摘要
框支转换层由四周交圈的框支转换梁和正交转换次梁组合而成。本文研究了转换层在垂直荷载和水平荷载作用下的性能。转换次梁的设置减小了转换主梁的剪跨比，导致转换主梁在剪跨比较小区段较早的出现剪切破坏，四周交圈的转换梁形成一封闭环梁，使梁裂缝延伸发展缓慢，并大大提高对柱端转动的约束。转换梁受力性能受梁、柱线刚度比、交圈梁的刚度比、梁的剪跨比及梁的钢筋配置构造、荷载作用方式等因素的影响。
The transfer story is composed of periphery transfer beams and orthogonal secondary beams with framed pillars.In this paper,the behavior of transfer story is studied under the vertical loading and the horizontal loading.Since the secondary beams can reduce the shear span ratio of the transfer beam,it may result in its earlier shear failure.Because the periphery transfer beams can form a ring beam,the cracks on the transfer beam develop slowly and the restraint of rotation at the column ends increases greatly.The bearing behavior of the transfer beam is influenced by the mode of loading,the stiffness ratio of orthogonal beams,the shear span ratio and the line stiffness retio of beam to column etc.
出处
《建筑科学》
1997年第5期12-17,共6页
Building Science
关键词
转换层
转换主梁
正交次梁
剪切破坏
高层建筑
transfer story
transfer beam:orthogonal secondary beam
framed pillar
shear failure
