振动压路机压实过程中接触几何变化的考虑

IF 2.7 Q2 CONSTRUCTION & BUILDING TECHNOLOGY Infrastructures Pub Date : 2023-06-30 DOI:10.3390/infrastructures8070110
J. Pistrol, Mario Hager, F. Kopf, D. Adam
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引用次数: 0

摘要

振动压路机主要用于颗粒介质的近表面压实,用于各种施工任务。除了明显的深度效应外,几十年来,振动压路机还提供了工作集成压实控制(智能压实)的可能性。智能压实(ICMV)的最新测量值仅考虑滚筒和土壤之间接触面积的恒定几何形状(如果有的话)。因此,本文引入了一个相对简单的力学模型,描述了压实过程中振动筒与下层土壤之间的动态相互作用,以研究接触区几何形状的变化对振动筒运动行为的影响。该模型在真实的土壤和机器参数上进行了测试,并将不同滚筒接触几何形状的模拟结果与固定接触几何形状的传统模拟结果进行了比较。分析表明,只有考虑到滚筒接触几何形状的变化,才能充分反映振动滚筒和土壤之间的动态相互作用,并提供与现场测量结果一致的滚筒运动行为。
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Consideration of the Variable Contact Geometry in Vibratory Roller Compaction
Vibratory rollers are mainly used for the near-surface compaction of granular media for a wide variety of construction tasks. In addition to the pronounced depth effect, vibratory rollers have offered the possibility of work-integrated compaction control (intelligent compaction) for decades. State-of-the-art measurement values for intelligent compaction (ICMVs) only take into account, if at all, a constant geometry of the contact area between the drum and soil. Therefore, this paper introduces a comparatively simple mechanical model, which describes the dynamic interaction between the vibrating drum and the underlying soil during compaction to investigate the influence of the changing geometry of the contact area on the motion behavior of the vibrating drum. The model is tested on realistic soil and machine parameters, and the results of the simulation with varying drum contact geometry are compared to a conventional simulation with a fixed contact geometry. The analysis shows that only a consideration of the varying drum contact geometry can map the dynamic interaction between the vibrating drum and soil sufficiently and provide a motion behavior of the drum that is in good accordance with the field measurements.
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来源期刊
Infrastructures
Infrastructures Engineering-Building and Construction
CiteScore
5.20
自引率
7.70%
发文量
145
审稿时长
11 weeks
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