- 摘 要
-
（1 貴州貴安建設投資有限公司， 貴陽 550025； 2 貴州正業(yè)工程技術(shù)投資有限公司, 貴州省巖溶地基工程技術(shù)研究中心， 貴陽 550005； 3 長安大學建筑工程學院， 西安 710064）
［摘要］阻尼器作為一種廉價高效的被動減震裝置目前已廣泛應用于我國建筑領域，而菱形阻尼器以其特殊的構(gòu)造，能夠在較小阻尼系數(shù)下提供給結(jié)構(gòu)較大阻尼比，同時可以在結(jié)構(gòu)水平位移較小時提供阻尼力。研究非線性菱形黏滯阻尼器的力學特性，推導了菱形黏滯阻尼器的等效阻尼比公式，對比阻尼器為結(jié)構(gòu)提供相同附加阻尼比的情況下，黏滯阻尼器和菱形黏滯阻尼器之間的減震效果。結(jié)果表明，由于放大系數(shù)的原因，菱形阻尼器可以以小阻尼系數(shù)來提供大阻尼比。
［關鍵詞］菱形阻尼器； 附加阻尼比； 減震效果
中圖分類號：TQ336-4+文獻標識碼：A文章編號：1002-848X(2017)13-0073-05
Damping effect of structure with dampers in diagonal scissor-jack braces
Liu Xiaoxing1, Fu Junyi2, Li Yuyang3
(1 Guizhou Gui′An Construction and Investment Co., Ltd., Guiyang 550025, China; 2 Guizhou Zhengye Engineering and Investment Incorporation Limited, Guizhou Karst Foundation Engineering Technology Research Center, Guiyang 550005, China; 3 School of Architecture Engineering, Chang′an University, Xi′an 710064, China)
Abstract:Dampers have been widely used in the field of architecture in China as a kind of cheap and efficient passive absorber. Due to its special structure, dampers in diagonal scissor-jack braces can provide larger damping ratio to structure with small damping coefficient, and it also can provide damping force when the horizontal displacement of the structure is small. The mechanical properties of nonlinear viscous dampers in diagonal scissor-jack braces were studied, and formula of equivalent damping ratio of nonlinear viscous dampers in diagonal scissor-jack braces was derived. The damping effects of viscous dampers and dampers in diagonal scissor-jack braces were compared under the same additional damping ratio provided by dampers. The results show that, due to the amplification factor, the diamond damper can provide a large damping ratio with small damping coefficients.
Keywords:dampers in diagonal scissor jack braces; additional damping ratio; damping effect
*國家自然科學基金項目（51208042），陜西省自然科學基礎研究計劃項目（2012JQ7017）。
作者簡介：劉曉星，碩士，高級工程師，Email：415981578@qq.com。
