郑州绿地中心·千玺广场(Zhengzhou Greenland Plaza) - SOM

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项目概况:
建筑设计:Skidmore Owings & Merrill
地址:中国郑州(Zhengzhou, Henan, China)
建筑面积:240,169 平方米
基地面积:30,478 平方米
地上层数:55层
建筑高度:280 m
竣工时间:2013
设计完成年份:2007
照片版权:SOM | 图片来源: Si-ye Zhang

项目简介:
这座280米高的大厦是华中地区北部疾速发展的都会城市郑州的最高建筑。大厦位于一处新兴综合开发的核心,其富有古塔意象的经典外形在夜间璀璨犹如灯塔。

SOM在建筑设计中融合了尖端的环境技术。铝制外倾屏风表皮能够加强采光,而位于大厦顶部的日光反射装置,可将日光反射入酒店中庭。大厦还以智能建筑控制系统为特色,利用内部烟囱效应和外部风压营造了通风良好的环境。

(以上文字来自事务所官网,以下为英文翻译)

Skidmore Owings & Merrill LLP(SOM)建筑师事务所设计的郑州绿地广场写字楼最近向其使用者敞开了大门。郑州地处中华腹地,这座60层的圆形大厦成了城市之中最高的建筑。大厦位于郑州市东北部,高919英尺(280米),其圆形造型与周边的开发项目形状互为呼应,后者的中央有一座人工湖。郑州绿地广场在周边环境中格外引人注目,为这个地区乃至整座城市的天际线增添了一抹全新的亮色。

绿地广场总建筑面积259万平方英尺(240169平方米),低层为办公区域,高层为一家拥有416间客房的酒店。采光是建筑设计的关键因素。造型复杂的上漆轻型铝架遮阳屏每组三到五层楼高,向外倾斜安装,经过科学计算光线反射,提高了室内采光效果,同时还能保护整体玻璃外表皮避免被太阳晒得温度过高。遮阳屏不但功能丰富,而且外形美观。同样是这些辅助日光采集的向外倾斜的铝架,也能助人工照明一臂之力,在其最外侧安装了照明装置,每当夜幕降临,灯光璀璨,整座大厦如同灯塔一般明亮。
遮阳屏的安装位置距离建筑的玻璃幕墙一两米远,这样窗户擦拭工作就可以在遮阳屏后方进行。外立面的空隙多少取决于观察者所处的位置。若是靠近建筑物的基座仰望,大厦看上去主要是金属外皮,而从远处看,这些金属立面面板就显得较为开放,其内部的玻璃幕墙也能显露出来。遮阳屏的斜面充满了节奏感,随着高度的增加,尺寸逐渐减小,显得充满活力,赋予大厦细密的表面纹理,也符合建筑物的人文诉求。

大厦随着楼层的增加缓缓地逐渐变细。SOM的设计总监Ross Wimer说:“我们将该建筑构思为一根古典立柱。其标志性的形象来自于这一超越时间的建筑形式,同时利用21世纪的尖端技术,建造了一座体现当前时代的建筑。”设计中的创新包括建筑顶部的日光反射装置,将阳光洒入酒店的整个中庭。Wimer说:“日光反射装置是一种高科技元素,如同遮阳屏一般,改善了建筑使用者的自然光环境。”该设备可反射日光并聚集到中庭,中庭表面经过处理能让光线进入空间最深处。计算机控制的调光开关可根据每个楼层的光线强度分别调节,从而减少中庭的照明与供暖能耗。

Wimer指出,圆形的摩天大厦尽管并非没有先例,但也是不太常见的。其中最著名的几个例子包括美国设计师伯特兰?戈德堡在芝加哥设计的马利纳城(179米)、诺曼·福斯特爵士在伦敦设计的圣玛丽·阿克斯30号(180米)、让·努维尔在巴塞罗那设计的阿格巴塔(145米),以及阿道夫·路斯未能建成的芝加哥论坛报大厦。

SOM在高层建筑的设计上颇有建树,享誉国际,而郑州绿地广场作为这座城市的第一高楼更是为SOM的优良传统锦上添花。SOM设计的建筑物美化了全球许多城市的天际线,其中包括芝加哥、纽约、北京、科威特城、密尔沃基以及迪拜,而迪拜的哈利法塔正是全世界最高的建筑物。郑州是河南省的省会,地处黄河南岸,常住人口860万。最近被经济学人智库列为中国13座新兴特大城市之一。

SOM是在国际设计竞赛中夺魁,才获得了这个项目的设计任务。因而郑州绿地广场在竣工之前,就已因其出色的设计被授予亚太地区房地产奖和芝加哥雅典娜博物馆颁发的设计奖。其创新的幕墙获得了素有科技界奥斯卡奖之称的R&D大奖的认可。

The Skidmore Owings & Merrill LLP (SOM)-designedZhengzhou Greenland Plaza has opened its doors to its office users. The circular 60-story tower takes its place as the tallest building in the central Chinese city. Located in the northeast portion of Zhengzhou, the 919-feet (280-meter) tall tower’s circular form is a response to the surrounding development’s shape that centers on a manmade lake. Zhengzhou Greenland Plaza punctuates the neighborhood and provides the area—and the city—with an iconic new landmark on the skyline.

The 2.59-million-square-feet (240,169-square-meters) building houses a mixed-use program of offices on its lower floors and a 416-key hotel above. Daylighting was a key driver of the building’s design. Sophisticated three- to five-story-tall light-gauge painted aluminum screens are configured at an outward cant that enhances interior daylighting through scientifically calculated reflections while protecting the all-glass exterior from solar gain. The screens provide multiple performance and aesthetic-related roles. The same outward cant that aids daylighting allows for a nuanced approach to artificial lighting, providing outboard locations for dramatic nighttime lighting of the building that make the tower a beacon.
The screens are located between one and two-meters from the building’s curtain wall—allowing window washing to occur behind the screens. Their visual porosity varies depending on a viewer’s location. When close to the building’s base, the tower appears to be primarily metal; from a distance, the panels are more open and the building’s glass nature is revealed. The rhythmic cant of the screens, combined with their decreasing size as they rise on the building, creates a dynamic movement that gives the building a fine-grained texture that relates to the building’s humanistic aspirations.

The form of the tower tapers slightly as it rises. “We conceived the building as a classical column,” SOM Design Director Ross Wimer says. “Its iconic image comes from this timeless form—adapted with cutting-edge, 21st century technologies to create a building that expresses our time.” These innovations include a heliostat that crowns the building and reflects daylight throughout the hotel atrium. “Like the solar screening, the heliostat is a scientifically-derived element that enhances the experience of daylight for the building’s users,” Wimer says. The device allows daylight to be reflected and focused into the atrium whose surfaces are finished to help drive light deep into the space. Computer-controlled dimmer switches modulate the light level-based on the illumination provided by the reflector, enabling the atrium to consume less energy and generate less heat throughout the year.

Wimer notes that, while not unheard of, circular skyscrapers remain somewhat unusual. Among the best known examples are Bertrand Goldberg’s Marina City (179 meters) in Chicago, Sir Norman Foster’s 30 St. Mary Axe (180 meters) in London, Jean Nouvel’s Torre Agbar (145 meters) in Barcelona, and Adolf Loos’ unbuilt scheme for the Chicago Tribune Tower.

Zhengzhou Greenland Plaza’s status as the tallest building in the city adds to SOM’s well-established legacy of tall buildings. SOM-designed buildings top the skylines of many cities worldwide, including Chicago, New York, Beijing, Kuwait City, Milwaukee, and Dubai—whose Burj Khalifa is the tallest structure in the world.? Zhengzhou is a prefecture-level city located on the south bank of the Yellow River and the capital of Henan province with 8.6 million residents. Greater Zhengzhou was recently named one of China’s 13 emerging megacities by the Economist Intelligence Unit.
SOM secured the commission for the project by winning an international competition. Prior to its completion, Zhengzhou Greenland Plaza has already been honored for its design by the Asia Pacific Property Awards and the Chicago Athenaeum. Its innovative curtain wall was recognized by Architect magazine’s R+D Awards program.





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