Studies On Theory Of Vertical And Lateral Vibration Of Sea-crossing Bridge Pile Considering Pile And Soil Interaction During Construction

With the Marine economic development experimental Zone carry out in ZhejiangProvince and Zhoushan islands new district became the fourth national district,marine economic construction is on the way. Marine economic development,infrastructure construction first. Deep water port, coastal tidal power station, offshorewind farm, the cross sea bridge and marine oil platform and other large engineeringconstruction which are implemented use a lot of infrastructure in the form of pilescolumn structure. For complicated marine environment, on the one hand, pilefoundation to deal with complex soil, on the other hand, to withstand wind, waveimpact force, current force and a series of complex dynamic load in the constructionprocess. Because of the different construction technology and construction methods, itoften appears defects such as fracture, necking. Even for cross-sea bridges which usesteel pipe pile commonly in pile driving process, it may also cause misalignment andeven broken pile because of the hammer eccentric or other reasons due to currents.These will affect the integrity of the pile, thereby affecting the pile bearing capacity,the upper structure can be made the uneven settlement, even collapse, the safety andstability problems of structure and foundation is particularly prominent.Based on these, on the one hand, we study the theory of vertical vibration of piledeeply, allow the existence of relative small slip between pile and soil, find thesolution of high pile vibration analytical solution in frequency domain, provides a newtheoretical support for cross-sea bridge vibration characteristics of deep water highpile and detection technology and a series of problems. On the one hand, this paperalso studies on theory of lateral vortex-induced vibration of pile deeply, use finiteelement software for simple simulation at the same time, these provide thefundamental basis and theoretical guidance for the time for the construction, siteselection and design of the pile.In this paper, the research in theory is more rigorous, it makes the theory of pilevibration more in line with the actual application situation, promotes the developmentof the pile foundation engineering construction technology. It also has importantacademic value and engineering significance.