Assessing the Seismic Demands on Non-Structural Components Attached to Reinforced Concrete Frames

Author:

Challagulla Surya Prakash1,Kontoni Denise-Penelope N.23ORCID,Suluguru Ashok Kumar4ORCID,Hossain Ismail5ORCID,Ramakrishna Uppari6ORCID,Jameel Mohammed7ORCID

Affiliation:

1. Department of Civil Engineering, Koneru Lakshmaiah Education Foundation, Vaddeswaram, Guntur 522302, Andhra Pradesh, India

2. Department of Civil Engineering, School of Engineering, University of the Peloponnese, GR-26334 Patras, Greece

3. School of Science and Technology, Hellenic Open University, GR-26335 Patras, Greece

4. Department of Civil Engineering, Malla Reddy Engineering College, Maisammaguda 500100, Telangana, India

5. School of Natural Sciences and Mathematics, Ural Federal University, 620000 Yekaterinburg, Russia

6. Department of Civil Engineering, Vignana Bharathi Institute of Technology, Hyderabad 501301, Telangana, India

7. Department of Civil Engineering, College of Engineering, King Khalid University, Asir, Abha 61421, Saudi Arabia

Abstract

Nonstructural components (NSCs) are the systems that are attached to the floors of a building structure. NSCs have become critical in sustaining post-earthquake functionality while constructing seismic-resilient structures. The seismic behavior of the NSCs primarily depends upon the behavior of the structure to which the NSC is attached. Building structures are subjected to earthquake loads and behave differently when the supporting soil type varies. In light of this, this study investigates the seismic demands on NSC attached to the floors of an elastic-reinforced concrete building frame supported by different soil types. The present study considered a regular building frame and a building frame with mass irregularity on the lower story. A total of 3 sets of 11 horizontal spectral-matched ground motions consistent with each soil type are considered. Floor response spectra (FRS) can be used to measure the seismic load on non-structural components. Primarily, it was found that the ordinates of FRS depend on the floor height, the vibration periods of the building, and the soil type. The presence of mass irregularity at the lower story amplified the floor response at all floor levels. Additionally, the values of floor spectral acceleration increase as soil flexibility increases. The amplification factors are critical for generating the floor response spectra, and their variation along the building height is discussed. The floor acceleration was found to vary non-linearly with the height of the building. Finally, artificial neural networks (ANNs) are employed to develop the prediction models for dynamic amplification factors. The results calculated by the dynamic time history analyses are utilized to validate the proposed prediction models.

Publisher

MDPI AG

Subject

Fluid Flow and Transfer Processes,Computer Science Applications,Process Chemistry and Technology,General Engineering,Instrumentation,General Materials Science

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