JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD B.Tech II STRUCTURAL ANALYSIS Previous Question Paper (September/October - 2023 - 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.
Part A
What is a moment hinge?
Answer
A moment hinge is a structural connection point where the bending moment is zero. It allows for free rotation between connected members, meaning it cannot transfer any bending moment, though it can transmit axial and shear forces.
Distinguish between static and kinematic indeterminacies of frames.
Answer
Static indeterminacy refers to the number of unknown forces (reactions or internal forces) that cannot be determined using the equations of static equilibrium alone. Kinematic indeterminacy (or degrees of freedom) refers to the number of independent joint displacements (translations and rotations) required to define the deformed shape of the structure.
What is the difference pin jointed and rigid jointed frames?
Answer
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What are the assumptions made for the analysis of pin jointed frames?
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State the Eddy’s theorem.
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Obtain an expression for strain energy due to bending moment?
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What are the various parameters used to obtain slope-deflection equations?
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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 bending moment.
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Explain the significance of Equivalent Uniformly Distributed Load.
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Part B
Draw the shear force and bending moment diagrams of the beam supported and loaded as shown in Fig.1.
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Find the deflection under the point of action of the concentrated load and the slope at the prop of a beam supported and loaded as shown in Fig.2. Adopt E = 200 GPa and I = 75 × 106 mm4.
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Analyse the plane truss supported and loaded as shown in Fig.3. Use 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 Fig. 4.
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Determine the mid-span deflection of a beam supported and loaded as shown in Fig.5. Use Castigliano’s first theorem.
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A plane truss made-up of equilateral triangles of side 2 m is supported and loaded as shown in Fig.6. Find the vertical deflection of the node ‘3’. 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 shown in Fig.7, by slope-deflection method.
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Analyse the continuous beam supported and loaded as shown in Fig.8, if the support D sinks by 20 mm. Use Moment Distribution Method. Adopt E = 200 GPa and I = 60 × 106 mm4.
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Two point loads 60 kN and 90 kN spaced at 3 m apart crosses a girder of span 15 m from left to right with the 60 kN load leading. Find the magnitude and location of absolute maximum positive shear force, absolute maximum negative shear force and absolute maximum bending moment.
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Draw the influence line diagram for shear force and bending moment at a section 9 m from the left support of a simply supported girder of span 24 m. Also determine the maximum shear force and the bending moment at the same section, if two point loads 90 kN and 150 kN, 3 m apart crosses the girder from left to right with 90 kN load leading.
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