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Development And Evaluation Of An Inertial Based Pavement Roughness Measuring System
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Book Synopsis Development and Evaluation of an Inertial Based Pavement Roughness Measuring System by : Fengxuan Hu
Download or read book Development and Evaluation of an Inertial Based Pavement Roughness Measuring System written by Fengxuan Hu and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: ABSTRACT: Roughness is an important indicator of pavement riding comfort and safety. It is a condition indicator that should be carefully considered when evaluating primary pavements. At the same time, the use of roughness measurements plays a critical role in the pavement management system. There are many devices used for roughness evaluation. The major tools used for road roughness quantify are the road profilers. In the thesis research, in order to obtain useful pavement surface condition data for pavement evaluation, an inertial based pavement roughness measuring system was developed with the combination of modern sensor technology and computer technology. The research will focus on the development of new method to get the profile in order to improve the repeatability of the inertial based pavement roughness system, the hardware design and the software development which is used for data sampling and data analysis. Finally maximum entropy spectral analysis method was used to evaluate the road profile spectrum. In order to get evaluate the accuracy and correction of the laser profiler system, different roughness devices (including Dipstick, direct type profiler and the laser profiler developed) were operated in the test sites. The research focused on several performance measures, such as repeatability (before and after new method analysis), impact of operating speed and sample interval, correlativity and etc. IRI from these devices were analyzed to evaluate the correlativity between these devices. Some regression models were developed in this research. Test results show that the new method can improve the repeatability of the profiler system. The laser profiler system has good repeatability and the operating speed and sample interval do not have a significant impact on the inertial based roughness measuring system. With the reliable results, the system is ready to be used in the field application within the speed and sample interval range. Through the spectrum analysis, it shows that the spectrum has a qualitative relation with pavement roughness conditions.
Book Synopsis Development of Automatic Measuring Systems for Pavement Roughness Evaluation by : Min Zhou
Download or read book Development of Automatic Measuring Systems for Pavement Roughness Evaluation written by Min Zhou and published by . This book was released on 1999 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Publications by : United States. National Bureau of Standards
Download or read book Publications written by United States. National Bureau of Standards and published by . This book was released on 1991 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Roads and Transportation Association of Canada. Pavement Design and Evaluation Committee. Pavement Output Measurements Subcommittee Publisher : ISBN 13 : Total Pages : pages Book Rating :4.:/5 (617 download)
Book Synopsis Evaluation of the Car Road Meter by : Roads and Transportation Association of Canada. Pavement Design and Evaluation Committee. Pavement Output Measurements Subcommittee
Download or read book Evaluation of the Car Road Meter written by Roads and Transportation Association of Canada. Pavement Design and Evaluation Committee. Pavement Output Measurements Subcommittee and published by . This book was released on 1971 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Publications of the National Institute of Standards and Technology ... Catalog by : National Institute of Standards and Technology (U.S.)
Download or read book Publications of the National Institute of Standards and Technology ... Catalog written by National Institute of Standards and Technology (U.S.) and published by . This book was released on 1991 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Development of Methods and Specifications for the Use of Inertial Profilers and the International Roughness Index for Newly Constructed Pavement by : Dwayne Harris
Download or read book Development of Methods and Specifications for the Use of Inertial Profilers and the International Roughness Index for Newly Constructed Pavement written by Dwayne Harris and published by Joint Transportation Research Program. This book was released on 2013-10 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Indiana Department of Transportation (INDOT) is currently utilizing a profilograph and the profile index for measuring smoothness assurance for newly constructed pavements. However, there are benefits to implementing a new IRI based smoothness specification utilizing road profiles measured using inertial profilers. Technological advancements have improved the quality of road profiles measured using inertial profilers; furthermore, utilizing inertial profilers allows smoothness data to be collected much more quickly and efficiently than the methodology currently utilized by INDOT. Pavement smoothness quantified using International Roughness Index (IRI) calculated using profiles provided by inertial profiles is better correlated to user response than what is currently being utilized by INDOT. Furthermore, INDOT currently utilizes IRI to monitor the pavement smoothness throughout the remaining life of the pavement. Consequently, Utilizing IRI for measuring the smoothness of newly constructed pavements allows seamless monitoring of pavement smoothness from cradle to grave. This study presents an IRI based draft smoothness specification for newly constructed pavements utilizing profiles provide by inertial profilers. The process developing a draft specification included developing pay factor tables, developing the methodology for calculating the smoothness bonus, developing methodology for locating areas of localized roughness, and developing inertial profiler certification procedures.
Book Synopsis Development of a Road Roughness Measurement and Evaluation System by : Waddah Weld Ali
Download or read book Development of a Road Roughness Measurement and Evaluation System written by Waddah Weld Ali and published by . This book was released on 2001 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Guidelines for Conducting and Calibrating Road Roughness Measurements by : Michael W. Sayers
Download or read book Guidelines for Conducting and Calibrating Road Roughness Measurements written by Michael W. Sayers and published by . This book was released on 1986 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: Road roughness is gaining increasing importance as an indicator of road condition, both in terms of pavement performance, and as a major determinant of road user costs. This paper defines roughness measurement systems hierachically into four groups, ranging from profilometric methods (2 groups), through response type road roughness measuring systems (RTRRMS's), and, subjective evaluation. The International Roughness Index (IRI) is defined, and the programs for it's calculation are provided. The IRI is based on simulation of the roughness response of a car travelling at 80 km/h. The report explains how all roughness measurements can be related to this scale, also when travelling at lower speeds than 80 km/h. The IRI emerges as a scale that can be used both for calibration and for comparative purposes.
Book Synopsis Development and Evaluation of a Method for Validation of Pavement Roughness Measurements by : Hans Prem
Download or read book Development and Evaluation of a Method for Validation of Pavement Roughness Measurements written by Hans Prem and published by . This book was released on 1998 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurements, Specifications, and Achievement of Smoothness for Pavement Construction by : James H. Woodstrom
Download or read book Measurements, Specifications, and Achievement of Smoothness for Pavement Construction written by James H. Woodstrom and published by Transportation Research Board. This book was released on 1990 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: This synthesis will be of interest to construction engineers, pavement designers, contractors, and others interested in construction of new highway pavements with smooth surfaces. Information is provided on the various devices and specifications that are being used to obtain smooth pavements. The public rates a pavement primarily on its smooth-riding characteristics and highway agencies recognize that constructing smooth pavements results in fewer problems later and lower annual maintenance costs. This report of the Transportation Research Board describes the devices and specifications highway agencies use to ensure that newly constructed pavements will provide a smooth ride.
Book Synopsis Dissertation Abstracts International by :
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2007 with total page 854 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Development of a System for High-speed Measurement of Pavement Roughness by : Roger S. Walker
Download or read book Development of a System for High-speed Measurement of Pavement Roughness written by Roger S. Walker and published by . This book was released on 1971 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measuring Road Roughness and Its Effects on User Cost and Comfort by : Thomas D. Gillespie
Download or read book Measuring Road Roughness and Its Effects on User Cost and Comfort written by Thomas D. Gillespie and published by ASTM International. This book was released on 1985 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Calibration of Road Roughness Measuring Equipment by :
Download or read book Calibration of Road Roughness Measuring Equipment written by and published by . This book was released on 1989 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume I: Experimental Investigation, documents an extensive series of measurements of the performance of a commercial inertial road profiling system (IRPS) and a commercial response-type road roughness measurement (RTRRM) system. Based upon the results of these measurements and upon an analysis of the operation of such equipment, calibration and testing guides, given in the Volume II were developed to assist users in assessment of IRPS and RTRRM functionality and operating performance.
Book Synopsis Development of a System for High-speed Measurement of Pavement Roughness, Final Report by : Roger S. Walker
Download or read book Development of a System for High-speed Measurement of Pavement Roughness, Final Report written by Roger S. Walker and published by . This book was released on 1971 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Development of Direct-type and Response-type Automatic Pavement Roughness Evaluation System by : Chongkang Zhu
Download or read book Development of Direct-type and Response-type Automatic Pavement Roughness Evaluation System written by Chongkang Zhu and published by . This book was released on 2001 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Development and Preliminary Evaluation of a Varying-Speed Road Profiler by : Runhua Guo
Download or read book Development and Preliminary Evaluation of a Varying-Speed Road Profiler written by Runhua Guo and published by . This book was released on 2020 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: The International Roughness Index (IRI) has been widely used to characterize the road ride quality in the highway engineering community. IRI is commonly obtained via the longitudinal profile data collected by a high-speed inertial profiler. It is well known that the IRI value based on an inertial profiler can be biased under low-speed or varying-speed conditions. This stems from the inherent limitation of the accelerometer embedded in the measurement system. This study proposes a different approach to solving the problem by employing three-dimension laser scanning technology. Without relying on the accelerometer to offset the vehicle vertical dynamics/vibration, the new approach uses the measurement by a line laser to transfer the elevation along the driving direction. Following this principle, a road profiler was developed and installed on a host vehicle. A preliminary evaluation of the newly developed profiler was conducted on two urban road sections in Beijing. The elevation was focused on wavelength, IRI index, and repeatability analysis. The results showed that the proposed profiler could effectively capture road elevation and accurately characterize ride quality. It was indicated that this new equipment could serve as a useful tool to better accommodate the ride quality measurement under varying-speed data collection conditions, particularly in the urban environment.
