[1]罗 杰,肖建春,马克俭,等.落石冲击下多种类型土壤缓冲性能研究[J].防灾减灾工程学报,2019,39(01):164-170.[doi:10.13409/j.cnki.jdpme.2019.01.023]
 LUO Jie,XIAO Jianchun,MA Kejian,et al.Buffering Capacity of Various Types Soil under Rockfall Impact Load[J].Journal of Disaster Prevention and Mitigation Engineering,2019,39(01):164-170.[doi:10.13409/j.cnki.jdpme.2019.01.023]
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落石冲击下多种类型土壤缓冲性能研究()
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防灾减灾工程学报[ISSN:1672-2132/CN:32-1695/P]

卷:
39卷
期数:
2019年01期
页码:
164-170
栏目:
论文
出版日期:
2019-02-28

文章信息/Info

Title:
Buffering Capacity of Various Types Soil under Rockfall Impact Load
文章编号:
1672-2132(2019)01-0164-07
作者:
罗 杰1 肖建春2 马克俭2 毛家意3 王青原2
1.中建四局第六建筑工程有限公司, 安徽 合肥 230011; 2.贵州大学空间结构研究中心,贵州 贵阳 550025; 3.贵阳市人民防空办公室, 贵州 贵阳 550003
Author(s):
LUO Jie1 XIAO Jianchun2 MA Kejian2 MAO Jiayi3 WANG Qingyuan2
1.China Construction Fourth Engineering Bureau Sixth Co., Ltd., Hefei 230011, China; 2.Space Structure Research Center, Guizhou University, Guiyang 550025, China; 3.Guiyang City People's Air Defense Office, Guiyang 550003, China
关键词:
落石冲击 土壤 冲击力 冲击力时程曲线 SPH-FEM模型
Keywords:
rockfall impact load soil impact force impact force-time history curve SPH-FEM model
分类号:
TU435
DOI:
10.13409/j.cnki.jdpme.2019.01.023
文献标志码:
A
摘要:
针对现有研究对落石灾害中不同类型土壤中落石的最大冲击力和冲击力变化规律偏差较大的情况,对落石在四种土壤中的冲击力进行研究。通过试验验证SPH-FEM方法在冲击力方面的适用性。采用SPH-FEM模型分析落石在四种土壤中的最大冲击力、冲击力时程曲线规律和在砂土中的冲击力时程曲线公式。分析结果表明:SPH-FEM数值模型能够准确用于研究落石在土层中的最大冲击力和冲击力时程曲线。四种土壤的缓冲性能顺序为砂土、黏土、壤土和黄棕壤。研究得到落石在四种土壤中的最大冲击力与落体直径、冲击速度的关系曲线以及在砂土中的冲击力时程曲线公式。
Abstract:
Large deviation between the maximum impact force and its variation of falling rocks in different types of soil has been reported by current research.In view of this, the impact force of falling rocks in four kinds of soil was studied.The applicability of the SPH-FEM method for impact force simulation was verified by experiments.A SPH-FEM model was used to analyze the maximum impact force and impact force-time history curves in four kinds of soil, and the time history curve in sandy soil.Results showed that the SPH-FEM numerical model can be used to study the maximum impact force and impact force-time history curve of rock in soil.The sequence of buffer capacity of four soils was sand, clay, loam, and yellow-brown soil.The time history curve of impact force of rock in the sand and the relationship among the maximum impact force, diameter, and impact velocity in the four soils were obtained in this study.

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备注/Memo

备注/Memo:
收稿日期:2017-05-05; 修回日期:2017-10-11 基金项目:国家自然科学基金(50978064)、贵州省自然科学基金(黔科合基础[2017]1054-1036)、贵州省自然科学基金(黔人防2017-01)资助 作者简介:罗 杰(1989-),男,博士。主要从事冲击和施工分析研究。Email:18798629842@163.com
更新日期/Last Update: 2019-02-20