In the aspect of resistance degradation, based on the studies of concrete durability by the predecessors, one resisting force model is established,and the calculation formula of the resistance parameters are deduced.
针对抗力衰减的问题,本文在前人对混凝土结构耐久性研究的基础上,建立了钢筋混凝土梁桥的抗力衰减模型,并推导了抗力参数的计算公式。
参考来源 - 既有钢筋混凝土公路桥梁的动态可靠度分析The deterioration of resistance and changes of the maximum load during different purpose reference periods must be considered in calculating time-varying reliability.
动态可靠度的计算要考虑结构构件抗力衰减及不同目标基准期最大荷载变量的变化。
参考来源 - 型钢混凝土结构构件正常使用极限状态模糊动态可靠度的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
但是由于外界环境等因素的影响，桥梁结构不可避免地出现损伤积累和抗力衰减。
Inevitably, the bridge structure was damaged and its resistance was attenuated duo to the destroy effect of environment.
分析了腐蚀环境对结构抗力的影响、抗力衰减模型、地震危险性、地震对结构的作用。
Influence of corrosive environment on structural resistance, resistance decrease model, seismic risk and seismic effect on structures are analyzed.
在抗力衰减模型及桥梁荷载模型的基础上，推导出了损伤状态下桥梁结构承载力极限状态方程。
Derives limit condition equation of bridge loading capacity under damnification status on the basis of resisting force model and loading model.
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