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以乌干达一座按欧洲规范设计的连续梁桥为例,按欧洲桥梁抗震规范的延性设计方法对其进行了计算。计算过程表明,欧洲规范采用两水准设防、一阶段设计的抗震设计思想,采用延性变形折减后的地震响应内力对设计截面进行强度验算,实现强度和变形的双重指标控制,与我国现行桥梁抗震设计规范在设防思路、设防目标、设防水平和设计流程等方面存在差异。计算思路和计算过程可为使用欧洲规范进行桥梁抗震设计的工程人员提供参考和借鉴。
Taking a continuous beam bridge designed in accordance with European norms as an example in Uganda, it is calculated according to the ductility design method of the European Bridge Seismic Code. The calculation shows that the European standard adopts the seismic design principle of two-level fortification and first-stage design, and uses the seismic response internal force after the ductility deformation to reduce the strength of the designed section to check the strength of the designed section, and realizes the double index control of the deformation and deformation, Design specifications in fortification ideas, fortification goals, fortification levels and design processes and other differences. The calculation ideas and calculation process can provide reference and reference for engineering personnel who use the European Code for seismic design of bridges.