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首页> 外文期刊>Thin-Walled Structures >Buckling analysis of steel jacking pipes embedded in elastic tensionless foundation based on spline finite strip method
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Buckling analysis of steel jacking pipes embedded in elastic tensionless foundation based on spline finite strip method

机译：基于样条有限条法的弹性无张力地基内顶进钢管屈曲分析

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摘要

Buckling of steel jacking pipes subjected to axial compression and surrounded by soil is investigated. The jacking pipes are simplified as simply-supported circular cylinders embedded in tensionless Winkler-Pasternak foundation that reacts to soil compression only. The governing equation for tensionless buckling analysis is established based on the spline finite strip method (SFSM), and the critical buckling load is obtained by solving the governing equation through an iterative procedure. Numerical examples are analyzed, and the comparison of buckling loads with available solutions and finite element results shows good accuracy of the SFSM. Based on a parametric study, the variation of tensionless buckling loads with slenderness ratio of jacking pipes is first studied. Moreover, the effects of diameter-thickness ratio and foundation stiffness are also investigated. The present SFSM-based tensionless buckling analysis is applicable to cylinders of any length and on tensionless foundation, and it is capable of efficiently and effectively predicting buckling of steel jacking pipes subjected to axial compression and surrounded by soil.
机译：研究了受轴向压缩并被土壤包围的钢制顶管的屈曲。顶管简化为嵌入在无张力Winkler-Pasternak基础中的简单支撑圆柱体，该基础仅对土壤压缩起反应。基于样条有限条法（SFSM），建立了无张力屈曲分析的控制方程，通过迭代程序求解该控制方程，得到了临界屈曲载荷。分析了数值示例，并将屈曲载荷与可用解和有限元结果进行了比较，表明SFSM具有良好的精度。在参数研究的基础上，首先研究了无张力屈曲载荷随顶管细长比的变化。此外，还研究了直径-厚度比和基础刚度的影响。当前基于SFSM的无张力屈曲分析适用于任何长度和无张力基础上的圆柱体，并且能够有效地预测受轴向压缩并被土壤包围的顶管的屈曲。

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  • 来源
    《Thin-Walled Structures》 |2018年第9期|449-457|共9页
  • 作者

    Yanli Wang; Pizhong Qiao; Linjun Lu;

  • 作者单位

    State Key Laboratory of Ocean Engineering, Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration, School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University;

    State Key Laboratory of Ocean Engineering, Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration, School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University,Department of Civil and Environmental Engineering, Washington State University;

    State Key Laboratory of Ocean Engineering, Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration, School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University;

  • 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

    Buckling; Spline finite strip method (SFSM); Tensionless foundation; Jacking pipes; Cylinders;

    机译：屈曲;样条有限条法;无张力地基;顶管;缸;

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