[1]李 博,陈亮亮.弯曲伸缩元技术在岩土工程中的应用[J].防灾减灾工程学报,2019,39(01):117-123.[doi:10.13409/j.cnki.jdpme.2019.01.016]
 LI Bo,CHEN Liangliang.Development of Bender Element Technique in Geotechnical Engineering[J].Journal of Disaster Prevention and Mitigation Engineering,2019,39(01):117-123.[doi:10.13409/j.cnki.jdpme.2019.01.016]
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弯曲伸缩元技术在岩土工程中的应用()
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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:
117-123
栏目:
论文
出版日期:
2019-02-28

文章信息/Info

Title:
Development of Bender Element Technique in Geotechnical Engineering
文章编号:
1672-2132(2019)01-0117-07
作者:
李 博 陈亮亮
温州大学建筑工程学院, 浙江 温州 325000
Author(s):
LI Bo CHEN Liangliang
College of Civil Engineering and Architecture, Wenzhou University, Wenzhou 325000, China
关键词:
弯曲元技术 弯曲元信号 颗粒破碎 橡胶砂 黏土固结
Keywords:
bender element technique bender element signal particle crushing rubber-sand mixture clay consolidation
分类号:
TU411
DOI:
10.13409/j.cnki.jdpme.2019.01.016
文献标志码:
A
摘要:
地基安全稳定性问题一直是工程实践中亟待解决的问题。对于影响地基安全的地下砂土层和黏土层在不同状态下土粒宏微观力学特性变化的监测研究显得尤为重要。利用弯曲伸缩元技术对土体在一维压缩条件下的剪切波速和压缩波速变化进行监控; 通过砂土和黏土不同状态下弯曲元信号对比,探讨弯曲元技术在不同土体中的可行性及信号优化技术; 实验结果表明,弯曲元技术可以很好地完成对砂土一维高压下的颗粒破碎、橡胶砂混合物力学性能变化以及黏土固结过程中强度变化的过程监测; 同时确定了不同土体最优弯曲元信号参数。
Abstract:
Foundation security stability is an urgent problem in engineering practice.Therefore, the study of sand and soil layers' micro-macro mechanical characteristic at different stress conditions which would affect foundation security shows a great importance.In this paper, bender element technique would be used to monitor the evolution of soil's shear wave velocity and compressional wave velocity under one-dimensional compression condition.And the feasibility of bender element technique at different soil condition would be researched by making a comparison of bender element signal between sand and soil.The results showed that bender element technique could greatly monitor the process of particle crushing under high one-dimensional compression, mechanical behavior of rubber-sand mixture and soil's strength change during consolidation process.And the optimal parameters about bender element at different soils have been determined.

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备注/Memo

备注/Memo:
收稿日期:2017-09-26; 修回日期:2017-12-08 基金项目:浙江省自然基金项目(LY17E080012)、温州市科技局项目(G20160009)资助 作者简介:李 博(1982-),男,副教授,博士。主要从事岩土工程颗粒材料的研究。Email: autumnlibo@gmail.com
更新日期/Last Update: 2019-02-20