高填方路基增压补强强夯试验研究

结合厦蓉高速(漳州段)改扩建工程,利用现代检测技术(瑞利波),通过对面波检测试验和现场灌砂法试验,得出试验段路基压实度与瑞利波波速成正比关系;基于瑞利波波速与压实度关系,对高填方路基增压补强强夯前后瑞利波波速的检测与分析,提出砾砂类填料高填方路基增压补强强夯有效密实深度修正指标,以此参数对强夯施工质量进行控制.

Experimental Study on Dynamic Compaction of Pressurization and Reinforcement of High Fill Subgrade

Combined with the expansion project of Xiamen—Chengdu expressway (Zhangzhou section), using the modern detection technology (Rayleigh wave), through the opposite wave detection test and the field sand filling test, it's obtained that the compaction degree of the test section is directly proportional to the Rayleigh wave velocity. Based on the relationship between Rayleigh wave velocity and compaction degree, the detection and analysis of Rayleigh wave velocity before and after pressurized reinforcement dynamic compaction of high fill subgrade is carried out, and the correction index of effective compaction depth of pressurized reinforcement dynamic compaction of high fill subgrade with gravel and sand filler is put forward, and the construction quality of dynamic compaction is controlled by this parameter.