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各國規(guī)程對圓鋼管混凝土短柱軸壓承載力對比分析*
何夕平,劉申,張大偉
摘 要
(安徽建筑大學(xué)土木工程學(xué)院,合肥 230022)
 
[摘要]介紹了計算圓鋼管混凝土短柱軸壓承載力的8種國內(nèi)外規(guī)程,依據(jù)各規(guī)程計算公式,對21根圓鋼管混凝土短柱試件的軸壓承載力進行理論計算,并將理論計算結(jié)果與試驗結(jié)果進行對比分析。結(jié)果表明:雖然各規(guī)程在計算公式的表達上各不相同,但所考慮的因素基本一致,其計算結(jié)果大多偏于保守。并對基于統(tǒng)一理論的我國規(guī)程和基于疊加理論的國外規(guī)程的計算值與試驗值進行了對比,《鋼管混凝土結(jié)構(gòu)技術(shù)規(guī)程》(DBJ 13-51—2003)偏差程度最小,計算結(jié)果相對較為準確。
[關(guān)鍵詞]圓鋼管混凝土; 短柱; 軸心受壓; 理論計算; 對比分析
中圖分類號:TU398+.9      文獻標識碼:A      文章編號:1002-848X(2015)05-0059-04
 
Comparative analysis of axial compression bearing capacity of circular concrete filled steel tube short columns calculated by codes at home and abroad
He Xiping, Liu Shen, Zhang Dawei
(College of Civil Engineering, Anhui Jianzhu University, Hefei 230022, China)
 
Abstract: Eight kinds of domestic and foreign codes of circular concrete filled steel tube short columns for calculatiug axial compression bearing capacity were introduced. According to the calculation formulas of each code, theoretical calculation of axial compression bearing capacity of 21 circular concrete filled steel tube short columns was given, and the theory calculated results were compared with the experimental results. The results show that although there are differences in form among these calculation formulas of the codes, but the factors considered in these codes have little difference and most of the calculated results are conservative. The calculation values of our country codes based on the unified theory and abroad codes based on superposition theory were compared with the experimental values. The deviation degree of Technical specification for concrete-filled steel tubular structures(DBJ 13-51—2003) is the smallest and the calculation result derived by this code is relatively accurate.
Keywords: circular concrete filled steel tube; short column; axial compression; theoretical calculation; comparative analysis
*國家科技支撐計劃課題資助(2011BAJ03B04),安徽省教育廳高等教育振興計劃課題資助(2013zdjy121)。
作者簡介:何夕平,碩士,教授,注冊造價工程師,注冊監(jiān)理工程師,Email:1047080558@qq.com。
 
參考文獻
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