Beijing International Trade three month opening the first high-rise building due to 911 modification plan

"Height" 330 meters of Beijing first high-rise international trade three period will be opened this month.　　Yesterday, the reporter on-site visit learned that the "first high-rise" in the project design, reference to the United States events in the devastating external forces to combat factors, targeted to improve the building's "anti-damage" ability. >> safety design can reduce impact damage of aircraft Construction Party building One bureau group Construction Development Co., Ltd. yesterday revealed that the United States after the incident, the third phase of the International trade Design scheme has been adjusted accordingly.　　In order to ensure the safety of the future, party a proposes to modify the design plan. After the demonstration and modification, the building plan adopted 40,000 tons of steel bar, 180,000 cubic meters of concrete and 55,000 tons of steel structure formed by the "Steel reinforced concrete structure", and the use of fire-resistant time up to 3 hours of fireproof paint to the bare steel structure for fire treatment. Such materials such as steel, in the history of domestic architecture is rare. The result of this design is that the building can effectively reduce the damage caused by the impact of the aircraft and improve the fire resistance of the building itself.　　The previous design, the building is composed of steel structure, once encountered the same problem, steel structure will rapidly melt due to high temperature, leading to rapid collapse of the main building. Some floors have bulletproof glass Construction party said, the international trade three main tower exterior façade all uses the glass, the glass outer piece is 10 millimeters thick tempered low radiation glass, the inside piece is 8 millimeters tempered transparent glass. Insulating glass can better prevent the transfer of heat, coupled with low radiation coating, can make the outdoor sun less ultraviolet light into the indoor, reduce the production of greenhouse effect, thereby saving energy.　　Because of this, the international trade three main tower window can not be opened, and cooling heating all adopt internal air-conditioning. It is worth mentioning that, because the main tower part of the floor with a ballroom, the future may receive heads of state-level figures, so these areas of glass are bulletproof glass.　　At the same time, as the main tower outside the façade of all the glass structure, connecting glass materials can emit different colors of light, the night of the three-year trade Center tower can glow, but so far has not been officially displayed. Anti-nuclear shock wave of civil air defense design according to the introduction, the international trade three of the underground 3 floors and 4 floors are Civil Air defense layer, the total area of more than 20,000 square meters, the wall is the thickest of 0.5 meters.　　Peacetime, these two floors is the underground car park, the wartime can complete the function conversion through the Civil Air defense secret closed door, can effectively resist the nuclear weapon explosion the shock wave which produces.　　In addition, the main international trade tower 330 meters high, how to ensure that aircraft flying at low altitude does not collide?　　Construction side, the building in the 330 meters high apron around the installation of 8 strong flash, and in the main building outside the four Corners set 8 alternating flash obstacle lights, the aircraft for navigation. 5 Refuge floors for 3 hours a common sense is that, according to the design standards, buildings above 24 meters are high-rise buildings, and higher than 50 meters of buildings belong to high-rise buildings. There was a test conducted by the city Security Department to have a strong fireman run from the 33rd floor to the 1th floor, with 35 pointsMinutes。 If it is a person of physical fitness or an old man or a child, the time required will certainly be longer. With the wind, the fire can reach the 33rd floor in 30 seconds from the 1th level.　　In this way, the likelihood of people running outside the building in a high-rise building is almost Nil. For fire, in order to ensure the safety of personnel, the main tower in 14, 28, 39, 55 and 74 layers designed 5 refuge, surrounded by fire-resistant materials and reinforcement structure, equipped with fire smoke-proof system, in case the building on fire, refuge layer can guarantee safe fire within 3 hours.　　In the future, when the building is put into use, the refuge layer can not be used for his use, can not lock off, but also may place some food and water, and update at any time. >> Other designs The hidden apron on the top floor of the building is revealed to have a helipad at the top of the building.　　The apron size according to the current China straight 9 Series helicopter design, can park and take off medium helicopters. 90 elevator "passenger" up and down reporter interviewed learned that the "first high-rise" for the elevator placement and operation speed, the requirements are very high. International trade three a total set of 90 elevators, the fastest speed can reach 10 meters per second, this should also be the current Chinese mainland elevator fastest speed of operation.　　When the third phase of the international trade into use, people can feel an instant rise or fall.　　>> official said the city Regulatory Commission does not advocate the city to build super high-rise yesterday, the Municipal Regulatory Commission related officials told reporters that Beijing does not advocate the construction of high-rise buildings. The person in charge said that this kind of building actually has the flaw in the energy conservation, the security and so on.　　In addition, the operating costs of such buildings are very high, in fact, many countries, the operation of high-rise buildings is not optimistic, because of their own operating costs and maintenance costs are very high. The official said that Beijing did not have a separate planning for ultra-high-rise buildings, but in accordance with Beijing's overall planning situation, in line with the regulatory standards, owners can build super high-rise buildings. In other words, when the land is sold, every land has been regulated, including building height, volume rate, etc. Building height planning is high, at the same time the owners are willing to build, there will be super high-rise buildings. He said that compared to residential areas, the commercial area is more prone to high-rise building, because the residential district to take care of the adjacent buildings lighting problems.　　In addition, some of the construction of the urban areas, also prone to high-rise buildings, because these regional buildings relatively sparse. >> Links International Trade Three is located in the east Third Ring road and the Jianguo Road outside the northwest corner of the trade three project, is a set of super five-star hotels, high-end office buildings, international boutique shopping malls, cinemas, banquet halls, underground car park as one of multi-functional modern intelligent building, building area of nearly 300,000 square meters　　The main tower has a total height of 330 meters, is currently the tallest building in Beijing. The project is divided into a and b two phases, the highest building and auxiliary building is only a phase a, and will be with the international trade first phase, two phase together constitute 1.1 million square metersOf the world's largest international trade center, the b phase is still in the research design stage, the specific design plan has not yet been defined. (Reporter 翟烜)