局部削弱剪切钢板阻尼器力学性能试验研究
Experimental study on mechanical properties of locally weakened shear panel damper
皮凤梅 1任文杰 2王胜勇 3马天恩4
作者信息
- 1. 河北工业大学,天津 300401;廊坊师范学院,河北廊坊 065000
- 2. 河北工业大学,天津 300401
- 3. 衡水震泰隔震器材有限公司,河北衡水 053000
- 4. 衡水市住建局,河北衡水 053000
- 折叠
摘要
在耗能钢板两侧沿厚度方向以长条形、上下两端圆弧过渡进行局部削弱,削弱条带沿钢板宽度方向均匀分布,形成局部削弱剪切钢板阻尼器.设计3种不同规格试件进行拟静力试验,分析了阻尼器的滞回曲线、骨架曲线、等效黏滞阻尼系数、总累计耗能量、强度退化和刚度退化性能指标,并采用ABAQUS有限元软件进行数值模拟分析及参数化分析.结果表明,局部削弱剪切钢板阻尼器滞回曲线饱满,耗能性能稳定,具有较好的后续承载能力;削弱条带处厚度比削弱条带高度对阻尼器耗能性能的影响大,耗能钢板厚度与削弱条带厚度的比值适当增大可以提高阻尼器耗能能力;数值模拟结果与试验结果吻合较好.
Abstract
On both sides of the energy dissipation steel plate,the long strip and the arc transition between the upper and lower ends are locally weakened along the thickness direction,and the weakening bands are uniformly distributed along the width direction of the steel plate.It forms a locally weakened shear panel damper(LWSPD).Three different specimens are designed for quasi-static test.The hysteretic curve,skeleton curve,equivalent viscous damping coefficient,total accumulated energy consumption,strength degradation and stiffness degradation performance indexes of the damper are analyzed in detail.The numerical simulation analysis and parametric analysis are carried out with ABAQUS finite element software.The results show that the locally weakened shear panel damper has full hysteretic curve,stable energy dissipation performance and good follow-up bearing capacity.The thickness of the weakening strip has a greater influence on the energy dissipation performance of the damper than the weakening strip height.The energy dissipation capacity of the damper can be improved by appropriately increasing the ratio of the thickness of the energy dissipation steel plate to the thickness of the weakening strip.The numerical simulation results are in good agreement with the experimental results.
关键词
局部削弱/剪切钢板阻尼器/拟静力试验/数值模拟Key words
locally weakened/shear panel damper/quasi-static test/numerical simulation引用本文复制引用
基金项目
国家自然科学基金面上项目(51878240)
河北省住建厅指导性项目(2023-2132)()
出版年
2024
NETL
NSTL
万方数据