地震工程学报2018，Vol.40Issue(1)：166-170,5.DOI:10.3969/j.issn.1000-0844.2018.01.166
强夯振动加速度的量测及现场试验研究
Measurement and Field Test Research on Vibration Acceleration of Dynamic Compaction
摘要
Abstract
As a kind of foundation treatment method,dynamic compaction can quickly improve the bearing capacity and compressive modulus of foundations,with characteristics such as short duration,good effect,and low cost.However,the huge vibration waves caused by dynamic com-paction tend to affect the stability of surrounding buildings and slopes.Therefore,it is of great theoretical and practical significance to study the propagation law of dynamic compaction vibra-tion waves.In this study,combined with the monitoring scheme of a terrain design used in a dy-namic compaction foundation proj ect in the Yan'an New Area,we selected a site in the filling area in order to conduct field tests on the vibration acceleration of dynamic compaction.Based on these field tests,the propagation law of dynamic compaction vibration waves along the horizontal and the slope directions,respectively,were analyzed,and the effect of the energy level on the vibra-tion acceleration was discussed.The results show that both the radial and vertical acceleration values of the vibration waves decrease with the increase of distance from the tamping point.At the same distance from the tamping point,the vertical and radial acceleration values along the horizontal direction were greater to those along the direction of the ramp.With the increase of en-ergy level,the dynamic compaction waves were enhanced,and then both the radial and vertical accelerations at the same distance from the tamping point increased significantly.关键词
延安/强夯/振动加速度Key words
Yan'an/dynamic compaction/vibration acceleration分类
建筑与水利引用本文复制引用
李盼盼,王家鼎,谷天峰,刘亚明..强夯振动加速度的量测及现场试验研究[J].地震工程学报,2018,40(1):166-170,5.基金项目
国家自然科学基金面上项目(41372269) （41372269）
中国地质调查局地质调查项目(121201011000150022) （121201011000150022）
陕西省科技统筹创新工程计划课题(2012KTDZ03-02) （2012KTDZ03-02）
