發(fā)布時(shí)間：2019-03-01 09:33

【摘要】：針對(duì)相鄰兩聯(lián)連續(xù)梁橋伸縮縫處的碰撞現(xiàn)象,基于其周期不一致而表現(xiàn)出的動(dòng)力差異性,進(jìn)行動(dòng)力時(shí)程分析,采用直接積分法研究了地震作用下相鄰聯(lián)的非同向振動(dòng)和伸縮縫處的碰撞響應(yīng)。分析結(jié)果表明:不同周期比的相鄰梁體,在地震動(dòng)作用下產(chǎn)生的碰撞響應(yīng)不同,加速度峰值小持續(xù)時(shí)間長(zhǎng)的地震波對(duì)伸縮縫處的碰撞響應(yīng)較小;碰撞對(duì)嚴(yán)重不同向振動(dòng)的相鄰兩聯(lián)(T2/T10.5)的地震響應(yīng)影響很大,隨著相鄰兩聯(lián)周期比的增大,碰撞對(duì)結(jié)構(gòu)地震反應(yīng)影響逐漸減小。
[Abstract]:Aiming at the collision phenomenon at the expansion joint of two adjacent continuous beam bridges, the dynamic time history analysis is carried out on the basis of the dynamic difference of the two adjacent continuous beam bridges due to the inconsistency of their periods. The direct integral method is used to study the impact response of adjacent non-isotropic vibration and expansion joints under earthquake. The results show that the impact response of adjacent beams with different period ratios is different under earthquake action, and the impact response of seismic waves with small acceleration peak value and long duration is smaller than that of adjacent beams with different period ratios. The impact of the collision on the seismic response of the adjacent two pairs (T2/T10.5) with severe different vibration is significant. With the increase of the period ratio of the adjacent two pairs, the impact of the collision on the seismic response of the structure decreases gradually.
【作者單位】： 長(zhǎng)安大學(xué)公路學(xué)院;中國(guó)地震局工程力學(xué)研究所;
【基金】：國(guó)家自然科學(xué)基金(51408040,51408042) 中央高�；究蒲袠I(yè)務(wù)費(fèi)專項(xiàng)資金(2013G1211012)聯(lián)合資助
【分類號(hào)】：U441;U443.31

【共引文獻(xiàn)】

相關(guān)期刊論文 前10條

1 黎明發(fā),顧伯達(dá);水力測(cè)功器轉(zhuǎn)子的模態(tài)分析[J];湖北工學(xué)院學(xué)報(bào);2002年02期

2 劉喜平;;帶加強(qiáng)層的高層框筒結(jié)構(gòu)的動(dòng)力特性分析[J];華北科技學(xué)院學(xué)報(bào);2010年01期

3 陳樹(shù)勛;;彈性動(dòng)力學(xué)中哈密爾頓原理和拉格朗日方程的推導(dǎo)[J];唐山工程技術(shù)學(xué)院學(xué)報(bào);1988年03期

4 黃永強(qiáng)，趙曉云，陳樹(shù)勛;彈性動(dòng)力學(xué)中的瑞利－里茲法[J];河北理工學(xué)院學(xué)報(bào);1996年02期

5 彭如海,劉杰,彭R，

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