摘要
主要研究了梁中施加无粘结预应力的型钢混凝土(UPSRC)框架在竖向反复荷载下的抗震性能。先通过已有试验对本文ABAQUS有限元建模手段进行校准,然后利用该方法模拟得到了11榀UPSRC框架在竖向反复荷载下的荷载-挠度滞回曲线,并从强度、耗能、延性以及刚度退化等方面分析了UPSRC结构竖向抗震性能的特点以及梁中纵筋配筋率、力筋配筋率以及型钢含钢率对各抗震性能指标的影响。
The seismic behavior of unbonded prestressed steel reinforced concrete（ UPSRC） frames with unbonded tendons in beams was studied under vertical loading in this article. Load-deflection hysteretic curves of 11 UPSRC frames were obtained using ABAQUS that had been calibrated by experimental results in literature. The vertical seismic behavior of the frames was than analyzed in terms of strength,energy dissipation,ductility,and stiffness degradation. Also the influence of the longitudinal reinforcement ratio,tendon ratio,and steel ratio on the seismic performance was studied.
出处
《江西科学》
2016年第3期364-369,383,共7页
Jiangxi Science
基金
国家级自然科学基金项目"全面考虑次内力的预应力型钢混凝土结构设计理论研究"(51178328)
国家级自然科学基金项目"无粘结预应力型钢混凝土框架受力性能试验及理论研究"(51578400)
关键词
无粘结预应力
型钢混凝土
竖向抗震性能
有限元分析
unbonded prestress
steel reinforced concrete
vertical seismic performance
finite element analysis
