夏美梦1，张良平2，尚文红2

(1 华森建筑与工程设计顾问有限公司杭州分公司， 杭州 310012；

2 华森建筑与工程设计顾问有限公司， 深圳 518054)

［摘要］以深圳市龙岗区某裙房建筑为分析对象，结构体系为框架-剪力墙结构。大跨度结构空间均采用钢梁布置，楼层周边的平面多处利用双层桁架向外悬挑延伸。采用MIDAS/Gen软件进行了多遇地震、设防地震、罕遇地震下结构的弹性楼板应力分析。鉴于大跨度钢结构和大悬挑结构对人行激励相对比较敏感,需要对竖向激励产生的楼板振动问题进行分析。首先考察结构的竖向振动模态，然后输入人行激励，求出楼板的共振频率及对应的峰值加速度，通过加速度数据对楼板舒适度进行评判。

［关键词］弹性楼板应力； 悬挑结构； 楼板舒适度； 人行激励； 加速度峰值

中图分类号： TU355    文献标识码： A    文章编号： 1002-848X(2015)S2-0341-06

Floor slab analysis of a multilayer hybrid structure

Xia Meimeng1， Zhang Liangping2， Shang Wenhong2

(1 Huasen Architecture & Engineering Design Consultants Ltd., Hangzhou Branch Company, Hangzhou 310012, China；

2 Huasen Architecture & Engineering Design Consultants Ltd., Shenzhen 518054, China)

Abstract: The analysis object is a multilayer hybrid structure which structural system is the frame-shear wall structure in Longgang district of Shenzhen city. Large span structures are used in the layout of steel beams and the plane around the floor extends outward by the double layer truss. Elastic stress analysis of structural floor under the frequently occurred earthquake and the medium earthquake and the rare earthquake were performed by MIDAS/Gen software. Due to the large span steel structure and large cantilever structure are relatively sensitive to human walking excitation, the floor vibration caused by vertical excitation was analyzed. First, the vertical vibrational mode of the structure was inspected. Then, the resonance frequency and peak acceleration of floor slab were calculated by entering the pedestrian excitation to evaluate the comfortableness of the slab.

Keywords: elastic slab stress; cantilever structure; comfortableness; human activity; peak acceleration

作者简介：夏美梦，硕士，工程师，Email:hexiameimeng@163.com。