基于内聚力模型的水稳碎石基层微裂技术数值模拟
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河北工业大学,河北工业大学

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TB332

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河北省高等学校科学技术研究项目(ZD2014099)


Numerical simulation of micro-crack technology of cement stabilized macadam base on cohesive zone model
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Hebei University of technology,

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Hebei Provincial College of Science and Technology Research Project(ZD2014099)

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    摘要:

    为验证微裂技术能够有效地减小水泥稳定碎石早期收缩应力,对微裂后的水泥稳定碎石基层进行数值模拟。通过使用ABAQUS有限元软件并基于内聚力模型,对微裂后的水泥稳定碎石基层在外界环境变化时进行数值模拟分析,模拟了不同间距和不同深度裂缝布置下最大主应力的分布情况以及系统能量的变化规律,结果表明:水泥稳定碎石基层的最大主应力和系统总能量随微裂缝间距的减小和深度的增加均呈减小趋势;并通过微裂技术在实际工程中的应用证明了微裂技术在减少水稳碎石基层收缩裂缝和减轻沥青路面反射裂缝中具有一定创新性和工程适用性。

    Abstract:

    A numerical simulation of the cement stabilized macadam base after micro-cracking was held to verify that the micro-cracking technology could efficiently reduce the early shrinkage stress of the cement stabilized macadam. By using ABAQUS finite element software and based on the cohesive zone model, it was able to numerically simulate and analyze the cement stabilized macadam base after micro-cracking when the external environment changed. In that process,the distribution of maximum principal stress and the change regularity of systematic energy were simulated under different cracks’ depth and different space arrangement. The results proved that the maximum principal stress and the systematic energy showed a decrease trend with the decrease of cracks’ spacing and the increase of depth. And through the application of the micro-cracking technology in practical engineering, it was proved that the micro-cracking technology had certain innovation and engineering applicability to reduce the shrinkage crack of the cement stabilized macadam base and the reflection crack of the bituminous pavement.

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引用本文

魏连雨,梁筱. 基于内聚力模型的水稳碎石基层微裂技术数值模拟[J]. 科学技术与工程, 2018, 18(32): .
weilianyu and. Numerical simulation of micro-crack technology of cement stabilized macadam base on cohesive zone model[J]. Science Technology and Engineering,2018,18(32).

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历史
  • 收稿日期:2018-03-21
  • 最后修改日期:2018-08-16
  • 录用日期:2018-08-21
  • 在线发布日期: 2018-11-28
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