防灾减灾工程学报2017，Vol.37Issue(2)：222-229,8.DOI:10.13409/j.cnki.jdpme.2017.02.007
不对称单侧加固柱抗震性能试验研究及有限元分析
Research on Seismic Performance of Concrete Columns Strengthened with Asymmetric Single Lateral Side Section
摘要
Abstract
The existing frame columns could be retrofitted by the method of adding new retrofit concrete section on one lateral column side.The seismic capacity of the structure could be increased and the influence caused by the retrofit construction process to the building interior space could also be reduced by this new retrofit method.Five reninforced concrete columns retrofitted with asymmetric single lateral side concrete section were designed and tested through the low cycle reversed loading test.The new added concrete section adopted for specimens is normal concrete and the bonded prestressed concrete,the new section was connected with the original column through the anchorage steel bars.Based on the experimental study,the hysteretic curves,skeleton curves,strength degradation,second order moment effect and the steel bars strain were analyzed,some suggestions for seismic design of the retrofit column were also proposed.The test results show that the seismic performance of the retrofitted columns has been significantly improved,the difference of the initial stress between the new added strengthening section and the existing column section could be reduced and the second order moment effects could also be decreased due to the application of the prestressing force.Moreover,the finite element analysis model of the retrofit column specimens was set up through the software of ABAQUS and the skeleton curves were calctulated.The finite element method analysis results show good agreement with the test results.关键词
不对称加固/单侧面加固/抗震性能/拟静力试验/有限元分析Key words
asymmetric retrofit/single lateral side section retrofit/seismic behavior/quasi-static test/finite element method analysis分类
建筑与水利引用本文复制引用
刘春阳,陈磊..不对称单侧加固柱抗震性能试验研究及有限元分析[J].防灾减灾工程学报,2017,37(2):222-229,8.基金项目
山东省自然科学基金项目(ZR2015EQ017)资助 （ZR2015EQ017）
