International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 11 Issue: 03 | Mar 2024
p-ISSN: 2395-0072
www.irjet.net
REVIEW PAPER ON SEISMIC ANALYSIS OF MULTISTORY BUILDING FRAME ON SLOPING GROUND Nandini Naresh Raut1 Nimish Patankar2 Prof. Pallavi Deotale3 *1M.Tech Computer Aided Structural Engineering Student WCEM, Nagpur *2 Structural Engineer, RCC and steel structural Consultant, Nagpur *3Head of Dept. of civil Engineering WCEM, Nagpur
---------------------------------------------------------------------***---------------------------------------------------------------------
Abstract – Due to the current situation's increasing
population, city expansion, and lack of level ground, the majority of buildings are frequently built on sloping terrain. When a building is located on a sloping site, the distribution of mass and stiffness in both the horizontal and vertical planes changes. These structures, which are often torsional coupled and positioned on steep hillsides in seismically active regions, are vulnerable to significant damage from ground motion during an earthquake. ETABS 16 software is utilized for model analysis. Models are analyzed on both level and sloping surfaces. The model is first put through a seismic analysis process that involves assigning different load scenarios and combinations. Storey drift, storey shear, overturning moment, and maximum storey displacement are among the study's conclusions that need to be in contrast. A graph was made based on the results of the data analysis. According to Part 1 of IS code 1893:2002, all loads are applied. Fig.1. Building Frame with short Column
Key Words: Seismic Analysis, ETABS 16, Sloping ground, Response spectrum method, step back frames, step back and set back frames, step back with bracings
2. OBJECTIVE OF STUDY
1. INTRODUCTION The structural irregularity in steep areas, seismic forces operate more severely there. Additionally, research has shown that hilly regions are more vulnerable to seismic activity. For instance, the north-eastern states of India. The way that mass and stiffness are distributed throughout the building's horizontal and vertical planes affects how the structure behaves during an earthquake. Both of these characteristics vary irregularly and asymmetrically in hilly regions. Such structures are more vulnerable to shear and torsion in seismically active areas. Plains buildings are not the same as hill buildings. In both the horizontal and vertical axes, they are incredibly asymmetrical and uneven. As a result, they are vulnerable to serious harm from ground motion caused by earthquakes. The idealization of the structure's shape and the loading on it determine the methodology and precision of the analytical results. With a multi-story building resting on a sloping ground, the current work seeks to provide an analytical method for determining the displacements, storey drifts, natural frequency, time period, and foundation shear.
© 2024, IRJET
|
Impact Factor value: 8.226
|
I.
To research how variously configured sloping ground buildings behave seismically.
II.
To investigate the relationship between changes in the angle of the hillside and variations in the number of storeys for various building frame layouts.
III.
To compare the results of story Drift, shear force bending moment, and building torsion of regular and irregular with 10-degree and 20-degree slope ground structure with flat ground models developed with ETABS software.
IV.
To examine a multistory RC building's seismic performance with various bracing configurations like X, inverted V, V, diagonals, and Using Nonlinear Static Pushover analysis, K bracings technique and time history, a non-linear dynamic Analytical process.
V.
To study the variation of top storey displacement with respect to variation in number of bays, hill slope angle, storey height for different configurations of building frames.
ISO 9001:2008 Certified Journal
|
Page 655