Rapid Repair of Earthquake Damaged RC Interior Beam-wide Column Joints and Beam-wall Joints Using FRP Composites

查看全文 作　　者：LI Bing LIM Chee [1]Leong

机构地区：[1]Inst. for the Environment, Nanyang Technological Univ. , Singapore

出　　处：《四川大学学报(工程科学版)》索引2009年第41卷第3期,共8页

摘　　要：This paper studies the seismic performance of FRP-strengthened RC interior non-seismically detailed beam-wide columns and beam-wall joints after limited seismic damage.Four eccentric and concentric beam-wide column joints and two beam-wall joints,initially damaged in a previous study,were repaired and tested under constant axial loads(0.1fc′Ag and 0.35fc′Ag) and lateral cyclic loading.The rapid repair technique developed,aimed to restore the original strength and to provide minimum drift capacity.The repair schemes were characterized by the use of:(a) epoxy injections and polymer modified cementitious mortar to seal the cracks and replace spalled concrete;and(b) glass(GFRP) and carbon(CFRP) sheets to enhance the joint performance.The FRP sheets were effectively prevented against possible debonding through the use of fiber anchors.Comparison between responses of specimens before and after repair clearly indicated reasonable restoration in strength,drift capacity,stiffness and cumulative energy dissipation capacity.All specimens failed with delamination of FRP sheets at beam-column joint interfaces.The rapid repair technique developed in this study is recommended for mass upgrading or repair of earthquake damaged beam-column joints. 关键词：FRP 建筑物抗震设计抗震结构

相关文献

参考文献（9）
引证文献（1）
耦合文献（0）

参考文献(9)

引证文献(1)

互联网出版许可证新出网证(渝)字10号全国400电话 - 免长途话费

Rapid Repair of Earthquake Damaged RC Interior Beam-wide Column Joints and Beam-wall Joints Using FRP Composites

参考文献(9)

引证文献(1)

用户提示