应用研究 2024年 第53卷 第21期

DOI: 10. 7672 / sgjs2024210017

基于激光测振技术的既有建筑玻璃幕墙安全服役状态评估

赵鹏,梁金虎,石昊

作者简介:

赵鹏,高级工程师,E⁃mail:zhaopeng@ sribs. com

作者单位:

上海市建筑科学研究院有限公司上海市工程结构安全重点实验室,上海 200032

基金项目:

∗上海市优秀技术带头人项目( 21XD1434100);上海市科学技术委员会科研项目(22DZ1201703)

摘要:

以某既有建筑玻璃幕墙为研究对象,利用激光测振仪获取大量玻璃面板一阶自振频率,并以此为评价指标,结合理论分析和数值模拟结果,对该既有建筑玻璃幕墙安全服役状态进行分析评估。提出首先基于概率统计法进行动力特性异常对象筛查,然后对异常对象进行重点考察和安全服役状态确认的评估方法,并通过实际工程验证了激光测振技术评估玻璃幕墙安全服役状态的可靠性和可操作性,体现了激光测振技术非接触和可远程测试等优势。

English:

Taking an existing building glass curtain walls as the research subject, a large number of first⁃order natural frequencies of glass panels are obtained using a laser vibrometer,which serves as anevaluation index. Combined with theoretical analysis and numerical simulation results, the safety andserviceability status of the existing building glass curtain walls are analyzed and assessed. This paperproposes an evaluation plan that initially screens for abnormal dynamic characteristics of glass panelsbased on statistical probability methods, and then conducts a focused examination and confirmation of theserviceability status for the abnormal objects. The reliability and operability of laser vibrometry technologyhave been verified through the actual engineering projects, demonstrating the advantages of non⁃contactand remote measurement capabilities of laser vibrometry technology.