上盖开发混合结构钢柱-钢筋混凝土柱连接节点研究

Research on Steel-reinforced Concrete Column Joint in Steel-concrete Hybrid Structure of Cover Development

车辆段上盖开发中利用上钢下混凝土混合结构可有效减小结构自重从而减小结构地震作用,使结构更加经济合理。但此种结构的连接节点尚无成熟的规范图集供参考,尚待研究后方可应用于实际工程。本文对北京地铁张家湾车辆段上钢下混凝土混合结构的钢柱与钢筋混凝土柱的连接节点进行了研究,并对其在正常使用工况和地震工况的受力性能进行了数值模拟。通过分析表明本文所研究的钢柱与钢筋混凝土柱连接节点受力合理、性能可靠。可为类似结构的此类节点设计提供参考。

The hybrid structure,with its upper part made of steel and the lower part made of concrete,ef-fectively reduces the structure s weight and seismic impact.This makes it more economical and practical com-pared to ordinary RC or hybrid structures.However,research on the joints of such structures is still in its early stages,and there are no standardized guidelines to follow.Therefore,a thorough study of these joints is neces-sary before their application in practical engineering.This paper presented a study on the steel-reinforced con-crete column joint of the Zhangjiawan Rolling Stock Depot in Beijing,which features a steel upper structure and a concrete lower structure.Numerical simulations of the joint were conducted under persistent design situations and seismic design situations.The results demonstrated the joint s overall reliability and suitability for the con-struction of the Zhangjiawan Rolling Stock Depot in Beijing.Furthermore,this study provided valuable insights for the design of similar joints in comparable structures.