Characteristics Of The Reflected Wave Method Fence Column Detection

At present, high-grade highway construction in the quality of the recurrence of the problem caused concern, especially with regard to traffic safety barrier of the last line of defense, because of the production, construction of jerry-building behavior, so that the new highway built there are all kinds of quality questions, give a serious threat to traffic safety. Construction supervision and quality inspection agency units because of the lack of testing means necessary, the use of apparatus and methods of detection can only be galvanized on the barrier thickness, vertical column and linear barrier such as supervision and inspection, internal quality of column length and depth and so can not conduct on-site non-destructive testing. In view of the reasons for the cost of the construction process and construction can only be conducted after the completion of random testing, post on the barrier is taken out of the pile test methods, sampling probability is too low.This article first Pile dynamic testing and the development of reflection wave method, the status quo and its theoretical analysis with the basic introduction, the introduction of Pile dynamic testing technology and its advantages and disadvantages of the status quo, as well as some common pile type prone to the quality of problems. And the light of reflected wave method of foundation pile testing, use of Matlab / Simulink computer simulation of the reflected wave method Detected column barrier simulation, the waveform of the corresponding map, and analyzed to explore the exciting force when the pulse width , to load the corresponding changes in the form of the reflected wave changes characteristic curve, and the impact of time-domain waveform analysis, the corresponding sum up the characteristics of a variety of defects detected reflected wave interpretation skills to determine deficiencies in providing the type of method to determine the location of defects .