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控规单元尺度城市更新中建筑碳排预计算研究 ——以武汉滨江商务区七期地块为例
白淑军1,2, 运迎霞3, 宋 彦4, 李超骕5
1.( 通讯作者):天津大学建筑学院,博士研 究生;2.河北工业大学建筑与艺术设计学 院,副教授,baisjun@126.com;3.天津大学建筑学院,教授,博士生导师;4.美国北卡罗莱纳大学教堂山分校城市与区 域规划系,终身正教授;5.香港科技大学(广州)城市治理与设计学 域,助理教授,博士生导师
摘要:
我国已处于城镇化的后半程,加上“30 目标+60愿景”国际承诺的做出,标志着存量更 新和低碳规划将成为我国城市开发建设和转型 发展的基本语境。建筑碳排是城市中的重要碳 排放源,亦是影响城市更新的主要碳排因素和 计算因子,针对当前我国城市更新中建筑碳排计 算研究的缺失,以控规单元尺度为研究范围, 以建筑碳排预计算为研究对象,综合运用多种 定量研究方法与工具平台及图式化语言进行研 究分析。在能耗模拟框架下,对三种常用建筑碳排预计算方法进行比选,选取“根据规划用地类型与强度推算建筑能耗”的碳排计算方法。以武 汉滨江商务区七期地块为实证地块,根据城市更新规划设计方案,对城市更新后建筑碳排进行预 计算及结果分析;并对现状地块的建筑碳排进行计算,对比分析地块更新前后建筑能耗的减排 效应并进行原因探析,得出经过低碳城市更新后的建筑碳排降幅可达到约88%,主要原因在于高 能耗建筑类型的减少及用地功能与性质的改变。在实证研究的基础上,从三个方面提出控规单 元尺度城市更新的低碳规划策略与技术路径,最后对研究的科学价值和现实意义进行讨论,并 提出未来研究应继续努力与完善的方向。
关键词:  建筑碳排预计算  城市更新  实证计算分析与低碳规划策略  控规单元尺度  武汉滨江商 务区七期地块
DOI:10.13791/j.cnki.hsfwest.20240215
分类号:
基金项目:武汉市土地利用和城市空间规划研究中心技术开发 资助项目(2021-G18);国家自然科学基金资助项目 (51508378)
Study on pre-calculation of building carbon emission based on the unit scale of regulatorydetailed plan in urban renewal: An example of Wuhan Binjiang Business District VII
BAI Shujun,YUN Yingxia,SONG Yan,LI Chaoxiao
Abstract:
As China entering the second half of urbanization, the international commitment of “30 targets + 60 visions” indicates that urban renewal and low-carbon planning are the basic background of China’s urban construction and development, which means that urban construction and development can only be achieved by stock renewal and low-carbon planning. And urban lowcarbon transformational development is the key to stock renewal and achievement of “30 targets + 60 visions”. Since 2016, research on carbon emission has developed rapidly both domestically and internationally, but the research spatial scope mainly focuses on administrative units as the main research space in order to get research data and information conveniently. There is almost no research on the pre-calculation of building carbon emission of stock urban renewal plot at the scale of regulatory detailed plan. Reviewing existing research, most of it has focused on the impact mechanism of carbon emission, the constraint mechanism of carbon emission, and the methods, strategies, planning ideas for low-carbon emission reduction. And most existing studies have used both qualitative and quantitative research methods, it is undeniable that there is no relevant research on the pre-calculation of building carbon emission for urban renewal planning and design schemes at the scale of regulatory units. Response to the lack of research on building carbon emission calculation in urban renewal at the scale of regulatory unit in China, this study focuses on the scale of regulatory unit as the research scope and the pre-calculation of building carbon emission as the main research object. Multiple quantitative research methods, tool platforms, and graphical languages are comprehensively used for research and analysis, Energy Plus is the popular and commonly used energy consumption simulation calculation platform and software. Under the framework of energy consumption simulation, three commonly used building carbon emission pre-calculation methods are compared, finally the carbon emission calculation method of “calculating building energy consumption based on planned land type and intensity” is selected. Selected empirical plot, which is to be renewed and is of the scale of regulatory detailed plan,for empirical calculation and analysis of building carbon emission. The empirical plot lies in Wuhan Binjiang Business District VII, it is of 344 hm2 and now in a pending update state, having a comprehensive urban renewal planning and design scheme. Then carry out pre-calculation of building carbon emission after renewal and result analysis according to the urban renewal planning and design scheme; meanwhile calculate the building current carbon emission before renewal. And comes up with the comparison of building carbon emission before and after renewal, the comparison displays that the reduction effect of building carbon emission after low-carbon urban renewal is very significant and can reach about 88%, mainly due to the reduction of high-energy consuming building types and changes in land use functions and properties. It is fully demonstrating that low-carbon urban renewal and planning design can effectively reduce building carbon emission. On the basis of the empirical calculation and analysis, the planning strategies and technical paths of low-carbon urban renewal are carried out from three aspects. The first one is the fully implant low-carbon planning and design concepts throughout the entire process of urban renewal. The second point is to pay attention to the impact of the perspective of large-scale area on the carbon emission of renewal land unit or parcels. It needs to be clarified that the large-scale perspective refers to the spatial scale category in which the pending update land unit is located in, and the former has an area approximately 10 times size than the pending update land unit, and the two are functionally related. The property of large-scale area has significant impact on carbon emission for renewal unit. The third point is to establish design path guidelines for responding to low-carbon urban renewal planning at all levels of the national spatial planning system, and implementing the optimization path of urban form based on plot ratio, land use compactness, and spatial dimensionality. Finally, based on the discussion of the scientific value and practical significance of the study, several research points worth discussing are conducted thorough discussions, and directions for future research are proposed. Based on the selected calculation method for building energy consumption and carbon emission, the pre-calculation of building carbon emission for urban renewal planning and design scheme of empirical plot at the unit scale of regulatory detailed plan can provide effective guidance and inspiration for the optimization and improvement of urban renewal planning and design schemes, and can also be promoted and applied to low-carbon urban renewal in other spatial categories.
Key words:  pre-calculation of building carbon emission  urban renewal  empirical calculation analysis and low-carbon planning strategy study  unit scale of regulatory detailed plan  Wuhan Binjiang Business District VII