详情

Economic Feasibility and Increased Sustainability of Short Span Arch Culverts

项目名称：	Economic Feasibility and Increased Sustainability of Short Span Arch Culverts
摘要：	Currently, standard box-section concrete culverts are the main type of structure used for large span culverts (span 15 to 30 feet). Their construction methods may require stream mitigation and their square/rectangular cross section area negatively impacts the stream flow which can result in partial clogging due to debris accumulation, preventing the passage of aquatic organisms. This research studies the possibility of using short span arch culverts in replacement of box-culverts based on life cycle cost analysis. Short span arches are available in different geometrical shapes (span to depth ratios) which match different topographies and minimize the required earth work. The capability of arch-shaped structure to transfer internal forces through compression, and not flexure, improves the structural efficiency of the culvert. Finally, the bottomless arch shape results in much lower obstructions to any stream flow. This results in minimal accumulation of sediment and debris, which minimizes maintenance cost for the structure during its life span and also maintains the unrestricted movement of aquatic organisms.
状态：	Completed
资金：	179461.00
资助组织：	Arkansas Department of Transportation
项目负责人：	McKenney, Christopher
执行机构：	University of Arkansas, Little Rock
开始时间：	20130701
实际结束时间：	20150630
主题领域：	Bridges and other structures；Highways；Hydraulics and Hydrology；I15: Environment