A numerical study of prestressed high strength steel tubular members
作者机构：Department of Civil EngineeringLiverpool John Moores UniversityLiverpool L33AFUK Department of Civil EngineeringUniversity of BirminghamBirmingham B152TTUK
出 版 物：《Frontiers of Structural and Civil Engineering》 (结构与土木工程前沿（英文版）)
年 卷 期：2020年第14卷第1期
页 面：10-22页
核心收录：
学科分类：1305[艺术学-设计学（可授艺术学、工学学位）] 08[工学] 081304[工学-建筑技术科学] 0813[工学-建筑学] 0814[工学-土木工程]
主 题：finite element prestressing tubular members grout high strength steel
摘 要：The structural behavior of prestressed high strength steel(HSS)tubular members is investigated through the execution of advanced finite element modeling.Numerical models are developed and validated against published experimental data on HSS tubular members subjected to different levels of initial prestress and loaded either in tension or compression.The effect of the presence or absence of grouting on the strength and ductility of the members is also considered.To numerically replicate the structural response recorded in the tests,some key modeling features including the employed numerical solver,the adopted material models and the element types warrant careful consideration.Upon developing of the finite element models,the numerically generated ultimate loads,the corresponding failure modes and the full load-deformation curves are compared to the experimental ones,indicating a successful validation.As anticipated,prestressing enhances the load-bearing capacity for the tensile members,whereas it is detrimental for the compressive ones.A series of parametric studies is performed to assess the influence of key factors on the structural response of prestressed HSS members and the obtained results are discussed.Design guidance for tensile and compressive prestressed tubular members is also provided.
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