Small Projects

Benchmarking and Safety Assessment for Modified Lateral Spreading Design Procedure Using Three-Dimensional Nonlinear Finite Element Analysis


University:

PI: Christopher R McGann (WSU), christopher.mcgann@wsu.edu
Dates: 12/16/2015 – 12/15/2016

The purpose of this proposed project is to verify the safety of bridge foundations designed with an improved/modified lateral spreading design procedure using nonlinear 3D finite element models. The current design procedures used for liquefaction-induced lateral spreading are often overly conservative due to the simplifying assumptions involved in their use. A modified design procedure (Martin et al., 2002; Zha, 2004; Boulanger et al., 2006; Ashford et al., 2011) that is part of the focus of this proposed work has been developed as a means to more appropriately consider the relevant aspects of the laterally-spreading bridge-foundation-soil system. This procedure has been shown to be effective in its intended purpose of reducing some of the excessive conservatism associated with more simplified design approaches, however, there has only been limited testing and analysis to verify and benchmark the relative safety of the resulting design solutions for a wide range of bridges, foundations, and soil conditions. Read More

Identifying High-Risk Built Environments for Severe Bicycling Injuries


University:

PI: Qing Shen (UW), qs@u.washington.edu
Dates:  12/16/2015 – 12/15/2016

The rise of eco-friendly lifestyles has contributed to the increasing popularity of bicycling in the US. However, cyclist crash injuries remain as a serious public health problem. While the number of deaths in traffic crashes has declined significantly over the past four decades (The National Highway Traffic Safety Administration 2012a), the number of injured cyclists increased from 45,000 in 2001 to 49,000 in 2012. The percentage of cyclist fatalities among total traffic deaths increased from 1.7% to 2.2% in the same period (The National Highway Traffic Safety Administration 2012b). Thus, it is important to understand what factors are associated with cyclist injuries, especially severe injuries. Read More

Analysis of Roadway Safety under the Alternative Project Delivery Systems


University:

PI: Ahmed Abdel Aziz (UW), amaziz@uw.edu
Dates: 12/16/2015 – 12/15/2016

In the United States, most highway projects were developed using the traditional design‐bidbuild delivery system. Following to regular conditions assessment, maintenance of a road is performed based on the availability of funds and the priorities established for road maintenance. With the scarcity of maintenance funds, serviceability of roads is impacted, which affects road safety. Read More

Aerodynamic Effects on Two-Lane Rural Highway Safety


University:

PI: Tao Xing (UI), xing@uidaho.edu
Dates: 12/16/2015 – 12/15/2016

The goal of this project is to use advanced computational fluid dynamics (CFD) models and wind tunnel experimental measurements to study the effects of aerodynamics on two-lane rural highway safety in the United States. The project will focus on the changes of forces and moments in three dimensions during the crossing and overtaking process between cars and trucks under various environmental wind conditions, especially cross-wind. Read More

Spatial Analysis of Bicycle and Pedestrian Count Data


University:

PI: Mike Lowry(UI)
Dates: 12/16/2015 – 12/15/2016

This project will create best-practice recommendations for collecting bicycle and pedestrian count data that state DOTs and their community partners can use when deciding where to locate permanent counters or how to spatially distribute volunteer manual counters. Read More

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