目前國道之養護大部分均針對鋪面表面之破壞進行修補，而此維修方法並無法解決鋪面結構強度不足導致之鋪面破壞，最終鋪面產生永久破壞，因此須對於鋪面結構進行定期性之評估，以確認鋪面之強度尚能承受當前交通，然而台灣目前尚無對於鋪面結構建立評估標準，因此本研究利用ETC交通量資料以及落重式撓度儀之檢測資料建立國道之鋪面結構評估標準。落重式撓度儀為鋪面結構檢測之儀器，於國內外之使用已相當普及，由於鋪面撓度受溫度影響甚巨，因此進行鋪面撓度分析前須進行溫度之校估，本研究進行各溫度下之回彈模數值作為參數進行ABAQUS模擬落重式撓度儀於不同溫度對於鋪面之施作，將其模擬數據進行統計迴歸分析，以建立撓度之溫度校估模式。國道1號以及國道3號之ETC門架已發展完整，可利用ETC大數據資料庫計算通過國道各車種之數量，並利用標準軸重轉換係數計算ESALs值，導入落重式撓度儀校正後撓度值，依AASHTO柔性鋪面加鋪設計手冊檢核鋪面之承載力，建立國道鋪面結構強度之評估準則，後續針對強度不足之路段進行養護成本分析，針對強度足夠之路段進行剩餘壽命之分析。本研究以國道3號南下83k~89k為例進行鋪面結構強度評估，依據成果可知本研究建立之溫度校正模式以及強度評估可適用於一般國道斷面，且工程師可將本研究之建議工法以及剩餘壽命作為養護依據。;The main maintenance approach are surface treatments on the Taiwan National Freeway. However, it cannot totally solve the pavement structure damaged problems caused by insufficient strength of the pavement to withstand the current traffic volume. Periodic assessments are necessary to confirm whether the strength of the pavement is sufficient or not, there is no any official criterion to establish the freeway pavement structure assessment in Taiwan. According to the AASHTO “Guide for Design of Pavement Structures”, it is necessary to establish these criteria and check the load bearing capacity of pavement, maintenance cost analysis, and strength analysis to detect the remaining service life of pavement. Therefore, this study established the standard of pavement structure evaluation for Taiwan National Freeway No. 3 from km 83 to 89 uses Falling Weight Deflectometer (FWD) and Electronic Toll Collection (ETC) traffic volume data to. FWD was popularly used abroad as a pavement structure deflection instrument and significance influenced by temperature. This study carried out a temperature calibration analysis of pavement deflection used Resilient Modulus (Mr) at various temperatures by ABAQUS and Statistics. The developed ETC big data used to calculate the number and types of vehicles, with standard axis load conversion factors for calculate ESALs. At last, the ESALs and FWD correction deflection were used to evaluate the current pavement structure capacity. According to the results, temperature calibration and pavement structure evaluation criteria established by this study could be used on the pavement structure our Taiwan freeway. Based on above, the pavement structure evaluation criteria of this study are worthy of further study.
