大跨鋼結(jié)構(gòu)樞紐站房連續(xù)性倒塌數(shù)值仿真分析
[Abstract]:At present, the research on the design methods of continuous collapse prevention is mainly based on the rule framework, and there is a lack of sufficient research foundation for the calculation method and influencing factors of the anti-continuous collapse of the passenger station of the large span hub. In the past, most scholars used static analysis method, which is not realistic for the results of continuous collapse analysis. In this paper, ANSYS/LS-DYNA finite element program is used to simulate the continuous collapse dynamic response of a large span steel station building, in order to understand the continuous collapse mechanism of large railway passenger station structure. Firstly, the key columns of the project are selected by using the average stress ratio method and the energy method. Then the dynamic simulation analysis of the defective structure under different key columns and root number failure conditions is carried out by using the equivalent load instantaneous unloading method to judge the collapse of the structure under each condition. The responses of the upper latticed shell layer and the lower elevated layer of the structure under different working conditions are compared respectively. Finally, the effects of material failure strain, equivalent load failure time and damping ratio on the continuous collapse of the structure are analyzed by parameterization. There is no continuous collapse of the structure under various working conditions, which indicates that the project has good redundancy and the ability to prevent continuous collapse. The failure of the double mid-column has the most adverse effect on the lower layer of elevated structure, and the failure of the double-root side column has the most adverse effect on the upper layer of the reticulated shell. The parameterized study shows that the variation of material failure strain between elastic limit and plastic limit has little effect on the collapse simulation results of single edge column. The failure time of equivalent load is taken as 1 / 10 of the first vertical natural vibration period of the defective structure, and the change of damping ratio between the damping ratios of general steel structures has little effect on the collapse performance of the structure.
【學(xué)位授予單位】:天津大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2014
【分類號(hào)】:TU391;TU312.3
【參考文獻(xiàn)】
相關(guān)期刊論文 前10條
1 李營(yíng);吳衛(wèi)國(guó);汪玉;杜志鵬;李曉彬;張瑋;;基于修正CS模型的船用945鋼沖擊性能研究[J];中國(guó)造船;2014年03期
2 張?jiān)聫?qiáng);丁潔民;張崢;;大跨度鋼結(jié)構(gòu)抗連續(xù)倒塌動(dòng)力分析關(guān)鍵問題研究[J];建筑結(jié)構(gòu)學(xué)報(bào);2014年04期
3 王學(xué)雙;張義和;莊華曄;曹廣祥;韓云濤;;先進(jìn)高強(qiáng)鋼Cowper-Symonds本構(gòu)方程的建立及模擬[J];汽車工藝與材料;2013年12期
4 張會(huì);喻云龍;常銀生;;大跨空間網(wǎng)格結(jié)構(gòu)連續(xù)性倒塌研究及實(shí)例分析[J];施工技術(shù);2013年08期
5 朱奕鋒;馮健;蔡建國(guó);莊麗萍;;梅江會(huì)展中心張弦桁架抗連續(xù)倒塌分析[J];建筑結(jié)構(gòu)學(xué)報(bào);2013年03期
6 黃冀卓;王湛;;鋼框架結(jié)構(gòu)魯棒性評(píng)估方法[J];土木工程學(xué)報(bào);2012年09期
7 朱奕鋒;馮健;尚仁杰;;平面張弦結(jié)構(gòu)抗連續(xù)倒塌的動(dòng)力分析[J];應(yīng)用力學(xué)學(xué)報(bào);2011年06期
8 李時(shí);汪大綏;;大跨度鋼結(jié)構(gòu)的抗連續(xù)性倒塌設(shè)計(jì)[J];四川大學(xué)學(xué)報(bào)(工程科學(xué)版);2011年06期
9 蔡建國(guó);王蜂嵐;韓運(yùn)龍;馮健;張晉;;大跨空間結(jié)構(gòu)重要構(gòu)件評(píng)估實(shí)用方法[J];湖南大學(xué)學(xué)報(bào)(自然科學(xué)版);2011年03期
10 于文靜;史健勇;趙金城;;Q345鋼材動(dòng)態(tài)力學(xué)性能研究[J];建筑結(jié)構(gòu);2011年03期
相關(guān)博士學(xué)位論文 前2條
1 萬福磊;建筑結(jié)構(gòu)連續(xù)性倒塌數(shù)值模擬方法研究[D];中國(guó)建筑科學(xué)研究院;2011年
2 喻瑩;基于有限質(zhì)點(diǎn)法的空間鋼結(jié)構(gòu)連續(xù)倒塌破壞研究[D];浙江大學(xué);2010年
相關(guān)碩士學(xué)位論文 前8條
1 鄭陽;結(jié)構(gòu)抗連續(xù)倒塌關(guān)鍵構(gòu)件的評(píng)價(jià)方法及敏感性分析[D];浙江大學(xué);2013年
2 盧婧;江西地區(qū)鋼網(wǎng)架結(jié)構(gòu)抗連續(xù)倒塌性能分析及評(píng)價(jià)[D];南昌大學(xué);2012年
3 高亮;雙層柱面網(wǎng)殼結(jié)構(gòu)抗倒塌能力的分析[D];太原理工大學(xué);2012年
4 鐘麗媛;網(wǎng)架結(jié)構(gòu)抗連續(xù)倒塌性能的試驗(yàn)研究與理論分析[D];南昌大學(xué);2011年
5 徐公勇;單層球面網(wǎng)殼抗連續(xù)倒塌分析[D];西南交通大學(xué);2011年
6 李艷;空間鋼框架連續(xù)倒塌動(dòng)力響應(yīng)仿真分析[D];廣西大學(xué);2008年
7 黃俊海;結(jié)構(gòu)抗連續(xù)倒塌設(shè)計(jì)理論與方法研究[D];哈爾濱工業(yè)大學(xué);2008年
8 李航;鋼結(jié)構(gòu)高塔的連續(xù)性倒塌分析[D];同濟(jì)大學(xué);2008年
,本文編號(hào):2338941
本文鏈接:http://sikaile.net/guanlilunwen/chengjian/2338941.html