JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD B.Tech II STRUCTURAL ANALYSIS Previous Question Paper (February - 2024 - R16)
Note: i) Question paper consists of Part A, Part B. ii) Part A is compulsory, which carries 25 marks. In Part A, answer all questions. iii) In Part B, Answer any one question from each unit. Each question carries 10 marks and may have a, b as sub questions.
Part A
What are the merits of indeterminate structures over determinate structures?
Answer
Indeterminate structures are generally more economical as they allow for a redistribution of internal forces, leading to smaller member sizes. Additionally, they offer greater structural redundancy, providing increased safety and stability in the event of local member failure.
Distinguish between static and kinematic indeterminacies of beams.
Answer
Static indeterminacy refers to the number of unknown reactions or internal forces that cannot be determined using only the equations of static equilibrium. Kinematic indeterminacy refers to the number of independent displacement components (degrees of freedom) required to define the deformed shape of the structure.
What is the significance of method of sections for the analysis of pin jointed Trusses?
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What are the different types of frames?
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What is a Linear Arch?
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Obtain an expression for strain energy due to axial load?
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Define the distribution factor and carryover factor.
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Explain the effect of settlement of support on shear force at any section of a continuous beam?
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Define an influence line for Shear force.
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State and explain Muller Breslau’s Principle.
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Part B
Draw the shear force and bending moment diagrams of the beam supported and loaded as shown in Figure.1
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Find the deflection under the point of action of the concentrated load and maximum deflection of a beam of span 6 m supported and loaded as shown in Figure.2. Adopt E = 200 GPa and I = 90 × 106 mm4.
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A plane truss made-up of equilateral triangles of side 3 m is supported and loaded as shown in Figure.3. Analyse the truss using the method of joints.
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Using the method of sections, determine the forces in the members 1,2,3 and 4 of a plane truss supported and loaded as shown in Figure. 4.
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Using Castigliano’s theorem, find the mid-span deflection of a beam supported and loaded as shown in Figure. 5.
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Find the vertical deflection at the node ‘3’ of a plane truss supported and loaded as shown in Figure.6. Assume the axial rigidity is the same for all the members of the truss. Use Unit Load Method.
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Analyse the continuous beam supported and loaded as shown in Figure.7, if the support B sinks by 10 mm. Use slope-deflection method. Adopt E = 200 GPa and I = 90 × 106 mm4.
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Analyse the continuous beam shown in Figure.8, by Moment Distribution Method.
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An uniformly distributed load of intensity 30 kN/m, 6 m long crosses a simply supported girder of span 24 m from left to right. Calculate the maximum positive and negative shear forces at a section 9 m from the right support. Also find the absolute maximum bending moment and its location.
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Draw the influence line diagrams for shear force and bending moment at a section 8 m from the left support of a simply supported girder of span 15 m. Also, determine the maximum bending moment and shear force at the same section due to moving uniformly distributed load of intensity 45 kN/m of length 6 m.
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