建筑设计：伦作.皮亚诺事务所
Architects:Renzo Piano Building Workshop
结构设计：澳为.阿勒普事务所
Structural Engineers:Ove Arup & Partners
This is one of eight stadiums constructed for the World Cup held in Italy in 1990.
The spectator seats, which form an oval, were built by assembling on the site 310 crescent shaped precast concrete beams. The upper spectator seats are divided into 26 enormous “petals”. The slits between the petals make the building seem lighter and point out circulation areas, facilitating entry and exit and assuring safety for spectators, Computer simulation assured a clear field of vision foe all seats. To protect the spectators from the hot sun and rain, a PTFE coated glass fiber roof membrane was designed in collaboration with Ove Arup &Partners.
The principal structural members of this roof are box-shaped beams cantilevered from the top of the upper spectator seats, and the secondary members consist of a truss on the front edge of the roof to support floodlights and a truss assembled from steel tubular arches and cables. The result assures the entire membrane surface will be under fension. To make certain that neither games nor spectators are disturbed by strong winds, wind tunnel experiments were undertaken at the Department of Aeronautical Engineering, Bristol University, using several of Srup’s computer programs(such as the Fablon Program and the Gerneral Structural Analysis Program),and design was carried out with great care.(Shunhi Ishida, Renzo Piano Building Workshop)
The roof consists of 26 large panels that individually cantilever from the concrete framework of the upper seating tiers. Between these are smaller panels which act as “structural springs” and close off the large slots between the upper seating tiers. The total are covered is 13,250m2.Although the elevation of the roof are constantly changing around the stadium, a degree of geometric repetition and systematization was achieved for the manufacture of steel framework.
The cantilever span varies from 27m to 14m and at the edges of each roof panel are curved tapered box beams fabricated from steel plate. These are in effect a direct continuation of the concrete framework of the upper tiers.
Linking the tips of these cantilevering box beams are a series if “U”-shaped trusses.these support the stadium floodlighting and provide an access route all the way round the whole roof. Each roof panel is further subdivided by 3 slender arch ribs which span between the back of the concrete stand and the “U”-shaped truss. To obtain extreme slenderness in these ribs their “in-plane” stiffness is enhanced by a fan of tie-rods emanating from each end.
Each roof panel in effect is a rib cage over which a prefabricated membrane panel can be stretched. Each membrane is clamped down continuously on all 4 sides and held in contact with the 3 internal ribs by the biaxial prestress if the membrane and the presence of an external hold down cable between ribs. These cables proevent the membrane lifting off the rib in the worst cases if wind loading .
The geometry of the membrane was defined as an equal biaxial stress field and each panel installed within 408kgf in both directions Ove Arup & Partners also produced the cutting patterns on behalf of the contractor.
体育场全景
观众席局部
该体育场建在巴里市，市为1990在意大利举行的世界杯塞尔建造的八个体育场之一。
整体呈椭圆形的观众席是通过现场组合310根新月状的预制钢筋混凝土梁而建成的。上层的观众席被划分成26块巨大的“花瓣”。“花瓣”间的空隙使建筑显得纤秀轻盈，同时留出了人员流动的空间，方便观众进场和退场，保证了观众的安全。计算机模拟试验确保所有座位的视线均不被遮挡。为使观众免受日晒雨淋，实际了一个带PTFE涂层的玻纤膜顶。
这个膜顶的主要支撑构件是从上层观众席顶部悬挑出来的箱形梁；次要构件有：膜顶前端的U形桁架、与箱形梁平行的弧形拱肋以及连接弧形拱肋与索的侧向稳定杆。结构体系保证整个膜面处于张拉状态。为避免强风对赛事或观众的造成干扰。设计前作了风洞试验，用几种阿勒普（Arup）的程序作了对比分析。
膜顶由26块各自从上层观众席的钢筋混凝土框架延伸出来的大膜构成。26个膜顶之间通过小块拱形膜连为一体，整个膜覆盖面极为13250m2。膜顶悬挑跨度介于14m-27m之间，这些结构实际上是上层观众席的钢筋混凝土框架的直接连续。虽然上层观众席的标高和膜顶的悬挑跨度在体育场的四周上有所变化，但对钢结构加工来说仍有某种某种的重复性和规律性可循。
连接悬臂箱形梁端部的一系列“U”形桁架之间纤细的弧形拱肋上。为使这些拱肋尽量细，它们的空间刚度通过两端间的一系列拉杆加以强化。膜的边缘均处理成曲线，以贴合钢质箱形梁 。
每块膜均在四边连续固定，并通过膜的双向张力和位于拱肋间的膜上索的下压力与下部的拱肋紧密贴合。这些膜上索的设置保证在最恶劣的风载下膜也不会将拱肋扯起。
膜被确定为几何意义上的双向等应力场，而每块膜安装是在两个方向上的应力均不超过4080N。
体育场全景
箱形悬臂拱形梁仰视
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