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Studying the damping characteristics of the system of building and infrastructure considering the Soil-Structure Interaction

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  • Duong Hong Tham

    (Ho Chi Minh City Open University, Ho Chi Minh City, Vietnam)

Abstract

This paper studies the damping characteristics of the soil foundation under a building concerning the Soil-Structure Interaction (SSI). By considering a multi-story building resting on a piled raft foundation as a typical SSI system, subjected to an earthquake (i.e., Chi Chi earthquake, Taiwan 1999), the time-dependent responses of specified locations in the foundation are recorded and analyzed, both in-time domain and frequency domain. Referring to prior knowledge about system identification and damping, this study suggests an overwhelming approach to determining the damping ratio for analyzing more thoroughly a system of SSI systems. Results are a general procedure to establish the damping matrix, namely the Caughey damping matrix which takes several frequencies into account. A different viewpoint that the connection of superstructure and infrastructure in series could help to estimate the damping, and contribute to a wide range of system identification. All these procedures are used to predict more properly the damping characteristics of a system of structures. Suggestions over the findings would be expected to contribute a more rigorous component to the analysis of high-rise buildings in the future.

Suggested Citation

  • Duong Hong Tham, 2022. "Studying the damping characteristics of the system of building and infrastructure considering the Soil-Structure Interaction," HO CHI MINH CITY OPEN UNIVERSITY JOURNAL OF SCIENCE - ENGINEERING AND TECHNOLOGY, HO CHI MINH CITY OPEN UNIVERSITY JOURNAL OF SCIENCE, HO CHI MINH CITY OPEN UNIVERSITY, vol. 12(2), pages 99-110.
    • Handle: RePEc:bjw:techen:v:12:y:2022:i:2:p:99-110
    DOI: 10.46223/HCMCOUJS.tech.en.12.2.2480.2022
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