基于关联度的预应力混凝土梁桥综合评估方法

考虑预应力混凝土梁桥的结构特点，建立了缺损预应力混凝土梁桥多层次评估模型，提出模型中各项评价指标并初步确定其分级标准；由于影响每个评价指标的因素很多，故构造正态关联函数计算确定无下属层元素评价指标与相应各评价等级的关联度，并在对模型中分项层及指标层元素进行评价时，考虑同下属于某元素的各元素的缺损状态进行权重修正计算；采用关联度及部件评定标度与全桥结构技术状态评分共同表征桥梁的缺损状态。

Comprehensive Evaluation Method on Prestressed Concrete Beam Bridges Based on Relational Degree Analysis

Considering the construction features of prestressed concrete beam bridge, particular attentions were paid on establishing a multi-level evaluation model for damaged prestressed concrete beam bridge, and presenting the evaluation indices and of which the rating standards are defined primarily in the model. There were numerous factors in influencing each evaluation index, so constructing a normal relational function to calculate the relational degree about the evaluation indices of each element, which had no sub-levd elements to each rating grade. When evaluating the elements in sub-item levd or index level of the model, the weights of elements that were pertained to one element were adopted, taking account of their deterioration degree, The damage conditions of bridge were characterized by relational degree, element evaluation scale and structural technology mark of bridge.