基于瑞雷波波速强夯法处理黄土地基参数评价方法  

Evaluation Method of Loess Foundation Parameters Based on Rayleigh Wave Velocity and Dynamic Compaction Method

作　　者：刘鹏宇 刘家乐 熊保林[1,2] 张赫 LIU Pengyu;LIU Jiale;XIONG Baolin;ZHANG He(Key Laboratory of Roads and Railway Engineering Safety Control of Ministry of Education,Shijiazhuang Tiedao University,Shijiazhuang 050043,China;School of Civil Engineering,Shijiazhuang Tiedao University,Shijiazhuang 050043,China)

机构地区：[1]石家庄铁道大学道路与铁道工程安全保障省部共建教育部重点实验室,河北石家庄050043 [2]石家庄铁道大学土木工程学院,河北石家庄050043

出　　处：《沈阳大学学报（自然科学版）》2024年第6期530-540,共11页Journal of Shenyang University：Natural Science

基　　金：河北省重点研发计划(20375504D)。

摘　　要：以澄韦高速黄土地区地基为依托,采用强夯法地基处理以消除黄土的湿陷性,处理后采用多道瞬态瑞雷面波法进行快速检测。通过建立瑞雷波波速与承载力、压实度指标的相关性,凭借少量的标定点或者依据经验公式间接得到整个场地所需的承载力、压实度等物理力学指标。分别采用对标定点平板载荷试验数据与标定点钻孔取样等方法,将测定所得实际数据与相对应点位的面波波速测试数据进行拟合,配合计算确定该黄土地区瑞雷面波波速与承载力、压实度的数学模型,从而判断黄土地基强夯法处理后的效果。Based on the foundation of the Chengwei Expressway in the loess area,the dynamic compaction method was used for foundation treatment to eliminate the collapsibility of the loess.After treatment,the multi-channel transient Rayleigh surface wave method was used for rapid detection.By establishing the correlation between Rayleigh wave velocity and bearing capacity,compaction degree indicators,the physical and mechanical indicators required for the entire site could be indirectly obtained based on a small number of calibration points or empirical formulas.By using methods such as benchmark point flat load test data and benchmark point drilling sampling,the actural measured data were fitted with the sarface wave velocity test data of the corresponding points,the mathematical model of Rayleigh surface wave velocity,bearing capacity,and compaction degree in the loess area was determined through calculation,in order to judge the effect of dynamic compaction method on loess foundation treatment.

关 键 词：黄土地基 瑞雷波波速 强夯法 压实度 地基承载力 

分 类 号：U416[交通运输工程—道路与铁道工程]