鋼筋混凝土雙向偏心受壓矩形截面構(gòu)件正截面承載力簡便算法
麻志剛
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(中國兒童中心， 北京 100035)［摘要］借鑒澳大利亞《混凝土結(jié)構(gòu)設(shè)計規(guī)范》(AS 3600-2001)和美國《混凝土結(jié)構(gòu)設(shè)計規(guī)范》(ACI 318-05)，針對鋼筋混凝土雙向偏心受壓矩形截面構(gòu)件，根據(jù)中國《混凝土結(jié)構(gòu)設(shè)計規(guī)范》(GB 50010—2010)附錄E算法擬合得到符合中國混凝土結(jié)構(gòu)設(shè)計的極限彎矩曲線方程，比較結(jié)果顯示，提出的極限彎矩曲線方程與中國《混凝土結(jié)構(gòu)設(shè)計規(guī)范》(GB 50010—2010)規(guī)定的附錄E算法和Nikitin算法計算結(jié)果比較接近且偏于安全，可以作為一種簡便算法供工程師設(shè)計參考使用。［關(guān)鍵詞］鋼筋混凝土; 雙向偏心受壓; 正截面承載力; 算法中圖分類號：TU375文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2013)23-0087-05Simplified calculating method for normal section load-bearing capacity of reinforced concrete rectangular cross-section component under biaxial bending and compressionMa Zhigang(China National Children’s Center, Beijing 100035, China)Abstract: Referring the design methods for reinforced concrete rectangular cross-section component subjected to biaxial bending and compression in codes of AS 3600-2001 & ACI 318-05, an ultimate bending moment curve equation was obtained according to the calculating method of appendix E in code GB 50010—2010. Comparing different results, it is indicated that the results of obtained ultimate bending moment curve equation are close to the ones from calculating methods of appendix E in code GB 50010—2010 and of Nikitin formula. Furthermore, the obtained results are conservative. Obtained simplified calculating method can be used as a reference analysis method for civil engineers.Keywords: reinforced concrete; biaxial bending and compression; normal section load-bearing capacity; calculating method作者簡介：麻志剛，碩士，工程師, Email: macnet@ce.buaa.edu.cn。參考文獻(xiàn)［1］GB 50010—2010 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，2011.［2］AS 3600-2001 Australian standardsTM concrete structures［S］. Standards Australia International Ltd GPO Box 5420, Sydney, NSW 2001,Australia, 2001.［3］ACI 318-05 Building code requirements for structural concrete［S］. American Concrete Institute Committee 318, 2005.［4］盧偉煌. 鋼筋混凝土雙向偏心受壓矩形截面直接設(shè)計方法［J］. 建筑結(jié)構(gòu)，2003，33(12):36-38.
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