...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Soil Dynamics and Earthquake Engineering >Seismic assessment and retrofit of two heritage-listed R/C elevated water storage tanks
【24h】

Seismic assessment and retrofit of two heritage-listed R/C elevated water storage tanks

机译：两个列入遗产名录的R / C高架储水箱的抗震评估和改造

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

A seismic assessment and advanced retrofit study on two heritage-listed reinforced concrete (R/C) elevated water storage tanks is presented in this paper. The two structures were built between the late 1920s and the early 1930s as water suppliers for a coal power plant in Santa Maria Novella Station in Florence, and are still in service. The first, taller tank has a R/C frame supporting structure and is currently used as water supplier for trains and platform services. The second, shorter tank, with a shaft-shell supporting structure, is used as water tower for the Station. The dynamic behaviour of the fluid is simulated by means of a classical convective and impulsive mass model, for which a discrete three-dimensional schematization is originally implemented in the finite element analysis. The time-history assessment enquiry highlights numerical collapse of the frame structure in the taller tank, and unsafe tensile stress states in a large portion of the shaft structure of the shorter one, under seismic action scaled at the maximum considered earthquake level. Based on these results, two retrofit hypotheses are proposed, and namely a dissipative bracing system incorporating pressurized fluid viscous spring-dampers, for the taller tank, and a base isolation system including double curved surface sliders, for the shorter one. The mechanical parameters, design criteria and technical implementation details of the two rehabilitation strategies are illustrated. The verification time-history analyses in protected conditions show that a substantial enhancement of the seismic response capacities of both structures is attained as compared to their original configurations, with little architectural intrusion, quick installation works and competitive costs. (C) 2015 Elsevier Ltd. All rights reserved.
机译：本文介绍了对两个列入遗产名录的钢筋混凝土（R / C）高架储水箱的地震评估和高级改造研究。这两个结构建于1920年代末至1930年代初之间，是佛罗伦萨佛罗伦萨圣玛丽亚中篇小说站的一家燃煤电厂的水供应商，目前仍在使用。第一个较高的水箱具有R / C框架支撑结构，目前用作火车和站台服务的水供应商。第二个较短的水箱带有轴壳支撑结构，用作车站的水塔。流体的动态行为是通过经典的对流和脉冲质量模型进行仿真的，为此，最初在有限元分析中实现了离散的三维示意图。时程评估查询突出显示了在较高的地震级别下进行地震作用时，较高的水箱框架结构的数值崩溃，以及较短的竖井结构的很大一部分中的不安全拉伸应力状态。基于这些结果，提出了两个改造假设，即对于较高的油箱，是一种采用加压流体粘性弹簧阻尼器的耗散支撑系统，对于较短的，则是包括双曲面滑块的基础隔离系统。说明了两种修复策略的机械参数，设计标准和技术实施细节。在保护条件下的验证时程分析表明，与原始结构相比，这两种结构的地震响应能力均得到了显着提高，几乎没有建筑入侵，安装工程快捷且成本低廉。 （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