International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 11 Issue: 06 | Jun 2024
www.irjet.net
p-ISSN: 2395-0072
Advanced Structural Analysis of Multistoried Building Resting on Sloping Ground Using Time History Method Prof. V.V Shelar1 Ms. Unnati Kasar2 Prof. V.S Shingade3 Assistant Professor1 Department of Civil Engineering, TCOER- Pune, P.G Student2 Department of Civil Engineering, TCOER- Pune, Assistant Professor3 Department of Civil Engineering, TCOER- Pune. ---------------------------------------------------------------------***--------------------------------------------------------------------I. OBJECTIVE OF THE STUDY* Abstract - Framed structures built on slopes exhibit distinct behaviors compared to those on flat terrain. These structures are often asymmetrical, leading to uneven load distribution due to varying column heights and lengths. This study examines a multistoried building's seismic performance with different structural configurations, specifically step back set back structures and H-shaped structures. Utilizing time history analysis, seismic responses were assessed using advanced software tools. The analysis revealed that step back set back structures without shear walls perform better than H-shaped structures. However, H-shaped structures with both internal and external shear walls demonstrated superior performance compared to step back set back structures.
1. To analyze the seismic performance of different structural configurations, including step back set back and H-shaped structures, on sloping ground. 2. To investigate structural parameters such as storey shear, base shear, and story stiffness in response to seismic forces on slopes. 3. To identify the most suitable structural configuration for multistoried buildings on sloping ground by evaluating various design options and considering seismic performance, stability, and structural integrity.
II. DESCRIPTION OF BUILDINGS*
Keywords: Multistorey building, Hill Slope angle, Step back set back structure (SBSB), H shape structure, Shear wall, Time history analysis(THA).
A study was conducted to analyze the seismic behavior of buildings situated on hill slopes, incorporating various configurations as illustrated in Figures 1 to 4. The slope angle was fixed at 28.07 degrees, while the plan dimension of the building was 6.0 meters by 5.0 meters, with each story having a height of 3.2 meters. This investigation aimed to understand how different structural arrangements and slope conditions affect the response of buildings to seismic forces, providing valuable insights into the design and construction of structures in hilly terrain.
1. INTRODUCTION Reinforced concrete (RC) framed structures face significant challenges when situated on hill slopes, particularly in seismic-prone regions. Historical seismic events like the Bhuj earthquake (2001), Chamoli earthquake (1999), and Uttarkashi earthquake (1991) have underscored the vulnerability of buildings in hilly terrain. For instance, the Bhuj earthquake resulted in a staggering loss of over 35,000 lives and extensive structural damage, while the Chamoli earthquake caused 103 fatalities and the Uttarkashi earthquake claimed over a thousand lives, causing widespread devastation in the Garhwal Himalayas. To address seismic risks, various bracing techniques such as moment frames, shear walls, and braced frames are utilized. Step-back and setback configurations have demonstrated superior performance on sloping terrains compared to conventional designs. However, despite their potential advantages, there remains a dearth of comprehensive studies on multistoried buildings on slopes, especially those incorporating shear walls in diverse locations. Further research is imperative to deepen our understanding of the behavior of these structures and to formulate effective design strategies.
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Impact Factor value: 8.226
Building Height
Column Size mm x mm
Beam Size mm x mm
27.2 m
600 X 600
300 X 600
Table 1 presents the sizes of RCC beams and columns used.
Figure 1 illustrates the plan of two types of structures: SBSB (Step-Back Setback) Structure and H-Shape Structure, both without shear walls.
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