摘要
根据钢-混凝土结合梁计算原理和能量变分法,推导了曲线钢-混凝土结合梁考虑弯扭耦合作用、混凝土板及钢梁翼缘正应力的剪滞效应和钢与混凝土相对滑移影响的几何线弹性控制微分方程,然后采用样条最小二乘配点法求其近似解,得出了荷载作用下结构的内力和位移,分析了混凝土截面尺寸以及钢与混凝土相对滑移、剪滞效应对结构的影响.
Based on the calculating principle of steel-concrete composite beam and energy-variation method, the geometric linear-elastic governing differential equation of curve steel-concrete composite beam is obtained. Meanwhile, the equation also considers moment-torsion coupling, the shear lag effect of the stress of concrete slab and flange of steel beam as well as the relative slip between steel beam and concrete slab. The equation is solved with minimum two multiplication allotting point method. The internal force and displacement of the structures under the action of loads are located. The influence of the section size of concrete slab, relative slip between steel and concrete and shear lag on the structure is analyzed.
出处
《河北工业大学学报》
CAS
北大核心
2011年第6期75-78,共4页
Journal of Hebei University of Technology
基金
国家自然科学基金(50978058)
广东省自然科学基金(9151063101000050)
关键词
曲线钢-混凝土结合梁
相对滑移
剪滞
控制方程
能量变分法
curved steel-concrete composite beam
relative slip
shear lag
governing equation
energy-variation method
