受高溫作用時預(yù)應(yīng)力鋼絞線性能的試驗研究
范 進 呂志濤
- 摘 要
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范 進 （南京理工大學(xué) 210094）呂志濤 （東南大學(xué) 南京 210096）[提要] 通過對預(yù)應(yīng)力鋼絞線在不同溫度下共36根實材試件的力學(xué)性能試驗，得到了鋼絞線極限強度、屈服強度、彈性模量隨溫度的變化規(guī)律，給出了其力學(xué)模型，為預(yù)應(yīng)力混凝土結(jié)構(gòu)的抗火分析研究提供了依據(jù)。
[關(guān)鍵詞] 鋼絞線 試驗 溫度 力學(xué)性能 力學(xué)模型
Steel strand is usually used in the prestressed concrete structures. By experiment on material properties of 36 prestressed steel strand members at high temperatures, we obtained tensile strength, yield strength, modulus of elasticity of steel strand at high temperatures and its mechanics models. It supplies the basis for the analysis and study about fire resistance of prestressed concrete structures.
Keywords: steel strand; experiment; temperature; material property; mechanics model
