- 摘 要
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(河北大地建設科技有限公司,石家莊 050021)
[摘要]防屈曲支撐具有普通支撐和耗能元件的雙重特點,分析了采用防屈曲支撐加固混凝土框架的特點。同時結合實際工程,從需求分析、支撐的布置和選擇、試驗構件的性能鑒定、抗震加固前后結果對比這4個方面闡述這種抗震加固方法在工程中的應用。結果表明,通過合理選擇防屈曲支撐的布置方案和性能參數(shù),能夠實現(xiàn)防屈曲支撐不同階段的工作狀態(tài),確保了防屈曲支撐耗能,從而達到保護主體構件的加固目標。
[關鍵詞]防屈曲支撐;抗震加固;耗能元件;混凝土框架
中圖分類號:TU375-4,TU391-3文獻標識碼:A文章編號:1002-848X(2012)03-0112-04
Study on design of concrete frame strengthened with buckling-restrained braces
Qi Jianwei, Hao Guiqiang, Du Yongshan, Gao Juying(Hebei Dadi Construction Technology Co., Ltd., Shijiazhuang 050021, China)
Abstract:Buckling-restrained braces(BRB) have characteristics of convention braces and energy dissipated members. The characteristics of concrete frame strengthened with BRB were analyzed. Based on actual engineering, the application of the seismic strengthening method was explained from requirement study, the layout and choice of the BRB, the test appraisal of BRB and the result comparison before and after the application of BRB. The results showed that, by choosing the rational layout and parameters of BRB, the energy dissipated function of BRB was brought out, the main structure members were protected, and the reinforced objective was realized.
Keywords:buckling-restrained brace; seismic strengthening; energy dissipated member; concrete frame
作者簡介:齊建偉,博士,教授級高級工程師,Email:qjw@vip.sina.com。
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