广州市翠湖山庄工程钢管混凝土柱节点足尺静载试验研究

A STATIC TEST ON JOINT BETWEEN STCC COLUMN AND ENCIRCLE-BEAM

广州市翠湖山庄工程采用了新型钢管混凝土环梁节点 ,并进行了足尺构件静载试验。文中详细介绍试验方案的设计、试件的制作、加荷方式、试件的裂缝发展情况及破坏形态等试验结果。足尺试验研究表明 ,合适的设计可以保证新型钢管混凝土环梁节点有足够的抗弯、抗剪能力及良好的延性 ,易于实现“强柱弱梁”

A full?scale static test on a new type of joint which connects steel tube confined concreta column(STCC) and reinforced concerete beam is studied in this paper.The joint,called ring beam joint,has been used in the project of Cui?hu Villa in Guangzhou.The design of experiment scheme,preparation of specimen,loading methods,relation between load and deflec tion,development of cracks in specimen,and the failure behavior are illustrated in detail.The test results are shown that bearing capacity of joint is 2 and 2 65 times of normal designed value for bending moment and shear force respectively.No crack in the ring beam can be found by naked eye under service load.What is more,the joint is good in ductility and the joint is more strong than the beam.So it can be predicated that the joint will be behave well during earthquake.