CN109508870A - 一种海绵城市径流控制指标调整因子的赋值计算方法 - Google Patents
一种海绵城市径流控制指标调整因子的赋值计算方法 Download PDFInfo
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Abstract
本发明提供一种海绵城市径流控制指标调整因子的赋值计算方法,旨在克服现有技术中无法针对具体规划地块的城市规划控制指标特征,以精确获得符合该地块开发特征的规划阶段海绵城市径流控制指标的缺陷。本发明通过开发建设相关的单因子评价、多因子叠加分析,根据相加权重等确定控制性详细规划阶段的各地块径流控制特征调整因子,可以清楚直观的体现出控规层面城市地块海绵建设的潜力差异性,并大幅提高规划工作效率,增强海绵城市规划的指导性和科学性。
Description
技术领域
本发明为属于城市规划中海绵城市规划方法领域,具体为一种控制性详细规划阶段的海绵城市径流控制指标调整因子的赋值计算方法。
背景技术
我国自近年推广海绵城市建设技术以来,突出城市规划的引领作用,各地需要编制总体规划阶段的海绵专项规划、控制性详细规划阶段的海绵城市建设规划,通过规划管控手段,在城市开发建设过程中落实海绵城市相关技术要求。其中,控制性详细规划阶段的海绵城市建设规划的编制工作中,关于具体地块的径流控制指标的计算和确定方法,是整个规划编制工作中的重点。
现有技术是通过设定调整因子对径流控制指标进行调整区分,该调整因子的确定方法较为粗放(在推荐取值范围内依据经验人为取值,为模糊估算方式),存在针对性差、科学性不足、效率低等问题。
发明内容
本发明旨在发明一种海绵城市径流控制指标调整因子的赋值计算方法,用于控制性详细规划阶段的海绵城市规划编制工作,其针对性好,效率高。
为了实现上述目的,本发明的技术方案如下:一种海绵城市径流控制指标调整因子的赋值计算方法,其特征在于所述方法包括
选取地块海绵建设影响因子;
根据对径流控制的影响度对因子进行赋值打分,确定刚性因子和弹性因子;
对单因子指标进行归一法处理,得出各因子权重赋值;
采用适宜性指数法分析、评定每个单因子的权重赋值,在得到的各因子相对权重进行加权分析后,最终得到具有针对性的CSI得分;
得出各地块海绵指标特征调整因子。
进一步地,所述地块海绵建设影响因子包括:来自于现状用地摸查及资料的影响因子,包括:降水规律、用地性质、开发强度、地块上下垫面情况、土地污染情况、内涝风险分析;来自于国家地方海绵城市建设导则及要求的影响因子,包括:年径流总量控制目标、年径流污染控制目标、排水防涝标准、雨水资源利用率;以及来自于相关规定要求的影响因子,包括:用地性质、地块面积、容积率、建筑密度、建筑限高、是否经营性设施、公共设施配套要求、新改建或保留。
本发明通过开发建设相关的单因子评价、多因子叠加分析,根据相加权重等确定控制性详细规划阶段的各地块径流控制特征调整因子,可以清楚直观的体现出控规层面城市地块海绵建设的潜力差异性,并大幅提高规划工作效率,增强海绵城市规划的指导性和科学性。
附图说明
图1为径流控制指标调整因子的赋值计算流程。
具体实施方式
一种海绵城市径流控制指标调整因子的赋值计算方法,其特征在于所述方法包括
选取地块海绵建设影响因子;
根据对径流控制的影响度对因子进行赋值打分,确定刚性因子和弹性因子;
对单因子指标进行归一法处理,得出各因子权重赋值;
采用适宜性指数法分析、评定每个单因子的权重赋值,在得到的各因子相对权重进行加权分析后,最终得到具有针对性的CSI得分;
得出各地块海绵指标特征调整因子。
进一步地,所述地块海绵建设影响因子包括:来自于现状用地摸查及资料的影响因子,包括:降水规律、用地性质、开发强度、地块上下垫面情况、土地污染情况、内涝风险分析;来自于国家地方海绵城市建设导则及要求的影响因子,包括:年径流总量控制目标、年径流污染控制目标、排水防涝标准、雨水资源利用率;以及来自于相关规定要求的影响因子,包括:用地性质、地块面积、容积率、建筑密度、建筑限高、是否经营性设施、公共设施配套要求、新改建或保留。
本发明通过地块径流控制有影响的单因子进行筛选和分别赋值,输入海绵城市建设相关的单因子指标并进行评价打分,再采用归一法对单因子指标进行处理,得出各因子评价赋值。然后通过各因子进行复合评价,采用“适宜性指数法”(属于相对定量的综合分等法)来分析、评定每个单因子的权重赋值。在得到的各因子相对权重进行加权分析后,最终得到具有针对性的CSI得分,即为特征调整因子。
Claims (2)
1.一种海绵城市径流控制指标调整因子的赋值计算方法,其特征在于所述方法包括
选取地块海绵建设影响因子;
根据对径流控制的影响度对因子进行赋值打分,确定刚性因子和弹性因子;
对单因子指标进行归一法处理,得出各因子权重赋值;
采用适宜性指数法分析、评定每个单因子的权重赋值,在得到的各因子相对权重进行加权分析后,最终得到具有针对性的CSI得分;
得出各地块海绵指标特征调整因子。
2.如权利要求1所述的方法,其特征在于所述地块海绵建设影响因子包括:来自于现状用地摸查及资料的影响因子,包括:降水规律、用地性质、开发强度、地块上下垫面情况、土地污染情况、内涝风险分析;来自于国家地方海绵城市建设导则及要求的影响因子,包括:年径流总量控制目标、年径流污染控制目标、排水防涝标准、雨水资源利用率;以及来自于相关规定要求的影响因子,包括:用地性质、地块面积、容积率、建筑密度、建筑限高、是否经营性设施、公共设施配套要求、新改建或保留。
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CN113657744A (zh) * | 2021-08-11 | 2021-11-16 | 厦门市城市规划设计研究院 | 一种海绵城市建设面源污染控制指标的确定方法 |
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CN113657744A (zh) * | 2021-08-11 | 2021-11-16 | 厦门市城市规划设计研究院 | 一种海绵城市建设面源污染控制指标的确定方法 |
CN113657744B (zh) * | 2021-08-11 | 2024-04-12 | 厦门市城市规划设计研究院有限公司 | 一种海绵城市建设面源污染控制指标的确定方法 |
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