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(1 廣西大學(xué)，南寧 530004； 2 廣西華藍(lán)設(shè)計(jì)(集團(tuán))有限公司，南寧 530011)

［摘要］某工業(yè)廠(chǎng)房結(jié)構(gòu)自振頻率與某階設(shè)備激振模態(tài)頻率較接近，導(dǎo)致結(jié)構(gòu)產(chǎn)生共振現(xiàn)象，影響廠(chǎng)房正常運(yùn)行，危害結(jié)構(gòu)安全。通過(guò)現(xiàn)場(chǎng)動(dòng)態(tài)檢測(cè)和計(jì)算機(jī)仿真分析，掌握結(jié)構(gòu)的振動(dòng)特性。對(duì)模態(tài)頻率的振動(dòng)耦合現(xiàn)象進(jìn)行分析并提出優(yōu)化加固方法，取得明顯效果。

［關(guān)鍵詞］振動(dòng)耦合；動(dòng)態(tài)測(cè)試；仿真分析；結(jié)構(gòu)加固

Analysis on vibration coupling effect and structural strengthening of a mill building

Li Pining^1,2, Peng Wenli¹(1 Guangxi University, Nanning 530004, China; 2 Guangxi Hualan Architectural Design & Consulting Group, Nanning 530011, China)

Abstract:Resonance is caused in a mill building because the mode frequency of the structure is similar to the excitation frequency, which  has influence on normal operation of facilities and will cause the building in danger. The dynamical testing for the building and computational simulation analysis are carried out, and the structural vibration characteristics are obtained. Based on displacement control, vibration coupling effect of model frequency is analyzed. The strengthening methods are given for achieving more feasibility, economy and efficiency, which can be reference in similar projects.

Keywords:vibration coupling effect; dynamical testing; simulation analysis; structural strengthening

作者簡(jiǎn)介：李丕寧,博士,教授級(jí)高級(jí)工程師，Email：Lipining@vip.sina.com。

參考文獻(xiàn)

［1］鄭華山. 防微振設(shè)備基礎(chǔ)的設(shè)計(jì)研究［J］. 建筑結(jié)構(gòu),2007,37(6).

［2］DOEBLING S W, FARRAR C R, PRIME M B. A summary review of vibration based damage identification methods［J］. The Shock and Vibration Diget, 1998，30(2).

［3］杜思義,殷學(xué)綱，陳淮.基于頻率變化識(shí)別結(jié)構(gòu)損傷的攝動(dòng)有限元方法［J］. 工程力學(xué),2007,24(4).

［4］謝肖禮,等.扶南東亞糖業(yè)有限公司新煮糖樓檢測(cè)報(bào)告［R］.2007.