Seismic Performance of SPCSP Culverts

点击翻译按钮获取中文摘要

Structural plate corrugated steel plate (SPCSP) culverts have been used successfully in a wide range ofapplications throughout Canada and around the world. Large span SPCSP culverts are commonly constructedby the cut and cover method and have a significant benefit of being used as a short span bridge. These flexiblestructures resist the loadings they are subjected to through the interaction between the corrugated steel platesand the surrounding soil fill. Seismic loading has a considerable effect on the deformations and internal forcesof large span culverts. However, no comprehensive study of the seismic performance of these structures hasbeen found in the literature. Available design codes such as the Canadian Highway Bridge Design Code(CHBDC) and the American Association of State Highway and Transportation Officials (AASHTO), havelimited information on the seismic design of large span SPCSP culverts. Armtec has identified a significantopportunity in using large span SPCSP culverts as bridging structures. Employing this cost-effective solutionwould open new markets to the company and allow them to provide broader offerings to their clients.However, many areas in Western Canada and in Quebec are subjected to creditable seismicity and thecompany's research has revealed that the simplified seismic provisions of the current design codes do notprovide sufficient guidelines on the design in such areas. Thus, the seismic performance of large span SPCSPculverts needs to be investigated and clear guidelines on their analysis and design should be developed. Byresolving the design constraints associated with this technology, Armtec will have the necessary materials fortheir engineers to justify offering large span SPCSP culverts as an alternative solution in many bridgingapplications. The proposed research is anticipated to advance the state-of-the-art in the seismic analysis anddesign of large span SPCSP culverts. Resolving the design constraints associated with these structures willallow Armtec to open new markets in seismically active regions and offer cost effective solutions to theircustomers.