*JE680*

JE – 680

V Semester B.E. (Civil) Degree Examination, June/July 2013 (2K6 Scheme) CE – 501 : THEORY OF STRUCTURES – II Time : 3 Hours

Max. Marks : 100

Instructions : 1) Answer any five full questions. 2) Assume suitably any missing data. 1. a) Distinguish between determinate and indeterminate structures with examples.

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b) Derive Clapyron’s theorem of three moments.

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c) What are continuous beams ? Explain their advantages over simply supported beams.

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2. Analyse the continuous beam shown in fig 1 and draw SFD and BMD. Use Clapyron’s theorem of three moments.

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3. a) State the advantages and disadvantages of fixed beams.

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b) A fixed beam of span 6 m carries point loads of 200 kN and 150 kN at distances 2 m and 4 m from the left end. Find the fixed end moments and draw the SFD and BMD.

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P.T.O.

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4. a) Determine the moments at A and B for the fixed beam carrying a triangular load whose intensity varies from zero at one end (at B) to w per unit run at the other end (at A). Span of the beam is l. 10 b) A beam AB of span 5 m fixed at both ends carries an UDL of 12 kN/m over the entire span. If the right end settles down by 12 mm, determine the end moments for the beam and also the vertical reaction at the ends. 10 Given EI = 15000 kN-m2. 5. Analyse the continuous beam shown in fig 2 by strain energy method and determine the reactions. 20

6. Analyse the portal frame shown in fig 3 by slope deflection method. Sketch the BMD.

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JE – 680

7. Analyse the continuous beam shown in fig 4 by slope deflection method. Also draw SFD and BMD.

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8. A beam AB of span 4 m is fixed at A and B and carries a point load of 5 kN at a distance of 1 m from end A. Calculate the support moments using consistent deformation method. 20 ———————