收稿日期: 2016-03-18
修回日期: 2016-06-21
网络出版日期: 2016-11-01
基金资助
国家自然科学基金青年科学基金资助项目(50808084);亚热带建筑科学国家重点实验室开放课题(2015ZB29)
Experimental Investigation into Castellated Composite Beam-Compound Spiral Hoop Reinforced Concrete Column Connection
Received date: 2016-03-18
Revised date: 2016-06-21
Online published: 2016-11-01
Supported by
Supported by the National Natural Science Foundation of China for Young Scientists(50808084)
马宏伟 林朗 刘和星 . 蜂窝组合梁-复合螺旋箍混凝土柱节点试验[J]. 华南理工大学学报(自然科学版), 2016 , 44(12) : 120 -127 . DOI: 10.3969/j.issn.1000-565X.2016.12.017
In order to popularize the structure form consisting of the compostite beam and the compound spiral hoop-reinforced concrete (CSHRC) column,a beam-through-type connection of the castellated composite beam- CSHRC column is proposed.In the core zone of the connection,the U-shaped stirrups cross the beam web,while the short steel plate hoops of column are set at the beam top and the bottom flanges position.Through the low-cycle reversed loading experiments of two 1/2-scaled castellated composite beam-CSHRC column connection specimens and a simulating core zone specimen,it is found that the local buckling failure of the steel beam occurs near the column face for the specimen with an expansion ratio of 1. 2 while near the column face and the web opening for the specimen with an expansion ratio of 1. 3.Moreover,a formula of the shear capacity of the connection core zone is put forward,and the calculating values based on the formula accord well with the experimental ones.The two 1/2- scaled connection subassemblies both have an ideal spindle shaped load-drift hysteresis curve,and their ductility factors and equivalent viscous damping coefficients are respectively 4. 55,4. 30 and 0. 46,0. 38,which means that the proposed connection has a good anti-seismic behavior.
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