市政道路路基压实状态固有频率试验研究  

Experimental Study on Natural Frequency of Compacted State of Municipal Road Subgrade

作　　者：江小波 Jiang Xiaobo(Guiyang Nanming District Housing Construction Comprehensive Development Company,Guiyang,Guizhou 550000)

机构地区：[1]贵阳市南明区住宅建设综合开发公司,贵州贵阳550000

出　　处：《江西建材》2024年第11期298-300,306,共4页

摘　　要：为提升市政道路工程的施工质量,文中以贵州贵阳某市政道路工程为例,就不同因素对路基压实状态固有频率的影响进行试验。结果表明,随着含水率的增加,砂土干密度先增加后减少,最佳含水率为10.5%;随着土样高度的增加,加速度峰值先增加后降低,当土样高度为13 cm时,加速度峰值最大为0.56 m/s^(2);所有频率条件下频谱幅值先增加后降低;随着试样直径增加,加速度峰值呈先上升后下降;随着直径的增加,频谱幅值先增加后降低。综上可知,最优土体直径为20 cm,最佳试样高度为13 cm。In order to improve the construction quality of municipal road engineering,taking a municipal road project in Guiyang,Guizhou as an example,the effects of different factors on the natural frequency of subgrade compaction state were tested.The results show that with the increase of water content,the dry density of sand increases first and then decreases,and the optimal water content is 10.5%.With the increase of soil sample height,the peak value of acceleration increases first and then decreases.When the soil sample height is 13 cm,the maximum peak value of acceleration is 0.56 m/s^(2).Under all frequency conditions,the spectrum amplitude increases first and then decreases.With the increase of sample diameter,the peak acceleration increases first and then decreases.With the increase of diameter,the amplitude of the spectrum first increases and then decreases.In summary,the optimal soil sample diameter is 20 cm,and the optimal sample height is 13 cm.

关 键 词：市政道路 路基工程 锤击作用 土样高度 土样直径 固有频率 

分 类 号：TU99[建筑科学—市政工程]