常州体育会展中心体育场结构设计

Structural design of the stadium of Changzhou Sports and Exhibition Center

常州体育会展中心体育场下部采用钢筋混凝土框架结构、罩篷采用平面管桁架结构。结构设计中对下部超长混凝土结构采用预应力技术控制温度应力;对屋盖大悬挑平面管桁架进行了刚性模型的风洞试验以确定风载计算参数;针对大悬挑平面管桁架稳定性相对较差的特点,利用与上弦杆刚接的矩管檩条、上下弦间的垂直支撑及布置于下弦的平行钢丝拉索,使屋盖的整体稳定性得到保证。屋盖与下部结构连接支座采用了销轴支座,以适应平面桁架的受力变形要求。支座及连接复杂处的拉索节点采用了铸钢节点。该工程建成后经受住了2008年罕见雪灾的考验,主体结构完好。

Reinforced concrete frame and steel canopy composed of tube trusses were used in the stadium of Changzhou Sports and Exhibition Center.Pre-stressed concrete was used to control temperature stress of super-long reinforced concrete;wind tunnel test was carried out to determine parameters for wind effects calculation of the cantilever canopy;rectangular purling on up-chord,vertical bracings and parallel cables on lower-chord were used to compensate the instability of the cantilever tube trusses which composed of the canopy;pinged connecters were used as the supporters of the canopy to satisfy deformation requirements of plan tube trusses.Cast-steel nodes were employed for nodes connected with cables and complex supporters.The stadium experienced the gigantic snow in 2008 and the main structure remains intact.