Nearly a month after Beijing’s uncompleted and not-yet-occupied Television Cultural Center (TVCC) highrise was ignited by fireworks, leaving it a charred shell, project members suggested new ideas about how the fire started and spread. Few are willing to speak on the record, but one developer unconnected to the project even proposed prohibiting fireworks in dense Beijing.

Fire, highrise, CCTV, Beijing
照片:美联社/广阔世界
烟花渗透th如何e building’s cladding remains unknown.

Adjacent to the iconic headquarters of China Central Television (CCTV), the new structure burned the night of Monday, Feb. 9, the last night of the Chinese New Year’s celebration. One firefighter died from smoke inhalation.

Most of the blame is directed at state-owned CCTV network. Beijing officials detained a total of 17 people, including the chief of construction, which CCTV admitted to hiring.They are part of the Hunan Province-based fireworks company that ignited several nearly 700 high explosive pyrotechnic devices for which it had not received the necessary municipal approval. Though the entire city was ablaze in fireworks to celebrate the last night of the 15-day Chinese New Year, the fireworks blamed for igniting the tower have been categorized as “A grade,” which require trained personnel granted with special permission from the city. “The company did not listen to the police, who advised against setting off A-grade fireworks,” said Luo Yuan, spokesman and deputy chief of Beijing Fire Control Bureau.

关于大火在31层的钢框建筑中蔓延的速度仍然存在许多问题,该建筑物的承包商是北京城市建筑集团有限公司。大火导致损失超过40亿元人民币(5.88亿美元),估计中国自由出版社。正如Caijing所解释的那样,《中国金融杂志》因其客观性和独立性而受到尊重,TVCC塔实际上是三个结构的组合:中心的一座主塔,该塔楼是一个餐厅和241个房间,由The Hotel管理的五星级酒店普通话东方和两个翅膀,两侧的两侧,以清晰的角色形式从塔上分支。这些旨在举办剧院,电视工作室和电子数据处理中心。

烟花渗透th如何e structure’s cladding isn’t clear. The tower’s northern and southern facades are metal and glass. On the east and south sides, metal strips form the cladding.

根据Caijing的说法,消防员怀疑其中的两个专业级烟火撞到了塔的南侧,燃烧在薄金属立面上,并在下面燃烧了可易燃的绝缘层,然后将火载在整个建筑物上。帮助设计CCTV复合体的几个建筑师提出了略有不同的可能性。在访问该网站并测量塔的视频和燃烧的照片之后,他们告诉Caijing,他们“怀疑烟花在几个点上燃烧到塔的外部。火焰从那里一直延伸到下面的绝缘层,然后在建筑物内部的室内装饰中散布进一步。”

There is an alternative theory behind the fire’s quick spread. Heat transfer alone may have set fire to the building, said an architect who took part in the design of the TVCC. The reinforcing bars that cover the TVCC are metal and could have become superheated from the nearby explosions. If they became hot enough, said the architect, they could have kindled the insulation. Beijings Fire Brigade said the fire began on the building’s roof and spread to the lower floors, fed by high winds, while a CNN report posited “there was a lot of debris on site, which ignited very quickly.”

Chimney effects in the core may have accelerated the fire’s spread. Once the fire broke out, the hollow core between the fifth and twenty-sixth floors of the TVCC may have accelerated the burn. Moving air in this space would have provided the fire with ample oxygen, with pressure from the smoke, fire and hot air building inside the coreuntil finally it exploded outward, carrying the fire through the whole building in the blink of an eye. In fact, several explosions were seen and heard, according to reports from those who were on site. The Beijing Municipal Fire Bureau also confirmed that the TVCC’s core collapsed in the fire.

Because construction wasn’t yet completed and sprinkler system not installed, there was a long delay before the fire was suppressed.TVCC had followed all city building codes, which include leaving the sprinkler system unpressurized during construction, according to Aaron DeWoskin, an architect at Huatong Design & Consulting Engineering, a company that focuses on registration and city ordinances for construction and engineering projects in Beijing.

至于烟花,将来不一定会被禁止。2005年,经过12年的休假后,北京与其他200个中国城市一起取消了对市中心烟花的禁令。潘希耶(Pan Shiyi)是北京最著名的开发商之一,担任SOHO集团董事长,他在他的博客上一直很挑剔,他写道:“在北京和北京一样大的城市,我们真的不应该允许烟花爆发烟花。”然而,市政政府的重点是这样的想法,即这是一种非法的高级烟火,使建筑物着火,而不是正常的新年光线工作的结果。

Neither Rotterdam-based Office for Metropolitan Architecture, which designed the complex for a budget near US$730 million, Arup East Asia, the local branch of the British design and engineering firm that worked on the complex, nor Mandarin Oriental, which is responsible for managing the hotel property, responded to calls or emails. But they all released statements and plan to announce further updates in the future. At this point, none have said whether the building will be torn down or renovations will commence on the standing skeleton. The building was scheduled to open mid-May and the hotel, which had been insured for 1.5 billion yuan (US$220 million), this summer. It is not immediately known whether the fire would postpone the official inauguration of the new CCTV tower, originally slated for October, nor the value of insurance payouts, which depend on the outcome of an ongoing investigation.