• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>PCI Journal >Minimum confinement reinforcement for prestressed concrete piles and a rational seismic design framework
【24h】

Minimum confinement reinforcement for prestressed concrete piles and a rational seismic design framework

机译：预应力混凝土桩的最小约束加固和合理的抗震设计框架

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

The design of prestressed concrete piles in seismic regions is required to include confinement reinforcement in potential plastic hinge regions. However, the existing requirements for quantifying this reinforcement vary significantly, often resulting in unconstructible details. This paper presents a rational approach for designing minimum confinement reinforcement for prestressed concrete piles in seismic regions. By varying key variables, such as the concrete strength, prestressing force, and axial load, the spiral reinforcement quantified according to the proposed approach provides a minimum curvature ductility capacity of about 18, while the resulting ultimate curvature is 28% greater than an estimated target curvature for seismic design. This paper also presents a new axial load limit for prestressed piles, an integrated framework for seismic design of piles and superstructure, the dependency of pile displacement capacity on surrounding soils, and how further reduction to confinement reinforcement could be achieved, especially in medium to soft soils and in moderate to low seismic regions.
机译：地震区域中的预应力混凝土桩的设计要求在潜在的塑料铰链区域中包括约束加固。但是，量化这种增强的现有要求差异很大，通常导致无法构造的细节。本文提出了一种合理的方法来设计地震区域中预应力混凝土桩的最小约束加固。通过改变关键变量，例如混凝土强度，预应力和轴向载荷，根据建议的方法量化的螺旋钢筋可提供约18的最小曲率延展性，而最终极限曲率比估计目标大28％地震设计的曲率。本文还提出了预应力桩的新的轴向极限，桩和上部结构的抗震设计的综合框架，桩位移能力对周围土壤的依赖性以及如何实现进一步减小约束加固的作用，特别是在中软地基中。土壤和中低地震区。

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