2019 Annual WASLA Conference
Greater Tacoma Convention Center, March 22, 2019
4:15 - 5:15 PM
Redrawing Grey Cities to Climate Resilient Sponge Cities
Session Presentation
Description:
I. Introduction: Context, Challenges, and Design Objectives (10 minutes)
A. Brief introduction of China’s Sponge City Initiatives
B. Introduction to case studies (case studies will be referred to throughout the presentation)
1. Zhenjiang City – 22 square kilometers of old urban areas (city scale)
2. Hengqin District in Zhuhai City (District scale)
3. Qingshan South Cannel Community in Wuhan City (Community scale)
4. Jiangbin Residential Neighborhood in Zhenjiang City (residential and parcel scale)
5. Sponge City Park in Zhenjiang City (regional green stormwater facility)
6. Jiangsu University Campus (innovative green stormwater facilities treatment trains)
II. Sponge City Planning: Problem oriented planning and new development planning (20 Minutes)
A. How to setup the realistic targets of sponge city goal for pilot cities in China
1. Identify the problems such as flooding and river/lake water quality deteriorations
2. Collecting weather, land use, topograph, drainage network, hydraulic structures etc. data
3. Building SWMM models at various spatial scale
4. Calculating pollution load from parcels to the watershed scale
5. Identifying flooding area and “hot spots” through calibrated SWMM model simulations
6. Using TMDL to allocate pollution load to each treatment facility at community scale
7. Based on the simulation results and analysis layout the distributions of “sponge facilities” and setup the runoff volume, peak flow reduction and pollutant removal rate for each drainage sub-basin.
B. The case studies
1. Zhenjiang City (preventing flooding from 30-year storm event and restore the lakes and rivers in the city to meet Chinese Class III surface water standard
2. Hengqing District (conversations and protection of sensitive areas when new development is planned)
III. Case studies from the planning, outreach, engineering design to construction observations of sponge city projects (20 munites)
1. Retrofit old residential neighborhoods using functional landscape methods
2. Building bio-retention systems for the sidewalk and city roads
3. Integrating green and grey infrastructure to achieve climate resilient goal
4. Making green stormwater infrastructure more aesthetic looking
IV. Innovative green stormwater infrastructure design (10 minutes)
1. Sponge Park to treat combined sewer overflow (CSO)
2. Treatment train that integrating functional landscape infrastructure to treat stormwater and
V. Discussion / Q&A (30 minutes)
Speaker Bios:
Nian She, Guangzhou University
Nian She, Ph.D. Director of Institute of Smart Sponge City Construction and PlanningTsinghua University Innovation Center in ZhuhaiDr. He has more than 28 years of experience in river/lake restoration, sediment remediation, water quality, hydrologic/hydraulic modeling, stormwater management and water resources planning and management. He was a senior civil engineering specialist with City of Seattle before joining Tsinghua University Innovation Center in Zhuhai. He is also a distinguish professor in Guangzhou University and a guest professor in Shenzhen University of China.Dr. He has been working in LID/GSI since early 1990s and working on hundreds of LID/GSI projects worldwide. He has been working on dozens of pilot sponge cities from planning, engineering design, construction, operation and maintenance in the past three years.
Learning Objectives:
- Learn design principals and methods for applying green stormwater infrastructure in urban settings
- Gain insight into successful strategies for collaboration between civil engineers and landscape architects
- Understand hydrology modeling and impactful landscape solutions
- Learn techniques for meaningful community outreach and engagement
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