中文摘要：

试验表明，钢筋混凝上构件在压（拉）弯剪共同作用下，各种受力状态下的强度是相关的。为了反应构件住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，推导出俐筋混凝上构件住压（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棚关性，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。

英文摘要：

Tests of reinforced concrete （RC） members subjected to compression （tension）, bending and shear indicated that the strength depends on the loading condition. By introducing the shear-force term into the compression （tension）-bending interaction equation, the paper presents a strength formula considering the overall interactions of compression （tension）, shear and bending. The formula reasonably reflects the real stress state of members and agrees well with the experiment data. Finally, strength envelope of the compression （tension）-bending interaction equation was drawn according to the formula. The strength envelope can be used to obtain the stress state of member easily and evaluate the condition of members under combined compression （tension）, shear and bending. It can be used as a criterion to determine the member dissociation in the collapse analysis.