Civil Engineering and Architecture Vol. 12(1), pp. 499 - 508
DOI: 10.13189/cea.2024.120136
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The Assessment of Structural Damages by Potential ML 7.0 Changhua Earthquake in Taiwan Using Hybrid Simulation Method, Modal Analysis and Story Drift Ratio


Boi Yee Liao 1,*, Sen Xie 2
1 Graduate Program of Engineering Technology Management, International College, Krirk University, Thailand
2 International College, Krirk University, Thailand

ABSTRACT

This study aims to assess the structural damages caused by the potential Changhua earthquake (ML 7.0). The hybrid broadband waveform is employed to simulate the strong motions in Changhua County at first, and the modal analysis method is then used to estimate two significant parameters, the roof story drift ratio (RDR) and maximum inter-story drift ratio (MIDR), to correlate the damages of the buildings with 4-story frames. To validate the corrects of the relationship between the parameters and injuries of the structures, we use the 1999 Chi-Chi earthquake (ML 7.3), which is the largest earthquake that occurred in central Taiwan, and the 2016 Meinong earthquake (ML 6.6) as two real examples in the theoretical tests. According to the results of the tests, 90 percent of the damaged buildings with 1~4 floors are located in places with RDR values greater than 0.035 and MIDR values greater than 0.04, respectively. The results represent the thresholds of RDR and MIDR, which are 0.035 and 0.04, consistent with the tables in Hazus (2001). Based on the theoretical tests, the assessment of the buildings damaged by a potential Changhua earthquake (ML 7.0), which occurred on Feb. 12, 1848, due to the Changhua fault's movement, is evaluated. The hybrid simulation method and modal analysis are employed to calculate the distributions of RDR and MIDR caused by the potential Changhua earthquake in Changhua County. Results of the research indicate that most of the buildings with 1~4 floors in Changhua County may be destroyed seriously, especially for the buildings in the populated areas such as Changhua and Yuanlin cities and Xianxi, Lukang townships which can cause considerable damage over large areas. Establishing rescue and relief joint coordination mechanisms is the most crucial work to reduce the destructiveness of the potential earthquake disaster.

KEYWORDS
Hybrid Simulation Method, Modal Analysis, Roof Storey Drift Ratio, Inter-Story Drift Ratio

Cite This Paper in IEEE or APA Citation Styles
(a). IEEE Format:
[1] Boi Yee Liao , Sen Xie , "The Assessment of Structural Damages by Potential ML 7.0 Changhua Earthquake in Taiwan Using Hybrid Simulation Method, Modal Analysis and Story Drift Ratio," Civil Engineering and Architecture, Vol. 12, No. 1, pp. 499 - 508, 2024. DOI: 10.13189/cea.2024.120136.

(b). APA Format:
Boi Yee Liao , Sen Xie (2024). The Assessment of Structural Damages by Potential ML 7.0 Changhua Earthquake in Taiwan Using Hybrid Simulation Method, Modal Analysis and Story Drift Ratio. Civil Engineering and Architecture, 12(1), 499 - 508. DOI: 10.13189/cea.2024.120136.