摘要
为改善高强混凝土剪力墙的抗震性能,将高强矩形螺旋钢筋(HRSRs)应用于高强混凝土剪力墙的约束边缘构件及墙身。通过对10个HRSR高强混凝土剪力墙抗震性能的研究,并基于对HRSR强约束作用的考虑,提出与HRSR高强混凝土剪力墙开裂状态、屈服状态、峰值状态和极限状态对应的弯矩-曲率计算方法。研究表明,该文建议的压弯构件弯矩-曲率计算公式能较为准确地描述剪力墙各阶段的荷载-变形关系,计算值与试验值吻合较好。与普通箍筋形式的高强混凝土剪力墙相比,采用连续封闭的HRSR,能够显著提高高强混凝土剪力墙截面的承载能力和变形能力。
In order to improve the seismic performance of high-strength concrete shear walls,the high-strength rectangular spiral reinforcements(HRSRs)are applied to the constrained edge members and wall body of highstrength concrete shear wall.Through the seismic performance investigations of 10 high-strength concrete shear walls confined with HRSR,and considering the strong constraint of HRSR,the bending moment curvature calculation method of high-strength concrete shear walls confined with HRSR is proposed corresponding to the cracking,yielding,peak and ultimate states.The study shows that the bending moment curvature formula of the bending member can describe the load-deformation relation of the shear wall more accurately,and the calculated values are in good agreement with the experimental values.Compared with the form of common stirrup,the continuous closed HRSR can significantly improve the sectional bearing capacity and deformation capacity of high-strength concrete shear walls.
作者
赵花静
李青宁
赵珺
李书锋
郑玉
ZHAO Hua-jing;LI Qing-ning;ZHAO Jun;LI Shu-feng;ZHENG Yu(School of Science,Xi’an University of Architecture and Technology,Xi′an,Shaanxi 710055,China;Department of Civil Engineering,Xi’an University of Architecture and Technology,Xi′an,Shaanxi 710055,China;School of transportation,Xuchang University,Xuchang,He'nan 461000,China)
出处
《工程力学》
EI
CSCD
北大核心
2020年第9期123-132,共10页
Engineering Mechanics
基金
陕西省自然科学基金项目(2019JQ-765,2019JM-168)
教育厅专项科研计划项目(18JK1420)
西安建筑科技大学基础研究基金项目(JC1611,RC1901)。
关键词
高强矩形螺旋钢筋
剪力墙
压弯构件
弯矩-曲率
承载力
high-strength rectangular spiral reinforcements
shear walls
eccentrically compressed members
moment-curvature
bearing capacity
作者简介
李青宁(1952−),男,陕西人,教授,硕士,博导,从事高层抗震研究及桥梁抗震研究(E-mail:lqn419@126.com);赵珺(1980−),女,陕西人,副教授,博士,从事钢筋混凝土构件研究及桥梁抗震研究(E-mail:zhaojun@xauat.edu.cn);李书锋(1990−),男,河南人,讲师,博士,从事高强混凝土梁柱节点抗震研究(E-mail:lsf1516@163.com);郑玉(1992−),男,山东人,硕士生,从事钢筋混凝土结构抗震性能研究(E-mail:553079169@qq.com);通讯作者:赵花静(1985−),女,陕西人,副教授,博士,从事钢筋混凝土剪力墙结构研究(E-mail:zhaohj@xauat.edu.cn).
