Seismic Performance of SPCSP Culverts

结构板波纹钢板涵洞（SPCSP）已经成功地在加拿大和世界各地广泛应用。大跨度spsp涵洞通常采用开挖覆盖法施工，作为小跨度桥梁具有显著的优势。这些柔性结构通过波纹钢板和周围填土之间的相互作用来抵抗荷载。地震荷载对大跨度涵洞的变形和内力有相当大的影响。然而，文献中还没有对这些结构的抗震性能进行全面的研究。现有的设计规范，如加拿大公路桥梁设计规范（CHBDC）和美国国家公路和交通官员协会（AASHTO），对大跨度spsp涵洞的抗震设计信息有限。Armtec已经确定了使用大跨度spsp涵洞作为桥梁结构的重要机会。采用这种具有成本效益的解决方案将为公司打开新的市场，并使他们能够为客户提供更广泛的产品。然而，加拿大西部和魁北克省的许多地区都受到地震活动的影响，该公司的研究表明，当前设计规范的简化地震规定并没有为这些地区的设计提供足够的指导。因此，需要对大跨度预应力混凝土涵洞的抗震性能进行研究，并制定明确的分析和设计准则。通过解决与该技术相关的设计限制，Armtec将为其工程师提供必要的材料，以证明在许多桥梁应用中提供大跨度spsp涵洞作为替代解决方案是合理的。预计本研究将推动大跨度spsp涵洞抗震分析和设计的发展。解决与这些结构相关的设计限制将使Armtec能够在地震活跃地区开辟新市场，并为客户提供具有成本效益的解决方案。

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.