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首页> 外文会议>Structural Stability Research Council 2005 Annual Stability Conference; 20050406-09; Montreal(CA) >SEISMIC PERFORMANCE EVALUATION OF THIN-WALLED STEEL TUBULAR COLUMNS
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SEISMIC PERFORMANCE EVALUATION OF THIN-WALLED STEEL TUBULAR COLUMNS

机译：薄壁钢管柱的抗震性能评估

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摘要

This paper deals with the seismic performance evaluation of thin-walled steel tubular columns. The basic characteristics of the steel tubular columns are noted. A seismic design methodology for ultimate strength and ductility evaluation of thin-walled steel tubular columns is presented. The method is based on the empirical ductility equations for column's plate sub-elements and involves an elastoplastic pushover analysis and failure criterion accounting for local buckling. The modified two-surface plasticity model is used to account for nonlinear material behavior. Based on the ultimate strength and ductility capacity, a seismic design verification method for thin-walled tubular columns is presented and discussed. The application of the method is demonstrated by comparing the computed strength and ductility of some cantilever columns with the test results. A good correlation between the computed and test results is achieved. The effects of some important material characteristics and structural parameters, such as, residual stress, width-to-thickness ratio, and column slenderness ratio, on the ultimate strength and ductility of thin-walled steel tubular columns, are investigated. The method is applicable for both the design of new and retrofitting of existing thin-walled steel tubular columns.
机译：本文对薄壁钢管柱的抗震性能进行了评估。指出了钢管柱的基本特性。提出了一种抗震设计方法，用于评估薄壁钢管柱的极限强度和延性。该方法基于柱板子元素的经验延性方程，并涉及弹塑性推覆分析和考虑局部屈曲的破坏准则。修改后的两面可塑性模型用于说明材料的非线性行为。基于极限强度和延性，提出并讨论了薄壁管柱的抗震设计验证方法。通过将一些悬臂柱的计算强度和延性与测试结果进行比较，证明了该方法的应用。计算结果与测试结果之间具有良好的相关性。研究了一些重要的材料特性和结构参数，例如残余应力，宽度与厚度之比和柱长比，对薄壁钢管柱的极限强度和延性的影响。该方法适用于新设计和现有薄壁钢管柱的改造。

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