Application Of Ultrasonic Transmission Method Detection In Pile Integrity Detection

Pile foundation is one of the effective methods of soft ground,reduce building sedimentation.With the rapid development of our country construction enterprise,pile foundation is widely used.But as a result of pile foundation is hidden underground engineering,the construction technology,geological conditions,construction materials,and many other factors,any link error,are likely to affect the quality of pile body,thereby directly affect the safety of upper structure.The pile quality detection method has a lot of,among them,the ultrasonic detection of concrete strength and defects,in does not affect the structure or component or other mechanical function under the premise of directly testing and presumption of concrete strength evaluation of concrete or defect,because the concrete nondestructive testing technology has direct,fast,flexible,and repetition,reliable,economic and other advantages,has become a sui generis detection technology in construction engineering is becoming more and more widely used.This article first expounds the domestic and foreign about the history and progress of ultrasonic pile quality test,as well as the common defects of bored piles,secondly,through the introduction of the basic principle of ultrasonic wave,combined with specific engineering example,a detailed analysis of acoustic parameters and the quality of concrete.The final quality of the grey theory is introduced into the ultrasonic judgement,the quality of ultrasonic detection of various acoustic parameters using grey clustering evaluation method,and adopts the case analysis and validation.Grey clustering judgment results consistent with the traditional method to judge the results,proves that the accuracy of the synthetic discriminant method;For the use of traditional method of judgment is not accurate or even impossible to judge phenomenon,grey clustering comprehensive discriminant method can reach certain discriminant effect,shows its superiority.