可渗水面积率在控规中的估算方法与设计应用  

ADVOCATING A HYDROLOGICAL ZONING IN- DEX INTO DESIGN AND DEVELOPMENT CONTROL: ITS ESTIMATION MODEL AND AP- PLICATION IN BEIJING

作　　者：龚清宇[1] 王林超[1] 苏毅[1] 

机构地区：[1]天津大学建筑学院

出　　处：《城市规划》2006年第3期67-72,共6页City Planning Review

基　　金：国家自然科学基金资助项目(50308017)。

摘　　要：从绩效角度,1.提出“当量可渗水面积率”概念;2.通过雨水截流量比率确定可渗水面积折算系数,推算出适用于北京城区及其近郊的当量可渗水面积折算系数简表;3.提出基于绿地率指标的当量可渗水面积率估算模型,与现行控规指标体系衔接;4.给出基于当量可渗水面积率的奖励办法。案例应用表明,当设计暴雨频率P≥20%时,水环境友好设计可保证北京近郊开发后地表径流增量为0,全部就地滞蓄、再利用。This paper, on a performance basis, （1） defines the concept of Pervious Cove equivalence （PCe）; （2） estimates the PCe coefficient for each typical kind of land cover by estimating the detention capacity with and without storm water facilities and, provides with a concise table of PCe coefficients applicable to the inner city and outskirt of Beijing; （3） presents a PCe estimation model in accordance with the green area ratio enacted in development control; and （4） suggests the PCe based zoning incentives. Finally our experimental design demonstrates that a water sensitive design will help retain a zero increase in the total outflow after development in the suburban of Beijing through maximizing the detention capacity when the rainfall frequency is no rarely than 20%.

关 键 词：当量可渗水面积率 控规指标 估算模型 雨洪管理 

分 类 号：TU992.01[建筑科学—市政工程]