Guangzhou Steel News: Steel optimize cost savings 70,000,000
Guangzhou Steel News: "not only refers to the implementation of green construction and closed construction in the construction, no dust, no noise nuisance, the site is surrounded by flowers and grass planting, watering and other content execution timing when it comes to sustainable all aspects of development, such as content ecology and environmental protection, resource and energy use, social and economic development. The real green construction should be to 'green way' as a whole, to be applied to the construction of the entire construction process as a microcosmic System Science to carry out green construction design. "
Institute of Civil Engineering Guangdong Province recently held 2016 green construction demonstration project examples seminars and on-site demonstrations in Guangzhou, the Guangdong Provincial Institute of Civil Engineering Deputy Secretary-General said.
Demonstration Site: East Tower
Height of 530 meters of the East Tower, is the tallest building in Guangzhou. Not only does it set at the height of the building from the benchmark Guangzhou, but also in terms of green high-rise building construction also set a new "benchmark."
Development of high-rise building green construction assessment indicators
According to reports, the most difficult high-rise building green construction is no index for green construction of high-rise buildings, green construction process data scarcity, lack of construction waste separation and recovery of data, it is difficult to quantify resource consumption and construction waste, electricity is difficult Real-time automatic monitoring acquisition.
East Tower in the construction process, to develop a high-rise building green construction assessment indicators proposed structure during the construction dust is not greater than 0.5 m, foundation construction dust visual height of less than 1.5 m; building materials main material loss rate reduced by 30%; Saving 30 %, and strive to non-traditional sources and recycled water reuse more than 20%; reasonable layout, compact, to meet the environmental, occupational health and safety and civilized construction requirements of the premise as far as possible to reduce waste and dead ends, the temporary facility covers effective utilization rate greater than 90%.
Clock wireless monitoring system comprehensive monitoring energy consumption
Construction sites large electricity, saving energy is an important part of green construction. However, building high-rise buildings in particular, in the construction process energy control there is a problem, on the one hand Face scattered, many professional, involving civil engineering, steel, machinery, elevators, walls, decoration, lighting ......, statistics is extremely difficult; On the other hand, energy consumption no data reference, no norms to follow.
Construction process for the real-time control of each floor, the energy consumption data of each face, to achieve fine super high-rise projects, digital control, the East Tower project department to develop and deploy temporary electricity around the clock wireless monitoring system in the Face, each floor deployment data collection station and smart meters, through self-organizing wireless sensor networks self-routing of the way the data is sequentially automatically gathering from each floor to the ninth tier server.
Through this system, not only can see the meter location, number of rules and other information, you can view any loop "Today electricity", "last week", "last 30 days", "the most recent year," and any time period Histogram and electricity peak electricity periods, the minimum period of electricity energy values, and each face in electricity metering refined to minute, real-time control of the professional, electricity consumption for each service teams, can any time period according to Discover the various sub-units electricity consumption.
East Tower of energy monitoring for future green high-rise building construction has accumulated valuable experience data.
Structure "downsizing" to reduce the use of about 5,300 cubic meters of concrete
A lot of green construction methods, and the results are very different. In the East Tower, the most obvious green construction, most direct and most significant results from the innovative design, success comes from the main structure of "downsizing." In the East Tower, 30 floors below grade concrete increased from C60 to C80, the wall thickness from 1.8 m "downsizing" to 1.5 meters, an increase of about 1200 square meters of salable area, reducing the amount of approximately 5300 cubic meters of concrete, the structure of "downsizing "approximately 13,300 tons of carbon dioxide emissions by about 5300 cubic meters. Steel through optimized to reduce the amount of 7000 tons of steel structure of "downsizing" of about 52,500 tons, cost about 70 million yuan.
Demonstration Site: North Tower
Located in the central axis of the Pearl River New City CBD wealth center, it was called the "North Tower", is a classic green construction projects.
Wealth Center with a total construction area of 21.0477 million square meters, a total height of 309.4 meters, including 4 basement, ground floor 68. Its shape is very novel, the main building of "origami" type of innovative exterior design, get rid of the image of the traditional square box office; the main structure of the core tube frame with a reinforcing layer + Mega Braced Frame Structure System. The inner cylinder of reinforced concrete core wall, frame tube by the 20 giant steel columns and the east and west sides of the bracing system composed of a grid, in which the four corners of the four pillars creative use of the "inner circle of foreign" Duplex (double) steel concrete column.
Composite steel columns and materials giant earthquake
For small construction site, piling steel components less space, construction site haul roads lack, the construction unit in the construction of steel structure installation program optimization. The first application of composite steel giant column, reducing the thickness of the steel plate column, saving material steel. Four giant prism using "inner circle of foreign" Duplex (double) steel concrete columns, filled with high-strength concrete using steel ferrule effect can improve giant Japanese word column ultimate bearing capacity, while ensuring that the vertical column of giant Japanese word stiffness and ductility, to reduce the cross-sectional dimension of purpose, but also improve the seismic performance objectives, so that the elastic shock, earthquake do not yield. Secondly, under the crane lifting performance to meet the premise of reducing steel components segment, thereby reducing the time and site welding crane lifting capacity, saving energy. In addition, steel components in factory production process, acceptance and then transported to the site installation, to ensure project quality, achieve building component assembly of the installation and construction purposes.
Combination template support system green "taking into account the level of the core barrel floor structure construction lagged core tube vertical structure, vertical and horizontal transport more difficult, so the use of a combination of quick release aluminum templates and modular support systems combine modular plastic template Efficient template support system construction. "China Construction Industry Association Branch of green construction expert, professor level senior engineer, said.
According to reports, combined with quick release aluminum template support system with short construction period, reused more often, to facilitate the construction and high efficiency. Modular modular plastic template by optimizing composite structures, stability and rigidity make the template is greatly improved, with green, easy advantage of recycling, reducing construction waste, save a lot of timber, in line with the national "plastic wood, plastic steel, "the energy saving requirements.
"Fortune Center project construction process, and in ensuring the quality and safety of the premise, through scientific management and technological progress, to maximize resource conservation and reducing negative environmental impact of the construction activities, the realization of 'four a green'. At the same time the project Ministry of the characteristics of super high-rise construction projects, and actively promote the use of the building housing the Ministry of the ten major items of technology 9 35 sub-items, a variety of new technology innovations, and successfully applied in the construction of the project, effectively saving energy, time and materials section, green, to green construction requirements, "said:." implementation of green construction, help to improve enterprise management level; contribute to technological innovation, enhance the competitiveness of enterprises; help businesses save energy and reduce costs; also contribute to the smooth integration of enterprises with the international market. Green construction is construction eternal mission! "
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