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工程力学  2013 

钢筋混凝土构件在压、拉弯剪共同作用下的强度包络图研究

DOI: 10.6052/j.issn.1000-4750.2011.10.0661, PP. 224-232

Keywords: 钢筋混凝土,压弯相关性,复合受力,受力状态,包络图

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Abstract:

试验表明,钢筋混凝土构件在压(拉)弯剪共同作用下,各种受力状态下的强度是相关的。为了反应构件在压弯剪和拉弯剪共同作用下各强度之间的相关性,该文以压(拉)弯相关性为基础,通过引入剪力项,推导出钢筋混凝土构件在压(拉)弯剪复合受力下的强度相关性公式,公式同时能够分别体现各种两两受力状态的强度相关性,并且与试验数据拟合良好,能够较真实地反映构件的受力状态。同时,以强度相关性公式为基础,绘制出了压(拉)弯剪强度包络图,并以该强度相关性公式和包络图为基础制定钢筋混凝土构件在压(拉)弯剪作用下的损伤标准,最终为结构抗倒塌研究中的构件抽离提供依据。

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