钢桁架与钢支撑桁架混凝土筒体连接节点试验研究

Experimental research on the connection node of the steel truss and steel support truss concrete cylinder

大连国际会议中心结构设计中,核心筒墙体与钢平台桁架弦杆的连接是关键技术之一。实际工程中采用了墙体内藏钢桁架与钢平台桁架梁弦杆焊接后浇筑混凝土形成连接节点的方式。为验证设计采用的墙体内钢桁架平面外拉结平台桁架的锚固能力和构造的合理性,进行了4个桁架梁弦杆与核心筒墙体连接节点的锚固性能试验。试验证明墙体内钢桁架与钢平台桁架弦杆的连接性能是可靠的。

Chord connection between the steel platform and the core tube wall is one of the key technologies in the structural design of Dalian International Conference Center.In the actual engineering,the connection is used by the way of the wall with concealed steel truss and steel truss spar platform chord welding before placing concrete.In order to verify the capacity and the structural rationality of the mentioned chord connection,four anchoring performance tests were conducted for the connection node.Experiments show that the chord connecting performance is reliable.