2005 passed by very quickly, and 2006 came quietly. This year, the design plans for all Olympic venues were basically finalized, and Li Yu, Jiang Wei, and others who also participated in the design also participated in the construction management of various landmark buildings that faced this super challenge.
In January 2006, under the recommendation of Fan Lao and others, Li Yu, Jiang Wei, Zhao Heng, Tan Fei, and Cheng Yu were fortunate enough to join the construction team because they had Therefore, this time the company joined in a cooperative manner with the Olympic Organizing Committee and construction units through design deepening and technical support. Behind them, they represented the technical support of Fan Lao and others, while Fan Lao from China State Construction Engineering Corporation and Chen from the Department of Architecture of Tsinghua University Mr. Zhang from the Department of Civil Engineering, Mr. He from the Chinese Institute of Technology, and Mr. Yang from the Beijing Institute of Technology are the technical consultants this time. The five people were also fortunate enough to become their apprentices, and they usually communicated with several elders and the construction unit. Except for Li Yu, it was the first time for everyone else to come into contact with construction. They really felt like they were rushing to put it on the shelf. It was more tiring than they had done in previous design projects. However, when they thought about the Bird's Nest Stadium alone, it cost more than 3 billion. After construction, their performance in the past few years has caught up with others in a lifetime, so they have to come, and since their company is running, now several graduates are doing very well, and the company's administrative affairs are temporarily unavailable. It was handed over to Zhang Han and Cheng Jin. Since Han Jing had studied interior design, she would also come to help.
Now when Han Jing is busy, her calligraphy and painting works have won many Lanting Awards, Chinese Painting Gold Awards, etc., and have been exhibited many times, and her book, The Fire of Youth, If Life Is Only the Same as Before Books such as See, Jinlan, That Fading Beauty, etc. have gained popularity on the Internet. She has become the most popular new era beauty novelist. She designs interior design, and communicates and learns from Li Yu in many places. She He learned quickly and gained a lot of experience, so he was very willing to come here to help, and the help was not in vain. Han Jing held art exhibitions in the past few years and her works were worth the money per square meter. She expanded dozens of acres of land to the north, and alone An art entrepreneurship zone was built to give those few people the opportunity to develop, and Li Yu was given 20% of the real estate shares. Li Yu asked his father to decorate their art area as a whole, and all the designs came from Han Jing.
Moving on to sports venues, the National Stadium is mainly composed of the main stadium building and a warm-up hall closely adjacent to it, as well as the corresponding outdoor environment. The venue has 2,000 fixed seats and 2,000 temporary seats. During the Olympic Games, it was used as a venue for competitive gymnastics, trampolining, and handball. During the Paralympic Games, it was used as a venue for wheelchair basketball. After the Olympic Games, the National Stadium plans to become a first-class sports facility in Beijing, integrating collective sports competitions, culture and entertainment, and providing multi-functional services to citizen activity centers.
The owner of the National Stadium is Guoao Investment and Development Co., Ltd. Li Yu and others cooperate with them. The construction unit is responsible for the investment, construction and operation of the entire National Stadium, while Li Yu and others are in charge of design and technology. The design unit of this project is Beijing Institute of Technology, and the construction unitFor Beijing Urban Construction, the supervision unit is Beijing Construction Engineering.
The National Stadium takes the Chinese "folding fan" as its design inspiration, fully embodies the Olympic concept of "Green Olympics, Science and Technology Olympics, and Humanistic Olympics" and the principle of "running the Olympics frugally", focusing on functional design, environmental protection design and aesthetics. The combination of design reflects the design principles of function first, technology first, meeting competition, complying with regulations, energy conservation and environmental protection, and post-game utilization.
The National Stadium is located in the south of the central area of the Olympic Park, adjacent to the "Bird's Nest", "Water Cube" and the National Convention Center. Since competition venues and stadiums have different space height requirements, the National Stadium is designed with inspiration from the Chinese "folding fan" and adopts a wavy shape from south to north. The roof is light and dynamic. This wavy shape also cleverly connects the corresponding flat-topped "Water Cube" in the north and south and the single-curved National Convention Center, making the urban landscape in the Olympic Park harmonious and unified.
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This Olympic competition venue (gymnastics, trampoline, handball finals) located in the south of the central area of Beijing Olympic Park has a very complex structure. The east and west facades are overhanging I-beams, the main structure and the bleacher board The poured concrete matches the components, and the span of the steel roof trusses is also very large. Humanized and environmentally friendly design has become the biggest highlight, with noise reduction everywhere. After the Olympic Games, the National Stadium became the indoor sports hall with the most advanced facilities and the largest number of seats in Beijing. Its main function is to organize various international and domestic professional sports events and large-scale sports, cultural and commercial performance activities.
The "Bird's Nest" structure of the main stadium is mainly composed of a huge portal steel frame, with a total of 24 truss columns. The hoisting of 20 whole truss columns and 2 lower columns has been completed. The top surface of the building is saddle-shaped, with a long axis of 332.3 meters and a short axis of 296.4 meters. The highest point is 68.5 meters high and the lowest point is 42.8 meters high. The main structure is designed to have a service life of 100 years, with a fire resistance level of Level 1, a seismic fortification intensity of 8 degrees, and an underground engineering waterproofing level of 1. The main building of the project is in the shape of a space saddle oval, 333 meters long from north to south. The main body is a giant space saddle-shaped steel truss woven "Bird's Nest" structure. The total steel consumption of the steel structure is 42,000 tons. The concrete stands are divided into upper, middle and lower The concrete structure of the grandstand is a reinforced concrete frame-shear wall structure system with one floor underground and seven floors above ground. The steel structure and the upper part of the concrete grandstand are completely separated and not connected to each other. They are enclosed in form and sit on a connected base plate. The steel structure of the "Bird's Nest" roof is covered with a double-layer membrane structure, that is, the transparent upper EtFE membrane fixed between the upper chords of the steel structure and the translucent lower ptFE acoustic ceiling fixed under the lower chords of the steel structure and on the side walls of the inner ring. In order to avoid overly complex nodes, a small number of main trusses are cut off near the inner ring. The steel structure uses a large number of box-shaped components welded by steel plates. The cross-arranged main trusses and the secondary structures of the roof and facade form a special architectural shape of "Bird's Nest". The main stand is made of reinforced concreteThe concrete frame-shear wall structural system is completely separated from the long-span steel structure.
The "Bird's Nest" structural design is unique and novel, and q460, which built its steel structure, is indispensable. q460 is a low-alloy high-strength steel that is twice as strong as ordinary steel. It combines strength and flexibility, thus ensuring that the "Bird's Nest" can still return to its original shape after withstanding an external force of up to 460 MPa, that is, It is said that it can withstand seismic waves like the Tangshan earthquake. This is the first time that Q460 steel has been used in building structures in China; the thickness of the steel plate used this time is 110 mm, which is unique before. In the national standard, the maximum thickness of Q460 is only 100 mm. In the past, this kind of steel was usually imported from abroad. In order to provide the "Bird's Nest" with a "fitting" q460, everyone started years of scientific and technological research together, and finally succeeded in three trial productions. 400 tons of domestically produced q460 steel with independent innovation and intellectual property rights support the iron and steel bars of the "Bird's Nest". Therefore, the independent innovation and research and development of q460 steel has created a great architectural work - the "Bird's Nest".
In addition to these two, there are also the famous Water Cube membrane structure swimming pool, the famous badminton stadium, the famous sailing Olympic theme park, etc., each venue is important to them. A great technical challenge and a great blessing in their lives.
Several people have used all their experience here. With the help of senior consultants and the cooperation with construction and supervision general contracting units, they have achieved considerable success. This time, Li Yu's father was also lucky enough to win the bid for part of the Olympic projects. Therefore, Li Yu and his father were on different sides for the first time! But the same thing is that as Chinese people, they all want to work hard to display the project to perfection and want the whole world to admire the country! In the last life, Li Yu didn't have the opportunity to participate in such a key project, and she participated in all of them. This time, she fulfilled her dream in the previous life, so she really showed her housekeeping skills, and she shouldn't have appeared in the first place. She also recommended the new technologies at that time one by one. In an instant, she became the person with the most scientific research potential in the eyes of others. The bosses of major groups wanted to sign her after she graduated. Only two people didn't think so, her father Li Jianye and her. Her father wanted her to be a happy and beautiful woman at home, while she wanted to grow her company and become a business giant.