Download AKTU (Dr. A.P.J. Abdul Kalam Technical University (AKTU), formerly Uttar Pradesh Technical University (UPTU) B-Tech 8th Semester (Eight Semester) 2018-19 ECE064 Earthquake Resistant Design Of Structures Question Paper
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B.TECH
(SEM VIII) THEORY EXAMINATION 2018-19
EARTHQUAKE RESISTANT DESIGN OF STRUCTURES
Time: 3 Hours T 0tal Marks: 100
Note: 1. Attempt all Sections. If require any missing data; then choose suitably.
SECTION A
Attempt all questions in brief. 2 x10=20
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Define earthquake resistant design philosophies.
What factors of earthquake forces in a structure ?
Define isoseismals of an earthquake.
What are the dynamic behavior of soil?
Define radiation damping.
List out methods of modeling soil.
Define spring models.
Write spring models limitation.
De?ne lap splices.
Define restrotation.
SECTION B
Attempt any three of the following: 10x3=30
Describe types and characteristics of typical dynamic loading with examples and
essential characteristics of dynamic problem.
What are the plate tectonics and how they are related to continental drift and sea ?oor
spreading.
Consider a two storied structure shown in figure . Let the system be given free Vibration
by giving an initial displacement of 10 cm to the top story. Find X1 and X2?
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What is response spectra and explain the importance of seismic design of a structure ?
Describe the development of mass spring dashpot model from elastic half space theory.
SECTION C
Attempt any one part of the following:
Describe effects of earthquake. and also define moment magnitude.
Distinguish between the following (a) Body ways and surface ways (b) lithosphere
and asthenosphere.
Attempt any one part of the following:
An SDOF system consist of a mass with weight of 175 kg and a spring costant k=530
kN/m . While testing the system a relative velocity of 30 cm/s was observed on
application of a force of 450 N. Determine the damping ratio, damped frequency of
Vibration, logarithmic decrement, and the ratio of two consecutive amplitudes.
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b. Derive a mathematical expression defining the dynamic displacements using
d?Alembert?s principle.
5. Attempt any one part of the following:
21. Describe the various earthquake ?resistant features that can be introduced in a masonry
building to make it earthquake resistant.
b. The plan and elevation of a three ? storied RCC building shown in figure . the building
is located in seismic zone V. The type of soil encountered is medium stiff and is
proposed to design the building with a special moment ?resisting frame. The intensity
of DL is 10 kN/m2 and the ?oors are to cater to an IL of 3kN/m2. Determine the design
seismic loads on the structure by static analysis.
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(a) Plan (D) Elevation
9?
Attempt any one part of the following:
a. Determine the frequency and design seismic coefficient for an ordinary masonry shear
wall in a school building at Allahabad. For the given following data . Roof load P=15
kN/m, Height of wall h=3.0 m , Width of wall b=0.2 m . Unit weight of wall w =19.2
kN/mz, soil is medium.
b. Define bands. At what levels in a masonry building would you provide them? Give
justifications for each of them
7. Attempt any one part of the following:
21. Starting from fundamentals derive the expression for natural frequencies and
amplitudes
for block foundation subjected to horizontal forces FxSinwt and a moment MySinwt at
the
combined center of gravity of machine and foundation.
b. Determine the lateral forces on a two-storey unreinforced brick masonry building as
shown in ?gure sustained near Zone 111 for following data . Plan size =18mx8m , total
height of building: 6.2 m , storey height =3.1 m , weight of roof = 2.5kN/m2, weight of
wall =5 kN/mz, live load on roof=0, live load at ?00r=1.0 kN/mz, Zone factor =1.0,
importance factor =1.0 , Response reduction factor =1.5, soil (Type 111) medium soil.
1 8 m
Roof '
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573.74 kN
3.1 m Second
floor
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206.26 kN
3" m First?oor
780 kN
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This post was last modified on 30 January 2020