箱形截面简支弧形钢连廊静力和振动舒适度分析与设计

Static and vibration comfort analysis and design of simply supported curved steel corridor with box section

一弧线形跨高比为30的连廊,具有扭转、跨度大、截面小、质量轻和阻尼小等特点。为满足建筑美观和结构受力需求,采用了一种实腹式箱形截面、支座为一端铰接一端滑动连接的钢结构连廊。运用ANSYS软件进行静力分析和振动舒适度计算分析,结果表明:结构强度、刚度和自振频率在规范限值范围内,最不利位置的峰值加速度值满足规范要求。对弧形简支连廊两端支座进行受力分析表明:端支座存在拉力和不均匀压力作用,为连廊支座设计提供了依据。通过该特殊案例计算分析,为今后该类型钢结构连廊的计算分析奠定基础和实践应用提供参考。

An arc-shaped corridor with a span to height ratio of 30 has the characteristics of torsion,large span,small section,light weight and low damping.In order to meet the requirements of building aesthetics and structural force,a steel structure corridor with solid belly box section and support is hinged at one end and sliding connected at the other end is adopted.ANSYS software is used for static analysis and vibration comfort calculation analysis.The results show that the structural strength,stiffness and natural vibration frequency are within the limit range of the specification,and the peak acceleration value of the most unfavorable position meets the specification requirements.The force analysis of the two ends of the curved simply supported corridor shows that there is tension and uneven pressure on the end support,which provides a basis for the design of the corridor support.Through the calculation and analysis of this special case,it can lay a foundation for the calculation and analysis of this type of steel structure corridor in the future and provide a reference for practical application.