High-strain Dynamic Testing Is The Testing Of Prestressed Pipe Pile

Along with the rapid development of the economic construction of human society, the urbanization is speeded up and the urban population rises sharply. Hence more and more high-rises and ultrahigh-rise buildings emerge and all kinds of deep foundations (pile foundation in particular) have been widely used in the engineering construction, but obviously, the concrete steel pipe driven in as piling, possessing distinct advantages of lower price , fast construction speed, guaranteed construction quality and wide application, is widely used .Because of the high concealment in piling construction and many factors related with pile foundation quality, many uncertainty factors possibly affect the piling construction. Therefore, to improve the quality management during the piling construction and strength the quality examination after the construction makes a big difference to the quality and security of the whole project. In view of the pile foundation examination practice at home and abroad, it is hard to make an effective quality examination and assessment if we only adopt the traditional static load exploration in terms of human and material resources. Instead, we must take the dynamic measuring method as a supplementary means, which is theoretically and practically mature. However, in terms of the dynamic measuring method, greater demand will be set on the tester's experience and theoretical level. In other words, it requires testers to gain much more experience and raise their theoretical level.Based on the mechanism of bearing capacity transfer between piles and ground, fundamental assumption of high strain, the rationale and static and dynamic. contrast experiments for the pile foundation in the engineering practice, This article discusses the feasibility of high strain test and sums up some key skills in actual wave fitting through a certain amount of materials from static and dynamic. contrast experiments. Besides, based on the geology and the foundation pile situation, it arrives at some conclusions, for example, PHC pile load bearing character in Zhengzhou, the supporting capacity computation as well as the ground parameter value, are of great applicable value in the engineering practice, formula has carried on the essential revision to PHC the pile limit supporting capacity Qu-...