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Lu Ban was born in the state of Xiaoying (now Tengzhou City, Shandong Province) during the Warring States period
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Lu Ban is a great inventor of handicraft technology and invention in the history of Chinese civilization
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He is the representative of “craftsman spirit”
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At present, the spirit of craftsman is more in line with the needs of the development of the times, and has become an important force to breed and nourish “made in China” and “built in China”, which has important value of the times and extensive social significance“ Luban Award, established in 1987, is an award guided by the Ministry of housing and urban rural development and selected by China Construction Industry Association
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It is the highest honor award for engineering quality in China’s construction industry
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On the occasion of international labor day, in order to further inherit the craftsman spirit and carry forward Luban culture, “construction technology” specially released the album of “Luban Award project observation” to enjoy the first batch of Luban Award projects from 2020 to 2021 with the majority of fans【 The first phase of Zhongxian E-sports venues and supporting facilities EPC project has just finished the super performance of “Avatar” and is still intoxicated in the blue world
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I didn’t expect that this passion soared again, just because the “King’s glory” of China Construction Second Engineering Bureau liked to mention Luban Award! The EPC project of Chongqing Zhongxian E-sports venue and supporting facilities contracted by China Construction Second Engineering Bureau won the gold medal of China steel structure and the star of China installation
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As the first all steel E-sports venue in China, it is the professional arena of the national mobile E-sports competition
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How can our “King” shine in the southwest? This will lead us to explore the “double wing” steel, Shining southwest Zhongxian E-sports venues and supporting facilities EPC project is located in Zhongxian, Chongqing
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The total investment of the project is 1.4 billion yuan, covering an area of 180 mu, including the main hall, exhibition hall, comprehensive incubation center, etc
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The main stadium has a total construction area of 79000 square meters and a total steel consumption of 40000 tons
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It is the first all steel E-sports stadium in China and the first professional E-sports complex in Asia“ As the first all steel E-sports Pavilion in China, the project has attracted much attention before it started
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However, waiting for the team is one difficulty after another
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Tackling the “time barrier”: at the beginning of the construction of the project of creating a large-scale myth in seven months, we received the news from the local government that this E-sports complex will hold its first international competition in seven months! In other words, the project should be completed in seven months
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Ma Zebing, the production manager of the team at that time, calculated the account: the project consists of 10 large divisions, 61 sub divisions and 244 sub divisions
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It usually takes two years for such a large amount of engineering construction! To overcome difficulties is to face difficulties
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Under the EPC general contract management mode, the project establishes a “four sides and two platforms” efficient communication mechanism, and the forces of each side are mobilized centrally, and the design, procurement and construction are carried out across the whole process, and the construction efficiency is greatly improved
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The project is under the construction of galvanized glass
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The sunlight is reflected by the glass
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A raw egg will be cooked in 2 minutes, and it will be burned if you don’t pay attention to it
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” Ma Zebing recalled that in order to overcome this problem, the project pasted a “tailor-made” film on the glass to cool down, and carried out three shifts of construction at the same time, overcoming the difficulties at one stroke
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In order to overcome the installation difficulties of large-span truss, the project team has overcome the installation and construction technology of super long primary and secondary truss and ring truss dome steel structure, and the installation and construction technology of airfoil roof huge different cross-section honeycomb beam structure system, which has effectively solved the problems of difficult hoisting, slow progress, and long-span truss structure Low precision and unloading deformation monitoring
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In the harsh natural environment, the team completed an output value of 600 million yuan in three months, completed 40000 tons of steel structure hoisting in half a year, and refreshed the construction speed of large-span special-shaped venues in seven months! Tackling the “precision pass”: the “embroidery” on the steel bar is formed once
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The e-sports Pavilion is located in the Three Gorges Reservoir area
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If you look down from high altitude, you can see the steel casting wings of the “Iron Man” shining in the sun
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It is this special shape that makes the project construction face great challenges again
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Chen Zhong, the then project manager, said that the overall shape of the project was a cylindrical dome with a span of nearly 100 meters, a weight of about 100 tons and a height of nearly 6 meters
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In order to improve the welding accuracy of the truss, the team decided to carry out super long processing on the truss“ The local highway is being built, so the transportation truss can only choose two nearby mountain roads, and the super long truss can’t be transported at all! ” Chen Zhong said
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What should I do? The team brainstormed for a week, doing experiments, asking experts, field survey..
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Finally, the “Three-stage” installation method was born“ The “three-stage theory” installation method solves the installation problem well
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Generally speaking, first of all, simulate the pre assembly and optimize the installation sequence; Then, special personnel are stationed in the factory to ensure the consistency of processing and design; During the installation, the ground is divided into six sections, and finally the whole assembly is carried out at high altitude
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Everything comes to him who waits
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The qualified rate of 95300 m weld flaw detection is 100%, 1010 pile foundations are qualified through one-time detection, and 441800 high-strength bolts are all qualified through re inspection..
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The team has completed the “limit challenge” with high quality within the planned construction period
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Tackling key technical problems: achieving perfect performance, the e-sports Pavilion is not only “beautiful”, but also “unique”: fast construction technology of large-span special-shaped venues, installation and construction technology of super long primary and secondary trusses and ring truss dome steel structure..
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The project integrates five international leading technologies, not only speed and precision are guaranteed, but also BIM Technology Application is “superb”
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Gu Yang, a technician of the project, recalled that during the peak period, there were more than 4000 workers, 31 Units and 48 large and medium-sized equipment operating at the same time, which led to the problem of organizational cooperation“ We solve the collision problem by building a full professional BIM model, and use software to optimize the steel structure components to reduce the difficulty of construction
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Combined with BIM cloud platform and UAV tilt photography technology, we integrate information and improve the efficiency of project coordination and management
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” Gu Yang said
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BIM Technology has created high efficiency in the whole construction process
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In the artificial stone mosaic of 48000 square meters, because the curve of stone is different, it is difficult to control the overall mosaic
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The millimeter deviation of any point will affect the smoothness and coordination of the arc
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Therefore, BIM Technology is used in the project to optimize the ceiling and floor tiles, improve the utilization rate of materials, and ensure the consistency of ceiling and floor patterns
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After calculation, the project only uses one new technology, and the benefit will reach 23.6649 million yuan
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Zhongxian E-sports hall project has been put into use for more than one year
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27 international and domestic competitions have been held to welcome 300000 people
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Source: Southwest Company, installation company and decoration company of China Construction Second Bureau
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The copyright belongs to the original author and the original source, if the original copyright owner does not agree
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