（1 昆明理工大学建筑工程学院， 昆明 650500；2 昆明理工大学公共安全与应急管理学院， 昆明 650093）

［摘要］基于滑动摩擦耗能理论，提出了一种新型钢管橡胶摩擦耗能器。为了研究耗能器滞回性能，设计了试验试件进行了不同螺栓扭矩、加载制度、加载速率和加载幅值工况下的低周反复试验。试验结果表明，在低周反复加载下，耗能器在所有工况中摩擦力均较为稳定，连续疲劳加载工况下依然能够稳定耗散能量，表现出了良好的耗能能力，且试验后摩擦橡胶块磨损较少，有利于长期使用。耗能器在加载过程中造成的摩擦橡胶块的磨损及外摩擦管内温度的上升，将导致摩擦橡胶块与外摩擦管内壁之间的法向接触应力和摩擦系数的减小，从而降低耗能器的摩擦力。其中，摩擦橡胶块的磨损对耗能器的摩擦力影响较大。

［关键词］摩擦耗能器； 低周反复加载； 滞回性能； 试验研究； 摩擦力

中图分类号：TU352-1文献标识码：A文章编号：1002-848X(2020)01-0118-04

Experimental study on a new type of steel tube rubber friction energy dissipater

Zuo Heng1, Zhang Longfei1, Tao Zhong2, Ye Yang1

(1 Faculty of Civil Engineering and Mechanics, Kunming University of Science and Technology, Kunming 650500, China；2 Department of Public Safety and Emergency Management, Kunming University of Science and Technology, Kunming 650093, China)

Abstract:Based on the theory of sliding friction energy dissipation, a new type of steel tube rubber friction energy dissipater was proposed. In order to study the hysteretic performance of the energy dissipater, the experimental pieces were designed and low-cycle reversed loading tests were conducted under different working conditions of bolt torques, loading systems, loading rates and loading amplitudes. The experimental results show that the friction force of the energy dissipater is relatively stable in all working conditions under low-cycle reversed loading, and it can still dissipate energy stably under continuous fatigue loading, showing good energy consumption capacity, and the friction rubber block is little worn after the test, which is conducive to long-term use. The wear of the friction rubber block and the rise of the temperature in the outer friction tube caused by the energy dissipater during the loading process will reduce the normal contact stress and friction coefficient between the friction rubber block and the inner wall of the outer friction tube, so as to reduce the friction of the energy dissipater. Among them, the wear of friction rubber block has a great influence on the friction force of energy dissipater.

Keywords:friction energy dissipater; low-cycle reversed loading; hysteretic performance; experimental study; friction force

*国家科技支撑计划（2013BAK13B01）。

作者简介：左恒，硕士,Email：2640121465@qq.com。