China's skyscrapers have entered the era of "rapid proliferation". In more and more cities, people are used to seeing new "sky cities" rising constantly. According to relevant statistics, at present, there are 42 cities in China that have built, are under construction and plan to build skyscrapers over 300 meters.

Although there are no skyscrapers in the fourth and fifth tier cities, with the rapid development of society, high-rise buildings emerge one after another. Compared with the dazzling appearance, security issues have attracted more and more attention. Fire rescue of high-rise buildings is extremely important, but it is extremely difficult.

It is understood that a fire broke out on the top floor of a residential area in Chengde recently, but the fire truck could not be put out at all, which led to the scene being out of control.

At present, the highest rescue height of ladder truck in China is 10 1 m, but the rescue of higher floors can only rely on the top fire isolation belt, smoke spray system, refuge floor and helicopter. A firefighter told the reporter, "Even at the height of 10 1 m, it is often difficult for fire engines to function effectively due to the surrounding environment. Firefighters often have to go indoors and use indoor equipment to extinguish fires and save people. "

It is precisely because of the increasing difficulty of external rescue that more work needs to be done in the fire protection design and facilities inside super high-rise buildings. China's Code for Fire Protection Design of High-rise Civil Buildings has made a series of detailed provisions on the plane layout, fire rating, building structure, safe evacuation, fire extinguishing system and smoke exhaust facilities of high-rise civil buildings, which not only improves the fire safety level of high-rise buildings, but also greatly increases the construction cost.

According to the architectural design standard of General Principles for Civil Building Design in China, buildings with a height of 100 meters are super high-rise buildings. However, in recent years, innovative skyscrapers all over the country have already pushed the height of 100 meter far away.

(The above answers were published on 20 16-06-05. Please refer to the actual situation for the current purchase policy. )

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