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首页> 外文期刊>Computers and Geotechnics >A new approach for estimating the vertical elastic settlement of a single pile based on the fictitious soil pile model
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A new approach for estimating the vertical elastic settlement of a single pile based on the fictitious soil pile model

机译：一种基于虚拟土桩模型估算单桩垂直弹性沉降的新方法

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摘要

The development of settlement at pile heads due to vertical loads is one of the most important factors in pile design. For large-scale pile-supported infrastructure and elevated roads, the cumulative plastic deformation caused by cyclic loads could be so dangerous that only elastic deformation is permitted. However, existing methods rely heavily on measurements from field tests, while only a few analytical approaches have been developed based on the Winkler model or load transfer functions, which are mostly empirical. Moreover, present theories can hardly unify the computation of end-bearing piles and floating piles, since the classification between these two types of piles is often ambiguous. In this study, a new approach based on the fictitious soil pile model is proposed, and a semi-analytical is derived. The efficacy of the solution is demonstrated via comparisons against measured curves in the field and rigorous numerical results. Finally, a parametric study is performed to investigate the influence of pile and soil properties and the existence of a strong or weak soil interlayer on the vertical settlement of a single pile. On this basis, a new pile design factor referred as ?optimal aspect ratio? is proposed to acquire suitable pile dimensions.
机译：由于垂直载荷引起的桩头沉降的发展是桩设计中最重要的因素之一。对于大型堆积支持的基础设施和高架的道路，循环负载引起的累积塑性变形可能是如此危险，只有允许弹性变形。然而，现有方法严重依赖于现场测试的测量，而仅基于Winkler模型或负载传递函数开发了几种分析方法，这主要是经验的。此外，目前的理论可能几乎无法统一终端桩和浮桩的计算，因为这两种类型的桩之间的分类通常是模糊的。在这项研究中，提出了一种基于虚拟土桩模型的新方法，衍生出半分析。通过对现场和严格的数值结果的测量曲线进行比较来证明溶液的功效。最后，进行参数化研究以研究桩和土壤性质的影响以及在单桩垂直沉降上的强或弱土层间的存在。在此基础上，新的桩设计因素称为？最佳纵横比？建议获得合适的桩尺寸。

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  • 来源
    《Computers and Geotechnics》 |2021年第6期|104100.1-104100.13|共13页
  • 作者

    Zhang Yunpeng; Wu Wenbing; Jiang Guosheng; Wen Minjie; Wang Kuihua; El Naggar M. Hesham; Ni Pengpeng; Mei Guoxiong;

  • 作者单位

    China Univ Geosci Fac Engn Zhejiang Inst Wuhan 430074 Hubei Peoples R China;

    China Univ Geosci Fac Engn Zhejiang Inst Wuhan 430074 Hubei Peoples R China|Zhejiang Univ Res Ctr Coastal Urban Geotech Engn Hangzhou 310058 Peoples R China|Western Univ Geotech Res Ctr Dept Civil & Environm Engn London ON N6A 5B9 Canada|Guangxi Univ Coll Civil Engn & Architecture Guangxi Key Lab Disaster Prevent & Struct Safety Nanning 530004 Guangxi Peoples R China;

    China Univ Geosci Fac Engn Zhejiang Inst Wuhan 430074 Hubei Peoples R China;

    Zhejiang Univ Res Ctr Coastal Urban Geotech Engn Hangzhou 310058 Peoples R China;

    Zhejiang Univ Res Ctr Coastal Urban Geotech Engn Hangzhou 310058 Peoples R China;

    China Univ Geosci Fac Engn Zhejiang Inst Wuhan 430074 Hubei Peoples R China|Western Univ Geotech Res Ctr Dept Civil & Environm Engn London ON N6A 5B9 Canada;

    Guangxi Univ Coll Civil Engn & Architecture Guangxi Key Lab Disaster Prevent & Struct Safety Nanning 530004 Guangxi Peoples R China|Sun Yat Sen Univ Sch Civil Engn Zhuhai 519082 Guangdong Peoples R China;

    China Univ Geosci Fac Engn Zhejiang Inst Wuhan 430074 Hubei Peoples R China|Guangxi Univ Coll Civil Engn & Architecture Guangxi Key Lab Disaster Prevent & Struct Safety Nanning 530004 Guangxi Peoples R China;

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  • 正文语种 eng
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  • 关键词

    Fictitious soil pile model; Unified solution; End-bearing pile; Floating pile; Vertical settlement estimation;

    机译：虚拟土桩模型;统一解决方案;封端桩;浮桩;垂直结算估计;

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