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
Survey-Based Investigation of P-Delta Influence on RCC Building Design 1Mr.Saurabh Vinayak Kamble, 2Prof. V. P. Bhusare, 3Prof. Y. R. Suryawanshi
Jspm’s Imperial College Of Engineering & Research Wagholi, Pune- 412207,Maharashtra, India. ---------------------------------------------------------------------------***--------------------------------------------------------------------------improves concrete analysis by expediting the design process Abstract - The P-delta effect, which is important
in structural analysis for tall structures, is investigated in this work utilizing linear static analysis in STAAD.Pro software. RCC-framed structures of varying heights are modeled using seismic loads from IS-1893(2016) for Zone III and load combinations from IS456(2000).Bending moments and narrative displacements are calculated using and without the Pdelta effect for various models. An iterative approach increases the rigidity of dangerous buildings to meet acceptable standards. The findings stress the importance of considering the Pdelta impact in 5-story structures and encourage adequate planning for buildings taller than 20 meters. Furthermore, up to 25 storeys, primary analysis is sufficient, with measures such as cross-section adjustment efficiently bringing dangerous structures inside permissible limits.
Index Terms – P-delta effect, RCC building design, Structural analysis, STAAD.Pro software, Earthquake loads
I. INTRODUCTION The P-delta analysis approach is an important feature of structural engineering, especially for geometric nonlinearity in buildings subjected to lateral stresses such as wind or seismic forces. In contrast to linear analysis, real-world scenarios contain considerable lateral displacements that can change a structure's shape and the distribution of internal forces. P-delta analysis takes into consideration both axial loads (P) and lateral deformations (delta), which are especially significant in tall or flexible constructions. This cyclical procedure is frequently mechanized with powerful technologies, assuring compliance with building rules and accurate structural response assessments. Lateral loads, which include wind, seismic, and temperature-induced forces, are crucial in determining structure stability and design.Structural components such as shear walls, bracing systems, and damping systems help to withstand lateral loads, with different bracing types designed for specific structural requirements. STAAD.Pro software offers scalable structural analysis and design solutions, whereas RCDC
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for elements such as beams, columns, and walls. The purpose of this study is to evaluate the P-delta effect on RCC columns using STAAD.Pro software, with objectives including stability analysis, comparing steel percentages for unsafe columns, and analyzing RCC structures with and without X-bracing to maximize performance.
II. RELATED WORK Structural planning and design combine art and science, necessitating creativity, conceptual thinking, and a thorough understanding of structural engineering concepts. Akash Deep et al. (2016) stressed the need of following applicable design norms and standards to ensure structural safety while balancing cost and safety. Their research focused on constructing a G+5 building in Badarpur, New Delhi, with STAAD.PRO software, emphasizing the importance of rigorous planning and the use of powerful software tools for structural design. In earthquake-prone areas such as India, understanding earthquake behavior and building earthquake-resistant structures is critical. Bhavesh Kumar Daharwal et al. (2018) emphasized the importance of designing structures that can withstand seismic forces in order to avoid potential hazards. Their research underscored the importance of shear walls in resisting lateral stresses during earthquakes, which contributes to greater structural stability. Concrete cracking and the second-order geometric effect of P-Delta are important factors in the seismic response of high-rise reinforced concrete buildings, as established by Ruaa A. Abdulhameed et al. (2022). Their research, which used finite element analysis with ETABS software, shed light on the impact of concrete cracking and P-Delta effects on modal analysis, revealing the elongation of vibration time periods and other crucial parameters. Prashant Dhadve et al. (2019) explored the P-delta impact in high-rise buildings, highlighting its importance as the number of storeys increased. Their study, which used ETAB software, emphasized the need of taking P-delta effects into account in structural design, especially for tall buildings that experience significant deformation.
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