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原文传递 Detour Drainage Structure Design Procedure. Final rept.

题名：	Detour Drainage Structure Design Procedure. Final rept.
作者：	DE DIOS, R.; MOLINAS, A.; MOMMANDI, A.
关键词：	Drainage-; Highway-design; *Culverts-.;Pipes-Tubes; Bridges-Structures; Highway-construction; Highway-maintenance; Cost-analysis; Construction-materials; Risk-factors; Hydrology-; Colorado-; Environmental-impacts.
摘要：	In this research effort, literature surveys and reviews of the current methodologies employed by various state Departments of Transportation (DOTs) were conducted. Also, questionnaires were sent to different personnel involved in the design and construction of drainage structures for the Colorado Department of Transportation (CDOT), the Federal Highway Administration (FHWA), and other state DOTs. Two detour drainage design approaches that use risk-cost analysis and risk factors analysis were developed and presented in this report. The risk-cost analysis approach which is defined in this study as the Nonlinear Risk-Cost Analysis (NRCA) designs the detour drainage structure by optimizing risks and costs using complex nonlinear functional relationships to establish the return period to be used in sizing the structure. The risk factors analysis approach which in this document is called the Rational Detour Drainage Structure Design (RDDSD) determines the size of the detour drainage structure by selecting a return period that considers a variety of risk factors. Both approaches compute the most cost-effective design discharge using monthly flow distribution data.
报告类型：	科技报告