钢轮与填筑体相互作用机理及压实质量智能无损检测  

Study on the Interaction between Steel Wheel and Filling Body and Intelligent Compaction Quality Detection

作　　者：杨祥 邸洪江 王庆远 薛冬 陈思德 YANG Xiang;DI Hongjiang;WANG Qingyuan;XUE Dong;CHEN Side(Hebei Xiongan Rongwu Expressway Co.,Ltd.,Xiongan Hebei 071000,China;College of Civil Engineering and Transportation,Hebei University of Technology,Tianjin 300401,China)

机构地区：[1]河北雄安荣乌高速公路有限公司,河北雄安071000 [2]河北工业大学土木与交通学院,天津300401

出　　处：《交通节能与环保》2023年第2期184-190,共7页Transport Energy Conservation & Environmental Protection

基　　金：高速公路智能建造装备技术与应用示范(KT-4)。

摘　　要：决定高速公路工程建造质量的关键因素是填料和碾压,工程质量的重点在于压实质量的控制。本文基于碾压钢轮对土体振动压实过程的研究,建立钢轮与填筑体相互作用模型,土体在振动压实过程中会发生黏弹塑性变化,碾压机的移动和移动速度会影响土体与振动轮的相互作用关系;设计试验研究土体振动压实过程中物理力学性质变化,利用颗粒流程序PFC3D建立离散元模型,模拟振动压实过程,研究振动压实过程中土颗粒运动状态,土体孔隙率、应力变化。面波瑞利波检测压实质量是一种方便、快捷、无损的检测方法,可基于波速理论检测压实质量,对瑞利波频散曲线的提取、正反演过程进行研究,设计试验,检测土体压实质量。The key factors determining the construction quality of expressway project are filling and rolling,and the focus of project quality lies in the control of compaction quality.Based on the research on the vibration compaction process of soil by rolling steel wheel,the interaction model between steel wheel and filling body is established.The soil will change viscoelastoplastic in the process of vibration compaction,and the movement and speed of roller will affect the interaction between soil and vibrating wheel.Experiments were designed to study the changes of physical and mechanical properties of soil in the process of vibratory compaction.We established a discrete element model by using particle flow program PFC3D to simulate the process of vibratory compaction,and studied the movement state of soil particles,the changes of soil porosity and stress in the process of vibratory compaction.Surface wave Rayleigh wave testing compaction quality is a convenient,fast and nondestructive testing method.It can test compaction quality based on wave velocity theory,study the extraction and forward and inverse process of Rayleigh wave dispersion curve,design tests and test soil compaction quality.

关 键 词：道路工程 相互作用机理 离散元 瑞利波 压实质量 

分 类 号：U415.11[交通运输工程—道路与铁道工程]