（1 中煤科工集团重庆设计研究院有限公司， 重庆 400016； 2 中国市政工程中南设计研究总院有

限公司四川分院， 成都 610031； 3 四川省建筑设计研究院， 成都 610000）

［摘要］以重庆市某小学体育馆大跨度预应力次梁楼盖为研究对象，通过施加多种人致荷载进行振动实测，研究该楼盖在人致荷载作用下振动响应规律，对比国内外基于加速度振级、结构基频、加速度的舒适度评价标准，选取适用于该类型楼盖的舒适度评价标准。实测初步证明，在梁底增设减振底板能有效提高该类型楼盖的舒适度。

［关键词］体育馆； 大跨度预应力次梁楼盖； 振动响应； 舒适度评价； 减振底板

中图分类号：TU378文献标识码：A文章编号：1002-848X(2017)15-0021-05

Field measurement on serviceability of large-span prestressed secondary-beam floor in primary school gymnasium

Xu Shitong1, Bo Junyao2, Jiang Wenjie3

(1 CCTEG Chongqing Engineering Co., Ltd., Chongqing 400016, China; 2 CSMDI Co., Ltd., Sichuan Branch, Chengdu 610031, China; 3 Sichuan Provincial Architectural Design and Research Institute, Chengdu 610000, China)

Abstract:The large-span prestressed secondary-beam floor in primary school gymnasium in Chongqing was taken as the research object. Vibration field measurement was conducted by applying various man-induced loads to study the  vibration response law of the floor under the action of the man-induced loads. By comparing the serviceability evaluation criteria based on acceleration vibration level, structural fundamental frequency and acceleration at home and abroad, the serviceability evaluation criteria applicable to this type of floor were selected. Field measurement preliminarily proves that adding a damping bottom plate at the bottom of the beam can effectively improve the serviceability of this type of floor.

Keywords:gymnasium; large span prestressed secondary-beam floor; vibration response; serviceability evaluation; damping bottom plate

作者简介：徐诗童，硕士，高级工程师，一级注册结构工程师，Email：xushitong@cqmsy.com。