钢管混凝土柱新型节点受力性能试验研究

Experiment research on behavior of a new type joint of concrete filled steel tube column

钢筋混凝土梁与钢管混凝土柱节点受力性能是影响钢管混凝土柱结构应用最关键的问题，本文针对某电信枢纽中心的工程实践，提出了穿心牛腿＋环梁的新型节点构造形式，并依据相似原理进行了静载及反复荷载下节点模型试验研究．试验研究表明，该节点传力路线明确、合理，受力性能较好。根据试验结果改进的新型节点已用于工程实践．

Mechanic behavior of joint of RC beam and concrete filled steel tube column is a critical problem in application of concrete filled steel tube structures. A new type of conrete filled steel tube concrete joint, put forward to solve the difficulty in application of high-raised buildings in the thesis, is tested and researched under static and rapeated load. The tested result shows that the new type joint is working well and reliable.