Building houses with bamboo structure instead of traditional reinforced concrete

Can bamboo replace reinforced concrete to build houses? Of course! If you go to the world famous Shanghai World Expo, you will find that two pavilions have already adopted bamboo structure One is the smallest exhibition hall in Shanghai World Expo Park, the "German Chinese counterparts home" exhibition hall, which is a two-story environmental protection building covered with membrane and all bamboo structure The other is the India Pavilion with an area of more than 4000 square meters, which is mainly made of bamboo structure The Indian Pavilion is 18 meters high, with a single span of 36 meters for a large circular dome 40 tons of bamboo are used for the dome and girder alone In fact, prior to this, the international bamboo and rattan organization and Professor Xiao Yan of the school of civil engineering of Hunan University have combined their research projects, adopting the modern bamboo structure architecture and glue bamboo patent technology with independent intellectual property rights of Professor Xiao Yan's research team, and have taken the lead in building three bamboo structure villas in the world One is built in Hunan University, two floors up and down, with a building area of 250 square meters and an area of 160 square meters The other two are respectively built in Zizhuyuan Park in Beijing and Cailun Zhuhai Park in Leiyang, Hunan As a distinguished professor of Changjiang Scholars, Mr Xiao Yan is now the dean of the school of civil engineering of Hunan University, the director of the laboratory of the Department of civil engineering of the University of Southern California, the director of the center for engineering and seismic research, the doctoral supervisor, the chief scientist of 985 Science and technology innovation platform, and the scholar of the national "thousand talents plan", etc., and has published more than 100 papers, including more than 50 SCI searches Papers What materials can be used to replace the traditional reinforced concrete in building houses? It's a question that Xiao Yan has been thinking about for many years Wood is good, of course, but not sustainable So he thought of bamboo, which is not only an ideal building material, but also four times more capable of absorbing carbon dioxide than Eucalyptus China is the main bamboo producing area in the world Bamboo has been used in China for thousands of years Bamboo is evergreen, fast-growing and renewable It has replaced wood and other high-energy raw materials in many fields and is known as "plant steel bar" According to statistics, 70 hectares of bamboo forest can provide the bamboo materials needed to build 1000 original bamboo structure houses every year But if these houses are made of natural wood, 600 hectares of virgin forest will be destroyed Professor Xiao Yan said that the construction time of building bamboo structure house is short, and it is basically not affected by the climate The structural components can be made on site or prefabricated in the factory and then transported to the site for installation It takes 6 to 10 months to build the same house, while the bamboo structure house is successfully completed by 8 workers in 100 working days, with fast construction speed and low labor intensity It is worth mentioning that the occupancy rate of bamboo structure houses is 8% to 10% higher than that of brick concrete structure houses Professor Xiao Yan said that bamboo structure has good toughness and anti-seismic performance Even if the whole structure is deformed in a strong earthquake, it will not be scattered or collapsed In addition, the heat conduction speed of bamboo is slow and its heat preservation and heat insulation are excellent, which can greatly reduce the energy consumption of residential buildings Professor Xiao Yan said that the construction cost of the bamboo structure model house of Hunan University is about 950 yuan / square meter, and the total construction cost of the bamboo structure villa model house built in the Zizhuyuan Park of Beijing can also be controlled at 1600 yuan / square meter Related technologies have obtained and applied for more than 10 national patents Professor Xiao Yan can not only build houses with bamboo, but also build bridges with bamboo In 2007, Professor Xiao Yan led the research team to build a bamboo bridge in Shangxun village, Daozi Township, Leiyang City, Hunan Province At the end of that year, the bridge was opened to traffic, becoming the first modern bamboo structure bridge in the world that can pass heavy trucks The bridge is 10 meters long and consists of nine bamboo beams The design traffic load is 8 tons and the service life is 20-30 years The bridge has been in good condition since it was opened to traffic It has been awarded the world's best engineering innovation award in 2008 by the US magazine "new era of science and technology" It has become another international award project after "Water Cube" in China Professor Xiao Yan led the research group to build a bamboo pedestrian overpass in the campus of Hunan University, with a span of 5 meters and a bridge deck width of 1.5 meters Recently, Professor Xiao Yan's research group has built two pedestrian landscape bamboo bridges 40 meters and 20 meters long in Dongguan Vanke science and technology park Professor Xiao Yan said that bamboo overpass can also be changed according to the needs of the form, such as arch bridge, suspension bridge, etc., and can be changed according to the construction site requirements of the structural layout and detail treatment, with strong adaptability After nearly 4 years' efforts, Professor Xiao Yan has established a system of modern bamboo structure residence and bamboo structure bridge It is the dream of this returned scholar to build more bamboo structure houses for Chinese people Xiao said that the research group will complete the preparation of relevant technical standards under the support of key projects of NSFC, and conduct in-depth research on key technologies such as long-term performance and comprehensive protection performance of bamboo structure, so as to provide scientific and technological support for industrialization.