压实方式对沥青混合料结构细观力学的影响

兰州理工大学学报 ›› 2026, Vol. 52 ›› Issue (3): 23-29.

压实方式对沥青混合料结构细观力学的影响

王修山^*1, 李震南², 胡奕琦², 刘淇², 俞烨炜²

1.浙江建设职业技术学院建筑设备学院, 浙江杭州 311231;
2.浙江理工大学建筑工程学院, 浙江杭州 310018

收稿日期:2025-05-19 出版日期:2026-06-28 发布日期:2026-06-30
通讯作者: 王修山(1974-),男,山东肥城人,博士后,教授.Email:lzn@zstu.edu.cn
基金资助:
浙江省自然科学基金(LGF22E080016)

The influence of compaction method on the fine mechanics of asphalt mixture structure

WANG Xiu-shan¹, LI Zhen-nan², HU Yi-qi², LIU Qi², YU Ye-wei²

1. School of Construction Equipment, Zhejiang College of Construction, Hangzhou 311231, China;
2. School of Civil Engineering and Technology, Zhejiang Sci-Tech University, Hangzhou 310018, China

Received:2025-05-19 Online:2026-06-28 Published:2026-06-30

摘要/Abstract

摘要： 利用激光扫描设备和图像处理技术重构具有真实形态的数字集料,通过离散元法建立等尺寸的三维沥青混合料模型,模拟了马歇尔击实和旋转压实方法的压实过程,并引入新型智能颗粒传感器获取力学响应数据来验证DEM模型.分析了不同荷载方式下沥青混合料的接触力基尼指数G、不同强度力链分布概率P(f)、力链方向分布特征以及组构各向异性.结果表明:由击实作用成型的试样,其内部集料-集料、集料-胶浆、胶浆-胶浆之间的接触力基尼指数G分别为0.178、0.129、0.107,强力链(f≥1)分布概率P(f)达32.4%,且集中在力链角度0°附近,诱发更高的组构各向异性;而试样在揉搓作用下,颗粒之间的接触力趋于均匀,弱化了强压实阻力的形成,强力链、次强力链(0.5<f<1)、弱力链(f≤0.5)的分布概率P(f)分别为26.1%、30.7%、43.2%,且力链分布方位向各向均匀性发展.

关键词: 荷载方式, 智能颗粒, 离散元法, 均匀性, 各向同性

Abstract: The equal-size 3D asphalt mixtures were reconstructed using laser scanning equipment and image processing techniques. Three-dimensional asphalt mixture models with identical gradation and size were then developed via the discrete element method (DEM) to simulate the compaction processes of Marshall impact compaction and gyratory compaction. A novel intelligent granular sensor is embedded to capture mechanical response data and validate the DEM simulations. The contact force Gini index, the probability of force chain distribution for different strengths P(f), the characteristics of force chain direction distribution, and the constitutive anisotropy of asphalt mixtures were analysed under different loading methods. The results showed that the Gini index G of contact force between aggregate-aggregate, aggregate-mortar, and mortar-mortar are 0.178, 0.129, and 0.107, respectively, for the specimens moulded by percussive action. The distribution probability P(f) of the strong force chain (f≥1) reaches 32.4%, and is predominantly concentrated near the angle of 0° of the force chain, leading to a higher anisotropy of the group structure. In contrast, under kneading-dominant compaction, the contact force between particles tends to be uniform, weakening the formation of highly resistant strong-compaction regions. The distribution probabilities P(f) of strong force chain, sub-strong force chain (0.5<f<1), and weak force chain (f≤0.5) are 26.1%, 30.7%, and 43.2%, respectively, and the distribution orientation of the force chain develops toward anisotropic uniformity.

Key words: loading mode, smart particles, discrete element method, homogeneity, isotropy

中图分类号:

U416.217

王修山, 李震南, 胡奕琦, 刘淇, 俞烨炜. 压实方式对沥青混合料结构细观力学的影响[J]. 兰州理工大学学报, 2026, 52(3): 23-29.

WANG Xiu-shan, LI Zhen-nan, HU Yi-qi, LIU Qi, YU Ye-wei. The influence of compaction method on the fine mechanics of asphalt mixture structure[J]. Journal of Lanzhou University of Technology, 2026, 52(3): 23-29.

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链接本文: https://journal.lut.edu.cn/CN/

https://journal.lut.edu.cn/CN/Y2026/V52/I3/23

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