A proposal for evaluation method of system redundancy and system factors in load rating of steel bridges
A proposal for evaluation method of system redundancy and system factors in load rating of steel bridges
复制标题
钢桥额定荷载系统冗余度和系统因素评价方法的提出
DOI：
10.11532/structcivil.68a.1
复制
发表时间：
2022
期刊：
影响因子：
--
通讯作者：
佐久間 智
中科院分区：
文献类型：
--
作者：
奥井 義昭;傳田 諒;熊木 和輝;佐久間 智
通过比较桥梁系统和单梁的承载能力，研究了桥梁的系统冗余度。建立了既有组合简支工梁桥和非组合连续工梁桥的非线性三维有限元模型，研究了桥梁类型对系统冗余度的影响。提出了一种简单的方法来量化系统的冗余作为一个系统因素的额定负荷。建议的系统系数有利于会计系统冗余评估现有桥梁的承载能力，使用传统的线弹性结构分析。
System redundancy of bridges is studied by comparing load-carrying capacities between a bridge system and individual girders. Nonlinear 3D FE models of existing composite simple I-girder bridges and a non-composite continuous I-girder bridge, which were designed according to a previous design code, were developed to investigate the effect of bridge types on the system redundancy. A simple method is proposed to quantify system redundancy as a system factor for load rating. The proposed system factor facilitates accounting for the system redundancy into evaluating load-carrying capacity for existing bridges by using conventional linear elastic structural analyses.