施工技术 2016年6月上 50 CONSTRUCTION TECHNOLOGY 第45卷第11期 D0I:10.7672/8js2016110050 强夯法在皖江软土路基处理中的应用* 袁海平1 2，韩治勇1，石贤增3，浦玉炳3，朱大勇1 (1.合肥工业大学土木与水利工程学院，安徽合肥230009；2.中国矿业大学煤炭资源与安全开采国家 重点实验室，江苏徐州221116；3.合肥市市政设计院有限公司，安徽合肥230041) [摘要]软土路基因其土层分布复杂，物理力学性质差异较大，加固路基土体成为市政道路处理的迫切需要.依托 皖江城市带市政道路处理工程，分析了各遍强务下的加速度效应及夯坑沉降规律，并用荷载试验评价了强夯路基 的处理效果.研究结果表明，峰值加速度受夯点距离的影响，在近距离处峰值加速度较大，且衰减较快；随着距离 的增大，其值逐渐减小，且衰减量较小，地表加固距离大约为30m 竖直方向加固深度为6m左右；夯击次数对夯沉 量有重要影响，超过一定击数后，土体得不到加固；荷载试验得到了路基承载力特征值>120kPa 超过了其设计承 载力特征值. [关键词]公路工程；路基；强夯；软土；加速度；沉降；承载力 [中图分类号]U416.1 [文献标识码]A [文章编号]1002-8498(2016)11-0050-05 Application of Dynamic Compaction Method in Soft Soil Subgrade Treatment in Wanjiang Region Yuan Haiping'.2 Han Zhiyong' Shi Xianzeng Pu Yubing' Zhu Dayong' (1.School of Civil Engineering Hefei University of Technology Hefei Anhui 230009 China; 2.The State Key Laboratory of Coal Resources and Mine Safety China Unirersity of Mining and Technology Xuzhou Jiangsu 221116 China;3.Hefei Municipal Design Institute Co.Ld.Hefei Anhui 230041 China) Abstract:The distribution of soil in soft soil subgrade is plex.And physical and mechanical properties are of great difference.Therefore reinforeement of subgrade soil bees the urgent need of municipal road treatment.Relying on municipal road engineering in Wanjiang urban area the effect of acceleration and law of tamping pit settlements is analyzed each time under dynamic paction.The treatment effect of dynamic paction was evaluated based on the load test.Research results ...
强夯法在皖江软土路基处理中的应用.pdf
