管線挖埋回填區域鋪面強度檢驗之研究

林奕君

doi:10.6342/NTU201601889

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管線挖埋回填區域鋪面強度檢驗之研究

Structure Capacity Evaluation for Utility Cuts

林奕君 , Masters　　Advisor：周家蓓　　

繁體中文 DOI： 10.6342/NTU201601889

管線挖埋工程；鋪面整體結構強度；輕型落重撓度儀(LWD) ；溫度校估；鋪面維護管理； Utility Cuts Construction ； Structural Capacity ； Light Weight Deflectometer (LWD) ； Temperature Adjusted model ； Pavement Maintenance Management

Abstract │ Reference (50) │ Altmetrics

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Utility pipelines are essential facilities and most of them are separately placed underneath the urban roads in Taiwan. To install and maintain, pavement is repeatedly cut and excavated. In the consequence, the pavement service performance is impacted seriously and the pavement management becomes a challenge. To overcome this problem, Taiwan Executive Yuan promoted the Road Smoothing Project and requested each city/county municipal government must set the standards for requiring the minimum depth of pipeline, the quality of refill material, and the construction process. However, the results were not very effective. The pavement distresses related to utility cuts, such as the reflection cracking in the cut interface and the alligator cracking in the repair area, still appear frequently. This paper presents a study of using Light Weight Deflectometer (LWD) to establish an inspection method to evaluate the influence of utility cuts in pavement structural capacity. The appropriate combination of drop height and load plate size of LWD, the templates of testing points, and inspection procedure were studied and recommended. Temperature adjustment model of the LWD test result was also developed by field tests in this research. In this study, seven in situ utility cuts constructions were conducted the LWD test in three stages, i.e. before utility cuts, after temporary repair, and after formal milling and overlay repair. In addition, four of them did the extra LWD test every two months after formal milling and overlay repair for about half year. According to the test results, the original structure capacity E_LWD were about 400 to 800 MPa, and the structure capacity E_LWD after utility cuts construction became 1200 to 1800 MPa due to using the Controlled Low Strength Materials (CLSM) as refilling materials. Moreover, the Finite Element (FEM) model of this inspection method were created to simulate the LWD tests.

Reference ( 50 ) 〈TOP〉

2. Arudi, R., B. Pickering, and J. Flading, Planning and implementation of a management system for utility cuts. Transportation Research Record: Journal of the Transportation Research Board, 2000(1699): p. 42-48.
連結：
9. 許自儀, 市區道路挖掘對服務品質影響之研究, in 土木工程學研究所. 2005, 國立臺灣大學.
連結：
10. 魏光譽, 縣市政府提升道路挖掘埋設維生管線管理成效之研究－以桃園縣為例, in 土木工程學系碩士在職專班. 2008, 國立中央大學.
連結：
11. Chow, C. and V. Troyan, Quantifying damage from utility cuts in asphalt Pavement by using San Francisco's Pavement Management data. Transportation Research Record: Journal of the Transportation Research Board, 1999(1655): p. 1-7.
連結：
12. 高健洋, 分析道路管溝底層回填料之沉陷, in 土木工程學系專班. 2010, 成功大學.
連結：

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