摘要
在实际工程检测中,边界条件对于检测结果有较大影响.建立了现浇剪力墙的模型,结合冲击回波法和数值模拟对该情况进行理论分析,探讨固定边界条件下不同敲击距离对现浇剪力墙检测的影响,将实测结果与数值模拟结果进行对比分析.结果表明:卓越频率会在距离固定边界一定范围发生偏移现象,会对实际工程检测结果造成错误判断.可为冲击回波法在结构检测中的应用提供技术参考.
In actual engineering inspection,boundary conditions have a greater impact on the test results.To this end,the model of cast-in-place shear wall is established.Combined with the knowledge and numerical simulation of impact-echo method,the situation is analyzed theoretically.The influence of different tapping distance on the detection of cast-in-place shear wall under fixed boundary conditions is discussed.The measured results are compared with the numerical simulation ones.The results show that the excellent frequency offset phenomenon occurs in a certain range from the fixed boundary,which makes the wrong judgment of the actual engineering test results,and provides a technical reference for the application of the impact-echo method in structural detection.
作者
侍晶晶
毕利锋
SHI Jing-jing;BI Li-feng(College of Civil Engineering,Anhui Jianzhu University,Hefei 230601,China;Fourth Engineering Co.,Ltd.,CCCCSHEC,Wuhu Anhui 241000,China)
出处
《兰州工业学院学报》
2019年第5期15-18,共4页
Journal of Lanzhou Institute of Technology
