（1 中衡设计集团股份有限公司， 苏州 215021；2 江苏省生态建筑与复杂结构工程技术研究中心， 苏州 215021）

［摘要］舒适度验算通常采用的经验公式法和时域分析法，在特定情况下存在不足。梳理了大跨度楼盖舒适度计算的基本理论，介绍了频域分析法，同时对比了时域分析法和频域分析法的优缺点，如时域分析法适用性广但可能无法获得最不利动力响应；而频域分析法可以一次性获得各人行激励荷载频率下的动力响应，但仅适用于固定位置的激励荷载。最后结合某工程大跨度钢结构连廊，针对其钢与混凝土组合楼盖在人行激励荷载下可能发生的舒适度不足问题，分别采用时域分析法和频域分析法，对楼盖竖向加速度响应进行了分析验算，并介绍了应用要点，可供类似工程分析参考。

［关键词］大跨度连廊； 舒适度； 时域分析法； 频域分析法

中图分类号：TU375文献标识码：A文章编号：1002-848X(2019)01-0043-06

Comparison and application of time-domain analysis method and frequency-domain analysis method for comfortability analysis

Zhang Jin1,2, Yang Lülei 1,2, Zheng Zhigang1,2, Gong Minfeng1,2

(1 ARTS Group Co.,  Ltd.,  Suzhou 215021, China； 2 Jiangsu Engineering Institute of Ecological Building & Complex Structure, Suzhou 215021, China)

Abstract:The empirical formula method and the time-domain analysis method, which are usually used for comfortability check, have shortcomings under certain circumstances. The basic theory of comfortability calculation of large-span floor was summarized, and the frequency-domain analysis method was introduced. At the same time, the advantages and disadvantages of  the time-domain analysis method and the frequency-domain analysis method were compared. For example, the time-domain analysis method is widely applicable but may not obtain the most unfavorable dynamic response; while the frequency-domain analysis method can obtain the dynamic response of each pedestrian excitation frequency at one time, but only for the excitation load at fixed position. Finally, aiming at the problem of insufficient comfortability of the steel and concrete composite floor under the pedestrian excitation load, the time-domain analysis method and the frequency-domain analysis method were used to analyze and check the vertical acceleration response of the floor, and the application points were introduced for reference for similar engineering analysis.

Keywords:large-span corridor; comfortability; time-domain analysis method; frequency-domain analysis method

作者简介：张谨，研究员级高级工程师，一级注册结构工程师，英国注册结构工程师，Email: zhangjin@artsgroup.cn。