建筑钢结构进展2024，Vol.26Issue(1)：1-9,9.DOI:10.13969/j.cnki.cn31-1893.2024.01.001
内嵌加劲耗能钢板的箱形钢墩柱拟静力试验及数值分析
Pseudo-Static Test and Numerical Study on the Box Steel Pier with Built-in Stiffened Energy-Dissipating Steel Plates
摘要
Abstract
The steel piers are prone to buckling destruction at the root and difficult to repair after the earthquake.Based on the recoverable function and mechanical characteristics of steel piers,a novel box steel piers with easy recoverable function after earthquake is proposed.The new piers can enhance the energy dissipation and deformation capacity of the structure by setting replaceable energy-dissipating plates.The damaged energy-dissipating plates can be quickly replaced after the earthquake to restore the mechanical properties of the piers.To clarify the seismic performance of box steel piers with built-in stiffened energy-dissipating steel plates,the layout of stiffeners,the axial compression ratio and the strength of energy-dissipating plate are selected as parameters to carry out pseudo-static tests.A finite element numerical model is generated to analyze the mechanical properties of the specimens under seismic action.The mechanical characteristics and failure mechanisms of the new piers are compared and analyzed as a theoretical basis of the numerical simulation.The results indicate that the seismic performance of the specimens is improved significantly by embedding the energy-dissipating steel plate.The energy-dissipating plate greatly enhanced the horizontal bearing capacity of the specimens,but it reduced the ductility and deformation capacity.Finite element simulation results are verified on the seismic performance of the new steel piers.Based on the experimental research,theoretical analysis and numerical simulation,a formula is proposed on the bearing capacity of the new steel piers,and the accuracy of the formula is verified by comparing to the test results.关键词
钢墩柱/加劲耗能钢板/有限元模拟/拟静力试验/抗震性能Key words
steel pier/energy-dissipating steel plates with stiffeners/finite element simulation/pseudo-static test/seismic performance分类
建筑与水利引用本文复制引用
孙德畅,张海龙,严丰佐,饶武斌,韩雪,李海锋..内嵌加劲耗能钢板的箱形钢墩柱拟静力试验及数值分析[J].建筑钢结构进展,2024,26(1):1-9,9.基金项目
国家自然科学基金(51778248),福建省自然科学基金(2018J01075),福建省中青年教师教育科研项目(JAT200825),厦门工学院科研项目(KYT2020001,KYZX2021010) （51778248）
