混凝土框架柱抗剪承载力计算公式的可靠度分析探讨
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摘要
通过试验研究,提出了基于能力设计法的框架柱塑性铰区抗剪承载力计算公式,并对此进行了可靠度分析,定量分析了该计算公式的可靠指标与剪跨比、配箍率等因素的关系。同时针对目前我国现行规范抗剪承载力计算的可靠度指标偏低较多的情况,该建议公式对不同抗震要求的构件提出了不同的可靠指标,既考虑了我国设计习惯,又体现了能力设计法的要求,充分考虑了安全性的要求,对工程应用具有较大的参考价值。论文的主要研究成果已被《混凝土结构设计规范》(GB50010-2002)吸收。
In China the reliability degree of the shear resistance is less safe than those in other countries. A seismic shear capacity predictive equation for ductility reinforced concrete columns based on capacity design philosophy is suggested after the shear test of 10 columns has been made. In the article, on the basis of test data collected from Japan and the test data, the reliability index of the suggested equation as to shear span ratio and transverse reinforcement is studied. The reliability index of the suggested equation is various with ductility levels, so the equation is more rational than that in Chinese Concrete Design Code (GBJ10-89). The results in the article are important to modify the Chinese concrete design code.
In China the reliability degree of the shear resistance is less safe than those in other countries. A seismic shear capacity predictive equation for ductility reinforced concrete columns based on capacity design philosophy is suggested after the shear test of 10 columns has been made. In the article, on the basis of test data collected from Japan and the test data, the reliability index of the suggested equation as to shear span ratio and transverse reinforcement is studied. The reliability index of the suggested equation is various with ductility levels, so the equation is more rational than that in Chinese Concrete Design Code (GBJ10-89). The results in the article are important to modify the Chinese concrete design code.
引文
[1] 管品武,邹银生,刘立新.反复荷载下钢筋混凝土框架柱抗剪承载力分析[J].世界地震工程.2000,16(2):52-56.
[2] 管品武.钢筋砼框架柱塑性铰区抗剪承载力试验研究及机理分析[D].长沙:湖南大学,2000.
[3] 杨柏林,管品武,孟会英.钢筋混凝土框架柱塑性铰区抗震剪切抗力———各国规范的比较[J].世界地震工程.2001,17(3):54-58.
[4] 马坤贞.调整规范公式可靠度指标的方法[R].见:中国建筑科学研究院结构所编.钢筋混凝土结构设计与构造.北京:中国建筑科学研究院,1985.18-28.
[5] 马宏旺,赵国藩.钢筋混凝土梁抗震可靠度校核以及强剪弱弯设计可靠性分析[J].建筑结构[J],2000,30(10):3-8.
[6] 《建筑结构设计统一标准》管理组.JBJ68-84建筑结构设计统一标准(试行)[S].1984.
[2] 管品武.钢筋砼框架柱塑性铰区抗剪承载力试验研究及机理分析[D].长沙:湖南大学,2000.
[3] 杨柏林,管品武,孟会英.钢筋混凝土框架柱塑性铰区抗震剪切抗力———各国规范的比较[J].世界地震工程.2001,17(3):54-58.
[4] 马坤贞.调整规范公式可靠度指标的方法[R].见:中国建筑科学研究院结构所编.钢筋混凝土结构设计与构造.北京:中国建筑科学研究院,1985.18-28.
[5] 马宏旺,赵国藩.钢筋混凝土梁抗震可靠度校核以及强剪弱弯设计可靠性分析[J].建筑结构[J],2000,30(10):3-8.
[6] 《建筑结构设计统一标准》管理组.JBJ68-84建筑结构设计统一标准(试行)[S].1984.
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