哈尔滨工程大学学报2025，Vol.46Issue(2)：234-242,9.DOI:10.11990/jheu.202211045
Q460高强钢焊接波形钢腹板梁的剪切性能研究
Shear performance of welded corrugated steel web girder using Q460 high-strength steel
摘要
Abstract
The calculation of the shear strength for Q460 high-strength steel welded corrugated steel webs is a key issue in the design of composite beam bridges with corrugated steel webs.In this study,welding residual stress,in-itial geometric defects,and geometric parameters were comprehensively considered.Moreover,the nonlinear shear buckling of Q460 high-strength steel corrugated steel web girders with three common wave patterns was studied u-sing numerical simulations.The calculated value of the finite element model was compared with the value measured during the experiment to verify the accuracy of the finite element model.Subsequently,the effects of welding resid-ual stress and initial geometric defects on the shear strength of the welded corrugated steel web girder of high-strength steel were analyzed.Finally,the finite element results were compared with the existing calculation formula for the shear strength of corrugated steel web girders.The calculation formula to determine the lower limit of the shear strength was proposed.Research results show that the developed finite element model can be used to calculate the initial stiffness,ultimate shear strength,load-displacement curve,and residual shear strength of corrugated steel web girder.The welding residual stress slightly affects the shear strength,whereas the initial geometric defects exhibit a significant effect,which becomes more evident when the shear slenderness ratio λs is greater than 0.6.As the thickness of the corrugated steel web increases,the initial stiffness and shear strength of the corrugated steel web increase significantly.A smaller height of the corrugated steel web indicates a higher utilization rate of steel and residual shear strength.The residual shear strength is not solely dependent on the corrugation depth but rather on the failure mode.The research results offer a valuable reference for the calculation and analysis of the shear strength of high-strength steel welded corrugated steel web girder.关键词
波形钢腹板/高强钢/剪切强度/非线性/焊接残余应力/初始几何缺陷/参数分析/数值模拟Key words
corrugated steel web/high strength steel/shear strength/nonlinear/welding residual stress/initial ge-ometric imperfection/parameter analysis/numerical simulation分类
土木建筑引用本文复制引用
刘勇,冀伟,赵彦华,杨文娟..Q460高强钢焊接波形钢腹板梁的剪切性能研究[J].哈尔滨工程大学学报,2025,46(2):234-242,9.基金项目
国家自然科学基金项目(52168019) （52168019）
湖南省自然科学基金面上项目(2024JJ5084) （2024JJ5084）
中央高校基本科研业务费(541109030099) （541109030099）
甘肃省重点研发计划-工业类项目(23YFGA0043). （23YFGA0043）
