城市建筑格局对雨洪过程的影响  

The Impact of Urban Architectural Pattern on Rainfall and Flood Processes

作　　者：宋奇珂 刘成帅 赵晨晨 李文忠 李铭[1] 胡彩虹[1] SONG Qi-ke;LIU Cheng-shuai;ZHAO Chen-chen;LI Wen-zhong;LI Ming;HU Cai-hong(Zhengzhou University,Zhengzhou 450001,Henan Province,China)

机构地区：[1]郑州大学水利与交通学院,河南郑州450001

出　　处：《中国农村水利水电》2025年第4期169-175,共7页China Rural Water and Hydropower

基　　金：“十四五”国家重点研发计划(2023YFC3209303)。

摘　　要：城市形态指描述城市组成、环境以及各类活动的空间结构,包括城市用地的几何形态、城市内部的各种功能以及建筑的空间格局等。为探讨城市中不同建筑格局对雨洪过程的影响,在郑州市根据不同建筑格局选取了12个区域,构建12种不同城市建筑格局的城市内涝模型,根据设计降雨数据模拟4种不同重现期(10、20、50和100a重现期)的内涝过程。通过分析不同建筑格局和不透水面积百分率降雨情景下的排水口进流量变化过程和内涝淹没特征值,探讨了城市建筑格局对雨洪过程的影响。结果表明:①排放口峰值流量在不同城市建筑格局分布下表现出一定差异,在矩形和环形格局中差异表现明显,在扇形格局中差异较小。②随着不透水率增加,排水口流量退水阶段速率增加;同一不透水率下,不同城市建筑格局分布下的雨洪过程有所差异,在环形格局中表现更为明显。③在研究数值模拟情景下,不同城市建筑格局分布对径流特征值有一定影响,主要表现为不同城市建筑格局分布对径流系数影响相对较小,对径流峰值和峰现时间的影响较为明显。研究结果揭示了城市建筑设计中空间布局与雨洪管理的联系,系统讨论了不同建筑格局对降雨径流的影响规律,为可为城市建筑格局的设计优化和雨洪过程形成机理研究提供科学参考。Urban form refers to the spatial structure that describes the composition,environment,and various activities of a city,including the geometric shape of urban land,various functions within the city,and the spatial pattern of buildings.To explore the impact of different building patterns on rainfall and flood processes in cities,12 regions were selected in Zhengzhou city based on different building patterns,and urban waterlogging models were constructed for 12 different urban building patterns.Based on the designed rainfall data,waterlogging processes were simulated for four different recurrence periods(10、20、50 and 100 years).By analyzing the changes in the inflow rate of drainage outlets and the characteristic values of waterlogging under different building patterns and impermeable area percentages of rainfall scenarios,the influence of urban building patterns on the process of rainfall and flooding was explored.The results indicate that:①The peak flow rate of emission outlets shows certain differences in the distribution of building patterns in different cities,with significant differences in rectangular and circular patterns,and relatively small differences in fan-shaped patterns.②As the impermeability rate increases,the flow rate of the drainage outlet during the water withdrawal stage also increases;Under the same impermeability rate,there are differences in the rain and flood processes of different urban building patterns,which are more pronounced in the circular pattern.③In the numerical simulation scenario of this study,the distribution of different urban building patterns has a certain impact on the runoff characteristic values,mainly manifested as a relatively small impact of different urban building pattern distributions on the runoff coefficient,and a more significant impact on the peak runoff and peak appearance time.The research results reveal the relationship between spatial layout and rain and flood management in urban architectural design,and systematically discuss the impact of differen

关 键 词：城市格局 SWMM 城市雨洪 数值模拟 郑州市 

分 类 号：TU992[建筑科学—市政工程]