An experimental and numerical investigation of influencing factors of gravel vibratory compaction

IF 7.4 1区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Construction and Building Materials Pub Date : 2025-03-31 DOI:10.1016/j.conbuildmat.2025.141084

Zhenxing Liu , Chengzhou Fan , Yintong Min , Chun Liu , Shiguo Li , Yanxia Li , Xiaodong Liang

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引用次数: 0

Abstract

Vibration compaction is an effective method for improving sand foundations. To investigate the influence of vibration parameters and gravel gradation on vibratory compaction, a series of vibratory compaction tests with different vibration parameters and gravel gradations were carried out. A three-dimensional vibratory compaction simulator based on the discrete element software MatDEM was established. The effects of vibration frequency, nominal amplitude, and friction coefficient on final porosity were investigated. The results indicate that the vibration compaction effect is mainly determined by static pressure and excitation force, with the excitation force being the primary factor. The wider the gradation of the specimen, the lower the porosity. The lowest porosity is achieved at the vibration frequencies between 20 and 30 Hz, close to the resonance frequency. The porosity decreases with increasing amplitude in the range of 0.6–2 mm, associated with an increase in the compaction work. The vibration compaction effect is influenced by both friction coefficient and static pressure. When the friction coefficient is low, the porosity decreases with increasing static pressure. However, when the friction coefficient is great, a high static pressure produces large friction forces between particles, resulting in a greater porosity.

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来源期刊

Construction and Building Materials 工程技术-材料科学：综合

CiteScore

13.80

自引率

21.60%

发文量

3632

审稿时长

82 days

期刊介绍： Construction and Building Materials offers an international platform for sharing innovative and original research and development in the realm of construction and building materials, along with their practical applications in new projects and repair practices. The journal publishes a diverse array of pioneering research and application papers, detailing laboratory investigations and, to a limited extent, numerical analyses or reports on full-scale projects. Multi-part papers are discouraged. Additionally, Construction and Building Materials features comprehensive case studies and insightful review articles that contribute to new insights in the field. Our focus is on papers related to construction materials, excluding those on structural engineering, geotechnics, and unbound highway layers. Covered materials and technologies encompass cement, concrete reinforcement, bricks and mortars, additives, corrosion technology, ceramics, timber, steel, polymers, glass fibers, recycled materials, bamboo, rammed earth, non-conventional building materials, bituminous materials, and applications in railway materials.