建筑钢结构进展2025，Vol.27Issue(3)：55-65,11.DOI:10.13969/j.jzgjgjz.20230927001
腹板开六边形与圆形孔的钢梁冲击动力响应对比研究
Comparative Study on Impact Dynamic Response of Steel Beams with Hexagonal and Circular Web Openings
摘要
Abstract
In order to compare the influences of different opening forms on the impact resistance of steel beams with web openings(SBWO),the equivalent flexural stiffnesses of steel beams with hexagonal and circular openings in the web at different opening spacings and opening heights were compared,and drop weight impact tests and finite element analysis were carried out.The main parameters analyzed are the opening form,impact energy,spacing between openings,opening height,and impact position.The drop weight impact force,displacement,and strain around web opening were collected during the test.The results show that the buckling deformation of the steel beam with hexagonal web opening(SBHWO)is larger than that of the steel beam with circular web opening(SBCWO)under the impact of the drop weight.The SBCWO exhibits a larger impact plateau value,stronger ability to resist the impact,and better energy dissipation capacity.The maximum displacement produced by the SBCWO is 86.49%of that of the SBHWO.The finite element numerical model can more accurately simulate the dynamic response of SBWO under impact.The most unfavorable impact position of both SBWO is about 1/4 of the calculated length from the beam end.The impact position near the beam end is more favorable,and the displacement generated here is the smallest.It is less affected by the opening form.关键词
腹板开孔钢梁/动力响应/开孔形式/有限元数值模拟/抗冲击性能Key words
steel beam with web opening/dynamic response/opening form/finite element numerical simulation/impact resistance分类
建筑与水利引用本文复制引用
陈华艳,刘用滨,罗才松,傅佳铭,王枫轩,付朝江,祁皑,王碧珍..腹板开六边形与圆形孔的钢梁冲击动力响应对比研究[J].建筑钢结构进展,2025,27(3):55-65,11.基金项目
国家自然科学基金(5227080392),福建省自然科学基金(2022J01928),福建省住建厅科技项目(2022-K-305、2022-K-71) （5227080392）
