- 摘 要
-
李 影， 范利輝， 邱永崗
（隔而固（青島）振動控制有限公司，青島 266108）[摘要] 介紹房屋與廠房建筑抗環(huán)境振動、風(fēng)振與地震的三個措施：在房屋建筑的底部，布置彈簧隔振器隔離地震中的高頻激振力，布置粘滯阻尼器消耗、吸收掉地震中的低頻能量；在房屋建筑的高層，布置調(diào)諧質(zhì)量減振器TMD抑制地震激發(fā)的振幅。這些措施都已在抗震、抗環(huán)境振動與抗風(fēng)振的實踐中取得了很好的效果。火電廠汽機島廠房A列柱，由于汽輪發(fā)電機組的分隔，橫向沒有梁連接，剛度很小，不能抗地震。汽輪發(fā)電機組頂臺板彈性支承后，頂臺板下的立柱不再屬于機器動力基礎(chǔ)，而屬于廠房靜力基礎(chǔ)，便可以與A列柱組成統(tǒng)一的廠房結(jié)構(gòu)，大大增強了A列柱的剛度，采用這種結(jié)構(gòu)為歐洲某強地震區(qū)設(shè)計抗9.5度地震的機器系統(tǒng)與廠房結(jié)構(gòu)。
[關(guān)鍵詞] 房屋建筑；廠房建筑；彈簧隔振器；粘滯阻尼器；調(diào)諧質(zhì)量減振器TMD；地震響應(yīng)
中圖分類號：TU352.1 文獻標(biāo)識碼：A 文章編號：1002-848X(2012) Sl-0551-03Basic measures to protect bruldings and structures from environment vibration, wind-induced vibration and earthquake
Li Ying, Fan Lihui, Qiu Yonggang
( GERB( Qingdao) Vibration Control Co., Ltd., Qingda0 266108, China)Abstract: Three basic measures to protect buildings and structures from environment vibration, wind induced vibration and earthquake were introduced: at the base of the structure, helical spring elements are used to isolate high frequency vibration and viscous damping elements are used to absorb and dissipate low frequency energy; at the top of the structure, tuned mass dampers are used to restrain vibration amplitude. Columns of row A at turbine building are poor of seismic protecting due to insufficient stiffness. If spring foundation is used for a turbine generator set, the columns under the turbine generator foundation deck will be transferred from a dynanuc sub-structure into a static one, which can be coupled with the turbine building columns of both row A and row B to forma steel structure with sufficient stiffness.A turbine building protected from 9.5 degree earthquake at strong earthquake area in Europe with above mentioned measure is introduced.
Keywords: building structure; plant structure; spring element; viscous damper; tuned mass damper; earthquake corresponding
