登录
注册
E-alert
登录
注册
E-alert
Effects of Different Design Parameters on the Seismic Performance of Aluminium Foam-Filled Steel Tubular Braced Light-Gauge Steel Frames
-
摘要: 为提升框架支撑体系的侧向刚度、整体承载能力及改善支撑构件屈服后的屈曲变形特性，有效延缓屈曲破坏进程，提出了一种以泡沫铝填充圆钢管作为支撑的新型轻钢框架结构体系，并深入探究其抗震性能。在严格验证有限元模型可靠性的基础上，以支撑长细比（λ）、径厚比（D/t）及泡沫铝孔隙率（K）为参数变量，建立了80个单层单跨内填泡沫铝中心支撑轻钢框架的数值计算模型。在低周反复荷载作用下，系统评估了上述参数对结构抗震性能（涵盖骨架曲线、刚度演化及延性系数等核心指标）的作用规律，进而确定了性能最优的参数配置区间。结果表明：支撑圆钢管推荐采用长细比55~80、径厚比50~70的组合，泡沫铝孔隙率以60%为佳；当具体设计条件允许时，针对长细比为55、80以及100~120的工况，应分别将径厚比限制在70、50及30以内，以确保结构具备优秀的极限承载力、变形能力、刚度稳定性、延性及能量耗散性能。Abstract: In order to enhance the lateral stiffness， overall bearing capacity， and post-yield buckling deformation resistance of frame-braced structures， and to delay the buckling failure of braces， this study proposed a light-gauge steel frame structure with aluminum foam-filled circular steel tubes as bracing members and investigated its seismic performance. Following rigorous validation of the finite element model’s reliability， eighty numerical models of single-story， single-span concentrically braced light-gauge steel frames infilled with aluminum foam were developed. Key variables investigated were brace slenderness ratio （λ）， diameter-to-thickness ratio （D/t）， and aluminum foam porosity （K）. The models underwent quasi-static loading to comprehensively examine the influence of these parameters on seismic performance， focusing on aspects such as skeleton curves， stiffness degradation， and ductility coefficients. The study identified optimal design ranges： braces should have a slenderness ratio between 55 and 80 and a diameter-to-thickness ratio within 50-70， coupled with an aluminum foam porosity of 60%. Furthermore， when feasible， diameter-to-thickness ratios should be capped at 70， 50， and 30 for slenderness ratios of 55， 80， and 100~120， respectively. These constraints ensure the structure achieves superior ultimate strength， deformation capacity， stiffness retention， ductility， and energy dissipation capabilities.
-
Key words:
- aluminum foam /
- concentrically braced /
- seismic design /
- seismic performance
-
[1] 高宛成,肖岩. 冷弯薄壁型钢组合墙体受剪性能研究综述[J]. 建筑结构学报,2014,35（4）:30-40. [2] COUTINHO L L,ABADA M,IBRAHIM A,et al. Energy absorption of CFRP composite thin-walled tubes with PVC foam-filled cores[J]. Innovative Infrastructure Solutions,2022,7（2）:1-12. [3] 李冬梅,邵建华,张继业,等. 泡沫铝填充钢管构件静态压缩性能试验与数值模拟研究[J]. 结构工程师,2024,40（6）:152-161. [4] LI D M,SHAO J H,WANG N,et al. Experimental and numerical study on seismic performance of aluminum foam infilled steel frame-braced structural system[J]. Iranian Journal of Science and Technology,Transactions of Civil Engineering,2025,49（2）:1591-1610. [5] WANG Z G,SHAO J H. Study on quasi-static axial compression performance and energy absorption of aluminum foam-filled steel tubes[J]. Materials,2023,16（12）:4485. [6] 王展光,汪洋. 高温后泡沫铝填充镀锌钢管扭转性能研究[J]. 建筑结构学报,2018,39（增刊2）:155-161. [7] 汪洋,蔡萍,邵建华,等. 泡沫铝填充钢管轴向压缩性能和吸能能力研究[J]. 轻金属,2023（4）:47-54. [8] 张光成,郭超群,闫治坤,等. 泡沫钢填充管的准静态压缩变形模式、力学性能及吸能特性[J]. 材料导报,2021,35（24）:158-163. [9] 王巍,安子军,彭春彦,等. 泡沫铝填充钢/ 铝复合管轴向抗冲击吸能特性[J]. 哈尔滨工程大学学报,2017,38（7）:1093-1099. [10] 钱佳怡,赵宝成. 支撑与基础刚接的摇摆钢支撑框架结构抗震性能研究[J]. 苏州科技大学学报（工程技术版）,2024,37（4）:17-24. [11] 董志骞,李钢,刘一赫,等. 低延性中心支撑钢框架结构振动台试验[J]. 建筑结构学报,2020,41（6）:21-29. [12] 董志骞. 基于能力储备的中心支撑钢框架结构抗震性能研究[D]. 大连:大连理工大学,2018. [13] 叶馨. 地震作用下中心支撑钢框架结构非耗能构件承载力需求研究[D]. 哈尔滨:哈尔滨工业大学,2020. [14] 崔瑶,张薇,丁宸汀,等. 支撑长细比及节点板对中心支撑钢框架抗震性能的影响[J]. 建筑钢结构进展,2019,21（6）:9-15. [15] YANG R Q,ZHOU X J. Experimental study on the seismic behavior of concentrically braced steel frames with extended end-plate bolted connections[J]. Science Progress,2020,103（3）:39844740. [16] 张贵林,屠永清. 泡沫铝填充钢管支撑滞回性能的试验研究[J]. 工程抗震与加固改造,2008（2）:77-81. -
点击查看大图
计量
- 文章访问数: 13
- HTML全文浏览量: 6
- PDF下载量: 0
- 被引次数: 0
下载:
