Abstract
In order to meet the requirements of high-speed train's safe operation, the horizontal displacement of high-speed railway bridge pier top must be strictly controlled. This paper relies on one road construction engineering beneath an existing high-speed railway bridge. We use 2D finite element software to analyze the magnitude and direction of pier top horizontal displacement caused by road load. We take it into account that the effect of the soil nature on pier top horizontal displacement. The analysis showed that the nature of soil around piles of high-speed railway bridge is closely related to the magnitude and direction of the pier top horizontal displacement. Authors believe that the horizontal displacement of pier top consists of two parts. One is pier top pure horizontal displacement dragged by horizontal displacement of the top of piles, the other is pier top rotation horizontal displacement driven by the rotation of pile cap. The analysis result can be used for the design of road with embankment structure beneath high-speed railway bridge.
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