Download GTU BE/B.Tech 2018 Winter 5th Sem New 2150610 Advance Structural Analysis Question Paper

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GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER- V (NEW) - EXAMINATION- WINTER 2018

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Subject Code: 2150610 Date: 27/11/2018
Subject Name: Advance Structural Analysis
Time:10:30 AM to 01:00 PM Total Marks: 70

Instructions:
1. Attempt all questions.

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2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.

MARKS

Q.1 (a) Explain any two types of skeleton structures with their internal forces and deformations. 03
(b) A conical dome of 20m diameter at base and 4m rise subjected To udl of 4kN/m?. Determine maximum meridional thrust and hoop force in the dome. 04

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(c) Derive equations of shape factor of (i) circular section (ii) square section 07

Q.2 (a) Define: 03
1. Flexibility 2. Stiffness 3. Shape Factor
(b) Calculate the shape factor of section shown in Fig.01. 04
(c) Analyze the frame as shown in fig.02 by stiffness method. 07

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OR
(c) Analyze the beam as shown in fig.03 by flexibility method. 07

Q.3 (a) Enlist various types of domes. Show the nature of the stresses developed in conical dome with neat sketch. 03
(b) Determine the redundant Q1 and Q; for-the' beam shown in fig.04. 04
(c) Derive the formula for Mp required for the propped cantilever beam loaded by a collapse uniformly-distributed load of We kN/m. 07

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OR
Q.3 (a) Write different uses of domes. 03
(b) Find the collapse load for.afixed beam of span L and subjected to an UDL of w/unit length using static method and kinematics method. 04
(c) A fixed beam of ‘6m span carries a central point load of 100kN. Determine plastic moment and plastic section modulus required. Take fy = 250’ N/mm?. 07

Q.4 (a) Determine the shape factor for circular section of diameter D. 03

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(b) For the Fig.0S, determine final end moments by stiffness method of analysis. 04
(c) A spherical dome has base diameter of 12 m and rise of 2.75 m carries a live load of 3.0 kN/m?. Calculate the meridional and hoop stress at phi = 30° and at ring beam level. Assume thickness of dome is 14 cm and density of dome material is 25 kN/m?. 07
OR
Q.4 (a) Define: 03
1. Mechanical hinge. 2. Plastic hinge. 3. Plastic modulus of section.

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(b) Differentiate between Force Method and Displacement Method of Analysis. 04
(c) Give the characteristics of flexibility and stiffness matrix. 07

Q.5 (a) Write the steps of Flexibility method of analysis. 03
(b) State the assumptions in plastic analysis. 04

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OR

Q.5 (a) State: (1) Upper bound theorem and (2) Lower bound theorems for Collapse load in plastic analysis. 07
(b) Derive the equation of collapse load for the propped cantilever beam subjected to central point load. 03
(c) State and explain in brief various collapse mechanism of a frames in plastic theory with neat diagrams. 04

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Derive equation of collapse load for the propped cantilever beam subjected to uniformly distributed load. 07

Ke=EI/2 KN/m

Fig. 3
1Q KN/m
30 KN

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B c
2
Fig. 4 Fig. 5

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