新型角钢组台网架体系由中国建筑科学研究院结构所开发研制的角钢组合网架由四角锥单体锥组成，其上弦为角钢，腹杆为圆钢管，上弦通过普通螺栓相连。下弦为通长扁钢，在节点处由高强螺栓将节点盒与下弦杆相连。在试制过程中进行了组合网架的整体试验和单锥体极限承载力试... New Angle Steel Group Grid System The angle steel composite grid structure developed by the Chinese Academy of Building Research has a quadrangular cone single cone. The upper chord is angle steel, and the abdominal rod is a round steel tube. The upper chord is connected by ordinary bolts. The lower chord is a long flat steel. The node box is connected to the lower chord by a high-strength bolt at the node. In the trial production process, the overall test of the combined grid and the single-cone ultimate load test were carried out.