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26 results on '"Anitha Kumari, S."'

1. Recycled Construction and Demolition Waste as Aggregates: A Study

Author

Chitra, V., Kavyashree, Kumar, Suraj, Rathod, Rahul. B., Anitha Kumari, S. D., di Prisco, Marco, Series Editor, Chen, Sheng-Hong, Series Editor, Vayas, Ioannis, Series Editor, Kumar Shukla, Sanjay, Series Editor, Sharma, Anuj, Series Editor, Kumar, Nagesh, Series Editor, Wang, Chien Ming, Series Editor, Cui, Zhen-Dong, Series Editor, Ghai, Rajinder, editor, Chang, Luh-Maan, editor, Sharma, Raju, editor, and Chandrappa, Anush K., editor

Published
2024
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2. Physical and Mechanical Characterization of Recycled Concrete Aggregates (RCA) as Compacted Fill in Road Pavement

Author

Chandanshree, N. S., Anitha Kumari, S. D., Nimbalkar, Sanjay, di Prisco, Marco, Series Editor, Chen, Sheng-Hong, Series Editor, Vayas, Ioannis, Series Editor, Kumar Shukla, Sanjay, Series Editor, Sharma, Anuj, Series Editor, Kumar, Nagesh, Series Editor, Wang, Chien Ming, Series Editor, Cui, Zhen-Dong, Series Editor, Hazarika, Hemanta, editor, Haigh, Stuart Kenneth, editor, Chaudhary, Babloo, editor, Murai, Masanori, editor, and Manandhar, Suman, editor

Published
2024
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3. Effect of Composite Pile Foundation System on the Behavior of Soft Ground

Author

Kalita, Dimpa Moni, Anitha Kumari, S. D., di Prisco, Marco, Series Editor, Chen, Sheng-Hong, Series Editor, Vayas, Ioannis, Series Editor, Kumar Shukla, Sanjay, Series Editor, Sharma, Anuj, Series Editor, Kumar, Nagesh, Series Editor, Wang, Chien Ming, Series Editor, Sitharam, T.G., editor, Pallepati, Raghuveer Rao, editor, and Kolathayar, Sreevalsa, editor

Published
2021
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19. Analysis of structures subjected to crowd loads

Author

Anitha Kumari S D, Nimmy Mariam Abraham, and Angitha Vijayan

Subjects
Forcing (recursion theory), business.industry, Computer science, Natural frequency, 02 engineering and technology, Structural engineering, 021001 nanoscience & nanotechnology, Vibration, Synchronization (alternating current), 020303 mechanical engineering & transports, Modal, 0203 mechanical engineering, Limit (music), 0210 nano-technology, business, Earth-Surface Processes
Abstract

The movement of people on any structure induces dynamic crowd load. The enthusiastic potential behavior of people from overwhelming happiness in concert, shows etc. on structures such as stadiums, auditorium, grandstands, bridges, malls and convention centers causes synchronized rhythmic movements. Resonance between forcing frequency and one or more natural frequencies of the structure resulting from human-structure synchronization leads to strong vibrations. Such vibrations not only affect structural stability, but also create discomfort among people. Pedestrian induced lateral vibration of Millennium Bridge, London is a classic example for the same. Crowd loads impose vertical as well as horizontal loads on the structure. Both these loads induce vibrations in corresponding directions. Beyond an acceptable limit of vibration level, people may feel uncomfortable. If there is a mode of low natural frequency, even a significantly low forcing frequency can lead to strong vibrations, which in turn may cause panic. The present research focuses on analysis of a simply supported slab strip subjected to crowd load. The crowd-structure interaction is analytically modelled and the modal parameters and the response of the occupied structure are determined. Furthermore, the effect of various parameters such as crowd size, crowd location and crowd activity on the behavior of occupied structure is studied. The comfort level of the people on the structure is also estimated. It is observed that crowd parameters affect the behavior of the system as well as the comfort level of the occupants. It is further seen that the trend of variation of natural frequency of the occupied structure with variation in crowd properties changes with change in the empty structure properties.

Published
2019
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20. Rock Mechanics and Engineering Volume 3

Author

Leandro R. Alejano, Zhongwei Chen, Ebrahim Ghasemi, Dr. Anitha Kumari S D, Mehdi Rahmanpour, Carlo Esposito, Wengang Zhang, Fernando García Bastante, Raquel Velloso, Anthony Goh, and Martina Inmaculada Álvarez Fernández

Subjects
Materials science, Volume (thermodynamics), Rock mechanics, Geotechnical engineering
Published
2017
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26. Effect of structural irregularities on the seismic behavior of reinforced concrete frames.

Author

Siva Naveen, E., Abraham, Nimmy Mariam, and Anitha Kumari, S. D.

Subjects
*EARTHQUAKE resistant design, *REINFORCED concrete, *PATTERNS (Mathematics), *SEISMIC response, *DYNAMIC loads
Abstract

Seismic response of multi-storey buildings depends on the distribution of mass, stiffness, strength and geometry in both horizontal and vertical planes of the building. The irregular configurations either in plan or in elevation may cause severe damage in structural system during earthquake events. Locations of sudden change in mass, stiffness and geometry in structures are weak points. Structures possess combination of irregularities. The consideration of single irregularity may not result in realistic prediction of seismic response. Hence, for the safe design of irregular buildings, it is significant to study the combined effect of irregularities on the response of buildings to dynamic loads. The present work addresses the effect of mass, stiffness and vertical geometry on the seismic response of frames. Twenty one different cases of irregularities along with their combinations were studied and compared. Linear elastic time history analysis was performed to evaluate the seismic response of these structures analytically and the results obtained were then compared with the numerical results obtained from finite element software. The analytical results were observed to follow the same pattern as that of numerical studies. Of all the different frame configurations with irregularities analysed, the configuration with combination of mass, stiffness and vertical geometric irregularity has displayed maximum response whereas the one with mass irregularity alone had shown higher base shear and overturning moment. [ABSTRACT FROM AUTHOR]

Published
2019

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