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（1 昆明理工大學(xué)建筑工程學(xué)院， 昆明 650500；2 昆明理工大學(xué)公共安全與應(yīng)急管理學(xué)院， 昆明 650093）

［摘要］基于滑動(dòng)摩擦耗能理論，提出了一種新型鋼管橡膠摩擦耗能器。為了研究耗能器滯回性能，設(shè)計(jì)了試驗(yàn)試件進(jìn)行了不同螺栓扭矩、加載制度、加載速率和加載幅值工況下的低周反復(fù)試驗(yàn)。試驗(yàn)結(jié)果表明，在低周反復(fù)加載下，耗能器在所有工況中摩擦力均較為穩(wěn)定，連續(xù)疲勞加載工況下依然能夠穩(wěn)定耗散能量，表現(xiàn)出了良好的耗能能力，且試驗(yàn)后摩擦橡膠塊磨損較少，有利于長(zhǎng)期使用。耗能器在加載過(guò)程中造成的摩擦橡膠塊的磨損及外摩擦管內(nèi)溫度的上升，將導(dǎo)致摩擦橡膠塊與外摩擦管內(nèi)壁之間的法向接觸應(yīng)力和摩擦系數(shù)的減小，從而降低耗能器的摩擦力。其中，摩擦橡膠塊的磨損對(duì)耗能器的摩擦力影響較大。

［關(guān)鍵詞］摩擦耗能器； 低周反復(fù)加載； 滯回性能； 試驗(yàn)研究； 摩擦力

中圖分類號(hào)：TU352-1文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：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

*國(guó)家科技支撐計(jì)劃（2013BAK13B01）。

作者簡(jiǎn)介：左恒，碩士,Email：2640121465@qq.com。