湖南大学学报（自然科学版）2025，Vol.52Issue(11)：52-64,13.DOI:10.16339/j.cnki.hdxbzkb.2025105
"软钢+橡胶"耗能角支架力学性能试验研究和参数分析
Experimental Study and Parameter Analysis on Mechanical Properties of"Soft-steel+Rubber"Dissipative Angle Bracket
摘要
Abstract
This paper introduces an innovative dissipative angle bracket for cross-laminated timber(CLT)structures,which takes advantage of the soft-steel bracket and high-damping rubber to provide superior ductility and energy-dissipating capacity.To investigate the mechanical performance of the innovative dissipative angle bracket,monotonic loading and low-cycle reciprocating loading tests were carried out on twelve specimens.The typical failure modes were summarized,and mechanical properties such as initial stiffness,ductility coefficient,and equivalent viscous damping ratio were obtained.An elastoplastic finite element model of the innovative dissipative angle bracket was established using Abaqus software,and a parametric analysis was conducted based on the validated numerical model.The results indicate that the main failure modes of the innovative dissipative angle bracket include steel bridge yielding fracture,local compressive failure of the base,and rubber deboning,with steel bridge yielding fracture being the primary failure modes.All specimens exhibit ductility coefficients greater than 9.6,and the equivalent viscous damping ratio ranges from 9%to 26%,demonstrating high ductility and good energy dissipation capacity.Furthermore,the parametric analysis results show that the load-bearing capacity of the innovative dissipative angle bracket is positively correlated with the thickness of the steel skeleton,the yield strength of the soft-steel,the shear modulus of the rubber and the adoption of the washer,while the height of the rubber has a negligible effect on the load-bearing capacity of the innovative dissipative angle bracket.关键词
木材/连接件(结构)/破坏模式/力学性能/有限元分析Key words
timber/connectors(structural)/failure modes/mechanical properties/finite element analysis分类
建筑与水利引用本文复制引用
熊海贝,尹昊然,孙瑾煜,陈佳炜,王毳.."软钢+橡胶"耗能角支架力学性能试验研究和参数分析[J].湖南大学学报（自然科学版）,2025,52(11):52-64,13.基金项目
国家自然科学基金资助项目(52308259,51978502),National Natural Science Foundation of China(52308259,51978502) （52308259,51978502）
