中文摘要：

GB50010．2002《混凝土结构设计规范》（以下简称《规范》）计算偏心受压构件正截面承载力时需要判断大小偏心，计算步骤较繁琐，计算公式存在缺陷。针对《规范》的不合理性提出了一个统一纯弯．偏压一轴压三种受力状态的计算公式，统一公式具有明确的物理意义，并且与试验数据拟合较好。利用统一公式计算对称配筋偏压构件时可取消大小偏心判断，计算所得的钢筋面积能返回统一公式验算。规范公式的偏压构件承载力％．帆相关曲线在大小偏心交界处会出现尖点，小偏心段不能很好地与轴压点衔接；统一公式的帆．M曲线是一条连续光滑的曲线，曲线连接了纯弯、偏压、轴压三个受力状态，具有明确的物理意义。统一曲线与规范曲线可以较好地吻合。比较统一公式与规范公式计算所得的钢筋面积，结果表明规范公式的小偏心受压和轴压的配筋存在突变，而在接近轴压点时小偏心计算较轴压公式偏不安全，而统一公式的配筋计算具有较好的过渡性，并且计算精度满足工程的要求，可靠指标满足GB50068—2001《建筑结构可靠度设计统一标准》的要求。

英文摘要：

The calculation steps of eccentric compression members in the current GB50010-2002 are tedious. A unified calculation method is derived to connect axial compression, eccentric compression and pure bending. The unified formula has a definite physical meaning and fit the experimental data well. The step of judging the type of eccentricity can be canceled and the calculated reinforcement area can be returned to the unified formula for checking. In the code Mu-Nu curve, a sharp point appeared at the junction of the large eccentric compression curve and the small one, and the small eccentric compression curve could not be connected with the axial point. Whereas the unified Mu-N,, correlation curve is a continuous smooth curve connecting the three force states. The unified M,,-Nu curve is in a good agreement with the Code curve. The results show that there is a reinforcement mutation between the small eccentricity formula and axial compression formula of the code. The small eccentric formula near the axial compression point is not safe. The reinforcement calculation of the unified formula has a good transition and can meet the demand of GB 50068-2001.