（1 贵州贵安建设投资有限公司， 贵阳 550025； 2 贵州正业工程技术投资有限公司, 贵州省岩溶地基工程技术研究中心， 贵阳 550005； 3 长安大学建筑工程学院， 西安 710064）

［摘要］阻尼器作为一种廉价高效的被动减震装置目前已广泛应用于我国建筑领域，而菱形阻尼器以其特殊的构造，能够在较小阻尼系数下提供给结构较大阻尼比，同时可以在结构水平位移较小时提供阻尼力。研究非线性菱形黏滞阻尼器的力学特性，推导了菱形黏滞阻尼器的等效阻尼比公式，对比阻尼器为结构提供相同附加阻尼比的情况下，黏滞阻尼器和菱形黏滞阻尼器之间的减震效果。结果表明，由于放大系数的原因，菱形阻尼器可以以小阻尼系数来提供大阻尼比。

［关键词］菱形阻尼器； 附加阻尼比； 减震效果

中图分类号：TQ336-4+文献标识码：A文章编号：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

*国家自然科学基金项目（51208042），陕西省自然科学基础研究计划项目（2012JQ7017）。

作者简介：刘晓星，硕士，高级工程师，Email：415981578@qq.com。