Experiments on concrete filled and reinforced tubular K-joints of truss girder
Experiments on concrete filled and reinforced tubular K-joints of truss girder
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DOI：
10.1016/s0143-974x(03)00136-6
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发表时间：
2004-03-01
影响因子：
4.1
通讯作者：
Mitsuki, K
中科院分区：
文献类型：
--
作者：
Sakai, Y;Hosaka, T;Mitsuki, K
本文介绍了桁架梁K型钢管混凝土加筋节点的极限承载力和疲劳强度的试验研究。该荷载工况是铁路桁架弦杆与斜杆连接处的主要活载模式，其平衡取决于斜杆的轴向反力。采用六种不同类型的试件进行静力试验，包括非填充混凝土、填充混凝土和钢筋。静力试验结果表明，填充混凝土试件的极限承载力约为未填充混凝土试件的2倍。然而，为了减少接头焊趾处的局部应力，需要进行加固。因此，从静态试验样本中选择了一个疲劳样本，并从制造设备的角度设计了两个疲劳样本。对于弦杆与斜杆的节点，宜采用中心线相交的搭接节点试件和带节点板的搭接节点试件。(C)2003 Elsevier Ltd.保留所有权利。
This paper describes an experimental study on the ultimate strength and fatigue strength of concrete filled and additionally reinforced tubular K-joint of truss girder. The loading condition, which was balanced depending on axial reaction load on diagonal members, represented the main live load pattern on the joints of a chord member and diagonal members on a railway truss. Six different types of specimens of the static test, composed of concrete non-filled, concrete filled and reinforcement, were used. The static test results indicated that the ultimate load resistance of the concrete filled specimen was about twice that of the concrete non-filled specimen. However, to reduce localized stress at the weld toe of the joint, reinforcement was needed. Therefore, one fatigue specimen was selected from static test specimens and two fatigue specimens were designed from the viewpoint of fabrication facility. The lapped joint specimen whose centerlines of members meet at one point and the specimen with the gusset are appropriate for the joint of the chord and the diagonals. (C) 2003 Elsevier Ltd. All rights reserved.