简谐荷载作用下井字梁楼盖动力特性试验研究
Experimental study on dynamic characteristics of grillage beam floor under harmonic load
姚宗健 1李根森 2张林 2张宇轩 2王家振2
作者信息
- 1. 山东建筑大学土木工程学院,山东 济南 250101;山东建筑大学 建筑结构加固改造与地下空间工程教育部重点实验室,山东 济南 250101
- 2. 山东建筑大学土木工程学院,山东 济南 250101
- 折叠
摘要
以某工业厂房井字梁楼盖在大型动力设备运行时存在的异常振动问题为例,提出了增加井字梁高度、增大楼板厚度 2 种减振加固方案,通过缩尺模型试验研究了简谐荷载作用下不同加固方案对井字梁楼盖结构的减振效果,并通过有限元分析软件ABAQUS的数值模拟对缩尺模型试验结果进行了验证.结果表明,2 种加固方案均能降低楼盖结构的竖向振动,其中增加井字梁高度比增大楼板厚度的减振效果更加显著.
Abstract
Taking the abnormal vibration problem of the grillage beam floor of a certain industrial workshop in the operation of large power equipment as an example,two kinds of vibration reduction and reinforcement schemes of increasing the height of the grillage beam and increasing the thickness of the floor were proposed.Through the scale model test,the vibration reduction effects of different reinforcement schemes of the grillage beam floor structure under the action of harmonic load were studied.The results of scale model test were verified by numerical simulation of finite element software ABAQUS.The results show that both reinforcement schemes can reduce the vertical vibration of the floor structure,and the effect of increasing the height of the grillage beam is more significant than that of increasing the thickness of the floor.
关键词
简谐荷载/井字梁楼盖/缩尺模型试验/减振加固Key words
harmonic load/grillage beam floor/scale model test/vibration reduction and reinforcement引用本文复制引用
基金项目
山东建筑大学工程鉴定加固研究院有限公司科研项目(2020-KY008)
出版年
2024
NETL
NSTL
维普
万方数据