• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Civil Engineering and Science >Seismic Enhancement of Coupled Shear Walls Using Shape Memory Alloys
【24h】

Seismic Enhancement of Coupled Shear Walls Using Shape Memory Alloys

机译：使用形状记忆合金增强剪力墙的抗震性能

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This paper investigates the effectiveness of Shape Memory Alloys (SMAs) in enhancing the seismic behavior of coupled shear walls. First, SMA braces or strands are implemented in the shear wall openings for repairing and retrofitting purposes. A finite element program, SeismoStruct, is used to evaluate the seismic behavior of the controlled structure. For retrofitting purpose, a multi story concrete shear wall building with and without SMA elements is exposed to El-centro earthquake record for 15 seconds, followed with 25 seconds of damped free vibration. For repairing purpose, the structure in the first 40 seconds, is excited with El-centro earthquake and in the second stage, after adding the SMA braces, the same record is applied in second of 40 to simulate the aftershock. Results indicate that the proposed enhancement can successfully reduce the maximum displacements and permanent residual deflections of the existing shear wall structures. In the second part, as new designing technique, shear wall is reinforced with SMA reinforcement bars instead of conventional steel bars and/or with combination of SMA and steel reinforcement. ABAQUS finite element program is used to capture the seismic behavior of the concrete wall and the SMA material is implemented in the computer program by using FORTRAN as a subroutine material module. The structure is evaluated through nonlinear static as well as dynamic time history analyses. The results show that SMA reinforcement can significantly restore the residual displacement in the shear wall.
机译：本文研究形状记忆合金（SMA）在增强耦合剪力墙抗震性能方面的有效性。首先，在剪力墙开口中安装了SMA支撑或钢绞线，以进行修理和翻新。有限元程序SeismoStruct用于评估受控结构的抗震性能。为了进行翻新，将具有和不具有SMA元素的多层混凝土剪力墙建筑物暴露于El-centro地震记录15秒钟，然后进行25秒钟的阻尼自由振动。为了修复目的，结构在最初的40秒内受到El-centro地震的刺激，而在第二阶段，在添加SMA支撑后，在40秒中应用相同的记录来模拟余震。结果表明，所提出的改进可以成功地减少现有剪力墙结构的最大位移和永久残余挠度。在第二部分中，作为新的设计技术，用SMA钢筋代替传统的钢筋和/或SMA和钢筋的组合来增强剪力墙。 ABAQUS有限元程序用于捕获混凝土墙的抗震性能，而SMA材料则通过使用FORTRAN作为子例程材料模块在计算机程序中实现。通过非线性静态和动态时程分析来评估结构。结果表明，SMA增强可以显着恢复剪力墙中的残余位移。

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