Earthquake wonders: High school investigation in mortise tenon structures

Aijia Yang

doi:10.54254/2753-8818/9/20240718

Research Article

Open access

Published on 13 November 2023

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Yang,A. (2023). Earthquake wonders: High school investigation in mortise tenon structures. Theoretical and Natural Science,9,62-72.

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Earthquake wonders: High school investigation in mortise tenon structures

Aijia Yang *^,1,

¹ Charles Wright Academy

* Author to whom correspondence should be addressed.

https://doi.org/10.54254/2753-8818/9/20240718

Abstract

Frequent global earthquakes lead to catastrophic property damage and casualties due to building collapses. However, the 1976 Tangshan Earthquake showcased an exception: the Forbidden City, constructed with wooden materials and featuring mortise-tenon structures, remained unscathed among surrounding destruction. This study investigates the earthquake-resilient attributes of wooden mortise-tenon joints utilizing economical high school equipment. An innovative low-cost sensor system, featuring custom instrumented hammer, is developed and validated. Calibration of the hammer's impact force employs correlation with acceleration data from a standardized scale weight during impact. The system's reliability is tested by comparing resonance frequencies from Finite Element modal analysis and experimental data for a cantilever beam. Impact hammer tests assess frequency response and damping across buildings with various joint configurations. Mortise-tenon joints display augmented frictional damping due to internal displacement. Through simulated vibration acceleration responses, a crucial finding emerges---integration of mortise-tenon joints translates to an impressive 11.0% reduction in earthquake vibrations. This research underscores the potential of accessible high school devices in advancing seismic engineering insights.

Keywords

Mortise-Tenon Joint, High School Instrumented Hammer, Earthquake Resistance, Frictional Damping

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References

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Cite this article

Yang,A. (2023). Earthquake wonders: High school investigation in mortise tenon structures. Theoretical and Natural Science,9,62-72.

Data availability

The datasets used and/or analyzed during the current study will be available from the authors upon reasonable request.

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About volume

Volume title: Proceedings of the 3rd International Conference on Computing Innovation and Applied Physics

Conference website: https://www.confciap.org/

ISBN：978-1-83558-129-2(Print) / 978-1-83558-130-8(Online)

Conference date: 27 January 2024

Editor：Yazeed Ghadi

Series: Theoretical and Natural Science

Volume number: Vol.9

ISSN：2753-8818(Print) / 2753-8826(Online)

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