- 摘 要
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高立堂1,2 董毓利2 袁愛民2
(1.西安建筑科技大學(xué) 710055; 2.青島建筑工程學(xué)院 266033)[提要] 主要研究了受火無粘結(jié)預(yù)應(yīng)力混凝土簡支板的溫度場(chǎng)分布和板的變形情況,并給出了鋼筋保護(hù)層的厚度、預(yù)應(yīng)力度對(duì)無粘結(jié)預(yù)應(yīng)力混凝土簡支板受火性能的影響。為無粘結(jié)預(yù)應(yīng)力混凝土板的火災(zāi)行為的理論研究提供了依據(jù)。
[關(guān)鍵詞] 混凝土 簡支板 火災(zāi) 溫度場(chǎng) 保護(hù)層厚度 無粘結(jié)預(yù)應(yīng)力 預(yù)應(yīng)力度The behavior of simple supported slabs of unbonded prestressed concrete under fire is investigated. From the test results, the regularities of temperature field and deformation are presented, and the effect of different concrete covers and prestressing level on the behavior of the slabs is given. Results provide a basis for further research to explore fire behavior of prestressed concrete structures with unbonded tendon.
Keywords: simple supported concrete slab; fire; unbonded prestress concrete; temperature field; cover; prestressing level參 考 文 獻(xiàn)
1.華毅杰.預(yù)應(yīng)力混凝土結(jié)構(gòu)火災(zāi)反應(yīng)及抗火性能研究.博士學(xué)位論文,同濟(jì)大學(xué),2002.
2.李明,朱永江,王正霖.高溫下預(yù)應(yīng)力筋和非預(yù)應(yīng)力筋的力學(xué)性能.重慶建筑大學(xué)學(xué)報(bào),1998,20(4).
3. I.Cabrita Neves, Joao Paulo C. Rodrigues, Antonio de Padua Loureiro. Mechanical properties of reinforcing and prestressing steel after heating. Journal of Materials in Civil Engeering,1996.
4.建筑構(gòu)件耐火試驗(yàn)辦法(GB9978-88).
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