發(fā)布時(shí)間：2018-02-23 07:47

  本文關(guān)鍵詞： 曲線橋梁 FPS 精細(xì)化模擬 建模適用范圍 地震響應(yīng)　出處：《工程抗震與加固改造》2016年02期 　論文類(lèi)型：期刊論文

【摘要】：本文結(jié)合某曲線橋工程,研究相鄰聯(lián)縱向碰撞對(duì)FPS隔震曲線橋地震響應(yīng)的影響。文中選擇橋梁設(shè)計(jì)半徑和主梁跨度為參數(shù),利用反應(yīng)譜進(jìn)行單段直梁法、梁格法和多段直梁法建模適用范圍的探究。并根據(jù)上述結(jié)論建立考慮、不考慮碰撞的FPS曲線橋以及考慮碰撞的板式橡膠曲線橋模型,進(jìn)行對(duì)比分析。結(jié)果表明,多維地震作用輸入下,在跨長(zhǎng)不變而曲率半徑增大時(shí),三種模擬方法差值逐漸減小,梁格法最優(yōu),多段直梁法誤差率均在10%之內(nèi),單段直梁法存在滿(mǎn)足精度要求的臨界跨曲比。此外,碰撞可增大裝有FPS支座的曲線橋中跨橋墩地震響應(yīng),而對(duì)邊跨橋墩地震響應(yīng)幾乎無(wú)影響。建議在實(shí)際工程中,將FPS支座用于曲線橋邊跨橋墩。
[Abstract]:In this paper, the influence of adjacent longitudinal collision on the seismic response of a curved bridge with FPS isolation is studied. The design radius of the bridge and the span of the main beam are selected as parameters, and the response spectrum is used to carry out the single section straight beam method. Based on the above conclusions, the model of FPS curved bridge without collision and the model of plate rubber curved bridge without collision are established and analyzed. The results show that, When the span length is invariant and the curvature radius increases, the difference between the three simulation methods decreases gradually, the beam method is optimal, and the error rate of the multi-section straight beam method is within 10%. In addition, the impact can increase the seismic response of mid-span pier of curved bridge with FPS support, but has little effect on the seismic response of side span pier. It is suggested that in practical engineering, the seismic response of side span pier is almost unaffected. The FPS support is used for curved bridge side span pier.
【作者單位】： 北京建筑大學(xué)北京市城市交通基礎(chǔ)設(shè)施建設(shè)工程技術(shù)研究中心;北京建筑大學(xué)首都世界城市順暢交通協(xié)同創(chuàng)新中心;
【基金】：國(guó)家自然科學(xué)基金項(xiàng)目(51308027;51178042)
【分類(lèi)號(hào)】：U442.55

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