ASCE SEI Met Section Spring Seminar 2022: High Load Jacking Frames for Pin and Hanger Replacement
Last night, Qi Ye, Principal of CHI, gave a presentation on “High Load Jacking Frames for Pin and Hanger Replacement at the Robert Moses Causeway” at the ASCE SEI Met Section Spring Seminar 2022. The main truss spans of the Robert Moses Causeway in Suffolk County, New York were completed in 1964, and consist of two (2) 233’ anchor spans, two (2) 66’ cantilever spans, and one (1) 466’ suspended span. CHI developed a unique jacking/support system to safely unload the existing pins and hangers for their replacement. A high-accuracy 3D AutoCAD model was created by the design team, and used in the streamlined work process of refined finite element analysis, design drawing, and shop drawings, allowing improved efficiency and quality in both design and construction.
The article of “High Load Jacking Frames for Pin and Hanger Replacement at the Robert Moses Causeway” was also published in Transportation Research Record: Journal of the Transportation Research Board (2020).