Pile-Soil Interaction Analysis Of An Ning He Bridge Of Jinping Water Power Station Spacial Highway

This paper aims at the pile-soil interaction problem on which the pile of the bridge in the high-intensity area. The engineering background is An Ning He Bridge, which belong to the special outward road of Jing Ping lst-2nd class water power station. On this background, the 3-D finite element model of An Ning He Bridge's No.2 pier is established. The acceleration time history was inputted from the rock. The mostly contents are the dynamics time history analysis on the pile foundation and the soil around the pile, and the research to pile-soil interaction under the earthquake breaking, the research to the ground motion and upper constructions' effect to the pile-soil interaction system was included. In addition, established a planar pile- pier - beam model, proceed the mechanics analyzes;the result will be contrasted to the result of ANSYS. Moreover, this paper has the calculation analyze on the liquefied to proceed to the vibration of the foundation soil on engineering area. Getting some applied worth result. This text is mainly draw these conclusions:(1) Proceeded the calculation on the settlement of single pile, and analysed the influence that pile's length (L), pile's diameter (D), flexibility modulus (E), soil inner-friction anger (φ) and mucosity force (c) to the settlement. The settlement will increase when they increasing, but when they reach to certain value the influrence become uncertain.(2) There appered an uneven setlement in the foundation of An Ning He Bridge's No.2 pier with the load of trailer-300, because of the difference rigidity. The largest setlement is 8.124 cm, and the largest press is 1.925MPa.(3) The largest horizontal displacement and acceleration in the pile-soil interaction system appears on the top of pile when the earthquake breaking. Passing by the analysis to their timing history curve of respond to the earthquake, there is an enlarging function to earthquake wave, because the transmission coefficient smaller than 1, the stratum's construction satisfying the condition that producing earthquake wave enlarging. There will appear minus friction on thepile-soil contact facies in the gravel, and there will appear plus friction on the pile-soil contact facies in the rock.(4) Passing to the analysis on pile- pillar- beam system, how the force distributes in the whole system is comprehended. It can provides the some usefully referrences for the design.