摘要
通过修筑不同厚度半刚性基层沥青路面结构的室外试槽模型,并在路基中埋设传感器,分别采集试验车在100,150,200,250和300kN荷载作用下路基中的压应力,分析了不同强度半刚性基层路面结构对路基压应力的影响规律。测试结果表明:对于不同强度路面结构,沿路基垂直方向,随着深度的增加,压应力呈总体衰减趋势;从压应力衰减趋势来看,在本次试槽路面结构层中,增加相同厚度的沥青混凝土面层和水泥稳定砂砾,水泥稳定砂砾对提高路面强度更显著。
By constructing different thickness of asphalt pavement structure outdoor test tank model, the test vehicle＇s eompressive stress is collected in subgrade eorrespondingly under the load of 100,150,200,250 and 300 kN,which was based on semi-rigid tank model test and embedded sensors in the subgrade. The impact of semi-rigid base pavement structure is analyzed with different strength compressive stress on the suhgrade. The results indicate that for different pavement structure strength along vertical direction of subgrade, the compressive stress presents an attenuation trend overall with the increase of the depth. From the attenuation trend of compressive stress, the role of cement-stabilized gravel for improving the pavement strength was more significant while the increase of the same thickness of the asphalt concrete pavement and cement can stabilize the gravel.
出处
《交通科学与工程》
2015年第3期23-27,共5页
Journal of Transport Science and Engineering
基金
新疆维吾尔自治区交通运输厅科技项目(201209)
关键词
路基路面
结构强度
现场测试
压应力
subgrade and pavement
structural strength
field test
compressive stress
作者简介
陈伟（1988-），男，新疆农业大学硕士生。
