Steel Jacket Retrofitting of Reinforced Concrete BridgeColumns for Enhanced Shear Strength-Part 1: TheoreticalConsiderations and Test Design
Steel Jacket Retrofitting of Reinforced Concrete BridgeColumns for Enhanced Shear Strength-Part 1: TheoreticalConsiderations and Test Design
复制标题
DOI：
10.14359/9885
复制
发表时间：
1994-07
影响因子：
1.8
通讯作者：
M. Priestley;F. Seible;Yan Xiao;R. Verma
中科院分区：
文献类型：
--
作者：
M. Priestley;F. Seible;Yan Xiao;R. Verma
介绍了为研究1971年以前设计的钢筋混凝土桥梁柱的剪切破坏模式以及确定全高钢套提高地震剪切强度的有效性而进行的理论和试验研究。在这两部分的论文的第一部分中，提出了与评估现有圆形或矩形截面柱的抗剪强度有关的理论考虑。目前的设计方法相比，最近开发的，不太保守，预测方法。提出了用于预测圆形或椭圆形（对于矩形截面）导管架提供的剪切强度增强的模型。设计细节的实验测试程序，以确定“建成”和改造柱剪切强度。
A theoretical and experimental investigation conducted to study the shear failure mode of reinforced concrete bridge columns designed before 1971, and to establish the effectiveness of full-height steel jackets for enhancing the seismic shear strength is described. In this first part of a two-part paper, theoretical considerations relating to assessing the shear strength of existing columns of circular or rectangular sections are presented. Current design approaches are compared with more recently developed, and less conservative, predictive methods. Models are presented for predicting the enhancement to shear strength provided by circular or elliptical (for rectangular section) jackets. Design details of an experimental test program to determine "as-built" and retrofitted column shear strength are presented.