Structural Analysis New Syallabus

 

Pokhara University Faculty of Science and Technology

Course Code: STR 252 (3 Credits) Full Marks: 100

Course title: Structural Analysis I (3-2-1) Pass Marks: 45

Nature of the Course: Theory & Practical Total Lectures: 45 hours

Level: Bachelor Program: BE

1. Course Description

   This course provides the basic concept and knowledge of structural analysis of statically determinate structure. It enables students to analyze statically determinate beam, frame, truss, arch and cable both by manual calculation as well as computer simulation.

2. General Objectives

   The general objectives of this course are:

   • To equip the students with the fundamental concept structural analysis and its practical application.

   • To familiarize the students with strain energy, virtual work, slope, deflection, influence line diagram, arch, cable and space truss.

     
     

3. Methods of Instruction

   Lecture, Tutorial, Discussion, Readings and Practical works

   
   

4. Contents in Detail

   
   

   Specific Objectives	Contents
   Know the types of structures, linearity and non-linearity of structural analysis, degree of static and kinematic indeterminacy, understand the role of structural analysis in structural engineering.	Unit I: Introduction (3 hrs)
   Determine the deflection of beams, frames and truss of the structure by work-energy method.	Unit II: Deflection of Beams, Frames and Trusses: Work-Energy Methods (12 hrs)

   1. Introduction to structural analysis

   2. Role of structural analysis in structural engineering projects

   3. Types of structures and structural elements

   4. Stability and determinacy of structures

   5. Approaches of structural analysis

   6. Linearity and non-linearity in structural analysis

   7. Degree of static and kinematic indeterminacy

   1. Strain energy and complementary strain energy; work and complementary work

   2. Strain energy due to gradually, suddenly applied direct load: dynamic multipliers

   3. Strain energy due to axial force, shear force, bending moment and torsion

   4. Displacement of beam, frame and truss by strain energy method

   5. Principle of virtual work

   Determine the slope and deflection of beams by various geometric methods.	Unit III: Slope and Deflections of Beams: Geometric Methods (6 hrs.)
   Understand the importance of influence line diagram for analysis of structure, determine reaction, shear force, bending moment at particular point and absolute maximum response of structure by influence line method	Unit IV: Influence Lines for Simple Structures (9 hrs.)
   Understand the uses of the statically determinate circular and parabolic arch. Solve problems related to electrostatics statically determinate arches by analytical and influence line diagram method.	Unit V: Statically Determinate Arches (6 hrs.)
   Understand the importance of cable structures, analysis of parabolic cable structures and three-hinged stiffening girder Determine shear force and bending moment of three-hinged stiffening girder by influence line diagram	Unit VI: Cable Structures (6 hrs.)

   1. Deflection of beams, frames and trusses by virtual work method

   2. Betti's law and Maxwell's law of reciprocal deflections

   3. Castigliano's theorems and application for beams and plane frames

   1. Double integration method

   2. Macaulay's method

   3. Superposition method

   4. Conjugate beam method

   5. Moment area method

   6. Conjugate-beam method

   1. Influence lines for statically determinate beams

   2. Influence lines for statically determinate trusses

   3. Influence lines for girders with floor systems

   4. Response at a particular location due to a single moving concentrated load

   5. Response at a particular location due to a uniformly distributed live load

   6. Response at a particular location due to a series of moving concentrated loads

   7. Absolute maximum response

   1. Types of arches

   2. Three-hinged arches with support at same and different level

   3. Determination of support reactions, normal thrust, radial shear and bending moment of circular and parabolic arches

   4. Axial force, shear force and bending moment diagrams in three hinged parabolic arches

   5. Influence line diagrams for reactions, bending moments, radial shear, normal thrust

   6. Maximum internal forces (axial force, shear force and bending moment) in three hinged parabolic arches

   1. Introduction to cable structures

   2. Elements of a simple suspension bridges

   3. Analysis of parabolic cables

   4. Analysis of three-hinged stiffening girder

   5. Influence line diagrams and determination of shear forces and bending moments for three-hinged

   approach.	stiffening girder
   Know the practical application of statically determinate space truss Determine the member force of statically determinate space truss	Unit VII: Statically Determinate Space Trusses (3 hrs.)

   1. Introduction to simple space trusses

   2. Types of supports

   3. Determinacy and stability

   4. Analysis of space truss by tension coefficient method

   Note: The figures in the parentheses indicate the approximate periods for the respective units.

   
   

5. List of Tutorials

   The following tutorial activities of 2 hours/ week per group of maximum 24 students should be conducted to cover all the required contents of this course.

   
   

   S.N.	Tutorials
   1	Determination of static and kinematic indeterminacy of various structures.
   2	Solving and analyzing the problems related to work-energy method.
   3	Determination of slope and deflection of different types of beam by various geometric methods.
   4	Determination of angle of acceptance for working of optical fiber and finding population of atoms in different energy states. Solving the problems of beam and truss structures by influence line diagram method.
   5	Solving the problems of three hinged parabolic and circular arch both analytical and influence line diagram method
   6	Solving the problems related to suspension cable bridge
   7	Determination of support reactions and member forces of space truss.

   
   

6. Practical Works (Any Eight)

   
   

   S.N.	Practical works
   1	To determine the deflection of beam experimentally and verify the result by computer simulation.
   2	To determine the displacement of frame experimentally and verify the result by computer simulation.
   3	To determine the displacement of truss experimentally and verify the result by computer simulation.
   4	To measure the effect of Influence lines for beam experimentally and verify the result by computer simulation.
   5	To determine the horizontal thrust of three-hinged arch experimentally and verify the result by computer simulation.
   6	To determine the tension in cable of suspension bridge by experimentally and verify the result by computer simulation.
   7	To determine the support reactions and member forces of space truss by computer simulation.

7. Evaluation system and Students’ Responsibilities

   
   

   Evaluation System

   In addition to the formal exam(s), the internal evaluation of a student may consist of quizzes, assignments, lab reports, projects, class participation, etc. The tabular presentation of the internal evaluation is as follows.

   
   

   Internal Evaluation	Weight	Marks	External Evaluation	Marks
   Theory		30	Semester-End examination	50
   Attendance & Class Participation	10%
   Assignments	20%
   Presentations/Quizzes	10%
   Internal Assessment	60%
   Practical		20
   Attendance & Class Participation	10%
   Lab Report/Project Report	20%
   Practical Exam/Project Work	40%
   Viva	30%
   Total Internal		50
   Full Marks: 50 + 50 = 100

   
   

   Student’s Responsibilities

   Each student must secure at least 45% marks separately in internal assessment and practical evaluation with 80% attendance in the class in order to appear in the Semester End Examination. Failing to get such score will be given NOT QUALIFIED (NQ) to appear the Semester-End Examinations. Students are advised to attend all the classes, formal exam, test, etc. and complete all the assignments within the specified time period. Students are required to complete all the requirements defined for the completion of the course.

8. Prescribed Books and References Text Books

1. Kassimali, A. (2009). Structural Analysis. Cengage Learning.

2. Norris, C. H., & Wilbur, J. B. (1960). Elementary Structural Analysis. McGraw-Hill.

References

1. Bhavikatti, S. S. (2011). Structural Analysis I. New Delhi: Vikas Publishing House Pvt. Ltd.

2. Darkov, A. & Kuznetsov, V. (2011). Structural Mechanics, Moscow: Mir Publishers.

3. Hibbeler, R.C. (2009). Structural Analysis. Pearson.

4. Jain, A.K. (2012). Strength of Materials and Structural Analysis (2012). Roorkee: Nem Chand & Bros.

5. Reddy, C.S. (1999). Basic Structural Analysis. Tata McGraw-Hill Education.