tomazevic, Imperial college Press.
• 6. Design of Reinforced Concrete Structures by N. Subramanian, Oxford University Press.
• 7. Earthquake Tips – Learning Earthquake Design and Construction C. V. R. Murty

REFERENCE CODES:

• 1. IS: 1893 (Part-1) -2016. “Criteria for Earthquake Resistant – Design of structures.” B.I.S., New Delhi.
• 2. IS:4326-1993, “Earthquake Resistant Design and Construction of Building”, Code of Practice B.I.S., New Delhi.
• 3. IS:13920-2016, “Ductile detailing of concrete structures subjected to seismic force” – Guidelines, B.I.S., New Delhi. M. Tech in COMPUTER AIDED STRUCTURAL ENGINEERING II YEAR I – SEMESTER