A centrifuge study of the seismic response of pile-raft systems embedded in soft clay

Zhang L.; Goh S. H.; Yi J.

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A centrifuge study of the seismic response of pile-raft systems embedded in soft clay

机译：离心研究软黏土桩筏系统的地震反应

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A series of centrifuge tests were performed on a 4 x 3 pile-raft system embedded in soft kaolin clay to investigate the pile bending moment and raft acceleration response under seismic excitation. Two types of far-field ground motions were employed, these being representative of the short-and long-duration ground motions arising from the Great Sumatran Fault and the Sunda Subduction Trench, respectively. The influences of the peak base acceleration, pile type and raft mass on raft acceleration and pile bending moment responses were studied in the centrifuge tests. Furthermore, based on the present and previous relevant centrifuge test results, correlations were derived to respectively estimate the peak raft acceleration and the maximum bending moment generated near the pile head during the shaking events. Despite some scatter in these correlations, they can be useful in engineering design practice for obtaining quick first-order estimates of the seismic response of pile-raft systems embedded in soft soils.

机译：在嵌于软高岭土中的4 x 3桩筏系统上进行了一系列离心试验，以研究地震激励下的桩弯矩和筏板加速度响应。采用了两种类型的远场地面运动，分别代表了大苏门答腊断裂和the他俯冲海沟引起的短时和长时地面运动。在离心机试验中研究了峰值基加速度，桩类型和筏质量对筏加速度和桩弯矩响应的影响。此外，根据当前和以前的相关离心机测试结果，推导相关性以分别估计振动过程中在桩头附近产生的峰值筏加速度和最大弯矩。尽管这些相关性有一些分散性，但它们在工程设计实践中对于获取嵌入软土中的桩筏系统的地震响应的快速一阶估计是有用的。

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来源
《Geotechnique》 |2017年第6期|479-490|共12页
作者
Zhang L.; Goh S. H.; Yi J.;
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作者单位

Huazhong Univ Sci & Technol, Sch Civil Engn & Mech, Wuhan, Hubei, Peoples R China|Natl Univ Singapore, Dept Civil & Environm Engn, Singapore, Singapore;

Natl Univ Singapore, Dept Civil & Environm Engn, Singapore, Singapore;

Chongqing Univ, Coll Civil Engn, Chongqing, Peoples R China;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类
关键词
centrifuge modelling; clays; earthquakes; piles piling; rafts; soil/structure interaction;

机译：离心机建模;粘土;地震;桩与桩;筏;土壤/结构相互作用;

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专利

1. Estimation of peak acceleration and bending moment for pile-raft systems embedded in soft clay subjected to far-field seismic excitation [J] . Goh Siang Huat, Zhang Lei Journal of geotechnical and geoenvironmental engineering . 2017,第11期

机译：远场地震激励作用下软黏土桩筏系统峰值加速度和弯矩的估算
2. Seismic response of pile-raft system embedded in spatially random clay [J] . Liu Yong, Zhang Lei Geotechnique . 2019,第7期

机译：空间随机黏土中桩筏系统的地震反应
3. Seismic response of pile-raft system embedded in spatially random clay [J] . Liu Yong, Zhang Lei Geotechnique . 2019,第7期

机译：空间随机粘土中嵌入桩筏系统的地震反应
4. Effect of pile type and pile head fixity on the seismic response of a 5 × 5 pile-raft system embedded in a soft clay subjected to far-field ground motions [C] . L. Zhang, H.B. Liu Australian Conference on the Mechanics of Structures and Materials . 2017

机译：桩型和桩头固定性对嵌入式粘土中的5×5桩筏系统抗震反应的影响
5. Evaluation of Nonlinear Site Response of Soft Clay Using Centrifuge Models. [D] . Afacan, Kamil Bekir. 2014

机译：使用离心模型评估软黏土的非线性场地响应。
6. Frequency Response Stabilization and Comparative Studies of MET Hydrophone at Marine Seismic Exploration Systems [O] . Egor Egorov, Anna Shabalina, Dmitry Zaitsev, 2020

机译：海洋地震勘探系统中MET水听器的频率响应稳定与比较研究
7. Centrifuge Modeling of Cyclic Softening in Low Plasticity Clays Partially Induced by Seismic Soil-Structure Interaction [O] . Jason M. Buenker, Scott J. Brandenberg, Jonathan P. Stewart 2020

机译：地震土结构相互作用部分诱导的低塑性粘土中循环软化的离心模型

A centrifuge study of the seismic response of pile-raft systems embedded in soft clay

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