摘要
本文对两个弯剪型抗侧力结构在水平荷载作用下的共同工作进行了分析。推导了基本微分方程并得到了水平均布荷载下的解析解。算例表明,一个结构的抗弯刚度参与另一个结构共同工作的能力受到自身抗剪刚度的影响;反之,一个结构的抗剪刚度参与另一个结构共同作用的能力也受到自身抗弯刚度的影响。本文还提出了一个简单的、利用两个弯剪型子结构作为独立结构在水平力作用下的挠度,构造双重弯剪型结构在相同水平力作用下水平挠度的方法,对比表明,这种构造出来的挠度与精确解挠度非常接近。通过这种构造模型,对双重弯剪型结构之间的相互作用可以获得非常直观的了解和理解,本文建议了一个串联-并联电路来帮助理解双重抗侧力结构之间的共同作用。
The interaction between two shear flexural substructures in a dual system under horizontal loads is studied in this pa per. Equilibrium differential equations are derived, and for the horizontally uniformly loaded system, closed form solution is obtained. The examples show that the efficiency of the flexural rigidity in one substructure to participate in resisting load together with the remaining structure in a dual system is affected by its shear stiffness, and vice versa. A simple model is proposed in which the two substructures may be regarded as independent structures and deflections are solved for the two independent substructures. These deflections are then used to estimate the deflection of the dual system. Comparison shows that the estimated deflection is close to the exact solution. The model is then used to explain the complicated interaction between two substructures in a dual system. An electrical circuit is used to help understanding the interaction between substructures.
出处
《建筑钢结构进展》
2008年第5期28-34,共7页
Progress in Steel Building Structures
基金
国家自然科学基金项目(50578140)
