發(fā)布時(shí)間：2018-02-04 12:20

  本文關(guān)鍵詞： 簡支梁橋 緩沖裝置 有限元分析 地震烈度 抗震性能　出處：《江蘇大學(xué)學(xué)報(bào)(自然科學(xué)版)》2017年01期 　論文類型：期刊論文

【摘要】：針對JTG/T B02-01—2008《公路橋梁抗震設(shè)計(jì)細(xì)則》中對橋梁設(shè)置彈性墊塊以達(dá)到地震時(shí)緩和沖擊和限制梁位移的建議,對30 m簡支梁橋中的緩沖裝置進(jìn)行了定性定量的研究.首先,通過模型計(jì)算,確定了在不同場地類型和不同地震烈度區(qū)的條件下,30 m簡支梁橋中彈性墊塊的合理剛度取值范圍.計(jì)算結(jié)果表明:墊塊剛度為主梁剛度的γ倍(0.01≤γ≤0.50)時(shí),對各區(qū)橋梁均能達(dá)到理想的抗震保護(hù)效果;以計(jì)算結(jié)果為基礎(chǔ),采用常用工業(yè)橡膠材料,設(shè)計(jì)了一款蜂窩形緩沖裝置,并通過往復(fù)壓縮試驗(yàn)得到其力學(xué)性能;對不同場地類型和不同地震烈度區(qū)的30 m簡支梁橋設(shè)置蜂窩形緩沖裝置的合理個(gè)數(shù)提出了建議;通過計(jì)算,驗(yàn)證了蜂窩形緩沖裝置抗震效果的有效性.
[Abstract]:In view of JTG/T B02-01-2008 detailed rules for Seismic Design of Highway Bridges, it is suggested that elastic cushions should be set up for bridges in order to mitigate the impact and limit the displacement of beams during earthquakes. The buffer device in 30 m simply supported beam bridge is studied qualitatively and quantitatively. Firstly, through the model calculation, the conditions of different site types and different seismic intensity areas are determined. The reasonable stiffness range of elastic cushion in 30 m simply supported beam bridge is calculated. The results show that when the stiffness of the main beam is 0.01 鈮，

本文編號：1490195