鋼筋混凝土細長柱結(jié)構(gòu)在中震作用下若干問題研究
石立彬
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(蘇州九城都市建筑設(shè)計有限公司，蘇州 215000)［摘要］以蘇州工業(yè)園區(qū)職業(yè)技術(shù)學(xué)院新校區(qū)教學(xué)樓為背景，首先采用兩種可以考慮二階效應(yīng)影響的計算方法以及擬合公式分別計算在中震彈性作用下細長柱的配筋，并和η-l0計算法的結(jié)果進行比較。以細長框架柱在地震作用下的位移作為已知條件，求出細長柱的二階效應(yīng)變形曲線，再分別求出曲線的最大曲率和P-Δ，P-δ效應(yīng)值。通過上述分析探討鋼筋混凝土細長柱在地震作用下的受力特征及變形特點，為類似結(jié)構(gòu)的設(shè)計及抗震分析提供參考依據(jù)。［關(guān)鍵詞］鋼筋混凝土；細長柱；中震彈性；二階效應(yīng)中圖分類號：TU375文獻標(biāo)識碼：A文章編號：1002-848X(2011)05-0089-04Study on several questions of reinforcement concrete slender columns under elastic moderate seismic loadingShi Libin(Suzhou Jiucheng Dushi Architecture Design Co., Ltd., Suzhou 215000, China)Abstract:Based on the teaching building of the Professional Technology College located in Suzhou Industrial Estate, the reinforcements of slender column under the elastic moderate seismic loading were compared which considered second-order effect by two analysis methods, curve fitting formulas and the η-l0 method. The second-order effect deformation curve was calculated by the displacements of slender columns under the elastic moderate seismic loading. Maximum curvature and the effects of P-Δ and P-δ were calculated. According to above-mentioned studies, dynamic and deformation characteristics were discussed and it would be reference in the design and study on seismic behavior of the similar projects.Keywords:reinforcement concrete; slender column; elastic moderate seismic loading; secondorder effect作者簡介：石立彬，工程碩士，一級注冊結(jié)構(gòu)工程師，Email：shilibin1124@hotmail.com。參考文獻［1］黃宗明，張光瑋.大長細比鋼筋混凝土細長柱承載力試驗研究［J］. 建筑結(jié)構(gòu)，2008,38(10)：99-101.［2］GB50010—2002混凝土結(jié)構(gòu)設(shè)計規(guī)范［S］.北京：中國建筑工業(yè)出版社，2002.［3］Building code requirements for structural concrete (ACI 318-05) and commentary (ACI 318R-05) ［S］.American Concrete Institute, Farmington Hills, Mich, 2005.［4］魏巍，杜靜，白紹良. 細長偏心受壓鋼筋混凝土桿件的強度失效及穩(wěn)定失效極限承載力分析［J］. 工程力學(xué)，2006,23(04):114\|119.［5］王鐵成,車宏亞.混凝土結(jié)構(gòu)原理［M］. 天津：天津大學(xué)出版社，2002.
