...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Structural Safety >Fragility analysis and estimation of collapse status for transmission tower subjected to wind and rain loads
【24h】

Fragility analysis and estimation of collapse status for transmission tower subjected to wind and rain loads

机译：风雨荷载作用下输电塔的易损性分析与倒塌状态估计

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

In this paper, the fragility analysis and concept of critical collapse curve for transmission tower subjected to wind and rain loads are presented to acquire the collapse equivalent basic wind speed and most unfavorable combinations of wind and rain loads corresponding to collapse status. The calculating method for wind and rain loads is simplified and the error analysis is performed to validate its effectiveness. The concept of equivalent basic wind speed is used to conduct the fragility analysis of transmission tower subjected to wind and rain loads which avoid the complex formula of rain load and the choice of different combinations of basic wind speed and rain intensity, and then the concept of critical collapse curve is proposed to evaluate the collapse status of transmission tower. At last the influence of wind attack angle and wind spectrum on the fragility and critical collapse curves is discussed, and results show that the wind attack angle and wind spectrum have a great influence on fragility and critical collapse curves. In this study, it can be seen that the use of equivalent basic wind speed make it possible to conduct the fragility analysis under wind and rain loads and the proposed concept of critical collapse curve is very convenient to evaluate the collapse status for structures subjected to wind and rain loads. In addition, the rain load has a great contribution to the tower collapse and should be paid more attention during severe gales and thunderstorms. (C) 2015 Elsevier Ltd. All rights reserved.
机译：本文针对风雨荷载作用下的输电塔进行了脆性分析和临界倒塌曲线的概念，以求得倒塌当量的基本风速以及与倒塌状态相对应的最不利的风雨荷载组合。简化了风雨荷载的计算方法，并进行了误差分析，验证了其有效性。等效基本风速的概念用于进行风雨荷载作用下的输电塔的易损性分析，避免了复杂的雨荷载公式和基本风速与雨强的不同组合的选择，然后采用提出了临界倒塌曲线，以评价输电塔的倒塌状态。最后讨论了迎风角和风谱对脆性和临界塌陷曲线的影响，结果表明，迎风角和风谱对脆性和临界塌陷曲线有很大的影响。在这项研究中，可以看出，使用等效基本风速可以在风雨荷载下进行脆性分析，提出的临界坍塌曲线概念非常方便地评估受风结构的坍塌状态和雨量。另外，雨水负荷对塔的倒塌有很大的影响，在强烈的大风和雷暴天气中应引起更多注意。 （C）2015 Elsevier Ltd.保留所有权利。

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