摘要
本文根据Vlasov的薄壁杆件翘曲理论,采用有限元和解析相结合的分析方法,研究了四周与楼板连接的开口薄壁核芯筒的扭转刚度,考察了楼板出平面刚度对核芯筒受力性能的影响,提出楼板有效宽度的概念,推导出相应的计算公式。在实际工程设计计算中,可考虑楼板对核芯筒约束扭转的制约作用。
In this paper, a finite element analysis, in conjunction with Vlasov's theory of thin-walled beams has been used to study the torsional stiffening of thin-walled open-section core by the surrounding floor slabs. The relative influence of warping stiffnes of the floor slabs in tube-core structure on overall core behavior is examined, and the effective width of the floor slab is presented, a series of the calculation formulae are also established. The effect of the floor slab on tube-core may be considered in the practical design and computation.
出处
《西北建筑工程学院学报（自然科学版）》
1991年第1期20-25,共6页
Journal of Northwestern Institute of Architectural Engineering
关键词
楼板
高层
建筑物
核芯筒
受力性能
tube-core, core-opening ratio, equivalent connecting beam, warping stiffness, torsion
