Study on slip behavior of high strength bolted connections based on tribology theory

本文针对钢结构中常用的高强度螺栓连接，基于摩擦学理论，通过滑动试验和接触面状态的测量，对改变接触面状态处理后的高强度螺栓连接的滑动系数进行了评估。为此，我们进行了两种滑移试验，一种是用小尺寸试件来详细测量表面状况，另一种是用真实螺栓连接试件来考虑真实的滑移行为。试验结果表明，在喷丸处理的情况下，滑移系数可以通过算术平均粗糙度参数Ra准确地估计，与以往的研究结果相同。而在用其它材料进行表面处理的情况下，滑移系数则取决于各种材料的性质。

This research focused on high strength bolted connections used steel structures frequently, and carried out slip tests and measurements of condition of contact surface in order to evaluate the slip coefficients of these connections changed treatment of surface condition based on tribology theory. Therefore we executed the two kinds of slip test which used small size specimens to measure the surface condition in detail and used realbolted connection specimens to consider the real slip behavior. As the results of these tests, in the case of shotblast treatment, the slip coefficient can accurately estimate by the arithmetic average roughness parameter; Ra in the same result of past researches. And in the case of the surface treatment by other material, slip coefficients dependon the each material properties.