The operating parameters of the asphalt-paver vibration-screed system (AP-VSS) including the excitation frequencies of the tampers and vibratory screed (ft and fs ) and the angular deviations of the tampers (α 1 and α 2) affect not only the pavement quality but also compaction efficiency. Based on the dynamic model of the AP-VSS and the interaction model of the tamper and hot-mixed asphalt, the experimental and numerical simulation studies of AP-VSS are performed to analyze in detail the influence of operating parameters of the AP-VSS on AP-VSS pavement quality and compaction efficiency. The maximum value of the root-mean-square acceleration (ar.m.s ) of the AP-VSS and the maximum value of the root-mean-square compaction force (Fr.m.s ) of the tampers are selected as the objective functions. The experimental and simulation results indicate that by using the AP-VSS design parameters, the pavement quality and compaction efficiency of the AP-VSS are quite low. To enhance the AP-VSS performance, the operation parameters are then optimized by the multi-objective optimization algorithm. The optimal result shows that the compression energy of the tampers and hot-mixed asphalt interaction is greatly increased by 36.2% in comparison without the optimization. Concurrently, both the values of ar.m.s and Fr.m.s are also increased and uniformly distributed over the length of the screed floor and surface of the hot-mixed asphalt in comparison without the optimization. Therefore, the pavement quality and compaction efficiency of the AP-VSS are remarkably improved.


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    Titel :

    Optimization of Operating Parameters of the Asphalt-Paver Vibration-Screed System in Improving Compaction Efficiency and Pavement Quality for Driving Vehicle Performance


    Weitere Titelangaben:

    Sae Int. J. Veh. Dyn., Stab., and Nvh


    Beteiligte:
    Li, Anding (Autor:in) / Li, Jianwei (Autor:in) / Li, Qian (Autor:in) / Nguyen, Vanliem (Autor:in) / Xiu, Yun (Autor:in) / Mei, Yundong (Autor:in)


    Erscheinungsdatum :

    2023-05-22


    Format / Umfang :

    14 pages




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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