摘要
为分析再生水稳铣刨料用于台背回填时的路用性能,采用数值计算与现场监测相结合的方法,对比分析再生水稳铣刨料、风积砂及常规路基土台背回填材料的沉降特性、力学响应及发展规律。结果表明:在回填料与常规路基搭接处,填筑再生水稳铣刨料比风积砂与常规路基土沉降量分别减少了17.6%和29.4%;水平位移比常规路基土和风积砂分别减小50.0%和25.0%,路基更加稳定;竖向应力比常规路基土减小17.3%,降低了新旧路基搭接段失稳的风险;现场沉降监测结果与数值计算结果基本一致,数值计算精度可靠。可见,再生水稳铣刨料用于台背回填时可有效减少路桥过渡段差异沉降、水平位移及竖向应力,整体性较好,具有良好的应用价值。
In order to analysis the road performance of reclaimed cement stabilized milling materials used for abutment backfilling,this study compared and analyzed the settlement characteristics,mechanical response and development law of reclaimed cement stabilized milling materials,aeolian sand and conventional abutment backfill materials by combining numerical calculation and field monitoring.The results show that the settlement of reclaimed cement stabilized milling materialsis 17.6%and 29.4%lower than that of aeolian sand and conventional subgrade soil respectively at the overlap between backfill and conventional subgrade.Compared with conventional subgrade soil and aeolian sand,the horizontal displacement is reduced by 50.0%and 25.0%respectively and the subgrade is more stable.Compared with conventional subgrade soil,the vertical stress is reduced by 17.3%,which reduces the risk of instability of old and new subgrade lap sections.The field monitoring results are basically consistent with the numerical calculation results and the numerical calculation accuracy is reliable.The reclaimed cement stabilized milling materials,which can effectively reduce the differential settlement,horizontal displacement and vertical stress of the road-bridge transition section when used for abutment backfilling,have good overall performance and application value.
作者
赵全满
刘建树
李皓
胡文军
卢晓锦
周浩
ZHAO Quanman;LIU Jianshu;LI Hao;HU Wenjun;LU Xiaojin;ZHOU Hao(School of Transportation Engineering,Shandong Jianzhu University,Jinan,Shandong 250101,China)
出处
《山东科技大学学报（自然科学版）》
CAS
北大核心
2022年第5期102-109,共8页
Journal of Shandong University of Science and Technology(Natural Science)
基金
国家自然科学基金项目(51808322)
山东省自然科学基金项目(ZR2020QE273)
山东省企业技术创新项目(202160101409)
山东建筑大学研究生教育质量提升计划资助项目(201107)。
关键词
道路工程
台背回填段
再生水稳铣刨料
沉降特性
力学响应
现场监测
road engineering
abutment backfill section
reclaimed cement stabilized milling material
settlement characteristics
mechanical response
field monitoring
