上海某地铁盾构区间经济指标分析
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摘要
上海绝大部分都是软土地基,考虑到地面建筑、设施密集,地下管线众多,环境保护要求高等因素,比较经济合理的办法是采用盾构法施工。地铁建设项目做为国有投资的建设项目,其初步设计批复概算是整个项目的投资上限。虽然概算技术经济指标是限额设计和投资控制的终极目标,但是在施工招标阶段的投标价格却是项目实际成本的基础。基于上海市某地铁全线盾构区间概算及投标文件的数据,选取区间纯盾构掘进指标(不含管片、进出洞加固和联络通道)和区间隧道指标(不含管片,含进出洞加固和联络通道)为分析对象,通过对初步设计、投标两个不同时期技术经济指标的整理、分析和对比,明确不同阶段区间技术经济指标的差异,提高盾构区间投资控制目标实现的可控性和预见性,同时也为今后盾构区间土建工程概算编制提供参考。
To avoid the light soil, density of building and underground pipelines, imperative requirement of environmental conservation and other disadvantage in Shanghai, the most reasonable and economical technologies for construction is using the shield machine.As a type of state-owned investment construction project, the preliminary approved budgetary estimate is the upper investment limit of a whole metro construction project. And the bid is based on the project outlay cost during the construction bidding phase,though the primary purpose of quota design and investment control has become the technical and economic indicators of budget estimate.In summary,based on Shanghai Metro Project tunnel primary budget and bidding price documents, select net tunneling economic indicator(precast concrete segment、soil reinforcement and cross passage excluded) and all tunneling economic indicator(including soil reinforcement and cross passage, precast concrete segment excluded) as the analytical object by concluding and comparing the indicators of the upper two project developing stages in order to illustrate their differences and enhance the tunnel cost controlling ability and predictability.
To avoid the light soil, density of building and underground pipelines, imperative requirement of environmental conservation and other disadvantage in Shanghai, the most reasonable and economical technologies for construction is using the shield machine.As a type of state-owned investment construction project, the preliminary approved budgetary estimate is the upper investment limit of a whole metro construction project. And the bid is based on the project outlay cost during the construction bidding phase,though the primary purpose of quota design and investment control has become the technical and economic indicators of budget estimate.In summary,based on Shanghai Metro Project tunnel primary budget and bidding price documents, select net tunneling economic indicator(precast concrete segment、soil reinforcement and cross passage excluded) and all tunneling economic indicator(including soil reinforcement and cross passage, precast concrete segment excluded) as the analytical object by concluding and comparing the indicators of the upper two project developing stages in order to illustrate their differences and enhance the tunnel cost controlling ability and predictability.
引文
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[4]上海市市政工程定额管理站.上海市轨道交通工程预算定额[S].上海:同济大学出版社,2006.
[5]朱自强.城市轨道交通建设项目管理指南[M].北京:中国建筑工业出版社,2010.
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[8]谢国龙.地铁盾构区间工程造价分析[J].铁路工程造价管理,2011(5):27-29.
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