城市轨道交通冻结法联络通道初步设计阶段的造价分析

Cost Analysis of Urban Rail Transit Freezing Method Link Passages at Preliminary Design Stage

目的:结合《上海市轨道交通工程预算定额(SHA3-31—2016)》,套用每月信息价后发现,冻结法联络通道造价存在指标过高的问题,严重偏离市场价,特分析实际工程量及定额子目消耗量等基础数据,并提出修改意见。方法:从工程量及定额组成入手,对现有联络通道通用图的工程量测算,分类固定量及变化量,寻找变化量的函数关系。结合实际招标控制价,对冻结法联络通道造价的组成进行分析研究,得出联络通道基础造价,通过联络通道长度及是否带泵房进行组价,最终确定联络通道合理的造价。结果及结论:通过对联络通道工程量及定额组价的分析,调整部分定额子目中的工料机消耗量,使联络通道的工程造价处于合理水平,为初步设计阶段造价的控制提供参考。

Objective:Based on the′Budget Quota for Rail Transit Engineering in Shanghai(SHA3-31-2016)′and the corresponding monthly information price,it is discovered that the cost estimation for link passage using freezing method is excessively high and significantly deviates from market price.Fundamental data including the actual engineering quantity and consumption of sub-items in the quota are specifically analyzed,and modification suggestions are given.Method:Starting from the composition of engineering quantity and quota,the engineering quantity for existing link passage generic diagrams is checked and calculated,classifying fixed quantity and varying quantity,and identifying the functional relationship of the varying quantities.Considering the actual bidding control price,the cost composition of freezing method link passage is analyzed and studied,the fundamental cost is determined.The link passage length with or without pump rooms are considered in the cost composition,finally leading to a reasonable estimation of link passage cost.Result&Conclusion:By analyzing the engineering quantity and cost quota composition of link passage,adjustment is made to the consumption of materials,labor,and machinery in sub-items of partial quota,which ensures that the link passage engineering cost is maintained at a reasonable level,providing reference for cost control at the preliminary design stage.