在用钢筋混凝土梁式桥的安全性评估

Safety-based evaluation of existing reinforced concrete girder bridges

针对桥梁结构体系的受力特点 ,按照其传力路径将其划分为上部结构、传力结构和下部结构 ,并给出构成各部分的基本受力构件 ,建立起多层次综合评估模型 ;在构件的承载能力降低率可求的前提下 ,依据层次分析法原理 ,将其合成为结构体系的评估指标 。

In allusion to the bearing characteristic of bridge system,a bridge is divided into three parts: superstructure, structure transmitted load, substructure according to its transmit path, and essence bearing components composed each part is given. Multi-layer integrative evalative model is established based the layer analytical-method.If the bearing capacity reduction rate can be solved,then they are synthesized the evaluating index of structure system, and the applied method used to evaluate bridge system is built.