- 摘 要
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(1 昆明理工大學(xué)建筑工程學(xué)院， 昆明650500；
2 云南睿德道路橋梁工程設(shè)計(jì)有限公司， 昆明 650500）
［摘要］為研究LNR水平力分散型橡膠支座的抗震性能，以云南某橋?yàn)閷?shí)際工程背景，運(yùn)用有限元分析軟件建立有限元模型，對水平力分散型橡膠支座、鉛芯橡膠支座和抗震盆式橡膠支座進(jìn)行了非線性動(dòng)力時(shí)程分析比較。分析表明：使用水平分散型橡膠支座可延長結(jié)構(gòu)的周期，減小結(jié)構(gòu)地震動(dòng)響應(yīng)；水平分散型橡膠支座可以使橋梁下部結(jié)構(gòu)水平力分散，各墩協(xié)同抵抗地震水平力作用，使內(nèi)力分配更加合理；研究結(jié)果對非規(guī)則橋梁在E2地震作用下支座的設(shè)計(jì)，具有一定的指導(dǎo)意義。
［關(guān)鍵詞］橋梁； 抗震性能； 水平力分散型橡膠支座； 減隔震； 動(dòng)力時(shí)程分析
中圖分類號(hào)： U442.5+5，TU352 文獻(xiàn)標(biāo)識(shí)碼： A文章編號(hào)： 1002-848X(2016)S2-0300-05
Study on seismic performance of bridge bearings based on nonlinear time-history analysis
Deng Junlei1, Li Rui1, Yang Jingjing2
(1 Faculty of Civil and Engineering, Kunming University of Science and Technology, Kunming 650500, China；
2 Yunnan Rui De Road and Bridge Engineering Design Limited Company， Kunming 650500, China)
Abstract: In order to research the seismic performance of LNR horizontal force distributed ubber bearings, taking a bridge in Yunnan as the practical engineering background, using the finite element analysis software to build finite element, horizontal force dispersible rubber bearings, lead rubber bearings and seismic pot rubber bearing were compared with the nonlinear dynamic time history analysis. Analysis shows that the usage of horizontal force dispersible rubber bearings can prolong the cycle, reduce seismic response of the structure. Horizontal force dispersible rubber bearings can scatter the horizontal force of bridge foundation, the pier synergy to resist seismic horizontal force, which make the internal force distribution more reasonable. The results have certain guilding significance for the design of the bearings of the irregular brdge under E2 earthquake action.
Keywords: bridge; seismic performance; horizontal force dispersible rubber bearing; seismic isolation; dynamic time history analysis
作者簡介： 鄧俊雷，碩士研究生，工程師，Email:401322258@qq.com。
*國家自然科學(xué)基金項(xiàng)目（KKGD201506103）。
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