建筑结构刚重比规范算法研究及PKPM软件实现

Research on algorithm and PKPM software implementation of stiffness-weight ratio of buildings structure

刚重比是衡量建筑结构整体稳定性的重要指标。根据倒三角荷载模式下的悬臂柱力学模型,提出适应任意荷载分布形式的刚重比计算公式,并给出钢结构、钢混组合结构刚重比的设计限制。结合实际工程,采用PKPM软件建立不同结构的模型,对比分析风荷载或地震作用两种常见水平荷载下的刚重比软件计算结果与理论计算值,两者吻合较好。

The stiffness weight ratio is an important index to measure the overall stability of the structure.According to the cantilever column mechanical model under the inverted triangular load mode,this paper puts forward the calculation formula of the stiffness weight ratio suitable for any load distribution,and gives the design limitation of stiffness weight ratio of steel structure and steel-concrete composite structure.Combined with the actual project,the models of different structures are established by using PKPM software.The stiffness weight ratio calculation results of the software under two common horizontal loads of wind load or earthquake are compared and analyzed,which are in good agreement with the theoretical calculation value.