建筑工程混凝土结构构件的强度无损检测

Strength Non-destructive Testing of Concrete Structural Members in Building Engineering

文中采用无损检测(NDT)方法,检测因地震荷载引起的钢筋混凝土(RC)建筑物强度变化;利用振动台模拟了地震的输入,并应用在一个混凝土建筑试样上,以模拟试样受到地震前后的结构强度。探索直接和间接声波方法,以及超声断层扫描检测技术。振荡台测试前后,将上述无损检测方法应用于试样,通过波速和层间位移比等参数完成强度的无损检测。最后分析了检测方法的检测结果,并提出了一个面向混凝土建筑结构的无损检测方法,为相关检测提供了新的思路。

In this study,non-destructive testing(NDT)was used to detect the change in strength of reinforced concrete(RC)buildings due to seismic loads.The seismic input is simulated by a shaking table and applied to a concrete building sample to simulate the structural strength of the sample before and after the earthquake.Direct and indirect acoustic wave methods and ultrasonic tomography detection techniques are explored.Before and after the test,the nondestructive testing method is applied to the sample,and the nondestructive testing is completed by the parameters of wave velocity and interlayer displacement ratio.Finally,the results of the testing method are analyzed and a non-destructive testing method for concrete building structures is proposed,which provides a new testing idea for the relevant testing.