摘要
通过在低周往复荷载作用下对5个不同轴压比和核心区配箍率的高强陶粒混凝土中节点和1个普通混凝土中节点进行抗震性能试验研究,对不同核心区配箍率及不同轴压比情况下的高强陶粒混凝土节点的破坏形态、滞回规律、骨架曲线特征、延性、耗能以及强度退化情况等问题进行研究。试验结果表明:高强陶粒混凝土节点的破坏过程与普通混凝土节点破坏过程相似;适当增加柱子的轴压比及节点核心区配箍率对高强陶粒混凝土框架节点的延性、耗能及强度退化等抗震性能有利;高强陶粒混凝土试件可以应用在一些有抗震设防要求的地区。本文为轻骨料混凝土的工程应用提供科学依据。
In this research,the low-cycle repeated loading tests are carried out for five high-strength ceramic concrete beam-column interlayer joints with different axial compression ratios and stirrup ratio and one common concrete beam-column interlayer joint. The joint failure modes,hysteresis,skeleton characteristics,ductility,energy dissipation behavior and the deterioration of intensity of high-strength ceramic concrete joints with different axial compression ratios and stirrup ratio are analyzed. The results show that failure process of high-strength ceramic concrete frame joints is similar to the common ones. It is found that the increase of axial compression ratio and stirrup ratio,to a certain degree,would do good to the seismic behaviors such as ductility,energy dissipation behavior and the deterioration of intensity of high-strength ceramic concrete frame joint. The high-strength ceramic concrete can be well applied in the earthquake fortification zone. It provides scientific basis for lightweight aggregate concrete.
出处
《建筑科学》
CSCD
北大核心
2016年第1期81-87,共7页
Building Science
基金
泉州市科技计划项目(2013Z30)
福建省自然科学基金(2012J01220)
华侨大学科研基金资助项目
关键词
高强陶粒混凝土
框架节点
配箍率
轴压比
抗震性能
延性
high-strength ceramic concrete
frame joint
stirrup ratio
axial compression ratio
seismic behavior
ductility
