Further Studies Necessary for Adoption by Steel Industry of Slotted Bolted Connections

加州大学伯克利分校(UCB)的一项为期三年的试验研究导致了开槽螺栓连接(SBC)的发展，这种连接在循环直线荷载下表现出几乎理想的弹塑性行为。这种安排提供了一种具有成本效益、可预测和可靠的消能工，其可能的应用超出了最初计划的抗震设计和改造领域。分析研究表明，安装SBCS的结构在强烈地震激励下表现出很好的性能。里士满设施的三层框架的振动台试验准备工作目前正在进行中。预计这些试验的结果将进一步证实SBCS在减轻地震灾害方面的重要作用。然而，人们认为，为了使这一项目取得全面成果，即确保工业对SBCS的接受和应用，必须对螺栓直径不同于1/2英寸直径的SBCS进行一些额外的试验，这些试验的结果已经存在，并且必须对其他设计参数进行变化。在本项目中，将在现有的试验设备上对不同螺栓尺寸、螺栓间距和连接板尺寸的附加节点进行试验，以获得更多具有实用价值的信息，以便在钢结构中使用这些节点。

An experimental study at University of California, Berkeley (UCB), spanning three years, has led to the development of a Slotted Bolted Connection (SBC), which under cyclic rectilinear loading exhibits almost ideal elastic-perfectly- plastic behavior. This arrangement has provided a cost effective, predictable and reliable energy dissipator with possible applications beyond the originally intended area of seismic design and retrofit. Analytical studies have shown that structures equipped with SBCs perform very well under violent earthquake excitations. Preparations for shake table tests of a three story frame at Richmond facility are currently in progress. It is expected that the results of these tests will further affirm the significant utility of SBCs in earthquake hazard mitigation. However, it is felt that in order to bring this project to full fruition, that is to attain confident acceptance and application by industry of SBCs, a number of additional tests of SBCs with bolt sizes other than the 1/2 inch diameter for which results already exist, and variations in other design parameters must be conducted. In this project, additional connections with different bolt sized, bolt spacing and connection plate sized will be tested on the existing test facility to obtain more information of practical importance for utilization of these connections in steel structures.