Equivalent SDOF analysis considering initial clearance for steel-concrete composite blast-resistant doors

Hyeon-Sik Choi, Seong-Ryong Ahn, Young K. Ju, Hun-Hee Cho, Joon-Hak Lee, Sang-Ho Baek and Thomas H.-K. Kang

Abstract

This study proposed a method for predicting the behavior of sliding blast-resistant doors by considering the initial clearance of the doors to address the challenge of predicting performance of the doors. The behavior of steel-concrete composite blast doors was divided into two stages based on the initial clearance, and an equivalent single-degree-of-freedom analysis was performed using the central difference method. Comparison with experimental results confirmed that considering the initial clearance is effective for accurately predicting the behavior of sliding doors. Based on these findings, a simplified equation was proposed and validated to facilitate the prediction of the maximum displacement of sliding blast doors. Finally, an optimization case study was conducted using the simplified equation to design steel-concrete composite sliding blast-resistant doors.

Key Words

initial clearance; optimization; SDOF analysis; simplified equation; sliding blast-resistant door

Address

Hyeon-Sik Choi:Department of Architecture and Architectural Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea Seong-Ryong Ahn:Department of Architecture and Architectural Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea Young K. Ju:Department of Civil, Environmental and Architectural Engineering, Korea University, Anam-Dong, Seongbuk-gu, Seoul 136-713, Republic of Korea Hun-Hee Cho: Department of Civil, Environmental and Architectural Engineering, Korea University, Anam-Dong, Seongbuk-gu, Seoul 136-713, Republic of Korea Joon-Hak Lee:Department of Civil Engineering and Environmental Sciences, Korea Military Academy, 564 Hwarang-ro, Nowon-gu, Seoul 01805, Republic of Korea Sang-Ho Baek:Department of Civil Engineering and Environmental Sciences, Korea Military Academy, 564 Hwarang-ro, Nowon-gu, Seoul 01805, Republic of Korea Thomas H.-K. Kang:Department of Architecture and Architectural Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea

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