[1]刘晶波,安志尧,宝鑫.地下结构抗震性能土工模型箱拟静力试验中土体尺寸的影响研究[J].地震工程与工程振动,2021,41(03):011-21.[doi:10.13197/j.eeev.2021.03.11.liujb.002]
 LIU Jingbo,AN Zhiyao,BAO Xin.Study on the influence of soil size in pseudo-static test of soil model box for seismic performance of underground structure[J].EARTHQUAKE ENGINEERING AND ENGINEERING DYNAMICS,2021,41(03):011-21.[doi:10.13197/j.eeev.2021.03.11.liujb.002]
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地下结构抗震性能土工模型箱拟静力试验中土体尺寸的影响研究
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《地震工程与工程振动》[ISSN:/CN:]

卷:
41
期数:
2021年03
页码:
011-21
栏目:
论文
出版日期:
2021-06-30

文章信息/Info

Title:
Study on the influence of soil size in pseudo-static test of soil model box for seismic performance of underground structure
作者:
刘晶波 安志尧 宝鑫
清华大学 土木工程系, 北京 100084
Author(s):
LIU Jingbo AN Zhiyao BAO Xin
Department of Civil Engineering, Tsinghua University, Beijing 100084, China
关键词:
地下结构抗震性能土工模型箱土体尺寸拟静力试验土-结构相互作用
Keywords:
underground structureseismic performancesoil model boxsoil sizepseudo-static testsoil-structure interaction
分类号:
TU93TU411
DOI:
10.13197/j.eeev.2021.03.11.liujb.002
摘要:
随着地下空间的开发和地铁、隧道等地下结构的大规模建设,地下结构的抗震性能受到重视。相比于地上结构抗震性能研究的丰富成果,地下结构抗震性能的研究还远远落后,试验成果相对缺乏。地下结构土工模型箱拟静力试验可以较为合理地反映土与结构的相互作用,是一种适用于地下结构抗震性能研究的试验技术手段。在该试验中,模型箱内土体的尺寸是重要的试验参数,可能会对试验结果产生重要影响。因此,如何确定合理的土体尺寸是地下结构土工模型箱拟静力试验中应该研究的重要内容之一。文中以地下单跨结构为例,通过数值模拟研究了地下结构土工模型箱拟静力试验中土体尺寸对试验结果的影响。结果表明,地下结构土工模型箱拟静力试验中土体尺寸对地下结构抗震性能产生影响,地下结构抗震性能拟静力试验中结构周围的土体不宜忽略;在这一试验中存在一个合理的土体尺寸取值范围,当模型箱内的土体尺寸控制在该范围内时,既可以有效反映土体对地下结构的约束作用,又可以合理地反映地下结构的受力状态,确保获得可信的试验结果,同时有助于适当减小试验中的用土量。文中通过对比分析,给出了典型地下单跨结构拟静力试验中土体尺寸的建议取值。研究结果对地下结构土工模型箱拟静力试验的设计具有参考价值。
Abstract:
With the development of underground space and the large-scale construction of underground structures such as subways and tunnels, the seismic performance of underground structures has became a focused research topic. Compared with the rich results of the seismic performance of the aboveground structures, the research on the seismic performance of the underground structures, especially the experimental study, is still far behind. The pseudo-static test of soil model box for seismic performance of underground structure, which can reflect the interaction of soil and structure reasonably, is a kind of experimental techniques suitable for the study of seismic performance of underground structures. The size of the soil in the model box is an important parameter which may have an important impact on the test results. Therefore, the determination of the reasonable soil size becomes one of the most important contents that should be studied in the pseudo-static test of soil model box for underground structure. Taking the underground single-span structure as an example, this paper studies the influence of the soil size in the pseudo-static test of soil model box for underground structure through numerical simulation. The results show that the soil size in the pseudo-static test of soil model box for underground structure has an impact on the seismic performance of the underground structure, and the soil around the structure should not be ignored in the pseudo-static test for the underground structure. Besides, there is a reasonable range of soil size in this experiment. When the size of the soil in the model box is controlled within this range, the pseudo-static test can not only effectively reflect the restraining effect of the soil on the underground structure, but also reasonably reflect the stress state of the underground structure. At the same time, the proper soil size helps reduce the amount of soil used in the test. Through comparative analysis, the recommended values of soil size in pseudo-static test of typical underground single-span structures are given. The research results provide some insights for the design of pseudo-static test of soil model box for underground structure.

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备注/Memo

备注/Memo:
收稿日期:2020-07-08;改回日期:2020-10-07。
基金项目:国家自然科学基金项目(U1839201);国家重点研发计划资助项目(2018YFC1504305)
作者简介:刘晶波(1956-),男,教授,博士,主要从事结构抗震和防灾减灾研究.E-mail:liujb@tsinghua.edu.cn
通讯作者:宝鑫(1992-),男,助理研究员,博士,主要从事海洋工程与地下结构抗震研究.E-mail:baox@mail.tsinghua.edu.cn
更新日期/Last Update: 1900-01-01