So now, the building machines have become smaller, smarter, and can fit into different heights and sizes. It's an effort to curb regional competitions for creating new landmarks as vanity projects – some of which are not needed. The country rolled out regulations to ban construction of skyscrapers exceeding 500 meters in height and limit construction of buildings exceeding 250 meters. The market has changed, however, after China took a different turn in rising skylines. I've learned that previous generations of building machines were much heavier, weighing a couple of thousand tonnes, and they could build super tall buildings quite easily. Wang chairs the research center that has been perfecting the building machines. We need to improve the industrialization of the building machine," he added. It is also necessary to consider whether it can be efficient and use fewer resources. "The building machine itself is just a piece of equipment. "In terms of the construction equipment and technology, we are in a leading position in the world," said Wang Kaiqiang, executive director for the China Construction Institute of Advanced Technology. It takes the platform four hours to jack up, which is half the time needed for previous generations. The one I saw is a fourth-generation machine. When we start jacking, the hydraulic cylinder system of these 12 columns pushes the platform to a new height," explained Qi Te, another engineer working on the Great River Project, who took me to the control room.īasically, hydraulic systems lift the entire platform up while it builds up the tower. A hydraulic cylinder system is installed in the columns for jacking. "There are 12 columns, which are shown in pink. It took two years to complete one third of the main tower of almost 400 meters with the help of the building machine, which weighs almost 1,000 tonnes. It offers workers a safe working environment," said Bao Zeding, an engineer from the General Construction Company of the China Construction Third Engineering Bureau (CCTEB) Co., Ltd.īao is part of the team building the Great River Center in central China's Wuhan along the Yangtze River bank – a new cluster of modern high-rises. For our integrated building machine, the most important thing is to provide a safe and stable platform. Conventional racks are unstable at heights of 300 to 500 meters. "Work safety at heights is the most important factor, because strong winds and torrential rains affect it. That means multiple floors can be built at the same time – improving efficiency while reducing labor costs by 20 percent. And the other levels are for moulding, concreting and structural reinforcement. The top level is for binding steel bars and creating the skeleton of a building. The company is awaiting approval for its 220-floor building, called Sky City, which will also be in Changsha.The machine covers three and half structural floors. “This is definitely the fastest speed in our industry.” The company had honed its technology to speed up its construction from two floors to three floors a day, he added. The first 20 floors were completed last year, and the remaining 37 were built from 31 January to 17 February this year, Xiao said. The structure is safe and can withstand earthquakes, according to Xiao.īroad Sustainable Building spent four and a half months fabricating the building’s 2,736 modules before construction began. Mini Sky City has 19 atriums, 800 apartments and office space for 4,000 people, with space in the building going on sale in May. “People nowadays want more personalised architecture.” “But it is not perfect, and it does not meet all kinds of personalised demands,” Liu said. Liu Peng, the associate director of the engineering consulting firm Arup Beijing, said the method was worth developing because it could become a safe and reliable way to build skyscrapers quickly. Some critics say the method could lead to cityscapes with overly uniform architecture. Modular methods have been used for high-rise apartment blocks elsewhere, including in Britain and the US. “With the traditional method they have to build a skyscraper brick by brick, but with our method we just need to assemble the blocks,” the company engineer Chen Xiangqian said. Its time-lapse video of the rapid build has become popular on Chinese video sharing sites since it was first uploaded to YouTube. It worked on Mini Sky City in two bursts interrupted by bad weather. The rectangular, glass and steel building has 19 atriums, 800 apartments and office space for 4,000 people.
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