Study on Applicability of High Durability Friction Grip Joints with High Strength Countersunk Head Bolts for Steel Bridge Structures
Study on Applicability of High Durability Friction Grip Joints with High Strength Countersunk Head Bolts for Steel Bridge Structures
复制标题
高强度沉头螺栓高耐久性摩擦夹紧接头在钢桥结构中的适用性研究
DOI：
10.2749/222137813806474651
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
Takashi Yamaguchi
中科院分区：
文献类型：
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作者：
A. Tabata;H. Kanaji;Yoshihide Kurono;Takashi Yamaguchi
重点研究了一种能使连接板表面平整、防止因腐蚀而产生功能凹陷的高强度埋头螺栓摩擦夹头接头。首先进行了有限元分析，计算了双剪切连接沉头摩擦节点在不同沉头角度下的接触压力。其次，通过标准滑移试验，考虑板厚变化及底板和拼接板的屈服强度，比较了最佳沉头角节点与普通高强度螺栓节点的滑移强度。结果表明，沉头连接的滑移强度超过JSHB规定的设计滑移强度要求，其滑移系数比普通螺栓低10%左右。
Synopsis The authors focused on the high strength bolted friction grip joints with countersunk head bolts which can finish the surface of the connection plate flat smoothly and prevent from functional depression due to corrosion. Firstly we carried out Finite Element Analysis in order to evaluate the contact pressure of double shear connected friction joints with countersunk heads varying the angle of countersunk head. Secondly, we have compared the slip strength of the joints which has the optimum countersunk head angle with that of the joint with the normal high strength bolt through the standard slippage test considering variation of plate thickness and the yield strength of the base and splice plates. As a result, it has concluded that the slip strength of the joints with countersunk heads exceeds the required design slip strength which has specified in JSHB and that its slip coefficients is about 10% lower than that with normal head bolts.