论文部分内容阅读
正确计算和评价加固构件的刚度对受弯构件的变形计算及承载能力校核具有重要作用,计算加固构件的刚度应该计入前期荷载作用时初始变形的影响。文章在线弹性变形假定的基础上,应用钢筋混凝土结构理论,根据几何关系、物理关系、静力平衡关系推导出了碳纤维布加固梁在设计荷载作用下裂缝截面短期刚度的计算公式,并用实例对方法的可靠性进行了验证。
Correctly calculating and evaluating the stiffness of stiffened members plays an important role in the deformation calculation and checking of bearing capacity of flexural members. Calculating the stiffness of stiffened members should include the influence of the initial deformation during the early loading. Based on the assumption of on-line elastic deformation, based on the theory of reinforced concrete structure, the formula of short-period stiffness of cracked section reinforced with carbon fiber reinforced plastic (CFRP) beam under design loading is deduced according to the geometric, physical and static balance. The reliability has been verified.