论文部分内容阅读
钢板深梁填充钢框架体系是一种新型的抗侧力结构体系,钢板深梁通过改变跨高比等参数不仅可以实现结构初始刚度能够在一定范围内调幅,而且使抗侧构件更容易安装或拆卸。以两侧加劲钢板深梁为研究对象,对其弹性屈曲性能进行了有限元分析,讨论不同加劲刚度对不同跨高比钢板深梁的加劲效果,并提出不同跨高比钢板深梁在加劲约束作用下的等效屈曲系数和嵌固系数。结果表明,跨高比越大,等效屈曲系数越小,实现屈曲模态转变所需加劲刚度越大,加劲效果越好。求得在屈曲模态转变点时,不同跨高比两侧加劲钢板深梁的加劲抗弯刚度比。提出对于跨高比在区间[0.5,1.0]的两侧加劲钢板深梁,嵌固系数可取1.23;对于跨高比在区间[1.0,2.0]时,嵌固系数取为1.0。分析结果为此类结构的抗侧设计提供了理论基础。
Steel deep-beam-filled steel frame system is a new type of anti-side-force structural system. The steel deep beam can not only realize the initial stiffness of the structure to be able to amplitude-modulate within a certain range by changing the parameters of span ratio, but also make the anti-side components easier to install or Disassemble. Taking the reinforced deep steel beams on two sides as the research object, the finite element analysis of the elastic buckling behavior is conducted. The stiffening effect of different stiffening stiffness on deep steel beams with different span ratios is discussed. Equivalent buckling coefficient and embedding coefficient under action. The results show that the larger the span-height ratio is, the smaller the equivalent buckling coefficient is, and the greater the stiffening stiffness required to achieve buckling mode transformation is, the better the stiffening effect is. When the buckling mode transition point is obtained, the ratio of stiffened flexural rigidity of deep steel beams with different steel plates with different span ratios is obtained. It is proposed that the coefficient of inlay should be 1.23 for stiffening steel deep beams on both sides of the span [0.5, 1.0] at the span-height ratio and 1.0 for the span ratio at the interval [1.0,2.0]. The analysis results provide a theoretical basis for the anti-side design of such structures.