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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:

35卷

期数:

2018年05期

页码:

225-232

栏目:

出版日期:

2018-09-03

文章信息/Info

Title:

Steel Rod Energy Dissipating Element Design and Performance Research of Array Type Metal Damper

作者:

孙 威，付腾燕，居理宏，孙 丽，马井月

沈阳建筑大学土木工程学院

Author(s):

SUN Wei, FU Teng-yan, JU Li-hong, SUN Li, MA Jing-yue

School of Civil Engineering, Shenyang Jianzhu University

关键词:

阵列型金属阻尼器; 钢棒耗能元件; 数值模拟; 正交试验; 耗能系数

Keywords:

array type metal damper;  steel rod energy dissipation element;  numerical simulation;  orthogonal test;  energy dissipation coefficient

分类号:

-

DOI:

-

文献标志码:

A

摘要:

设计了5种形式的Q235材质钢棒耗能元件，包括1种等截面钢棒耗能元件RED A和4种变截面钢棒耗能元件RED B，RED C，RED D和RED E。首先，以数值模拟结合正交试验的方法分析各耗能元件的直径d、长细比δ、端板锚固长度l_m、内缩直径d₁、锚固端延伸长度l₁以及中部等截面长度l₂等几何参数对其耗能性能的影响；其次，研究钢材力学性能参数对钢棒耗能元件耗能性能的影响，将材质为低屈服点钢LYP100，LYP160和LYP225的耗能元件耗能性能与Q235材质的耗能元件进行对比。结果表明：在5种耗能元件中，RED D的耗能能力最强，且当其几何参数组合为直径d₀=40 mm、长细比δ=4、内缩直径d₁=20 mm、中部等截面长度l₂=20 mm时，耗能性能最优，耗能系数达到2.71；当耗能元件材质为低屈服点钢时，耗能性能进一步提升；耗能元件RED D在最优几何参数条件下，采用低屈服点钢LYP160制作时，耗能系数高达3.12。

Abstract:

5 kinds of steel rod energy dissipating elements with Q235 steel were designed, which included 1 kind of equal cross-section element RED A and 4 kinds of variable cross-section elements RED B, RED C, RED D and RED E. Firstly, the methods of numerical simulation and orthogonal test were used to analyze the influence of elements’ geometric parameters such as diameter d₀, slenderness ratio δ, anchorage length in the plate l_m, internal shrinkage diameter d₁, extension length of anchorage section l₁ and middle equal cross-section length l₂ on their energy dissipation performances. Secondly, the influence of steel mechanics property parameters on energy dissipation performances of elements was also researched. The energy dissipation performances of elements with low yield point steel LYP100, LYP160 and LYP225 materials were compared with those of Q235 steel element. The results show that the energy dissipation performance of RED D is the best among all kinds of elements. When its geometric parameters are diameter d₀=40 mm, slenderness ratio δ=4, internal shrinkage diameter d₁=20 mm, and middle equal cross-section length l₂=20 mm, its energy dissipation performance is optimal, the energy dissipation coefficient is 2.71. When the material of energy dissipation elements is low yield point steel, the energy dissipation performance is increased further. When RED D is made with LYP160 steel and optimal geometrical parameters, the energy dissipation coefficient is as high as 3.12.

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更新日期/Last Update: 2018-09-03