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International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 12 Issue: 10 | Oct 2025

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p-ISSN: 2395-0072

EFFECT OF BRACINGS ON SEISMIC BEHAVIOR OF MULTI-STORIED RC FRAMED STRUCTURE RESTING ON SLOPED GROUND USING ETABS Manjunatha K S 1, Chetan Gonni S 2 1M. Tech Student, Department of Civil Engineering, Bapuji Institute of Engineering and Technology, Davanagere,

Karnataka, India

2Assistant Professor, Department of Civil Engineering, Bapuji Institute of Engineering and Technology,

Davanagere, Karnataka, India ---------------------------------------------------------------------***---------------------------------------------------------------------

Abstract - At present, India is the country with the largest

using both combinations depended on to resist loads. These systems are classified as rigid frames, braced frames or moment resisting frames. Today, framed structures are widely provision in multi-storey buildings, industrial facilities and bridges.

population in the world. It is increasingly becoming difficult to locate areas to live as there is congestion of space in big cities. This study investigates the G+12 storied structure resting on 10-degree sloped ground surface. The analysis is performed for seismic zone V as per Indian Standards codes by using Response Spectrum Method of Analysis. We have used steel bracings like X, K, V and diagonal for the study. The comparison is made between response parameters like Base Shear, Storey Displacement, Storey Drift and Storey Shear for sloped buildings to conclude about the considered structures in ETABS software through Response Spectrum Method of Analysis. This study helps to understand the performance and behavior of structures on sloped ground using different types of bracings.

1.2 Bracing Systems Bracing system are structural arrangements to provided in framed buildings are resist lateral loads induced by wind and earthquakes. They consist of inclined members placed between axial load member and flexure member to form a triangulated frame work, which effectively transfers lateral forces to the foundation. In high-rise buildings, bracing systems are essential for increasing structural stiffness and stability. They also help to reduce storey drift during earthquakes, to enhancing overall safety.

Key Words: RCC Structure, Bracing Systems, Response Spectrum Analysis, ETABS Software.

1.3 Earthquake Resistant Structures

1. INTRODUCTION

A Seismic resistant structure is created to seismic forces by assure safety and strength, for minimum damage during a seismic excitation. These structures are completely not in earthquake-proof, they are designed to absorb & it dissipates seismic energy effectively.

Earthquakes are historically and extensively caused due to structural damage in seismic behavior of structure. Bracing systems are provide essential support in earthquake-prone areas and helping to multi-storied buildings remain strong on both level and sloped ground. The various types of bracings such as X, K, V, Inverted chevron and diagonal. To enhance the durability and strength of structure with their effectiveness depends on placement and arrangement. They are mostly used in buildings to improve resistance against horizontal loads. In recent times, fast growth in large cities are caused lack of level land. Due to this it creates a major challenge to engineers for construction of buildings on sloped ground surface. This shows the preparation of complex geometric design and structural irregularities.

1.4 Response Spectrum Analysis A Response spectrum analysis the method useful for evaluate how the structures respond to earthquakes. To examine structural outcome. It assesses the buildings response to earthquakes and varying seismic intensities. Graphical presentation to of buildings to maximum response and its occurrence helps to design and assessment. It is generally used for dynamic analysis technique in seismic engineering to assess the tremor response of buildings. Each building responds specify to seismic activity based on its natural frequency, damping ratio and mode shapes, which should be considered in design and analysis.

1.1 Framed Structures Structures are most widely adopted frame systems in modern construction. Allowed loads can be efficiently transferred to the foundation to ensure the safety and stability. Such structures are highly effective in resisting vertical loads like, dead & live loads and lateral forces causes by wind or earthquakes. The structures are built to using reinforced concrete and structural steel components for

Impact Factor value: 8.315

2. OBJECTIVES The aim of the study is to investigate the seismic behavior of multi-storied RC building on flat ground and sloped ground at an inclination of 10 degrees, its interactive behaviors when added with different types of bracings at different locations.

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