摘要
针对纤维增强复合材料(FRP)型材在土建交通领域应用中出现的接头效率低、质量无法保证等缺陷,提出了一种新型FRP型材连接节点:绑扎胶结复合连接节点。通过对该种新型连接节点进行试验,并设置了螺栓节点、胶结节点等对比试验,证明了绑扎胶结复合连接节点具有很高的接头效率,其承载力是螺栓连接节点的3.8倍、胶结连接节点的3.5倍。总结对比了各节点破坏形式,发现传统连接节点发生节点区脆性破坏,而绑扎胶结复合连接节点发生母材破坏,且破坏有一定的延性。根据试验中得到的荷载-位移曲线,对比分析了3种连接节点的刚度、延性等异同点。根据试验现象及结果分析了绑扎胶结复合连接节点的工作机理。
Aimed at the low joint efficiency arising from the unidirectional pultruded fiber composites application to civil and transportation field, it was put forward a new type of joint of FRP composite： binding-adhesive joints. Experiments were conducted on three types of joints, ine｜uding binding-adhesive joints, bolt joints and adhesive joints. The experimental results proved that binding-adhesive joints had a high joint efficiency factor; the bearing capacity was 3.8 times of the bolt joints, 3.5 times of the adhesive joints. Based on the load-displacement curve obtained from experiments, a comparative analysis of stiffness and ductility of the three types of joints was made. According to the experimental phenomena and results, the analysis of the working mechanism of binding-adhesive joints was made.
出处
《工业建筑》
CSCD
北大核心
2013年第6期32-35,共4页
Industrial Construction
基金
国家高技术研究发展计划(863计划)(2012AA03A204)
中日国际合作项目(2012DFG20510)
国家自然科学基金(51078077)
关键词
FRP拉挤型材
新型连接节点
荷载-位移曲线
工作机理
unidirectional puhruded FRP composites
new type of joint
load-displacement curve
workingmechanism
