基于超声检测法的膨胀螺栓紧固程度判别方法  

A Judgment Method for Tightening Degree of Expansion Bolts Based on Ultrasonic Testing Method

作　　者：高崇亮 程超 王波 曹亚军 高勇勇 GAO Chongliang;CHENG Chao;WANG Bo;CAO Yajun;GAO Yongyong(China Construction Shenzhen Decoration Co.,Ltd.,Shenzhen,Guangdong 518023,China)

机构地区：[1]中建深圳装饰有限公司,广东深圳518023

出　　处：《建筑施工》2021年第11期2401-2403,2414,共4页Building Construction

基　　金：中建股份科技研发计划项目课题(CSCEC-2020-Z-38)。

摘　　要：基于超声检测法,对玻璃幕墙结构中的膨胀螺栓紧固程度进行风险分析。通过超声波测量膨胀螺栓的轴向应力,对不同轴向应力的膨胀螺栓反射回来的超声波信号进行检测,轴向应力的大小通过拧紧螺母圈数/拉拔仪进行拉拔来模拟实现,同时只需测量膨胀螺栓长度变化值,便可以通过得到的模型进行拉拔力预测,就能够无损分析膨胀螺栓的紧固程度,从而预测玻璃幕墙的实际脱落风险。Based on ultrasonic testing method,the risk analysis of the tightening degree of expansion bolts in glass curtain wall structure is carried out.The axial stress of the expansion bolt is measured by ultrasonic,and the ultrasonic signal reflected by the expansion bolt with different axial stress is detected.The magnitude of the axial stress is simulated by tightening the nut turns/drawing with the drawing instrument.At the same time,the drawing force can be predicted through the obtained model by measuring the varying values of the length of the expansion bolt.The fastening degree of expansion bolts can be analyzed nondestructively,which can predict the actual falling off risk of glass curtain wall.

关 键 词：超声检测法 膨胀螺栓 紧固程度 判别方法 

分 类 号：TU755[建筑科学—建筑技术科学]