- 摘 要
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（蘭州理工大學土木工程學院， 蘭州 730050）
［摘要］當摩擦材料為超高分子聚乙烯時，為探究摩擦擺支座的滯回耗能性能，在MTS試驗機上對其進行了擬靜力試驗，并分析對比了潤滑摩擦和干摩擦時支座的耗能能力。試驗表明，以超高分子聚乙烯為摩擦材料的摩擦擺支座具有良好的耗能性能，且豎向壓力一定的情況下，潤滑摩擦試驗時，隨著加載速率的增加，支座的耗能能力基本不變；干摩擦試驗時，隨著加載速率的增加，支座的滯回曲線更加飽滿。水平加載速率一定的情況下，隨著豎向壓力的增大，潤滑摩擦和干摩擦時支座的滯回曲線均趨于飽滿，支座的耗能能力提高。以宕昌縣某幼兒園工程為算例，詳細介紹了以摩擦擺支座為隔震裝置的設計流程，包括隔震模型的建立、支座的布置、地震波的選取、設防烈度下地震響應分析以及罕遇地震下地震響應分析。
［關鍵詞］超高分子聚乙烯； 摩擦擺支座； 滯回曲線； 隔震設計
中圖分類號：TU352-1+2文獻標識碼：A文章編號：1002-848X(2018)19-0086-05
Research on mechanical properties and application analysis of friction pendulum bearing
Li Xiaodong, Huo Juan, Zhao Jian
(School of Civil Engineering, Lanzhou University of Technology, Lanzhou 730050, China)
Abstract:In order to explore the hysteretic energy dissipation performance of the friction pendulum bearing when the friction material is ultra-high molecular polyethylene, the quasi-static test was carried out on the MTS test machine, and the energy dissipation capacity of the bearing during lubrication friction and dry friction was analyzed and compared. The test results show that the friction pendulum bearing with ultra-high molecular polyethylene as friction material has good energy dissipation performance, and when the vertical pressure is certain, the energy dissipation capacity of the bearing is basically unchanged with the increase of the loading rate. In the dry friction test, the hysteretic curve of the bearing becomes fuller with the increase of loading speed. When the horizontal loading rate is constant, as the vertical pressure increases, the hysteresis curve of the bearing tends to be full during lubrication friction and dry friction, and the energy consumption of the bearing increases. Taking a kindergarten project in Tangchang County as an example, the design flow of the friction pendulum bearing as the isolation device was introduced in detail, including the establishment of the isolation model, the arrangement of the bearing, the selection of the seismic wave, the seismic response analysis under the fortification intensity and seismic response analysis under rare earthquakes.
Keywords:UHMWP; friction pendulum bearing; hysteresis curve; seismic isolation design
*國家創(chuàng)新基金項目（11C26216206242），甘肅省自然科學項目（1104ZSB083）。
作者簡介：李曉東，博士，副教授，碩士生導師，Email:236756265@qq.com。
