文献类型：期刊文献

中文题名：冲击碾压补强土石混填路基的振动影响试验研究

英文题名：Field Trial on Ground Vibration Induced by Rolling Dynamic Compaction on Subgrade Filled with Earth-Rock Mixtures

作者：陈忠清[1,2];江海鸿[1];吕越[1,2];朱文韬[1];吴天宇[1]

机构：[1]绍兴文理学院土木工程学院,浙江绍兴312000;[2]浙江省岩石力学与地质灾害重点实验室,浙江绍兴312000

年份：2022

卷号：42

期号：2

起止页码：24

中文期刊名：绍兴文理学院学报

外文期刊名：Journal of Shaoxing University

收录：国家哲学社会科学学术期刊数据库

基金：浙江省公益技术应用研究计划项目“基于次声技术的浙江地区岩质滑坡灾害监测预警关键技术研究”(2016C33052);绍兴市公益技术应用研究计划项目“冲击碾压技术加固绍兴地区浅层软土地基的应用研究”(2015B70034).

语种：中文

中文关键词：土石混填路基;冲击碾压;振动;安全距离;监测

外文关键词：subgrade filled with earth-rock mixtures;rolling dynamic compaction(RDC);vibration;safe distance;monitoring

中文摘要：冲击碾压技术已广泛应用于公路、机场及港口等工程的路基填筑或地基加固,其中冲击碾压施工引起的地面振动及其对周围环境的影响是工程实践中必须关注的问题.通过冲击碾压补强土石混填路基的现场振动监测,对冲击碾压振动衰减规律及振动影响范围进行研究.结果表明冲击碾压施工引起的地面振动以负幂函数形式逐渐衰减,距离振源2.5 m范围内产生的地面振动最为强烈,振动衰减规律与强夯相似,但振动强度明显小于强夯;冲击碾压振动影响的最小安全距离与牵引速度等因素相关,当牵引速度分别为8.0 km/h、10 km/h及12 km/h时,最小安全距离分别为8.2 m、8.6 m及14.6 m.

外文摘要：Rolling dynamic compaction(RDC)has been widely used in highway,airport and port projects for roadbed reclamation and ground improvement.The ground vibration caused by the implementation of the RDC and its impact on the surrounding environment are the problems that must be concerned in the engineering practice.The vibration attenuation rule and influence range of RDC vibration were studied through the field vibration monitoring of RDC for subgrade filled with earth-rock mixtures.The results show that the ground vibration caused by RDC construction attenuates gradually in the form of negative power function,and the most significant is the ground vibration generated within the range of 2.5 m from the vibration source.The vibration attenuation rule is similar to that of the dynamic compaction(DC),but the vibration intensity is obviously smaller than DC.The minimum safe distance affected by RDC vibration is caused by such factors as working speeds of RDC,etc.When the working speeds are of 8.0 km/h,10 km/h and 12 km/h,the corresponding minimum safe distances are 8.2m,8.6m and 14.6m,respectively.