“生命之环”结构设计关键技术

"生命之环"采用空间钢桁架+钢筋混凝土基座的混合结构体系,上部结构正立面投影为竖立在地面的变截面环,环内外轮廓为非同心圆,内圆直径150m,底部相切于人工湖面,外圆直径约170m,横截面为顶点朝外的正三角形。整体建筑高度约为160m,是目前世界上已建成最高的同类型构筑物。结构形体确定、抗风设计、多参数化空间钢桁架设计、施工模拟计算、钢桁架与混凝土基座连接支座构造以及大直径圆钢管相贯焊节点设计等均为结构设计的重点和难点。为了检验设计的可靠性,同时加强此类复杂工程的施工监控,在施工和使用过程进行了结构健康监测。

Key techniques for structural design of the circle of life

The combined spacial steel truss with reinforced concrete base is adopted in the structural design of the circle of life.The shape of the front elevation of the building is a variable cross-section circle formed by two non concentric circles.The inner circle has a diameter of 150 meters,which circumscribe the lake at the foot,and the diameter of the outer one is 170 meters.The sections of the building are triangles with the angles toward outside.The circle of life is about 160 meters high,which is the highest building of this type in the world.There are several emphases and difficulties of the structural design,including form finding,wind resistant design,multi-parameters special steel truss design,construction simulating calculation,detail design for the joint of steel truss to concrete base,mega tube multi-planar intersections joint design,etc.The structural health monitoring is carried out to validate the reliability of the structural design and monitor the site work.