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Frontiers of Engineering Management

ISSN 2095-7513

ISSN 2096-0255(Online)

CN 10-1205/N

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Front. Eng    2016, Vol. 3 Issue (1) : 87-96    https://doi.org/10.15302/J-FEM-2016003
ENGINEERING MANAGEMENT REPORTS
The Exploration and Practice of the Development of Green Eco-Urban Areas in Guangzhou International Financial City
Jia-meng Chen1,Peng Liu2,*()
1. Guangzhou Administration Office of Major Public Construction Projects, Guangzhou 500006, China
2. Shenzhen Institute of Building Research Co., Shenzhen 518049, China
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Abstract

Active exploration has been carried out to determine a pattern for developing green eco-urban areas in the Starting Area of Guangzhou International Financial City with an emphasis on the core role of comprehensive green arrangement. By comparing and analyzing existing research, development of green technologies at home and abroad, and indicator systems of green urban areas of similar sizes, the builders developed a green ecological indicator system. They proposed a new concept called “district-level indicator” in order to emphasize the importance of classifying indicators according to different project situations. By verifying the indicators for all land parcels and assessing future costs and efficiency, experience accumulated in this project can be beneficial for future green eco-urban area development projects.
Keywords Guangzhou International Financial City      green eco-urban area      indicator system      case verification     
Corresponding Author(s): Peng Liu   
Online First Date: 16 March 2016    Issue Date: 26 May 2016
 Cite this article:   
Jia-meng Chen,Peng Liu. The Exploration and Practice of the Development of Green Eco-Urban Areas in Guangzhou International Financial City[J]. Front. Eng, 2016, 3(1): 87-96.
 URL:  
https://academic.hep.com.cn/fem/EN/10.15302/J-FEM-2016003
https://academic.hep.com.cn/fem/EN/Y2016/V3/I1/87
Fig.1  Aerial view of the Starting Area of Guangzhou International Financial City.
Fig.2  Implementation approach for the green eco-urban area in the Starting Area of Guangzhou International Financial City.
Type Indicator name Indicator value
Land conservation Underground space usage ratio ≥1.6
Energy conservation Renewable energy utilization ratio ≥0.4%
Energy conservation ratio of the building envelope Public building: Star 1≥50%; Star 2≥51.5%; Star 3≥52.5%Residential building:≥50%
Building lighting power density Target value
Efficiency enhancement of cold/hot sources in the heater and air conditioner ≥6%
Coverage of the building energy consumption monitoring system Public building: 100%
Water conservation Nontraditional water resource utilization ratio ≥5.5%
Field comprehensive runoff coefficient ≤0.49
LID construction ratio ≥25%
Popularity of water-saving instruments 100%
Coverage of water-saving irrigation 100%
Material conservation High-strength steel utilization ratio ≥70%
Environment quality Green volume ratio ≥0.85
Compliance rate of environmental noises ≥90%
Landscaping ratio of the skirt building surface ≥40%
Length ratio of sidewalk shade to sidewalk shelter ≥5%
Field ventilation suitability in the summer ≥80%
Compliance rate of the daylighting on the ground floor ≥4.5%
Indoor background noise of the building Land parcels on both sides of the backbone road on the ground: average value of the lower limit and the higher standardOthers: higher standard value
Percentage of prioritized parking spaces ≥10%
Tab.1  Indicator System for the Green Eco-Urban Area of the Starting Area of Guangzhou International Financial City
Fig.3  External conditions, problems, and suggestions for each district in the Starting Area of Guangzhou International Financial City.
Fig.4  Green technology indicators for each district in the Starting Area of Guangzhou International Financial City.
Fig.5  Centralized district for renewable resource utilization (land parcels are not suitable for such utilization).
Fig.6  Renewable energy utilization in the central district (land parcels with red crosses are not suitable).
Type Indicator name Green indicators of AT090908 Case verification – review comments Case verification – implementation suggestions
Land conservation Underground space usage ratio — This is an overall indicator, and therefore does not need to be assessed for single land parcels —
Energy conservation Renewable energy utilization ratio — — —
Energy conservation ratio of the building envelope ≥50% This is a mandatory energy conservation requirement. Please implement this indicator according to the requirement —
Building lighting power density Target value Due to lack of electrical design drawings, this indicator cannot be determined temporarily Implement this indicator according to the target value required by GB 50034 Building Lighting Design Standard
Efficiency enhancement of cold/hot sources in heating and air conditioning ≥6% Due to lack of heating and ventilation design drawings, this indicator cannot be determined temporarily Please select cold/hot sources of the air conditioner according to the requirement to ensure energy conservation effects of the building
Coverage of the building energy consumption monitoring system 100% Due to lack of electrical design drawings, this indicator cannot be determined temporarily Electrical personnel should separately measure special electricity consumption of air conditioners, lighting sockets, and power units according to the requirement, and remotely transfer the data to the energy management center
Water conservation Nontraditional water resource utilization ratio — Due to lack of water supply and drainage design drawings, this indicator cannot be determined temporarily Water supply and drainage personnel should learn about the design status of the related municipal reclaimed water pipeline network, and set up the reclaimed water disposal equipment and related pipeline network according to the landscaping, road cleaning, and underground garage cleaning requirements of municipal reclaimed water
Field comprehensive runoff coefficient ≤0.56 Due to lack of landscape design drawings, this indicator cannot be determined temporarily It is difficult to implement this indicator. The subsequent design should focus on increasing the permeable sidewalk pavement and roof landscaping coverage, and lowering the field comprehensive runoff coefficient through comprehensive measures
LID construction ratio — — —
Popularity of water-saving instruments 100% Due to lack of water supply and drainage design drawings, this indicator cannot be determined temporarily It is relatively easy to implement this indicator. This indicator should be implemented subsequently according to the requirement
Coverage of water-saving irrigation ratio 100% Due to lack of water supply and drainage design drawings and landscape design drawings, this indicator cannot be determined temporarily It is relatively easy to implement this indicator. This indicator should be implemented subsequently according to the requirement. Water-saving irrigation methods such as microspray irrigation are recommended for the surface landscaping of skirt buildings if conditions permit
Material conservation High-strength steel utilization ratio ≥70% Due to lack of structure design drawings, this indicator cannot be determined temporarily High-strength reinforcement bars or steel materials are recommended for three high or super high towers in this project. Ensure a utilization ratio of more than 70%. For the commercial building D, this indicator may not be applicable
Environment quality Green volume ratio — — —
Compliance rate of environmental noises ≥90% The field is adjacent to Huangpu Road. The actual ratio of field noises is estimated to be less than 90%, which does not meet the requirement It is recommended that landscapes or building structures be set up in the plaza on one side of Huangpu Road to mitigate traffic noises
Landscaping ratio of the skirt building surface ≥50% Basically meets the requirement According to the overall drawing of the project, this indicator is determined as basically meeting the requirement. This indicator should be implemented subsequently according to the requirement and the field comprehensive runoff coefficient
Length ratio of sidewalk shade to sidewalk shelter ≥20% Basically meets the requirement Design personnel should review subsequently whether this indicator reaches 20%. It is recommended that a shade and shelter corridor be set up in the northwest plaza of the field and between high buildings to meet the requirements
Field ventilation suitability in the summer ≥80% Fail to meet the requirement In this project, the overall floor plan is prone to wind amplification and high building ventilation problems. In subsequent designs, review this indicator through outdoor ventilation simulation and properly adjust the overall floor plan to increase the dimensions of the ventilation corridor between buildings A and B
Compliance rate of the daylighting on the ground floor ≥10% Cannot be determined temporarily Use the sunken plaza and daylighting roof to improve the daylighting design of the underground space. It is recommended that a simulation review be performed and this indicator be implemented according to the requirement. You can refer to the local improvement measures of landscape design such as light pipes and daylighting roofs
Indoor background noise of the building Average value of the lower limit and the higher standard Due to lack of building construction drawings, this indicator cannot be determined temporarily Implement this indicator according to the requirement. Focus on improving the building envelope, especially the soundproofing performance of glass walls
Percentage of prioritized parking spaces ≥10% Cannot be determined temporarily Implement this indicator according to the requirement
Tab.2  Indicator Case Verification and Suggestions for the Green Eco-Urban Area on AT090908 in the Starting Area of the Guangzhou International Financial City
Type Indicator name Indicator value Incremental costs/(CNY 10,000)
Land conservation Underground space usage ratio ≥1.6 —
Energy conservation Renewable energy utilization ratio ≥0.40% Photovoltaic: 3553Thermal: 750
Energy conservation ratio of the building envelope Public buildings: Star 1≥50%; Star 2≥51.5%; Star 3≥52.5%; Residential buildings:≥50% 2708
Building lighting power density Target value 2400
Efficiency enhancement of cold/hot sources in heating and air conditioning ≥6% 5760
Coverage of the building energy consumption monitoring system Public buildings: 100% 410
Water conservation Nontraditional water resource utilization ratio ≥5.5% 346
Field comprehensive runoff coefficient ≤0.49 —
LID construction ratio ≥25% —
Popularity of water-saving instruments 100% —
Coverage of water-saving irrigation 100% 128
Material conservation High-strength steel utilization ratio ≥70% —
Environment quality Green volume ratio ≥0.85 —
Compliance rate of environmental noises ≥90% —
Landscaping ratio of the skirt building surface ≥40% —
Length ratio of sidewalk shade to sidewalk shelter ≥5% —
Field ventilation suitability in the summer ≥80% —
Compliance rate of daylighting on the ground floor ≥4.5% 216
Indoor background noise of the buildings Land on both sides of the backbone road on the ground: average value of the lower limit and the higher standard; Others: higher standard value —
Percentage of prioritized parking spaces ≥10% —
Tab.3  Estimation of the Incremental Costs for Constructing the Green Eeco-Urban Area in the Starting Area of Guangzhou International Financial City
Type Indicator name Indicator value Resources intensification efficiency
Land conservation Underground space usage ratio ≥1.6 Saving a land area of 106,000 m2
Energy conservation Renewable energy utilization ratio ≥0.40% Saving 1,877,000 kWh per year
Energy conservation ratio of the building envelope Public buildings: Star 1≥50%; Star 2≥51.5%; Star 3≥52.5%; Residential buildings:≥50% Saving 3,270,000 kWh per year
Building lighting power density Target value Saving 14,016,000 kWh per year
Efficiency enhancement of cold/hot sources in heating and air conditioning ≥6% Saving 8,640,000 kWh per year
Water conservation Nontraditional water resource utilization ratio ≥5.5% Saving 408,200 tons of water per year
Popularity of water-saving instruments 100% Saving 772,000 tons of water per year
Environment quality Compliance rate of the daylighting on the ground floor ≥4.5% Saving 105,000 kWh per year
Tab.4  Resource Intensification Efficiency of the Project
Energy saved per year/kWh Standard coal saved per year/ton CO2 Emission reduced per year/ton SO2 Emission reduced per year/ton Dust emission reduced per year/ton
27,908,000 34,299,000 8470.5 68.7 33.9
Tab.5  Environment Friendly Efficiency
Type Indicator name Indicator value Descriptions of other efficiency
Water conservation Field comprehensive runoff coefficient ≤0.49 More than a half the rainfall runoff volume can be reduced. This efficiently reduces the peak discharge of rainfall drainage, relieves municipal drainage pressure, increases the water retention properties of the field, and reduces the heat island magnitude of the area
LID construction ratio ≥25% Technical measures can be taken to increase the rainfall infiltration such as field landscaping and permeable pavements
Environment quality Green volume ratio ≥0.85 The green area ratio of equivalent ground cover plants is about 85%, creating more green space and volume in a limited space
Compliance rate of environmental noises ≥90% This ensures quietness and comfort for main personnel in the outdoor areas of the land parcel
Landscaping ratio of the skirt building surface ≥40% This efficiently improves thermal comfort of the skirt building roof and reduces temperatures of interior roof surfaces by 3°C to 5°C
Length ratio of sidewalk shade to sidewalk shelter ≥5% This provides a barrier-free travel space with daylight shade and shelter from rain, improving the comfort level of outdoor activities
Field ventilation suitability in the summer ≥80% This ensures that over 80% of the occupied area outdoors is ventilated and that people will feel comfortable
Indoor background noise of the buildings Land on both sides of the backbone road on the ground: average value of the lower limit and the higher standard; Others: higher standard value This can create a comfortable and quiet indoor environment with reference to the surrounding environment
Percentage of prioritized parking spaces ≥10% This can promote the usage of small-displacement or new-energy vehicles, which contributes to urban traffic emission reduction
Tab.6  Other Efficiency
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