發(fā)布時(shí)間：2018-02-28 23:09

  本文關(guān)鍵詞： 橋梁工程 大跨度連續(xù)剛構(gòu)橋 地震反應(yīng)分析 行波效應(yīng)　出處：《中外公路》2014年06期 　論文類型：期刊論文

【摘要】：基于行波效應(yīng)的基本原理,采用強(qiáng)迫位移法分析了大跨度連續(xù)剛構(gòu)橋在地震動(dòng)縱橋向的地震反應(yīng)。結(jié)果表明:與一致激勵(lì)相比,行波效應(yīng)在某些波速下會(huì)減小連續(xù)剛構(gòu)橋的地震反應(yīng),而在另一些波速下會(huì)增大連續(xù)剛構(gòu)橋的地震反應(yīng);當(dāng)視波速較小時(shí)變化幅度顯著,當(dāng)視波速較大時(shí)變化幅度較小,而且隨著視波速的增加,行波作用下的地震反應(yīng)逐漸趨向于一致激勵(lì)下的地震反應(yīng),但即使視波速足夠大仍會(huì)出現(xiàn)不吻合現(xiàn)象。
[Abstract]:The basic principle based on traveling wave effect, the forced displacement method to analyze the seismic response of Long Span Continuous Rigid Frame Bridge in the longitudinal direction of the bridge vibration. The results showed that compared with the uniform excitation, traveling wave effect can reduce the seismic response of continuous rigid frame bridge in some wave velocities, seismic response and in some wave velocities will increase the continuous rigid frame bridge; when the apparent velocity is small changes, when the smaller amplitude of apparent wave velocity is larger, and with the increase of the apparent velocity of seismic response seismic response of traveling wave gradually tend to under uniform excitation, but even if the velocity is large enough there will still be no consistent phenomenon.

【作者單位】： 河南城建學(xué)院交通工程系;
【基金】：國(guó)家自然科學(xué)基金資助項(xiàng)目(編號(hào):59979001)
【分類號(hào)】：U442.55;U448.23

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