隔震建筑用疊層橡膠支座大變形模型及豎向壓應力取值
趙斌 梅占馨 姚謙峰 上田 茂
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趙斌 梅占馨 姚謙峰 （西安建筑科技大學建工系 710055）上田 茂 （島取大學工學部 日本島取 68000）
[提要] 提出了一種隔震建筑用疊層橡膠支座的大變形模型。該模型同時考慮了疊層橡膠支座的大變形特性、變形過程中的P-8效應和支座端面轉(zhuǎn)動約束對變形的影響，具有較好的計算精度和效率。還進一步探討了疊層橡膠支座的合理豎向壓應力取值問題。結(jié)果表明，在現(xiàn)有基礎(chǔ)上適當提高取值是完全可行的。
[關(guān)鍵詞] 隔震建筑 疊層橡膠支座 大變形模型 豎向壓應力A mechanical model accounting for the large-deformational property, the P-8 effect and the revolute restraint at the top of the rubber bearings is presented which is used for base-isolated buildings with good accuracy and high efficiency. Also, the rational compressed stress of laminated rubber bearings used in base-isolated buildings is studied. The results show that it is reasonable to raise the compressed stress which is adopted now.
Keywords: base-isolated building; laminated rubber bearings;mechanical model; compressed stress
