Taller Structures, Greater Challenges: RCC Behavior Under Dynamic Forces

Title, Authors, and Publication

The paper, titled "Wind and Seismic Analysis of RCC Building Using ETABS", was authored by Manoj Chopdey and Dr. Rajeev Chandak and published in the International Journal of Scientific Research & Engineering Trends (IJSRET), Volume 9, Issue 6, November-December 2023.

Objective and Background

This study aims to evaluate the impact of wind and seismic loads on the structural behavior of a 25-story reinforced concrete (RCC) building. With urbanization driving the construction of taller structures, assessing their performance under dynamic forces like wind and seismic activity becomes critical. RCC buildings, despite their robustness, face challenges when subjected to these forces due to lateral displacements and structural instability. This research uses ETABS software to model and analyze the building's response, focusing on parameters such as storey displacement, drift, and shear forces to ensure structural resilience.

Introduction

The study underscores the significance of analyzing wind and seismic loads to ensure the structural integrity of RCC buildings, especially in urban environments where tall buildings are common. Wind loads create lateral pressure on the building's surfaces, while seismic loads generate complex ground motions, leading to varying horizontal and vertical displacements. Both factors affect the stability, strength, and overall performance of the structure. The research aligns with Indian Standards (IS) codes to provide actionable insights into the dynamic behavior of RCC buildings, ensuring compliance and safety.

Methodology

The research adopts the following methodology:

1. Structural Modeling: A G+25 multi-story RCC framed building with a total height of 75 meters was modeled using ETABS. The building plan measures 11m by 8m with rigid floor diaphragms and fixed supports. Columns were designed with dimensions of 500x300mm, beams with 400x300mm, and slabs with a 150mm thickness. M30 concrete and Fe500 steel were used for structural elements.
2. Load Analysis: The study examined dead loads, live loads, wind loads, and seismic loads, as per IS codes 875 and 1893. Wind loads were calculated using parameters such as topography, building aspect ratio, and wind speed, while seismic forces were applied based on Zone 3 seismic parameters.
3. Critical Load Combinations: Various load combinations involving wind, seismic, dead, and live loads were analyzed to identify critical scenarios impacting the structure's behavior.

Key Findings

1. Seismic Analysis: The maximum storey displacement under seismic loads was 538.21 mm, increasing with building height. The critical load combination was observed for "1.5(DL + EQ-Y DIR.)", leading to a maximum displacement of 1182.36 mm. Maximum storey drift under seismic loads was 0.009417, while maximum shear forces ranged from 0 to -2878.62 kN.
2. Wind Analysis: Maximum storey displacement under wind loads was 241.05 mm, with the critical load combination "1.5(DL + W-Y DIR.)" producing 804.62 mm. Maximum storey drift was 0.00404, and shear forces ranged from 0 to -1163.01 kN.
3. Performance Trends: Displacements and drifts increased with height, emphasizing the need for design measures to reduce lateral instability. Wind loads in the Y-direction produced greater diaphragm displacement compared to the X-direction.

Conclusion

The study concludes that RCC buildings experience significant lateral displacements and drift under wind and seismic loads, with these effects increasing with building height. Proper load combinations, design optimization, and compliance with IS codes are critical to enhancing structural stability. The research highlights the importance of advanced analysis tools like ETABS to predict dynamic behavior accurately and ensure safer structural designs.

Thesis Proofreading, Thesis Proofreading Services, Proofreading PhD Thesis Price, Thesis Editing, Thesis Editing Services, Professional Thesis Editing, PhD Thesis Editing, Dissertation Proofreading, Dissertation Proofreading Services, Proofreading Dissertation, PhD Dissertation Proofreading, Corre??o Texto Ingles, Corre??o de Artigos Científicos, Corre??o de Trabalhos Academicos, Servi?os de Corre??o de Inglês, 論文編輯, 論文編修, 學術英文編修, Revision Ingles, Revision en Ingles, Revision de Textos en Ingles, Revision de Tesis, Revis?o Texto Ingles, Revis?o de Artigos Científicos, Revis?o de Trabalhos Academicos, Servi?os de Revis?o de Inglês, Corrección de Ingles, Corrección de Textos en Ingles, Corrección de Tesis, Corrección de Tesis Precio, ????, ???? ???, ????, 论文编辑, 论文编修, 学术英文编修, 英文編修, 論文編修, Proofreading UK, Proofreading Services UK, Proofreading Rates UK, Academic Proofreading Services UK, Akademisches Lektorat, Lektorat Englisch, Akademisches Lektorat, Wissenschaftliches Lektorat, Lektorat Doktorarbeit, Journal Citation Reports, Choosing the right Journal, Dealing with Rejection, What is a good h-index, dissertation korrekturlesen, doktorarbeit korrekturlesen, korrekturlesen dissertation, 論文校稿, 校稿 英文, manuscript editing services, manuscript editing, scientific manuscript editing services, master thesis editing, master thesis proofreading, medical editing services, phd thesis proofreading service, thesis editing services australia, thesis editing australia, proofreading services, proof reading, proofreading service, proofreading phd thesis, proofreading, proofreading services.com, proof reader

?