基于Winkler地基模型落石冲击力计算方法研究

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• 英文论文题名：Research on the Calculation Method of Rock-fall Impact Force Based on Winkler Foundation Model
• 论文作者：袁松 ; 黎良仆 ; 甘立松
• 英文论文作者：YUAN Song ; LI Liangpu ; GAN Lisong ; Sichuan Communication Surveying and Design Institute ; Sichuan University
• 年：2016
• 作者机构：四川省交通运输厅交通勘察设计研究院;四川大学;
• 论文关键词：落石冲击力 ; 计算方法 ; Winkler地基模型
• 英文论文关键词：Rock-fall impact force ; Calculation method ; Winkler foundation model
• 会议召开时间：2016-10-24
• 会议录名称：2016中国隧道与地下工程大会（CTUC）暨中国土木工程学会隧道及地下工程分会第十九届年会论文集
• 语种：中文
• 分类号：U416.1
• 学会代码：OGTY
• 会议名称：2016中国隧道与地下工程大会（CTUC）暨中国土木工程学会隧道及地下工程分会第十九届年会
• 会议地点：中国四川成都
• 主办单位：中国土木工程学会隧道及地下工程分会
• 学会名称：中国土木工程学会
• 页数：6
• 文件大小：725k
• 原文格式：O
• 会议级别：全国

摘要

本文基于接触力学、Winkler地基模型,考虑土石回填层厚度,落石质量、冲击速度、回填层弹塑性变形等,提出落石冲击力计算方法,其能很好地反映落石的冲击过程;通过与Hertz弹性碰撞理论、数值仿真计算同精度对比,其计算结果能准确地计算落石冲击力大小,与数值仿真计算的偏差最小仅1.91%;与国内外具有代表性的5种计算方法对比,其计算所得为全过程的最大冲击力而并非平均冲击力,计算结果最大,可为工程建设提供更加合理的设计依据。
Based on contact mechanics and Winkler foundation model,calculation method of the rock-fall impact was put forward in this paper and it can well reflect the impact process of rock fall,considering factors including the earth-rock backfill layer thickness,qualityof rock fall,impact speed,plastic deformation of backfill layer and so on.Compared with Hertz elastic collision theory and numerical simulation calculation of same accuracy,its results can also accurately calculate the value of rock fall impact and the minimum deviation with numerical simulation calculation is only 1.91%.With the comparison of five representative kinds of calculation methods at home and abroad,this result is the maximum impact of whole process rather than the average impact force and its value is the largest,the former which can provide design basis for engineering construction.

引文

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