- 摘 要
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(1 中國中元國際工程有限公司， 北京 100089；2 隔而固（青島）振動控制有限公司， 青島 266108)
［摘要］提出一種基于大承載鋼彈簧支座的多線性豎向復合隔振支座，給出了多線性豎向復合隔振支座的本構關系及構造，分析了多線性豎向復合隔振支座不同變形階段的工作原理。結合實際工程案例，通過擬靜力加載試驗及有限元模擬，研究了鋼彈簧支座的力學性能，提出了較大振動（如地震）下的變形控制指標，對多線性豎向復合隔振結構，進行了軌道交通振動輸入下的結構動力響應分析。結果表明，多線性豎向復合隔振支座的豎向變形不超過35mm，耦合水平變形不超過15mm，鋼彈簧隔振支座可基本保持彈性，當采取水平變形控制措施時，豎向變形限值可適當放松；結構采用多線性豎向復合隔振，通過合理構造實現(xiàn)多階段剛度控制，滿足結構抗震設防需求的同時，可以有效降低軌道交通導致的結構振動。
［關鍵詞］多線性豎向復合隔振；試驗研究；變形指標；地鐵振動
中圖分類號：TU398-7 文獻標識碼：A文章編號：1002-848X(2021)22-0078-06
Study on performance of multi-linear vertical composite vibration isolation structure
FU Yangqiang1, ZHANG Tongyi1, QIN Jingwei1, LUO Yong2
(1 China IPPR International Engineering Co., Ltd., Beijing 100089， China；2 Gerb (Qingdao) Vibration Control Co., Ltd., Qingdao 266108， China)
Abstract: A multi-linear vertical composite vibration isolation support based on a large load-bearing steel spring support was proposed. The constitutive relationship and structure of the multi-linear vertical composite vibration isolation support were given, and the working principle of the multi-linear vertical composite vibration isolation support at different deformation stages was analyzed. Combined with actual engineering cases, through pseudo-static loading tests and finite element simulations, the mechanical properties of steel spring bearings were studied, and the deformation control index under large vibrations (such as earthquakes) was proposed. The dynamic response analysis of the structure under the vibration input of rail transit was carried out on the multi-linear vertical composite vibration isolation structure. The results show that the vertical deformation of the multi-linear vertical composite vibration isolation support does not exceed 35mm, and the coupling horizontal deformation does not exceed 15mm. The steel spring vibration isolation support can basically maintain elasticity. When the horizontal deformation control measures are adopted, the vertical deformation limit can be appropriately relaxed. The structure adopts multi-linear vertical composite vibration isolation and achieves multi-stage stiffness control through reasonable structure, which can effectively reduce the structural vibration caused by rail traffic while meeting the requirements of seismic fortification of the structure.
Keywords:multi-linear vertical composite vibration isolation； experimental study； deformation index； metro vibration
*中國機械工業(yè)集團基金項目（SINOMAST-ZDZX-2017-05），中國中元國際工程有限公司科研課題(20180097)。
作者簡介：付仰強，碩士，高級工程師，一級注冊結構工程師，Email：fuyangqiang@ippr.net。
