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

加州大学伯克利分校（UCB）的一项为期三年的实验研究导致了开槽螺栓连接（SBC）的发展，该连接在循环直线加载下表现出几乎理想的弹塑性性能。这种布置提供了一种成本效益高、可预测且可靠的消能器，其应用范围超出了最初的抗震设计和改造范围。分析研究表明，结构在强震作用下具有良好的性能。目前正在里士满工厂进行三层框架振动台试验的准备工作。预计这些试验的结果将进一步证实sbc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圆满成果，即使sbc行业有信心地接受和应用，还需要对sbc进行一些螺栓尺寸超出1/2英寸直径的额外试验，这些试验已经有了结果。其他设计参数的变化也必须进行。在本项目中，将在现有的试验设施上对不同螺栓尺寸、螺栓间距和连接板尺寸的附加连接进行试验，以获得更多对钢结构中使用这些连接具有实际重要性的信息。

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.