Using Inertial Profiler Data to Evaluate the Smoothness Specification of Road Construction
Date Issued
2006
Date
2006
Author(s)
CHEN, HUNG-CHANG
DOI
zh-TW
Abstract
The smoothness specification of roadway construction is specified for using 3-meter straightedge in Taiwan. The acceptance criteria vary depending on the categories of roadway classes. Two parameters, maximum heave and dip of each measurement and standard deviation of one measured section, are used to determine the level of acceptance. For construction’s quality assurance, data are collected for every 1.5 meter interval at sample sub-sections by using the 3-meter straightedge. It is a very time consuming process for data acquisition and analysis. The objective of this research study is to develop a simulation model for analyzing the 3-meter straightedge result based on the continuous data collected from inertial profiler. Comparison of analyzed results between the current process and the simulation model is presented. In this study two types of roadway construction are evaluated. They are new pavement sections and mill/ overlay pavement sections. A total length of 89000 meter of urban street is surveyed by inertial profiler and computer software is developed for the simulation purpose. It is found that 39% of the new pavement sections and 73% of the mill/ overlay pavement sections do not meet the smoothness specification even though they were accepted by the agents utilizing the current sampling measurement method. It is concluded that the developed simulation model can provide an efficient and accurate evaluation of smoothness for pavement construction. Moreover, based on the current specification used by the Construction and Housing Bureau, about 70% of the newly constructed city roadway passes the threshold of IRI≦350 cm/ km while only 40% of the mill/ overlay city roadway meets the standard. From the analyzed data it is also found that the manholes affect the smoothness significantly.
Subjects
平坦度
慣性式平坦儀
三米直規
Smoothness specification
3-meter straight edge
inertial profiler
simulation model
SDGs
Type
thesis
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