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요약정보
铁路碎石路基碾压效果的数值模拟 / Numerical Simulation of Roller Compaction of Coarse Granular Soil
Resource Type
Academic Journal
Authors
徐京海
;
徐宇冉
;
张远博
;
XU Jinghai
;
XU Yuran
;
ZHANG Yuanbo
Source
铁道学报 / Journal of the China Railway Society
. 45(5):113-118
Subject
铁路路基
压实过程
数值计算
孔隙率
沉降量
离散元法
Language
Chinese
ISSN
1001-8360
Online Access
Scopus
Find it @ DONGA
초록
离散元法广泛应用于碎石路基压实、破碎过程的模拟分析.拟通过对碎石路基压实过程进行离散单元仿真模拟分析,建立碎石路基沉降量与碾压遍数的拟合关系,分析碎石路基摊铺厚度、碾压速度、材料刚度参数、材料强度系数等对碎石路基沉降量的影响,来揭示颗粒碾压破碎过程和破碎规律.研究结果表明,碎石路基摊铺厚度越大,碾压速度越快,碎石材料刚度系数越大,达到稳定状态所需碾压遍数越多;材料刚度系数及强度系数决定稳定状态下的沉降量.为研究碎石路基压实破碎研究提供新方法,是对碎石路基现场碾压试验研究的补充.
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