Study On The Static And Dynamic Characteristics Of The High-level Pile Continuous Rigid Frame Bridge Around Offshore Deep Water

Due to the impact of water's depth and pile's length, high-level pile continuous rigid frame bridge offshore deep water, whose the performance of static and dynamic power will be different, compared with rigid frame bridge with low-pile caps and foundation most buried in the soil. This thesis takes Nanmen Bridge of Xiangshan Sanmenkou Over Sea Bridge as engineering background, establishes the static and dynamic simulation model of the bridge, and studies the static and dynamic problems of deep-water and high-level pile continuous rigid frame bridge. The main research contents of this paper include:(1) Combined with the simulation analysis model of Nanmen Bridge, inherent laws between main beam deflection and internal forces status in the construction process has been analysised.The stress and deformation in the operational stage of the bridge under the combination effect of dead load, live load, temperature load and other load as well as various loads have been calculated.Meanwhile,the influence effect of concrete shrinkage and creep of pile foundation to displaement and internal force of the structure have been discussed.(2) Having an analysis on the resisting wind of the consruction phase of the typical working condition through adopting the gust load for the Nanmen Bridge, then exploring the impact of the length blast of wind load loading way , pole base the length and bundle of basket weight over structure stability ,and drawing some useful conclusions(3) This thesis establish a complete dynamic calculation of the bridge model, contrast and research the pile - soil function and the impact of hydrostatic pressure on the dynamic characteristics of Nanmen Bridge which in the largest cantilever bridge stage and the bridge finishing stage according to calculation results,which provides a reference to wind resistance and seismic resistance analysis.(4) According to seismic intensity region that Nanmen Bridge located in, adopt horizontal seismic combination, make an earthquake response spectrum analysis to Nanmen Bridge, compare and analyze The key section of the bridge structure of the internal force and displacement responses draw some preliminary conclusions, which can provide a reference to the seismic design of such continuous rigid frame bridge...