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（新疆大學(xué)建筑工程學(xué)院， 烏魯木齊 830047）

［摘要］為了研究疊層輪胎隔震墊用于墻下隔震技術(shù)時(shí)的隔震性能，將疊層輪胎隔震墊置于模擬墻下隔震技術(shù)的槽形圈梁加載裝置中，并對(duì)其進(jìn)行壓剪試驗(yàn)，得出滯回曲線、骨架曲線、水平等效剛度、等效阻尼比及耗能能力各項(xiàng)隔震指標(biāo)，并進(jìn)行數(shù)值擬合，得出各指標(biāo)隨水平位移的變化規(guī)律。結(jié)果表明，隔震墊滯回曲線飽滿，具有良好的隔震性能，水平加載位移為±45mm時(shí)，骨架曲線、水平位移-水平等效剛度關(guān)系曲線、水平位移-等效阻尼比關(guān)系曲線、水平位移-耗能能力關(guān)系曲線的趨勢(shì)都發(fā)生了變化。

［關(guān)鍵詞］疊層輪胎隔震墊；  墻下隔震技術(shù)； 水平剛度； 等效阻尼比； 骨架曲線

中圖分類號(hào)：TU352-12文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2020)23-0104-04

Study on seismic isolation performance of scrap tire pad for under-wall seismic isolation technology

CAI Zengxia, ZHANG Guangtai, LI Baoyuan, LU Dongliang

(School of Architecture and Engineering, Xinjiang University， Urumqi 830047， China)

Abstract:In order to study the seismic isolation performance of scrap tire pads used in under-wall seismic isolation technology, the scrap tire pads were placed in a trough-shaped ring beam loading device that simulated the under-wall seismic isolation technology and compression and shear tests were performed on it, various seismic isolation indexes of hysteresis curve, skeleton curve, horizontal equivalent stiffness, equivalent damping ratio and energy dissipation capacity were obtained, and the numerical fitting was performed to obtain the change rule of each index with horizontal displacement. The results show that the hysteresis curve of the seismic isolation pad is full and has good seismic isolation performance. When the horizontal loading displacement is ±45mm, the trend of the skeleton curve, the horizontal displacement-horizontal equivalent stiffness relationship curve, the horizontal displacement-equivalent damping ratio relationship curve, and the horizontal displacement-energy dissipation capacity relationship curve have all changed.

Keywords:scrap tire pad; under-wall seismic isolation technology; horizontal stiffness; equivalent damping ratio; skeleton curve

*國(guó)家自然科學(xué)基金項(xiàng)目（201504101182）。

作者簡(jiǎn)介：才增霞，碩士，Email：1749592973@qq.com； 通信作者：張廣泰，學(xué)士，教授，Email：czx920926@sina.com。