ANALYTICAL MODEL OF COVER-PLATE RETROFITTED STEEL MOMENT CONNECTION WITH INITIAL LOADING
ANALYTICAL MODEL OF COVER-PLATE RETROFITTED STEEL MOMENT CONNECTION WITH INITIAL LOADING
复制标题
DOI：
--
复制
发表时间：
2007
期刊：
影响因子：
--
通讯作者：
Wang Yuan-qing
中科院分区：
文献类型：
--
作者：
Wang Yuan-qing
国外的试验研究表明，盖板加固的钢节点具有良好的承载能力，加固区域以外的梁上形成塑性铰破坏模式，但对初始荷载作用下的连接修复研究较少，根据有限元分析得到的应力分布，在此基础上，提出了一个简化的力学模型，并对修复后的连接在初始荷载作用下的力学行为进行了研究，通过简化模型，得到了初始荷载和附加荷载在盖板与原连接之间的分布规律，并给出了初始荷载为整体节点不再适用，传统的梁理论也不再适用，盖板长度对盖板与原节点之间的弯矩分配影响不大，但盖板厚度是主要的设计参数。
Experimental results abroad indicated that the cover-plate rehabilitated steel moment connection exhibits good loading capacity,with the failure mode of the plastic hinge formed on the beam beyond the reinforced region.However,few studies have been carried out on the rehabilitation of the connection with initial loading.Based on the stress distribution obtained by the finite element analysis,some assumptions are made and a mechanical model is proposed.The mechanical behaviors of the rehabilitated connection with initial loading have been investigated.By the simplified model,the distribution pattern of the initial loads and the additional loads between the cover plates and the original connection is obtained.The design of the rehabilitated connection with initial loading as integrated joint is no longer applicable;neither is the traditional beam theory.The length of the cover plate imposes less influence on the moment distribution between the cover plates and the original connection,but the thickness of the cover plate is the main design parameter.