Feasibility of Using Small Steel Plates to Replace Regular Steel Beams as Test Specimens in the Assessment of Fire Rating of Coating materials

• Main Authors: Yi-Chu Tang, 唐益楚
• Other Authors: Ching-Yuan Lin
• Format: Others
• Language: zh-TW
• Published: 1994
• Online Access: http://ndltd.ncl.edu.tw/handle/45661636929412788867

碩士 === 國立臺灣科技大學 === 營建工程技術學系 === 82 === The fireproof capacity of coated steel structure is maintain by fire resistance rating(t), and the rating is close to section scale factor (W/D, unit weight/section fired circumambience) of steel structure and coating material thickness(T). The study is according to the view of section scale factor transfer, put all kinds of H style to be 45cm2 but differ thickness steel plate, make to small scale specimen, therefore, applying standard curve time-temperature under CNS 12514 to proceed truly fire resisting test of single degree heated model for small scale specimen ,and realize the truly relationship of t, T and W/D. However, according to theory analysis the feasibility of using small-scaled specimen replace coating steel structure and proceed the appraise of fireproof capacity. The kinds of coating steel structures are so much, so only study the model of wet coated structure (horizon-heating) painted around H style section.@　The study result detect that the mutidegree coating steel beam structure will transfer single degree small scale specimen and proceed fire resisting test by section scale factor, but must consider water evaporate condition and the affect of small specimen lost heat in high temperature. During the relationship of t, T and W/D, t is proportional with T and W/D. Form the result, the paper point of sprayed thickness of beam transfer formula common using now, and the managing method for examining the external qualify materials that recognized by the domestic authorities concerned, to provide the actual suggestion for the accordance of improving and examining.