基于压实度控制的旧路堤夯击能确定方法研究  

Research on Determination of Tamping Energy of Old Embankment Based on Compactness Control

作　　者：车华桥[1] 崔新壮[1] 欧金秋[1] 刘乃科[1] 

机构地区：[1]山东大学士建与水利学院,济南市250061

出　　处：《公路》2010年第8期98-102,共5页Highway

基　　金：国家自然科学基金,项目编号50708056;山东省优秀中青年科学家科研奖励基金,项目编号2008BS09015;山东省科技攻关项目,项目编号2008GG10006009

摘　　要：采用强夯法处理高速公路改建中旧路堤压实度偏低的问题,满足压实度规范要求的夯击能的确定是路堤强夯的关键问题。以威乳高速公路改建工程为依托,用动态有限差分法对夯锤与路堤的相互作用过程进行了动态模拟,基于压实度控制标准,确定强夯影响深度与平均竖向残余应变的关系。采用量纲分析法和数值分析法确定夯击能与各土力学参数的关系,从而对威乳路试夯结果进行一般性推广,得到了不同高度路堤夯击能确定方法。In order to meet the requirements of the old embankment compaction in the expressway reconstruction,the determination of tamping energy is the key problem in the application technology of dynamic compaction.In the Weihai-Rushan Expressway reconstruction engineering,the interaction process of the hammer and embankment is dynamic simulated,and the relation of the influence depth and the average vertical residual strain is determined based on the compactness control.So the relations of the tamping energy and soil mechanics parameters are obtained through dimensional analysis and numerical analysis.The dynamic compaction test results are generalized and the determination of tamping energy of embankments with different height is put forward.

关 键 词：道路改建 压实度 强夯 夯击能 影响深度 

分 类 号：U418.8[交通运输工程—道路与铁道工程]