基于连续压实及动态变形模量检测技术的土石混填路基压实质量研究  

Soil-rock Concrete Filling Subgrade Compaction Quality Study Based on Continuous Compaction and Dynamic Deformation Modulus Detection Technology

作　　者：郝梦龙 HAO Meng-long(Shanxi Provincial Transportation Planning Survey and Design Institute Co.,Ltd.,Taiyuan,Shanxi 030000,China)

机构地区：[1]山西省交通规划勘察设计院有限公司,山西太原030000

出　　处：《黑龙江交通科技》2023年第8期5-7,共3页Communications Science and Technology Heilongjiang

摘　　要：以静乐丰润至兴县黑峪口高速公路高填方路基填筑为背景,通过现场试验,对不同碾压遍数及松铺厚度条件下,高填方土石混填路基的连续压实值VCV及动态变形模量值进行研究,结果表明:(1)当土石混填路基的松铺厚度一定时,随着碾压遍数的增加,连续压实值VCV呈现增加的趋势,且连续压实值VCV在碾压前期增加速度较快,后期缓慢;(2)松铺厚度为50~60 cm,碾压遍数为5遍时可达到较好的经济效果;(3)路基松铺厚度为50 cm及60 cm时,连续压实值VCV与动态变形模量相关性系数分别为0.714、0.760,松铺厚度为70 cm时,两者离散性较大。Based on the background of high-fill roadbed filling of Jingle Fengrun-Xingxian Heiyukou Expressway,through field tests,this paper studies the continuous compaction of high-fill earth-rock concrete subgrade under the conditions of different rolling times and loose paving thickness.The results show that:(1)When the loose thickness of the soil-rock mixed subgrade is constant,with the increase of the number of rolling passes,the continuous compaction value VCV shows an increasing trend,and the continuous The compaction value VCV increases rapidly in the early stage of rolling and slow in the later stage;(2)the thickness of loose paving is 50~60 cm,and the number of rolling passes is 5 times,which can achieve better economic effect;(3)the thickness of loose paving of roadbed when the thickness is 50 cm and 60 cm,the correlation coefficients between the continuous compaction value VCV and the dynamic deformation modulus are 0.714 and 0.760,respectively,and when the loose thickness is 70 cm,the two are more discrete.

关 键 词：土石混合填料 连续压实值VCV 动态变形模量 相关性 

分 类 号：U416.1[交通运输工程—道路与铁道工程]