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根据《室外排水设计规范(2011年版)》(GB 50014—2006)增补的数学模型法计算雨水设计流量,通过模拟城市雨水径流,得出雨水的洪峰流量和径流总量,该方法可进一步提高城市排水防涝设计计算精度,有助于实现雨水计算模型结构和参数的本地化。根据杭州市西湖文化广场试验小区的实测径流数据,验证城市雨水计算模型结构和参数的合理性以及推广的普适性,结果表明,雨水计算模型结构吻合度较好,可为城市雨水系统的规划设计、工程管理提供科学依据和技术支撑。
The design flow of rainwater is calculated according to the mathematical modeling method added in the “Standard for Design of Outdoor Drainage” (GB 50014-2006) (GB 50014-2006). By simulating urban stormwater runoff, the peak flow and total runoff of rainwater can be obtained. This method can further improve the urban Drainage waterlogging design calculation accuracy, help to achieve rainwater calculation model structure and parameter localization. According to the measured runoff data of Xihu Cultural Square in Hangzhou, the rationality of structure and parameters of urban stormwater calculation model and the universality of popularization are validated. The results show that the structure of rainwater calculation model is in good agreement and can be used in the planning of urban stormwater system Design, project management to provide scientific basis and technical support.