本文运用有限元软件ANSYS分析。本文根据小半径匝道弯桥的受力待性,对连续单点支承的小半径匝道弯桥,采用三维实体单元(SOLID65),运用实体力筋法,而不采用传统的梁单元,空间计算分析更加精确,对小半径匝道弯桥的支座预偏心设置进行了分析。分析了独柱预偏心对小半径匝道弯桥支座竖向反力及梁体位移的影响,独柱预偏心对梁体自重产生的扭矩的影响,独柱预偏心对预应力产生的扭矩的影响,分析了不同的独柱预偏心设置对小半径匝道弯桥梁体内力的影响。 This article uses finite element software ANSYS analysis. In this paper, according to the force waiting of the small radius ramp curved bridge, the three-dimensional solid unit (SOLID65) is adopted for the small radius ramp bends with continuous single-point support. The physical reinforcement method is adopted instead of the traditional beam unit. To be more precise, the pre-eccentricity setting of the bends of a small radius ramp is analyzed. The influence of single column pre-eccentricity on the vertical reaction force and the beam displacement of a small radius ramp bearer support was analyzed. The influence of the pre-eccentric column on the torque generated by the beam self-weight and the pre-eccentric pre-eccentricity on the torque generated by the prestress The influence of different pre-eccentric pre-eccentricity settings on the internal force of a small radius ramp bridge is analyzed.