Text / Shi Xiaoke
Stepping on the land of Bangladesh, and teaching the Gobi Desert, which is difficult to live in.... Meng Xianglin, who graduated from Wuhan University of Science and Technology, has a “small goalâ€: becoming a “small†expert in the field of “green buildingâ€.
Meng Xianglin, who is engaged in the construction industry, is well aware of the burden of real estate construction on the urban environment. According to statistics, the amount of construction waste generated by new construction, demolition and decoration in China is about 1.55 billion to 2.4 billion tons per year. The real estate industry accounts for more than 40% of China's carbon emissions.
Along with the real estate economy from the golden age through the silver age, and gradually evolved into the current bronze age, urban land resources are constantly scarce, and “urban renewal†will become an important way for real estate enterprises to obtain resources. They are facing difficulties in construction site construction and upgrading of construction processes.
Companies that have always relied on extensive growth and built houses in the traditional way will face greater difficulties, and “green buildings†will become a cure.
Prefabricated building, a member of the green building system and attached lifting scaffolding, plaster-free technology, high-precision leveling of the structural panels, and the green construction of the 70-skilled man Was uncovered.
Meng Xianglin, head of technical resources group of Chengdu Vanke Engineering Management Department
Foreseeing the industry's ceiling business strategy for transformation
The first time I saw Meng Xianglin, the head of the technical resources team of the Engineering Management Department of Chengdu Vanke Real Estate Co., Ltd., was an afternoon in Chengdu officially entering the autumn. When it was rainy and cold, the passers-by tightened the neck and stepped forward. .
In September 2010, Meng Xianglin officially became a member of Vanke. In that year, Vanke Group crossed the 100 billion mark for the first time and became the first “100 billion housing enterprises†in the country.
Seven years later, Vanke has now been on the road of “trillion scale of ecologyâ€. The current housing enterprises are facing a more severe scale competition, and the pattern of the strong and strong is hard to shake.
In fact, no matter whether the company has set up hundreds of billions of "big goals" for itself, the "scale" that wants to maintain high-speed growth is difficult to achieve in a resource-limited situation. With the continuous shortage of land resources, the real estate market is under the deep control of macroeconomic policies, and the various costs of housing enterprises are rising. Those enterprises that rely on “extensive†scale growth will soon encounter bottlenecks in development.
For Vanke's insistence on doing "green building", in Meng Xianglin's view, this aspect is based on the corporate social responsibility, and it is also the upgrade and transformation of Vanke's judgment on the future trend of the real estate industry.
In most people's eyes, "green building" is a thankless and expensive thing. However, in the eyes of Meng Xianglin, who has been in business for 18 years, only “green buildings†can make real estate enterprises achieve sustainable development.
Meng Xianglin said that in the future, urban land resources will be less and less, and the growth rate of enterprise scale is likely to slow down because urban space will not expand indefinitely. “Urban renewal†will become the main way for real estate enterprises to obtain land resources. Urban renewal projects are often close to surrounding buildings. How to effectively reduce pollution, noise, reduce construction time and meet or even exceed government-developed urban renewal projects. The policy standards for construction in accordance with green building standards will become problems encountered when housing enterprises develop urban renewal projects.
He also mentioned that the average age of migrant workers on construction sites is around 45 years old, and the young labor force is not willing to work on construction sites. As the existing workers are getting older, the site will no longer be suitable for them. How can enterprises solve their employment difficulties?
Under the trend of “urban renewalâ€, the multi-dimensional technological upgrading of building industrialization, the use of green materials, and green construction promoted by “green buildings†will become a symptomatic cure for the above problems.
At the end of last year, Shenzhen City issued the “Shenzhen City Renewal Measuresâ€, which mentioned that in the process of urban renewal, green buildings should be used to create a livable environment, improve energy structure, promote the use of water and rainwater, and strengthen the reuse of construction waste. A variety of ways to effectively promote energy conservation and emission reduction work.
On October 17, Chengdu also issued the “Implementation Opinions of the General Office of the People’s Government of Chengdu Municipality on Further Accelerating the Development of Finished Residential Buildings in the Cityâ€, which clarified that by 2022, the newly-built commercial housing and affordable housing residential area of ​​the city will be completed by 2022. With a ratio of 100%, these policies are placing higher demands on companies.
Responsibility, first-class technological innovation, fruitful results
The concept of “green building†was proposed at the “UN Conference on Environmental Development†held in Rio de Janeiro, Brazil in 1992, and the time proposed by the country was relatively late. However, in 1999, the state put forward the concept of “construction industrializationâ€. Meng Xianglin said that there were not many enterprises responding at the time, and Vanke was the first to respond.
Then, in August 2006, Vanke acquired the first phase of the residential industrialization research base in Songshan Lake. From then on, the process of transforming the technical achievements into practical residential industrialization and application was started. In February 2007, Vanke was also built. The Ministry awarded the title of “National Housing Industrialization Baseâ€.
Under the impetus of the policy, “green building†has developed at a certain scale in China. In 2012, the newly developed real estates in the country were green buildings, accounting for less than 2% of the total amount of development, but according to the “13th Five-Year Plan†for building energy efficiency and green building development issued by the Ministry of Housing and Urban-Rural Development earlier this year. The plan clearly stipulates that the proportion of green building area in urban new buildings exceeds 50%, and the proportion of green building materials application exceeds 40%. In Meng Xianglin's view, the scale of green buildings across the country will have a relatively large development in recent years.
Meng Xianglin said that Vanke has strong technical support for green buildings, and a group of professional talents have set up a green research team. Those "black technologies" for building technology are all from their wisdom. For example, Vanke’s pioneering “industrialized residential†and “vertical water recycling†technologies with innovative industry significance are the main driving force behind the realization of the “green city†behind the real value of “green buildingâ€.
Under the efforts of Vanke, as of the end of 2016, the construction area of ​​Vanke Green Samsung has reached 1.828 million square meters, and the construction area of ​​green one and two stars reached 26.512 million square meters.
Vanke's green building index ranked first in the country in 2015 and 2016, and Shenzhen Vanke City, the country's first green Samsung residential project, has long been the industry benchmark.
What Meng Xianglin wants to see most is that it is a city where he can live and work in peace and contentment. It can be better because of the continuous upgrading of construction methods.
Fortunately, Chengdu Vanke's engineering and technical team also made more attempts in the project under his leadership.
For example, in the fifth city of Vanke, the application of “Sponge City†was made. Previously, sponge cities were mostly used in municipal construction. Vanke applied the technology of sponge city in the community, and collected rainwater in the reservoir. When the road in the community rains, there will be no water accumulation in time. If necessary, use it when needed. The stored rainwater is used to water the plants in the community.
The same is the reuse of water resources, Meng Xianglin mentioned that he was responsible for the Chengdu Vanke green three-star operation logo project Wulongshan Park, did a water recycling system, is to discharge the household's domestic wastewater into dedicated equipment, after After purification, it is used to irrigate the community. According to him, this whole set of equipment will cost an extra few million.
The increase in the cost of “green building†to enterprises is an unavoidable topic. Meng Xianglin said that, for example, in the development and construction of industrial buildings, according to the assembly rate, at this stage it is about 300-800 yuan / square meter of construction costs than traditional project construction.
But such a cost increase Meng Xianglin believes that it is very worthwhile. First of all, the conservation of land resources, water resources and other ecological resources is the focus of environmental protection. "Many places are still extremely short of water. We cannot waste resources in such a vain manner." Meng Xianglin said seriously that this is the social responsibility of Vanke. It is also our personal social responsibility.
In addition to the conservation of resources, reducing the generation of construction waste from the source and reducing the burden on the environment is also one of the important tasks of green buildings. Meng Xianglin said that according to the traditional construction process, the concrete pouring time of the whole floor slab takes more than 20 hours. However, because many construction sites in the main urban area are difficult to get the night construction permit, the result of industrialization of the laminated slab can be achieved. Solve the problem. That is to say, in the process, the floor is prefabricated in the factory, and after the site is installed, a layer of steel is placed on the upper layer, and finally a layer of cast-in-place is laminated, so that the amount of on-site commercial concrete can be reduced, and the time can be reduced during the daytime. The pouring is completed, and the noise impact on the surrounding residents at night is also avoided.
There is also Vanke's plaster-free system. Through the use of high-precision aluminum alloy formwork and fabricated wallboard, there is no need to use traditional methods to build shale bricks on site, which reduces the process of wall plastering. Improving the quality of the house can also improve construction efficiency.
Since the choice of “green buildingâ€, Vanke has achieved fruitful results. As of 2016, Vanke's newly started industrialized project area was 33,479,300 square meters, reaching 83.4% of Vanke's total construction area; saving more than 344 million kWh of electricity throughout the year; saving about 30.135 million square meters of water; reducing waste by 13.31 million tons; Saving about 426,000 square meters of wood.
Despite this, Meng Xianglin still expects “green buildings†to be widely popularized and practiced in the real estate industry. More companies can join this “green campâ€, and such carefully built buildings can be recognized and accepted by the public.
In fact, Meng Xianglin also has a "big goal", which is to establish more mature standards for Vanke in the green building development system and contribute his energy to the progress of the industry.
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