高層建筑隔震設(shè)計若干問題探討
卜龍瑰, 苗啟松
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(北京市建筑設(shè)計研究院有限公司， 北京 100045)
［摘要］結(jié)合工程實(shí)例對隔震結(jié)構(gòu)設(shè)計中的嵌固剛度比問題進(jìn)行分析，認(rèn)為嵌固驗(yàn)算位置選取不合理將使嵌固剛度比要求失去實(shí)際意義；對隔震支座位移計算的地震輸入及位移控制方法進(jìn)行探討，認(rèn)為采用單向位移的控制方法偏不安全；對隔震支座拉應(yīng)力計算相關(guān)問題進(jìn)行分析和探討的結(jié)果表明，在支座出現(xiàn)拉應(yīng)力后，對隔震層的內(nèi)力的計算將進(jìn)入復(fù)雜的非線性階段，如果計算模擬不得當(dāng)將使支座拉應(yīng)力計算結(jié)果出現(xiàn)嚴(yán)重偏差，影響隔震方案。［關(guān)鍵詞］高層建筑; 隔震設(shè)計; 地震動輸入; 嵌固剛度比; 最小剪重比中圖分類號：TU352.12 文獻(xiàn)標(biāo)識碼：A 文章編號：1002-848X(2015)18-0068-03
Discussion on several issues of isolation design for high-rise buildingsBu Longgui, Miao Qisong(Beijing Institute of Architectural Design, Beijing 100045, China)Abstract: Combined with an engineering example, build-in stiffness ratio for vibration isolation structure in the design was analyzed. It is considered that the selection of build-in check location should be reasonable or the build-in stiffness will lose practical significance. Isolation of displacement calculation of ground motion input and displacement control method were discussed, and it is considered that the one-way displacement control method of partial is unsafe. Analysis and discussion on relevant issues for tensile stress calculation of the isolation were done. The result shows that after tensile stress occurs in the bearing, internal force calculation of isolation layer will enter the stage of complex nonlinear, if computing simulation is not proper, the tensile stress of the bearing will appear serious deviation, so that impacts isolation scheme.Keywords: high-rise building; isolation design; ground motion input; build-in stiffness ratio; minimum shear-weight ratio
作者簡介：卜龍瑰，碩士，高級工程師，Email：99790522@qq.com。
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