摘要
通过几个实际工程例子,指出结构优化设计,可以从结构整体出发,弱化整体结构刚度,降低结构的地震反应;可以从构件间的连接出发,减去不必要的约束;可以从一个构件出发,使杆件的形式与受力特点相一致;可以从一个节点出发,使其变得更加简单可靠。"弱化"的思想,是从繁杂的结构特性中梳理出少量甚至单个的、过强的结构特性,利用同步失效准则或满应力准则,使整体结构和各构件的承载能力极限状态、正常使用极限状态接近且不小于规范的要求,以达到节约材料、便于建造和结构美观合理的目的。
Through several engineering examples , this paper points out that structural optimization design can be starting from several aspects .First, it can optimize the whole structure to reduce the seismic response of structures by weakening the overall structure stiffness . It can also be realized by releasing unnecessary constraints between the components .Optimization also can be done by making the bar section with suitable mechanical characteristics or by designing simple and reliable nodes .The concept of weekening can sacrifice a small amount of excessive structural characteristics to make the bearing capacity limit state and serviceability limit state of the whole structure and components easily meet the requirements of specifications with less cost and convenient construction .
出处
《结构工程师》
北大核心
2014年第5期29-34,共6页
Structural Engineers
关键词
结构优化设计
“弱化”的思想
结构刚度
地震反应
内力特点
structural optimization design
concept of weekening
structural stiffness
earthquake response
internal force
