KEY TECHNICAL POINTS OF HIGH PIER CONSTRUCTION AND ITS APPLICATION IN HIGHWAY BRIDGE CONSTRUCTION
At present,the construction methods of high pier construction mainly include sliding form,climbing form and tilting form.This paper focuses on the application of tilting form technology of high pier.Taking a highway bridge project as an example,the composition of the overturning mold system is determined,the three-dimensional finite element model of the overturning mold is constructed,the stress and deformation of key components are calculated,and the simulation results of the three-dimensional model are compared with the field monitoring data.The study shows that the maximum stress and deformation of the back corrugation are concentrated at the corner point,which should be strengthened.In the simulation results,the stress and deformation of each component of the die-turning system meet the requirements.Under different pouring height,the stress of the beam and the panel is different,the stress of each part of the beam is different,and the maximum stress is concentrated on the left side of the beam.Field monitoring results show that the control effect of pier profile is good.The construction technology of high pier is feasible in this expressway bridge project and has the value of popularization.
bridge engineeringhigh pier constructiondie turning technologyfinite element simulation
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NSTL
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