Fatigue Performance Of Variable Message Sign Luminaire Support Structures Fatigue Related Wind Loads On Highway Support Structures
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Fatigue Performance Of Variable Message Sign Luminaire Support Structures
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Author : Gary R. Consolazio
language : en
Publisher:
Release Date : 1998
Fatigue Performance Of Variable Message Sign Luminaire Support Structures written by Gary R. Consolazio and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Traffic signs and signals categories.
In Order to determine equivalent static pressures for fatigue loads on cantilevered highway support structures a cantilevered Variable Message Sign(VMS) located along Interstate westbound at mile marker 48.5 in northern New Jersey was continuously monitored for three months. The structure was instrumented with strain gages, pressure transducers, and a wind sentry. All the data was collected with a Campbell Scientific CR9000 digital data acquisition system. A cellular phone transceiver enabled remote communication with the data logger. The system and instrumentation was powered with solar powers and marine batteries. Short-term testing was performed on the structure to determine the dynamic characteristics such as stiffness, natural frequency, and percent of critical damping. Results of the short-term test indicated that the stiffness was 0.24 kN/mm, the first and the second modes were 0.87 cycles/s and 1.22 cycles/s respectively, and the percent of critical damping for the first and second modes were 0.57 percent and 0.25 percent respectively. Long-Term monitoring was performed to capture the structures response to natural wind gusts, galloping, and truck-induced wind gusts. This data would then be used to determine appropriate fatigue design wind loads for future sign support structures. During the three months of monitoring the structure did not experience galloping, which is a phenomena highly dependent on location. A galloping design pressure of 1000 Pa was recommended based on previous research. The summer months, which is when the structure was monitored, were not conductive to the strongest natural winds patterns in Northern New Jersey. The highest natural wind speed that was recorded was 7.5m/s. It is believed that much stronger winds are present in winter and spring, therefore a natural wind gust design pressure of 250 Pa was recommended. Truck-induced gusts were measured and a linear gradient for the truckinduced gust design pressure was determined. The truck-induced gust design pressure ranged linearly from 1760 Pa at 0 to 6m above the surface of the road to 0 Pa at 10.1m and over.
Fatigue Performance Of Variable Message Sign Luminaire Support Structures
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Author : Gary R. Consolazio
language : en
Publisher:
Release Date : 1998
Fatigue Performance Of Variable Message Sign Luminaire Support Structures written by Gary R. Consolazio and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Aluminum categories.
Fatigue Performance Of Variable Message Sign Luminaire Support Structures Fatigue Related Wind Loads On Highway Support Structures
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Author : Gary R. Consolazio
language : en
Publisher:
Release Date : 1998
Fatigue Performance Of Variable Message Sign Luminaire Support Structures Fatigue Related Wind Loads On Highway Support Structures written by Gary R. Consolazio and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Traffic signs and signals categories.
This report describes research which focused on determining equivalent static pressures for fatigue loads on cantilevered highway sign support structures. A cantilevered variable message sign (VMS) instrumented with strain gages, pressure transducers, and a wind sentry, was continuously monitored for three months. Short-term testing was conducted on the structure in order to determine the dynamic characteristics such as stiffness, natural frequency, and percent of critical damping. Long-term monitoring was performed to capture the structure's response to natural wind gusts, galloping, and truck-induced wind gusts.
Fatigue Performance Of Variable Message Sign Luminaire Support Structures Fatigue Testing And Failure Analysis Of Aluminum Luminaire Support Structures
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Author : Gary R. Consolazio
language : en
Publisher:
Release Date : 1998
Fatigue Performance Of Variable Message Sign Luminaire Support Structures Fatigue Testing And Failure Analysis Of Aluminum Luminaire Support Structures written by Gary R. Consolazio and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Traffic signs and signals categories.
Fatigue Related Wind Loads On Highway Support Structures
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Author : Kevin W. Johns
language : en
Publisher:
Release Date : 1998
Fatigue Related Wind Loads On Highway Support Structures written by Kevin W. Johns and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Street signs categories.
Fatigue Resistant Design Of Cantilevered Signal Sign And Light Supports
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Author : Mark R. Kaczinski
language : en
Publisher: Transportation Research Board
Release Date : 1998
Fatigue Resistant Design Of Cantilevered Signal Sign And Light Supports written by Mark R. Kaczinski and has been published by Transportation Research Board this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Technology & Engineering categories.
Structural Analysis Of Sign Bridge Structures And Luminaire Supports
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Author :
language : en
Publisher:
Release Date : 2004
Structural Analysis Of Sign Bridge Structures And Luminaire Supports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with Traffic signs and signals categories.
Structural Supports For Highway Signs Luminaires And Traffic Signals
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Author : Fouad H. Fouad
language : en
Publisher: Transportation Research Board
Release Date : 2003
Structural Supports For Highway Signs Luminaires And Traffic Signals written by Fouad H. Fouad and has been published by Transportation Research Board this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with Lampposts categories.
Structural Supports For Highway Signs Luminaires And Traffic Signals
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Author : Fouad Hilmy Fouad
language : en
Publisher:
Release Date : 1998
Structural Supports For Highway Signs Luminaires And Traffic Signals written by Fouad Hilmy Fouad and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Lampposts categories.
Fatigue Risks In The Connections Of Sign Support Structures
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Author :
language : en
Publisher:
Release Date : 2008
Fatigue Risks In The Connections Of Sign Support Structures written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with Traffic signs and signals categories.