[1]李嘉瑞,景立平,董瑞,等.ABAQUS模拟土-结构相互作用时人工边界的选取[J].地震工程与工程振动,2020,40(03):174-182.[doi:10.13197/j.eeev.2020.03.174.lijr.018]
 LI Jiarui,JING Liping,DONG Rui,et al.Artificial boundary selection when calculating soil-structure interaction with abaqus[J].EARTHQUAKE ENGINEERING AND ENGINEERING DYNAMICS,2020,40(03):174-182.[doi:10.13197/j.eeev.2020.03.174.lijr.018]
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ABAQUS模拟土-结构相互作用时人工边界的选取
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《地震工程与工程振动》[ISSN:/CN:]

卷:
40
期数:
2020年03
页码:
174-182
栏目:
论文
出版日期:
2020-06-30

文章信息/Info

Title:
Artificial boundary selection when calculating soil-structure interaction with abaqus
作者:
李嘉瑞 景立平 董瑞 汪刚 何斌
中国地震局 工程力学研究所, 中国地震局地震工程与工程振动重点实验室, 黑龙江 哈尔滨 150080
Author(s):
LI Jiarui JING Liping DONG Rui WANG Gang HE Bin
Institute of Engineering Mechanics, China Earthquake Administration;Key Laboratory of Earthquake Engineering and Engineering Vibration of China Earthquake Administration, Harbin 150080, China
关键词:
数值模拟人工边界地下结构动力响应问题
Keywords:
numerical simulationartificial boundaryunderground structuredynamic response problem
分类号:
TU93
DOI:
10.13197/j.eeev.2020.03.174.lijr.018
摘要:
利用有限元数值模拟方法研究半无限空间中的动力响应问题时,人工边界的选取对于计算结果的可靠性与准确性有直接的影响。本文利用ABAQUS有限元软件计算土-结构地震响应,分析了选用不同人工边界对计算结果的影响。通过与远置边界自由场和土-结构模型的数值结果对比,讨论了底边界分别采用固定边界和黏性边界;侧边界分别采用固定边界、绑定边界、竖向约束边界和黏性边界时的计算误差。研究表明,利用ABAQUS软件计算土-结构动力相互作用影响时,黏性边界适合作为非刚性地基问题的底边界,固定边界适合作为刚性地基问题底边界。对于侧向边界当采用相对计算宽度较小模型时,固定边界和黏性边界无法再现自由场和土-结构响应;绑定边界和竖向约束边界可以模拟精确的自由场响应,并在动力土-结构作用分析中具有良好的性能。
Abstract:
When using the finite element numerical simulation method to study the dynamic response problem in semi-infinite space, the selection of artificial boundary has a direct impact on the reliability and accuracy of the calculation results. In this paper, the ABAQUS finite element software is used to calculate the soil-structure seismic response, and the influence of different artificial boundaries on the calculation results is analyzed. By comparing with the numerical results of the free-field and soil-structure models of the remote boundary, the fixed boundary and the viscous boundary are used respectively. The calculation of the boundary with fixed boundary, bound boundary, vertical constraint boundary and viscous boundary is discussed. error. The research shows that when using ABAQUS software to calculate the influence of soil-structure dynamic interaction, the viscous boundary is suitable as the bottom boundary of the non-rigid foundation problem, and the fixed boundary is suitable as the bottom boundary of the rigid foundation problem. For lateral boundaries, when using a model with a relatively small calculated width, the fixed and viscous boundaries cannot reproduce the free field and soil-structure response. Binding boundary and vertical constraint boundary can simulate accurate free-field response and have good performance in dynamic soil-structure interaction analysis.

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备注/Memo

备注/Memo:
收稿日期:2019-11-04;改回日期:2020-01-26。
基金项目:国家重点研发计划项目(2016YFC0800205);国家自然科学基金项目(51438004)
作者简介:李嘉瑞(1993-),男,硕士研究生,主要从事地下工程抗震研究.E-mail:kokocc@126.com
通讯作者:景立平(1963-),男,研究员,主要从事岩土地震工程、工程结构抗震研究.E-mail:jlp_iem@163.com
更新日期/Last Update: 1900-01-01