摘要
根据软化桁架模型理论,通过力及力矩的平衡、变形协调和材料本构关系,得出在转矩作用下预应力组合梁的受扭强度、扭率、应力、应变、扭转角等一系列方程,并推导出在转矩作用下开、闭口截面钢-预应力混凝土组合梁的抗扭极限强度计算公式.
Based on the softened truss model, the equations of the torsional strength, torsional ratio, stress, strain and twisting angle of the pre-stressed steel-concrete composite beams under pure torsion are derived in the paper through the equilibrium conditions of forces and moments, and the deforma- tion and constitutive relationships, as well as the failure criteria of the materials. Finally the ultimate torsional strength formulas are proposed for the pre-stressed steel-concrete composite beams with open/closed section under pure torsion.
出处
《武汉理工大学学报(交通科学与工程版)》
2010年第2期362-365,369,共5页
Journal of Wuhan University of Technology(Transportation Science & Engineering)
关键词
钢-预应力混凝土组合梁
软化桁架模型理论
纯扭
抗扭极限强度
pre-stressed steel-concrete composite beams
soften truss model
pure torsion
ultimate torsional strength