梁端锚固情况对锈蚀梁协同工作系数影响研究

Study of the Influence of Anchor Situation on Coordination Coefficient of the Corroded Reinforced Concrete Beam

通过将镑蚀钢筋混凝土梁视为由镑蚀钢筋和混凝土组成的存在粘结滑移的组合梁，以螃蚀钢筋与混凝土之间的变形协调条件为依据，推导出镑蚀钢筋混凝土梁非线性微分方程．通过求解该微分方程得到的非线性解析解，得出了以镑蚀钢筋混凝土梁特征值天表达的截面协同工作系数理论表迭式．通过该协同工作系数，讨论了梁端锚固情况对协同工作系数的影响，得出了一些有益结论、

The corroded reinforced concrete beam is regarded as a composite beam which consists of corroded steel bars and concrete,with bond-slip considered. According to the deformation compatibility relationship between corroded steel bars and concrete, a nonlinear differential equation for the beam is derived. Moreover, a nonlinear analytical solution is obtained by solving the differential equation, by which a coordination coefficient in the form of the characteristic value of the beam （~λ） is deduced. Through the coordination coefficient, the influence of anchor situation on coordination coefficient of the corroded reinforced concrete beam is discussed and some other useful conclusions are also drawn.