未分类题

某水库流域兴建一项截污环保工程,建设方会同设计、施工单位对周围环境调查分析后,对排污隧道的建设提出三个备选方案。
A方案:竖井施工,直径5m,深度50m,山坡土体开挖坚石1730m3,预计工期4个月。
B方案:斜井施工,断面3.5m×4.4m,圆拱直墙断面,全长103m,预计工期2.5个月。
C方案:平洞施工,断面3.5m×4.4m,圆拱直墙断面,全长138m,预计工期3.5个月。
专家经功能分析后,分类整理出下料出渣通道(F1)、施工人员通道(F2)、隧道井棚(F3)、隧道施工面衬砌(F4)和通风供水供电(F5)五项功能,并得出这五项功能的重要程度比为F1: F2:F3:F4:F5=6:2:4:1:3。此后,专家对该三个方案的功能满足程度分别打分,其结果见表1-4。
经造价工程师估算,三个方案的工程总造价分别为A方案;220.07万元、B方案:209.47万元、C方案:266.09万元。
问题:
计算各功能的权重。
2.用价值指数法选择最佳方案(条件见表1-4)。

A.5m×4.4m,圆拱直墙断面,全长103m,预计工期2.5个月。
B.5m×4.4m,圆拱直墙断面,全长138m,预计工期3.5个月。
C.07万元、B方案:209.47万元、C方案:266.09万元。
D.用价值指数法选择最佳方案(条件见表1-4)。
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【参考答案】

由背景资料数据可知功能的重要程度比为F1:F2:F3:F4:F5=6:2:4:1:3按照环比评分法的评分计算标准经换算后......

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