United States Department of Transportation
ROSA P serves as an archival repository of USDOT-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by USDOT or funded partners.
As a repository, ROSA P retains documents in their original published format to ensure public access to scientific information.
i
Evaluating Use of Sub-Grade Drains with PFC for Stormwater Drainage : final report.
-
2017-08-01
-
[PDF-10.08 MB]
Details:
-
Creators:
-
Corporate Creators:
-
Corporate Contributors:
-
Subject/TRT Terms:
-
Publication/ Report Number:
-
Resource Type:
-
Geographical Coverage:
-
Corporate Publisher:
-
NTL Classification:NTL-HIGHWAY/ROAD TRANSPORTATION-Materials;NTL-SAFETY AND SECURITY-Highway Safety;
-
Abstract:The overarching objective of this project is to evaluate the effectiveness of incorporated subgrade drain (usually called “underdrain”) in the permeable friction course (PFC) pavement to facilitate drainage of stormwater within and on the pavement. The researchers from the University of Texas at San Antonio (UTSA) and Texas Tech University (TTU) utilized large-scale physical model testing and numerical simulation to assess the water accumulation within and on the pavement under different rainfall intensities for different pavement configurations. In the TTU campus, a large-scale model facility was built to accommodate a PFC pavement with a dimension of 48 × 6 ft2 and a 2% slope in the long direction. The rainfall was generated by a rain simulator that was connected to an oscillator. With the data collected from the model test, a numerical model was calibrated to further investigate the effectiveness of the underdrain for full scale travel lanes. The numerical model coupled 2D nonlinear hydrodynamic model for the surface runoff and 3D subsurface flow model for seepage within the PFC to account for the water flow within the pavement and underdrain as well as the flow on the pavement surface. For this study, the performance of underdrain for PFC pavement with 2, 3, and 4 lanes with a combination of a cross slope (i.e., 1%, 2% and 3%) and longitudinal slope (i.e., 0% and 1%) under low, moderate, heavy and extreme rainfall intensities was investigated. The effectiveness of underdrain was quantified by comparing with the water accumulation at PFC pavement without underdrain. It was found out that in general the underdrain could effectively remove standing (ponding) water on the pavement surface under moderate to heavy rainfall conditions. Based on the influence range of underdrain, spacing for underdrain under various pavement slope and rainfall intensity is proposed.
-
Format:
-
Funding:
-
Collection(s):
-
Main Document Checksum:
-
Download URL:
-
File Type:
