本文選題：斜拉索　切入點(diǎn)：有限元　出處：《公路工程》2017年02期 　論文類型：期刊論文

【摘要】：斜拉索由于其輕、柔的特點(diǎn),經(jīng)常在外部環(huán)境的影響下產(chǎn)生較大的振動(dòng),從而對橋梁的力學(xué)性能產(chǎn)生影響。以赤石大橋?yàn)楣こ瘫尘?采用不同的斜拉索單元建立了不同的四塔斜拉橋整橋有限元模型,對橋梁的變形、頻率、模態(tài)等力學(xué)性能進(jìn)行了系統(tǒng)地研究。采用弦振動(dòng)理論計(jì)算出了斜拉索的自振頻率與ANSYS算出的索單獨(dú)振動(dòng)的頻率進(jìn)行了對比。結(jié)果表明,斜拉索采用BEAM3或者LINK1單元時(shí)計(jì)算出的索單獨(dú)振動(dòng)的頻率與弦振動(dòng)理論算出的頻率吻合得非常好,短索所得計(jì)算結(jié)果相對于長索誤差稍大。
[Abstract]:The cable due to its lightweight, soft features, often cause large vibration under the influence of external environment, so as to influence the mechanical properties of the bridge. To chishi bridge as the engineering background, the establishment of the four tower cable-stayed bridge of the whole bridge finite element model of the cable element was different, deformation of bridge the frequency, modal and other mechanical properties were systematically studied. The theory of string vibration is calculated comparing frequency cable vibration alone cable vibration frequency and ANSYS are calculated. The results show that the cable using BEAM3 or LINK1 unit meter calculated cable vibration frequency and single string vibration theory calculate frequency a good agreement is obtained, the calculated results are compared to the short cable cable length error is slightly larger.

【作者單位】： 湖南大學(xué)土木工程學(xué)院;
【基金】：國家自然科學(xué)基金項(xiàng)目(11572117,11502076) 湖南省交通廳項(xiàng)目(201428)
【分類號(hào)】：U448.27

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相關(guān)期刊論文 前10條

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本文編號(hào)：1630595