http://dspace.dtu.ac.in:8080/jspui/handle/123456789/45 2026-04-28T04:03:15Z http://dspace.dtu.ac.in:8080/jspui/handle/repository/22653 Title: UTILIZATION OF ARTIFICIAL INTELLIGENCE IN SEISMIC ANALYSIS OF REINFORCED CONCRETE FRAMED BUILDINGS Authors: RANA, SHUBHAM Abstract: Earthquakes are among the most catastrophic natural disasters, causing significant losses in life and property worldwide. The primary cause of structural damage during an earthquake is the unpredictable lateral loads imposed on buildings. To mitigate such damage, the structural framework must be robust enough to withstand these loads. Advances in software such as ETABS (Extended Three-dimensional Analysis of Building Systems) have enhanced the understanding of structural behavior under seismic loads. Recently, the integration of artificial intelligence (AI) techniques, particularly artificial neural networks (ANNs), has shown promise in improving the seismic analysis of reinforced concrete framed buildings. This paper focuses on the application of ANN in predicting the base shear and deflection of an eight-story reinforced concrete building modeled using ETABS. The research involves training an ANN model using data generated from ETABS simulations, followed by validation of the ANN predictions against ETABS results. Key metrics such as Scatter Index (SI), root-mean-squared error (RMSE), and correlation coefficient (R²) are utilized to evaluate the accuracy of the ANN model. The study highlights the challenges in AI model development, including data quality and generalization to different contexts. The findings demonstrate that the ANN model achieves high prediction accuracy, with a scatter index of less than 1% for both base shear and deflection, and v a correlation coefficient close to 1. These results underscore the potential of ANN as a reliable tool for early prediction of structural response during seismic events. The study concludes by suggesting that ANN-based approaches can significantly enhance seismic analysis, offering a more efficient and accurate alternative to traditional methods, with future potential for real-time structural health monitoring and assessment. 2024-05-01T00:00:00Z http://dspace.dtu.ac.in:8080/jspui/handle/repository/22552 Title: NON-LINEAR DYNAMIC ANALYSIS OF REINFORCED CONCRETE STRUCTURE Authors: TAWRA, DIVYANSH Abstract: This study focuses on understanding how a reinforced concrete (RC) building responds to strong earthquakes by using nonlinear dynamic analysis. A G+4 (ground plus four floors) building model is created and analysed under two different real earthquake records: the 1940 El Centro earthquake and the 2001 Bhuj earthquake. The goal is to observe how the building behaves when subjected to different types of seismic forces and to evaluate its performance during strong ground shaking. The building is modeled and analysed using ETABS v19, following relevant Indian standards, including IS 456:2000 for structural design and IS 1893:2016 for seismic loading. Nonlinear time history analysis is performed to simulate realistic behaviour by considering both material and geometric nonlinearity. Important response parameters such as base shear, lateral displacement, story drift, and time history plots are studied for each earthquake case. These results highlight the importance of using nonlinear dynamic analysis and considering multiple seismic inputs when assessing the safety and performance of RC buildings in earthquake-prone areas. 2025-12-01T00:00:00Z http://dspace.dtu.ac.in:8080/jspui/handle/repository/22551 Title: WIND EFFECTS ON TALL BUILDINGS: A CAMPARISON OF MAJOR INTERNATIONAL CODES Authors: SINGH, ASHISH Abstract: This M.Tech thesis gives a rigorous and systematic comparative examination of worldwide and national wind loading standards, with a special emphasis on the Indian Standard IS 875 (Part 3) 2015 and American Society of Civil Engineers standard ASCE 7-22. This study's primary objective is to investigate and compare the wind-induced responses of high-rise buildings predicted by both codes, highlighting important discrepancies and their practical consequences for structural design. The study uses dynamic analysis method to evaluate the wind load effects on a number of tall buildings with different geometrical shapes. Buildings of 130 meters in height with various cross- sectional shapes (such as rectangular, octagonal) were studied In order to gain a clearer understanding of effect of geometry on Wind response. In addition, an 65-meter-tall building was included in the research to extend the scope and assess the impact of height variation on wind behaviour. For consistency, the comparison analysis was carried out using terrain category 3 as described by both standards. Key aspects investigated include design wind pressure distribution in relation to height, base shear, storey drift and storey displacement. These metrics were chosen to provide a full understanding of structural performance and safety consequences. The findings of this study reveal considerable discrepancies in wind pressure calculations and structural responses resulting from the two standards. These variations are examined critically in terms of their impact on structural design practices, cost consequences, and safety margins. The analysis not only discloses each code's underlying conservatism or leniency, but it also emphasizes the need of adopting a design standard that is suited for the specific regional and structural context. Finally, the findings of this thesis contribute to a more comprehensive understanding of wind load behavior in high-rise structures, providing significant insights for structural engineers, code developers, and academics. This study intends to improve the resilience, the structural integrity and performance of high-rise buildings in regions prone to strong winds by closing the design gap between international and Indian requirements. 2025-05-01T00:00:00Z http://dspace.dtu.ac.in:8080/jspui/handle/repository/22550 Title: INFLUENCE OF SOIL-STRUCTURE INTERACTION ON SEISMIC PERFORMANCE OF TALL BUILDINGS Authors: YADAV, ASHISH Abstract: The interaction between a building and the supporting soil plays a critical role in determining structural behavior, especially during seismic events. This project focuses on evaluating the Soil-Structure Interaction (SSI) effects for a G+14 reinforced concrete building with a basement, situated in Delhi — a region classified under Seismic Zone IV according to IS 1893 (Part 1): 2016. While conventional analysis often assumes a fixed support at the foundation level, such assumptions can overlook the influence of soil flexibility on a building’s dynamic response. Using ETABS 20, the structure is modeled to include both the superstructure and basement levels. Soil flexibility is accounted for by introducing equivalent spring constants that simulate the supporting ground’s response under load. These constants are based on assumed geotechnical conditions typical of Delhi’s subsoil. The study examines how variations in soil stiffness affect key structural parameters such as lateral displacement, base shear, time period, and inter-story drift. Response spectrum analysis is used to compare the seismic behavior of the fixed- base model with that of models incorporating SSI. It is observed that neglecting soil compliance may result in either underestimating or overdesigning structural components. The study also provides insight into how SSI affects basement wall behavior due to lateral earth pressures. In conclusion, this research demonstrates the significance of including soil- structure interaction in high-rise structural models, especially for earthquake-prone zones. It also recommends the integration of structural software like ETABS with geotechnical tools such as PLAXIS for more refined SSI studies in future research. 2025-05-01T00:00:00Z