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http://dx.doi.org/10.15683/kosdi.2022.9.30.646

Study of Structural Stability and Seismic Performances of 4-Way Sway Prevention Brace  

O, Soo Un (Seoul National University of Science and Technology)
Lee, Hang Jun (Make soon Inc.)
Choa, Sung Hoon (Seoul National University of Science and Technology)
Publication Information
Journal of the Society of Disaster Information / v.18, no.3, 2022 , pp. 646-659 More about this Journal
Abstract
Purpose: In this study, we developed a 4-way sway prevention brace that efficiently reduces the installation area and has excellent stability and seismic performance compared to the conventionl sway prevention brace used in existing firefighting facilities. The performance and reliability of the developed 4-way way prevention brace were analyzed by the tensile, compression tests and seismic tests. Method: As the static test, 4-way sway prevention braces were installed on the horizontal and vertical pipes to perform the tensile and compression tests based on the KFI certification standard and the maximum movement was measured at the rated load. As a dynamic test, 4-way sway prevention braces were installed in the pipes filled with water, and the test response spectrum to the input excitation wave were measured through the acceleration sensors. After the seismic tests, separation, failure, and local deformation of the pipes, and 4-way sway prevention braces were not observed. Result: The results of the tensile and compression tests indicated that the maximum movement of the pipe during tension and compression was 50% to 70% or less compared to the certification values, indicating that the performances of the 4-way sway prevention braces were very excellent. The results of the the seismic tests indicated that the test response spectrum of the 4-way sway prevention braces is within the required response spectrum. Conclusion: In this study, it was found that the 4-way sway prevention braces satisfied the KFI certification standard and were superior compared to the existing sway prevention brace in terms of the stability, cost, and installation area.
Keywords
4-way Sway Prevention Brace; Pipe; Tensile Test; Compression Test; Seismic Test; Test Response Spectrum;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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