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19 report(s) found with wood in the keywords field
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This study presents the results of the most recent phase of laboratory research. The effects of support movements observed in the field test were examined by physical laboratory testing and computer-based structural modeling using AxisVM software [Inter-CAD. Kft, 2004]. The goal of this research was...

This report describes the results of examining the effects of weather exposure conditions on the connection details of the open deck timber trestle bridge. As an exploratory experimental study, the time dependent mechanical effects of moisture, temperature and humidity on a particular connection detail...

Research at Colorado State University in wood-concrete layered composites for structural applications has been in progress for more than a decade. Key features of the research are experimental and analytical work to analyze notched shear key interlayer connections. These connections are being used to...

Investigations into the effects Z-spiking with fiber reinforced polymer (FRP) rods have on the flexural stiffness and repair of deteriorated railroad crossties were conducted. These tests were conducted to provide a pilot study for an ultimate goal of repairing full-scale bridges. This report presents...

Highly Flexible Crash Barriers (Jun 2004, MPC-04-162)

A preliminary study modeling the nonlinear behavior of long, slender wooden members was conducted at Colorado State University for the purpose of their use in inexpensive, destroyable crash barriers. This preliminary study compared the results of physical test data, published exact solutions, and the...

A three-span, open deck timber trestle railroad bridge had been previously field load tested. The prior testing program was done in cooperation with the Transportation Technology Center, Inc., a subsidiary of the Association of American Railroads. The bridge was subjected to static and moving train loads...

The concept of combining wood and concrete in layered composite bridge deck was investigated. A shear key/anchor detail recently used in Europe to construct floors in office buildings was adapted for this study. This connection detail provides the interlayer shear transfer between the layers. Laboratory...

The present research suggests a new approach to the use of composite materials technology for repair of timber structural members. Due to the small aspect ratio of the typical railroad bridge span timbers, stiffness degradation can be related to decrease in the beam's shear performance. To rejuvenate...

This report is an interim report for the first phase of an ongoing project entitled "Moderate Weight Bridge Guardrail for Rural Sites." The objective is to examine the potential of a new bridge guardrail concept as a means of increasing the safety of travel over rural bridges. This project is conducted...

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