本文選題：懸索橋橋塔 + 三維地震作用�。� 參考：《地震工程與工程振動(dòng)》2015年04期

【摘要】：懸索橋主塔作為核心支撐構(gòu)件,在地震作用下特別是罕遇地震作用下其結(jié)構(gòu)破壞模式就顯得尤其重要,也是保證生命線工程結(jié)構(gòu)震后安全的基礎(chǔ),而目前對大跨度懸索橋破壞模式的研究還很不完善。本文借助Open Sees有限元分析程序,以哈爾濱陽明灘大跨度懸索橋的設(shè)計(jì)方案為背景,以懸索橋的鋼筋混凝土橋塔為研究重點(diǎn),分析三維罕遇地震作用時(shí),樁-土-結(jié)構(gòu)的動(dòng)力相互作用對大跨度懸索橋橋塔順橋向破壞模式的影響。文中以在三維地震作用下塔底截面曲率達(dá)到等效屈服曲率,從而橋塔產(chǎn)生具有同時(shí)性特征的雙塑性鉸為破壞基準(zhǔn)。分析發(fā)現(xiàn)在順橋向罕遇地震作用下,懸索橋塔結(jié)構(gòu)往往在樁基產(chǎn)生塑性屈服后塔底截面再出現(xiàn)塑性;同時(shí)發(fā)現(xiàn)考慮樁-土-結(jié)構(gòu)相互作用可以延緩塔底截面進(jìn)入塑性的時(shí)間,但會(huì)加大塔底截面的地震反應(yīng)。
[Abstract]:As the core supporting member of suspension bridge, the structural failure mode of suspension bridge under earthquake, especially under rare earthquake, is especially important, and it is also the basis to ensure the safety of lifeline engineering structure after earthquake. At present, the research on the failure mode of long-span suspension bridge is not perfect. In this paper, with the help of Open Sees finite element analysis program, taking the design scheme of Yangmingtan long-span suspension bridge in Harbin as the background, and taking the reinforced concrete bridge tower of suspension bridge as the research emphasis, this paper analyzes the action of 3D rare earthquake. The influence of the dynamic interaction of pile-soil-structure on the failure mode of long span suspension bridge tower. In this paper, the equivalent yield curvature of the bottom section of the tower under the action of three dimensional earthquake is taken as the basis for the failure of the bridge tower. It is found that the tower structure of suspension bridge often reappears plasticity after plastic yield of pile foundation under the action of rare earthquake along the bridge direction, and it is found that considering pile-soil-structure interaction can delay the time when the column bottom section enters plasticity. But it will increase the seismic response of the bottom section of the tower.
【作者單位】： 哈爾濱工業(yè)大學(xué)土木工程學(xué)院;蘇州科技學(xué)院;
【基金】：國家自然科學(xué)基金項(xiàng)目(51278322) 江蘇省高�；鹬卮箜�(xiàng)目(13KJA560002)
【分類號(hào)】：U445.75

【參考文獻(xiàn)】

相關(guān)期刊論文 前4條

1 王浩;李愛群;郭彤;;超大跨懸索橋地震響應(yīng)的綜合最優(yōu)控制研究[J];湖南大學(xué)學(xué)報(bào)(自然科學(xué)版);2006年03期

2 秦權(quán),樓磊;非經(jīng)典阻尼對懸索橋地震反應(yīng)的影響[J];土木工程學(xué)報(bào);1999年03期

3 聶利英;張雷;李碩嬌;;地震作用下大跨度懸索橋縱向破壞模式研究[J];土木工程學(xué)報(bào);2011年04期

4 肖汝誠,項(xiàng)海帆;大跨徑懸索橋結(jié)構(gòu)分析理論及其專用程序系統(tǒng)的研究[J];中國公路學(xué)報(bào);1998年04期

【共引文獻(xiàn)】

相關(guān)期刊論文 前10條

1 鄔鑫;江輝;;基于多因素分析的抗震結(jié)構(gòu)阻尼耗能研究[J];北京交通大學(xué)學(xué)報(bào);2010年04期

2 杜永峰,趙國藩;隔震結(jié)構(gòu)中非經(jīng)典阻尼影響及最佳阻尼比分析[J];地震工程與工程振動(dòng);2000年03期

3 林耀雄;陳q，

本文編號(hào)：1860469