福田站钢管混凝土柱-型钢混凝土梁节点研究

Research on the joint between concrete-filled steel tubular column and steel reinforced concrete beam of Futian Railway Station

福田站采用钢管混凝土柱和纵横型钢混凝土梁的结构体系,该体系能满足大跨度地下结构的承载力要求。对钢管混凝土柱-型钢混凝土梁节点进行静载试验,介绍了节点试验方案,总结了试件裂缝发展情况及破坏形态等规律。并对梁柱节点进行了有限元数值模拟分析。对比静载试验结果和数值分析结果,钢管混凝土柱-型钢混凝土梁节点的荷载-变形、荷载-应变曲线与数值模拟结果比较接近,能应用于类似地下结构中。

Structural system of concrete-filled steel tubular column and steel reinforced concrete beam is used in Futian Railway Station to support the large span underground structure.Static load test of the joint between concrete-filled steel tubular column and steel reinforced concrete beam was carried out.The test scheme was introduced and the joint crack and failure mode were summarized.The joint was analyzed by the finite element method.It is proved that the test results of load-deformation and load-strain are close to the results of the numerical simulation by comparative analysis.The structural system can be applied in the similar underground structure.