[1]李立云,左晓,钟紫蓝.管-土相互作用模型试验的尺寸效应及可靠性分析[J].防灾科技学院学报,2017,19(02):1-8.
 Li Liyun,Zuo Xiao,Zhong Zilan.Size Effect and Reliability Analysis of the Model Test for Pipe-soil Interaction[J].JOURNAL OF INSTITUTE OF DISASTER PREVENTION,2017,19(02):1-8.
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管-土相互作用模型试验的尺寸效应及可靠性分析()
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《防灾科技学院学报》[ISSN:1673-8047/CN:13-1377/P]

卷:
第19卷
期数:
2017年02期
页码:
1-8
栏目:
目次
出版日期:
2017-06-30

文章信息/Info

Title:
Size Effect and Reliability Analysis of the Model Test for Pipe-soil Interaction
作者:
李立云左晓钟紫蓝
北京工业大学 城市与工程安全减灾教育部重点实验室,北京100124
Author(s):
Li Liyun Zuo Xiao Zhong Zilan
Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing University of Technology, Beijing 100124, China
关键词:
管-土相互作用模型试验尺寸效应可靠性分析模型箱尺寸
Keywords:
pipeline-soil interaction model test size effect reliability analysis the size of model box
分类号:
TU43
文献标志码:
A
摘要:
为了分析北京地区粉质黏土场地中管-土相互作用土弹簧模型参数,进行了一系列管土相互作用试验。由于人力、经费、场地等原因,模型箱尺寸无法取到无限大,模型箱的尺寸效应有可能使试验数据出现一定偏差。为了检验已开展模型试验结果的可靠性,基于ABAQUS有限元软件进行了数值仿真,探讨了土体的破坏模式,研究了管-土相互作用试验的尺寸效应,并得到如下结论:土体破坏模式可分为深埋和浅埋两种破坏模式;模型箱下方和后方边界对试验结果影响较小,当深径比大于6时,前方边界开始对试验结果产生影响。最后,分析和修正了试验结果并对类似试验中的模型箱尺寸选取给出了建议。
Abstract:
In order to analyze the parameters of soil spring model for the pipeline-soil interaction in the silty clay site in Beijing area, a series of pipe-silty clay interaction tests were carried out and the corresponding experimental results were obtained. Due to limitation of manpower, funding and the site, the size of model box cannot be taken to infinity. The size effect of the model box may lead to some deviation of the test data. To test the reliability of the model test results, the numerical simulation was done on the basis of ABAQUS finite element software, the failure mode of soil was discussed, and a study was conducted on the size effect of the pipe-soil interaction model. Some conclusions are gained as follows:there are altogether two kinds of soil failure mode——deep and shallow failure modes; the boundary below model box and the rear boundary exercises a minor influence on the test results. The depth diameter ratio exceeding six, the front boundary has a major influence on the experimental results. Finally, the results of experiment are analyzed and corrected, and some suggestions are made on the selection of the model box size in future similar experiments.

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备注/Memo

备注/Memo:
收稿日期:2017-03-13 基金项目:国家自然科学基金资助项目( 51278017, 51421005) 作者简介:李立云(1973—), 男, 博士,副教授,主要从事地震工程及岩土工程防灾减灾方面的研究。
更新日期/Last Update: 1900-01-01