摘要
根据某实际工程,设计1∶2缩尺的纵向和横向两种组合墙体试件进行低周反复荷载试验。针对后加混凝土构件-砌体组合墙体的承载力、延性、滞回特性、耗能能力及破坏模式、混凝土构件的应变和钢筋的应变发展过程等进行研究。结果表明:"拉结(剪切)钢筋+植筋"的连接节点具有可靠的连接性能,可以保证既有砌体结构与后加混凝土构件的协同工作;后加混凝土-砌体组合墙体具有更高的承载力及变形能力;通过等效黏滞阻尼系数对比分析可知,后加混凝土墙体提高了砌体墙的耗能能力;提出了后加混凝土-砌体组合墙体受剪承载力计算式,且与试验结果吻合较好。
Based on practical project,the lengthwise and the cross composite walls with scale of 1∶ 2 were constructed and subjected to the low cycle reversed loading test. The ultimate bearing capacity,ductility,hysteresis characteristic,stiffness degradation,dissipation capacity,damage pattern and the strain change laws of post-installed reinforced concrete member and steel bar were analyzed. The test results show that the connecting joint consisting of tie bars and embedded bars has reliable connection capacity. The composite wall has better load bearing capacity and deformation capacity than the masonry wall. According to the analysis results of equivalent viscous damping coefficients,the dissipation capacity of masonry wall is improved by post-installed concrete wall. In the end,the formula of shear capacity of composite wall is presented. And the calculating results agree well with test results.
出处
《建筑结构学报》
EI
CAS
CSCD
北大核心
2015年第2期51-60,共10页
Journal of Building Structures
关键词
后加混凝土-砌体组合墙体
拟静力试验
承载力
延性
滞回特性
耗能能力
破坏模式
post installed reinforced concrete-masonry composite wall
quasi-static test
ultimate bearing capacity
ductility
hysteretic characteristic
dissipation capacity
damage pattern
