Infiltration trenches are popular green stormwater infrastructure (GSI) systems in dense urban areas primarily due to their small footprints that cope with the limited available space and subsurface utility conditions. To investigate the dynamic, seasonal performance of urban infiltration trench systems, more than three years of continuous rainfall and water level data from an infiltration trench in Philadelphia, Pennsylvania, were analyzed. The recession rates in the infiltration trench showed a seasonality (higher recession rates in warmer months and lower recession rates in colder months) and a head-dependency (higher recession rates in higher water levels). To incorporate this dynamic performance into a simple modeling approach that can be used in practical applications, both event-based and continuous simulation models were developed using storage units in SWMM, and calibrated/validated against observed data. The most important conclusions for dynamic modeling of infiltration trench systems were the introduction of monthly adjustment factors for saturated hydraulic conductivity (Ksat) and a head-dependent component for infiltration to the surrounding in-situ soil in the model, both of which were determined by calibration. Benefits of the presented dynamic modeling approach were demonstrated by comparing the dynamic and static modeling results, indicating the capability of the dynamic approach to promote sustainable and resilient design of infiltration trench systems.

渗透沟是密集城市地区流行的绿色雨水基础设施（GSI）系统，主要是因为它们的占地面积小，可应对有限的可用空间和地下使用条件。为了调查城市渗透沟系统的动态，季节性性能，分析了宾夕法尼亚州费城渗透沟的三年以上连续降雨和水位数据。渗透沟的衰退率表现为季节性（温暖季节的衰退率较高，寒冷月份的衰退率较低）和人为依赖（较高水位的衰退率较高）。要将这种动态性能纳入可以在实际应用中使用的简单建模方法中，基于事件的模型和连续的仿真模型都是使用SWMMH中的存储单元开发的，并根据观察到的数据进行了校准/验证。渗透沟槽系统动力学建模的最重要结论是引入了饱和导水系数（Ksat）的每月调整因子和渗透到周围原位土壤的水头相关成分，这两个因素均通过以下方法确定：校准。通过比较动态和静态建模结果证明了所提出的动态建模方法的优势，表明了动态方法能够促进渗透沟槽系统的可持续性和弹性设计。渗透沟槽系统动力学建模的最重要结论是引入了饱和导水系数（Ksat）的每月调整因子和渗透到周围原位土壤的水头相关成分，这两个因素均通过以下方法确定：校准。通过比较动态和静态建模结果证明了所提出的动态建模方法的优势，表明了动态方法能够促进渗透沟槽系统的可持续性和弹性设计。渗透沟槽系统动态建模的最重要结论是引入了饱和导水率（Ksat）的每月调整因子和渗透到周围原位土壤的水头相关成分，这两个因素均通过以下方法确定：校准。通过比较动态和静态建模结果证明了所提出的动态建模方法的优势，表明了动态方法能够促进渗透沟槽系统的可持续性和弹性设计。