摘要
随着我国交通基础设施建设不断发展,市政道路施工建设逐渐增多,市政道路铺设的传统材料及相关技术研究也被广泛关注。基于建筑垃圾碎石土配合比试验强度建立了车辆荷载下路面结构数值模型,并进行了路基单次车辙循环的应力场与变形场研究。研究结果表明:提升弹性模量对路基层应力场的应力扩散起到了关键作用,应力应变场随深度的增加呈递减趋势,应力在弹性模量较小的结构区域敏感性较强;建筑垃圾碎石土在路基层具有良好的力学性能,可为实际工程提供一定参考。最后,针对建筑垃圾碎石土配合比进行了合理的设计与试验对比,证明了结合数值模拟分析是材料研究的必要环节。
With the improvement of transportation infrastructure construction in China,the municipal road construction are gradually increasing.And traditional paving materials for road and technology are widely concerned.Based on the mix proportion test strength of mixture of construction waste andgravels,the numerical model of pavement structure under vehicle load is established in this paper.The stress field and deformation field of subgrade single rutting cycle are studied.The results show that the improvement of elastic modulus plays a key role in the stress diffusion of subgrade stress field.The stress-strain field decreases with the depth direction.The sensitivity of stress is more obviously in the area of relatively small elastic modulus.The construction waste and gravels have good mechanical properties on subgrade.It provides some reference for engineering.Finally,a reasonable design and test comparison are carried out for mix proportion of the mixture.It is necessary to analyze with numerical simulation for combined with.
作者
盛卫东
陈季
张小飞
高雷
黄钰程
唐强
Sheng Weidong;Chen Ji;Zhang Xiaofei;Gao Lei;Huang Yucheng;Tang Qiang(Kunshan Transportation Development Holding Group,Suzhou 215335,China;Soochow University,Suzhou 215131,China)
出处
《市政技术》
2022年第3期38-43,共6页
Journal of Municipal Technology
基金
国家自然科学基金项目(52078317)
江苏省自然科学基金(优秀青年基金项目)(BK20211597)
江苏省自然科学基金项目(BK20210720)
江苏省建设系统科技项目(2021ZD02)
昆山交通发展控股集团有限公司科技项目
苏州市建设系统科研项目(2021-25)
江苏省高等学校自然科学研究面上项目(19KJ11580018)。
关键词
建筑垃圾碎石土
路基填筑
车辆荷载
数值模拟
mixture of construction waste and gravels
subgrade filling
vehicle load
numerical simulation
