高架区间上跨济广高速桥施工方案模糊比选

Fuzzy Comparison of Construction Schemes for Elevated Section over Ji'nan-Guangzhou Highway Bridge

以济南轨道交通R1线高架段80m+130m+80m预应力混凝土连续桥上跨济广高速桥施工方案抉择问题为背景,简要介绍了工程概况、转体施工方案和悬臂浇筑方案的实施步骤及各自特点、模糊比选方法的计算步骤,对转体施工方案和悬臂浇筑方案的施工难度、安全风险等定性指标进行合理赋值,与已知的工程造价、施工工期、对济广高速影响时间等定量指标一并标准化处理,并对定性指标和定量指标分别进行对比,以确定相应指标的权重。

The construction scheme choice problem of 80 m ＋ 130 m ＋ 80 m prestressed concrete continuous bridge on Ji＇nan metro line R1 which is over Ji＇nan-Guangzhou highway bridge is taken as background,engineering situation is introduced in brief,as well as implementation steps along with characteristics of rotation construction method and cantilever pouring construction method, calculation steps of fuzzy comparison. Qualitative indexes such as construction difficulty and safety risk of rotation construction method and cantilever pouring construction method are given with reasonable assignment,which are standardized with known quantitative indexes such as engineering cost,construction period,influence time on Ji ＇nan-Guangzhou highway. The qualitative indexes and quantitative indexes are compared respectively,so as to confirm the weight of corresponding indexes.