| 摘要: |
| 集水区作为雨水汇集的基本单元对雨水排放有很大
的影响，对集水区的优化设计可以有效提高雨水排出效率。以
石家庄铁道大学长安校区翠园及其周边区域为例，对该区域的
高程变化、排水设施、绿地分布进行调研，计算该地区重现期
为1年一遇、5年一遇，历时2 h；10年一遇、20年一遇，历
时24 h的降雨曲线，并通过SWMM软件分别对区域内现状、
优化集水区2种情况的雨水径流、出流、雨涝风险与关键节点
深度变化进行分析。结果表明，经过优化后的集水区可以有效
消减79.7％~91.9％的径流峰值，同时降低了雨水井的溢流
量。在优化集水区后布设低影响开发设施也能将低影响开发设
施的渗水效率提高45.9％~56.1％。为使该策略能够更加方
便地应用于老旧校园绿地改造，同时结合参数化设计技术，以
研究区域内的园林绿地为例，将绿地集水功能与园林形式进行
有机融合。 |
| 关键词: 风景园林 源头减排 海绵城市 SWMM模型 芝加哥雨型法 老旧校园改造 |
| DOI：10.19775/j.cla.2024.06.0084 |
| 投稿时间：2022-04-06修订日期：2024-01-10 |
| 基金项目: |
|
| Influence of Optimization of Green Space CatchmentArea on Old Campus on Rainwater Discharge andLID Facility Function: A Case Study of ShijiazhuangTiedao University |
| HUANG Zhenxing,WU Yong,FAN Yanting,SUN Yiyuan |
| Abstract: |
| The catchment area, serving as the fundamental unit for
rainwater collection, significantly influences rainwater discharge,
and optimizing its design can substantially enhance rainwater
drainage efficiency. Taking Cui Garden and its surrounding areas at
the Chang'an campus of Shijiazhuang Tiedao University as a case,
this study investigates changes in elevation, drainage facilities,
and the distribution of green spaces within the region. It calculates
rainfall curves lasting 2 hours for the area with recurrence interval
of 1 and 5 years, , and that lasting 24 hours with recurrence interval
of 10 and 20 years. The study analyzes rainwater runoff, outflow,
flood risk, and changes in the depth of key nodes under two
scenarios: the current condition and the optimized catchment area,
using the SWMM software. The results indicate that the optimized
catchment area can effectively reduce runoff peaks by 79.7% to
91.9%, and decrease the overflow volume from stormwater wells.
Installing low-impact development (LID) facilities in the optimized
catchment area can also improve the infiltration efficiency of
these LID facilities by 45.9% to 56.1%. To facilitate the strategy's
application in the renovation of outdated campus green spaces, the
study also integrates parametric design techniques, using the green
spaces within the study area as an example, to organically merge the
water collection function of green spaces with landscape forms. |
| Key words: landscape architecture source control sponge city SWMM Chicago hyetograph method old campus reconstruction |
