...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Computers and Geotechnics >Recommendations for determining nonlinear Winkler spring parameters for buried steel pipe stress analysis applications
【24h】

Recommendations for determining nonlinear Winkler spring parameters for buried steel pipe stress analysis applications

机译：用于确定埋藏钢管应力分析应用的非线性Winkler弹簧参数的建议

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Permanent ground movements due to seismic fault rupture, ground subsidence or liquefaction-induced lateral spreading may result to failure of buried pipelines crossing the affected areas, due to the development of excessive bending and axial pipe strains. Verification of pipe integrity against such actions and design of mitigation measures is based on analyses with nonlinear beam-on-non-linear Winkler foundation models, where the soil reaction developing on a pipe as result of differential ground movements is modelled by means of elastoplastic springs. This note presents a new set of guidelines and expressions for determining the parameters of Winkler springs applicable to the analysis of steel pipes backfilled with sand and subjected to differential movement with a lateral, vertical-upwards and/or vertical-downwards component. The guidelines, collectively referred to as UoN recommendations, are accordingly employed in the parametric stress analysis of a buried steel pipe crossing an oblique seismic fault. Results of this parametric analysis demonstrate that adoption of the UoN recommendations in the analysis workflow results in considerably lower pipe axial and bending strains, compared to analyses based on current conservative methods, and thus more realistic and economical design solutions.
机译：由于地震发生故障破裂，地面沉降或液化引起的横向扩散可能导致埋入地区的埋入管道失效，由于过度弯曲和轴向管菌株的发展，可能导致埋入管道的失效。验证管道完整性对这些动作的验证和减缓措施的设计是基于与非线性光束的非线性Winkler基础模型的分析，其中由于差动接地运动而在管道上发育的土壤反应是通过弹性塑料弹簧进行建模的。本说明提供了一套新的准则和表达式，用于确定适用于用砂回填的钢管分析的钢管弹簧的参数，并经受横向，垂直向上和/或垂直向下部件的差动运动。因此，统一地称为UON推荐的指导方针，在埋藏钢管的参数应力分析中采用了倾斜抗震断层的参数应力分析。该参数分析的结果表明，与基于当前保守方法的分析相比，采用分析工作流程中的UON建议在分析工作流程中导致远低管轴向和弯曲菌株，更现实，经济的设计解决方案。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号