论文部分内容阅读
采用中性平衡法推导出横向荷载作用下无对称轴截面单向压弯钢构件的平衡微分方程,通过分析单轴对称截面压弯构件的受力和变形,对切向力方向进行了重新定义和说明。结合具体的荷载形式对双向压弯构件的总势能方程进行改造,得到横向荷载作用下两个无对称轴截面单向压弯构件的典型总势能方程,经过一阶变分为零,即δΠ=0,得到平衡微分方程。最后通过比较两种方法得到的平衡微分方程,说明给出的两个总势能方程的适应性。
By using the neutral balance method, the equilibrium differential equations of the uniaxial-bending steel members with asymmetric axis under lateral load are deduced. The direction and the direction of the tangential force are redefined by analyzing the force and deformation of the uniaxial-bending steel members with the uniaxial symmetry section And instructions. The total potential energy equation of the biaxial compression-bending member is modified with the concrete load form, and the typical total potential energy equation of the uniaxial compression-bending member with two asymmetric axis under lateral load is obtained. After the first-order variation is zero, that is, δΠ = 0, to obtain balanced differential equation. Finally, by comparing the equilibrium differential equations obtained by the two methods, the adaptability of the two equations of total potential energy is given.