JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD B.Tech II STRUCTURAL ANALYSIS Previous Question Paper (April/May - 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 and may have a, b as sub questions.
PART - A
What do you understand by ‘Equilibrium’ and ‘compatibility’ condition?
Answer
Equilibrium conditions ensure that the sum of all forces and moments acting on a structure is zero, maintaining static stability. Compatibility conditions ensure that the deformed shape of the structure remains continuous and consistent with the support constraints, meaning no gaps or overlaps occur at joints.
Mention the merits of indeterminate structures over determinate structure.
Answer
Indeterminate structures offer several advantages: 1) They are generally more stable and have higher redundancy, meaning if one member fails, the structure can often redistribute loads. 2) They typically result in smaller member sizes and reduced deflections compared to determinate structures. 3) They provide better economy in material usage due to the redistribution of internal forces.
What is the difference between method of joints and method of sections for the truss analysis?
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Distinguish between pin jointed and rigidly jointed structures
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What are the assumptions made in the unit load method?
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Define: i) Three-hinged arch, ii) Two-hinged arch iii) Linear arch
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Give the relative stiffness when the far end of beam AB is i) Simply supported and ii) Fixed (Take l = length, EI = flexural rigidity).
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Mention the reasons due to which sway may occur in portal frames with sketches.
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Draw the ILD for cantilever beam carrying point load ‘P’ at the free end.
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When a series of wheel loads move along a girder, what is the condition for getting maximum bending moment under any one-point load?
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PART - B
Determine the Prop reaction and draw the BMD for the beam shown below figure 1.
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Determine the end moments and draw the BMD for the fixed beam shown below Figure 2.
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Find the forces in all members of the truss shown below by method of joints figure 3.
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Find the forces in the members of DE, DH, IH and EF and EG the truss shown below by method of sections figure 4.
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A three-hinged semicircular arch of uniform cross section is loaded as shown in figure 5 Calculate the location and magnitude of maximum bending moment in the arch.
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Determine horizontal and vertical components of deflection of joint ‘C’ of the truss shown in Figure 6. E = 2 × 105 N/mm2 and area of each bar A=150mm2.
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A continuous beam ABC consist of span AB=3m and BC=4m, the ends A and C being fixed. AB and BC carry uniformly distributed loads of intensity 4kN/m and 5kN/m respectively. The beam is of uniform section throughout. What are its support moments? Draw the bending moment diagram for the beam. Also draw elastic curve.
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A continuous beam ABCD is loaded as shown in Figure 7. During loading the support ‘B’ sinks by 1cm. Determine the support moments. Draw BMD. Take I = 1600cm4, E = 2.0 × 105 N/mm2. Use Moment Distribution Method.
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Draw the influence line diagram for the members 1, 2, 3 and 4 of the truss shown in Figure 8.
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Two wheel loads 200 kN and 80 kN spaced at 3 m apart move on the girder of span 16 m. Find the maximum positive shear force and bending moment that can occur at a section 6 m from the left end. Any wheel load can lead the other using Influence line diagrams.
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