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增大截面法加固震损预制装配式剪力墙的抗震性能试验 预览

Research on Seismic Behavior of Earthquake-damaged Pre-cast Shear Wall Strengthened by Enlarging Cross-section
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摘要 目的采用增大截面法加固已震损预制装配式剪力墙,并对其进行抗震性能研究,为现有工程中类似构件加固提供设计依据.方法采用力与位移混合加载制度对震损预制装配式剪力墙进行低周反复荷载试验.结果经过合理和可靠的加固,试件的破坏形态为压弯破坏;加固后的预制剪力墙承载力有所提高,并且具有良好的延性变形和耗能性能.研究表明,加固后的装配式剪力墙抗震性能与受损前基本一致.结论对于预制装配式剪力墙来说,采用增大截面法是有效的抗震加固方法. Seismic behavior of earthquake-damaged pre-cast shear wall specimen with full scale strengthened by enlarging cross-section method was studied in this paper,so as to provide references for the engineering field. Earthquake-damaged pre-cast shear wall were tested under cyclic loading. In this loading system,force and displacement control were used. The experimental results showthat after reasonable and reliable reinforcement,the failure modes of the wall was compression and bending failure;the pre-cast shear wall had a improvement effect on increasing the ultimate bearing capacity after strengthened,while maintaining good ductile deformation and energy dissipation ability. The study indicated that the seismic performance of rehabilitated pre-cast shear wall before seismic damage under a certain damage level. Enlarging cross-section is very effective seismic strengthening method for pre-cast shear wall.
作者 刘香 张国丰 宋浩 李娟 LIU Xiang;ZHANG Guofeng;SONG Hao;LI Juan(School of Civil Engineering,Inner Mongolia University of Science and Technology,Baotou,China,014010)
出处 《沈阳建筑大学学报:自然科学版》 CAS CSCD 北大核心 2019年第1期58-66,共9页 JOURNAL OF SHENYANG JIANZHU UNIVERSITY NATURAL SCIENCE
基金 国家自然科学基金项目(51768056) 内蒙古自治区自然科学基金项目(2013MS730) 包头市科技局计划项目(2014X1003-1).
关键词 预制装配式剪力墙 震损 增大截面法 抗震性能 加固 pre-cast shear wall seismic damage enlarge cross-section seismic behavior strengthen
作者简介 刘香(1964—),女,教授,主要从事结构动力分析、混凝土结构抗震等方面研究.
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