The SidePlate^TM Moment Connection System: A Design Breakthrough Eliminating Recognised Vulnerabilities in Steel Moment-Resisting Frame Connections

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• 作者：Houghton ; David L.
• 关键词：SidePlate ; side plate ; fillet weld ; column tree ; Houghton ; MHP ; earthquake ; blast ; progressive collapse ; wind
• 刊名：Journal of Constructional Steel Research
• 出版年：1998
• 出版时间：April 6, 1998
• 年：1998
• 卷：46
• 期：1-3
• 页码：260-261
• 全文大小：82.2 K

文摘

SidePlate^TM is a patented moment connection technology that is developed for both new and retrofit construction. Implemented design environments include earthquake, extreme wind, explosive threat, and prevention of progressive collapse. Versatile framing options include uniaxial and dual strong axis moment connection applications, as well as dual systems used in specialty structures that combine rigidly-connected chevron bracing and moment-connected beams within the same connection. SidePlate's^TM trademark geometry eliminates recognised uncertainties that are intrinsic with the use of a T-joint complete-penetration groove weld to connect beam flange directly to column flange. The significance of these uncertainties is notably characterized by the unprecedented reported financial losses that resulted from the January 17, 1994 Northridge earthquake (magnitude 6.7). SidePlate^TM uses all shop fillet-welded fabrication, ductile weld configurations, and the column tree/link beam erection sequence for increased quality control and cost efficiency. The unique geometry, simple design configuration, and proven construction methods that characterize the attributes of the SidePlate^TM connection system collectively eliminate vulnerability to premature brittle fracture by their definition. Cyclic testing of SidePlate^TM includes prototype uniaxial test specimens completed in January, 1995 and the first-ever dual strong-axis test specimen completed in May, 1996. Connection welds, plates and column in all prototype uniaxial specimens remain undamaged as predicted by corroborative analyses, without regard to fracture-resistant electrodes, while permitting the beam to develop its full strain-hardened plastic flexural strength. The dual strong axis test demonstrates that SidePlate's^TM connection technology can competently resist the orthogonal effects of earthquake forces. All test specimens exhibited the predicted behavior and strength of welds and connecting plates, sustaining multiple inelastic cyclic rotations and fully satisfying current USA moment connection qualification Acceptance Criteria. Linkage between the results of cyclic full-scale testing, corroborative independent non-linear analyses, and detailed parametric studies provides competent system qualification for extrapolation of the design methodology to member sizes other than those tested. Connection ductility and robustness are achieved by using simplified load paths, giving due design consideration to the direction of applied load on a weld, and through the elimination of reliance on recognized uncertain material properties. The result is a cost-efficient moment connection that performs reliably with repeatable ductility.