摘要
以某实际工程为背景,对3个相同的装配式节点试件进行偏心轴向加载试验,分析了节点的承载力情况,研究了节点各肢在面内压弯、面外压弯和面内外同时压弯三种加载情况下的弯曲刚度。试验结果表明,大多数情况下,装配式节点各肢的弯曲刚度随所施加荷载的增加而增大;单独的面内、面外压弯且为双肢加载时,加载至0.4倍和2倍设计荷载时的连接件名义弯曲刚度分别约为加载至设计荷载时的0.7倍和1.3倍。试验节点刚度性能具有显著离散性:单独的面内、面外压弯且为单肢加载时,先加载的A肢连接件弯曲刚度约为后加载B肢的1.85倍;面内压弯时,连接件单肢加载情况下的弯曲刚度约为双肢加载情况下的0.46~6.99倍。
Taking a practical project as the background,an eccentric axial loading test was carried out on 3 identical fabricated joints.The bearing capacities of the jointswere analyzed.The bending stiffness of the jointswas studiedunder three loading conditions,including in-plane bending,out-of-plane bending and simultaneous in-plane and out-of-plane bending.It is shown that the bending stiffness of the connection increases with the adding of the loadinmostcases.With double limbs loaded,when loaded to 0.4 times and 2 times of the design load,thenominalin-plane and out-of-planebending stiffness of the connection is about 0.7 times and 1.3 timesas much as that of the design load, respectively.The stiffness of the connection is obviously discrete.With single limb loaded,the in-plane and out-of-plane bending stiffness of the first loaded A-limb is about 1.85 times as much as that of the after loaded B-limb.Thein-plane bending stiffness of the connection in the condition of single limb loading is about 0.46~6.99 times that of the double limbs loading.
作者
李岳
戴晓欣
孙飞飞
王建
LI Yue;DAI Xiaoxin;SUN Feifei;WANG Jian(Department of Structural Engineering,Tongji University,Shanghai 200092,China;South Base,China Mobile,Guangzhou 510640,China;East China Architectural Design & Research Institute Co.,Ltd.,Shanghai 200002,China)
出处
《结构工程师》
北大核心
2019年第3期202-209,共8页
Structural Engineers
关键词
钢结构
承压型螺栓连接
装配式节点
刚度
steel structure
bearing-type bolt connection
fabricated connection
stiffness
