本文選題：混雜系統(tǒng) + MLD　； 參考：《北京交通大學(xué)》2014年碩士論文

【摘要】：摘要：斜拉橋?qū)偃嵝越Y(jié)構(gòu)體系,在風(fēng)或地震作用下,其動(dòng)力響應(yīng)對(duì)結(jié)構(gòu)安全的影響非常重要,通常會(huì)采取相應(yīng)的控制措施。目前,針對(duì)特大型橋梁控制問題,有很多理論研究和工程應(yīng)用,但對(duì)于多災(zāi)害的協(xié)同防御還缺乏深入的研究。本文論題來自2011年交通運(yùn)輸建設(shè)重大科技專項(xiàng)“特大型橋梁防災(zāi)減災(zāi)與安全控制技術(shù)”,其中,課題“基于混雜系統(tǒng)的特大型橋梁防災(zāi)減災(zāi)理論研究”作為一種新的理論探索,將混雜系統(tǒng)理論應(yīng)用于橋梁系統(tǒng)的控制當(dāng)中,旨在為我國(guó)已建或?qū)⒁ㄔO(shè)的橋梁提供新的災(zāi)害理論分析和控制優(yōu)化技術(shù)。本文以斜拉橋構(gòu)件—橋塔和主梁作為主要研究對(duì)象,探索混雜系統(tǒng)理論的應(yīng)用,為進(jìn)一步研究橋梁系統(tǒng)的混雜控制打下基礎(chǔ)。 首先,在綜述了結(jié)構(gòu)振動(dòng)控制以及混雜系統(tǒng)理論及應(yīng)用現(xiàn)狀的基礎(chǔ)上,通過對(duì)混合邏輯動(dòng)態(tài)模型(MLD)的相關(guān)介紹,探討了結(jié)構(gòu)的混雜特性,進(jìn)行了結(jié)構(gòu)混雜系統(tǒng)理論的適用性分析。 其次,進(jìn)行了施工狀態(tài)下斜拉橋橋塔的風(fēng)振MLD控制方法研究。建立橋塔模型,進(jìn)行結(jié)構(gòu)的自振特性分析及相關(guān)的動(dòng)力響應(yīng)分析,基于此設(shè)計(jì)控制方案,并根據(jù)MLD建模理論,進(jìn)行橋塔-ATMD系統(tǒng)的MLD模型推導(dǎo),最后,運(yùn)用MATLAB軟件編制程序進(jìn)行數(shù)值模擬,分析橋塔的減振效果,并和傳統(tǒng)的控制方法進(jìn)行對(duì)比。 再次,對(duì)地震荷載作用下成橋狀態(tài)的橋塔及主梁進(jìn)行了MLD控制方法研究。建立斜拉橋模型并對(duì)其進(jìn)行自振特性分析,分別針對(duì)橋塔和主梁進(jìn)行相應(yīng)的動(dòng)力響應(yīng)分析,綜合以上分析結(jié)果設(shè)計(jì)控制方案并進(jìn)行橋塔-ATMD和主梁-VDTMD系統(tǒng)的MLD模型推導(dǎo),然后運(yùn)用MATLAB軟件模擬分析減振效果,并和傳統(tǒng)的控制方法進(jìn)行對(duì)比。 最后,對(duì)比分析結(jié)果,得出結(jié)論：MLD對(duì)施工狀態(tài)的橋塔風(fēng)振控制以及地震荷載作用下成橋狀態(tài)的橋塔和主梁減振都有一定的效果,且效果相對(duì)較好,介于傳統(tǒng)主動(dòng)控制和被動(dòng)控制之間,驗(yàn)證了其應(yīng)用的有效性和適用性,為進(jìn)一步的研究奠定了基礎(chǔ)。
[Abstract]:Absrtact: cable-stayed bridge is a flexible structure system. Under the action of wind or earthquake, the dynamic response of cable-stayed bridge is very important to the safety of the structure, and the corresponding control measures are usually taken. At present, there are a lot of theoretical research and engineering applications for super large bridge control problems, but there is still a lack of in-depth research on cooperative prevention of multiple disasters. The topic of this paper comes from the important scientific and technological project of transportation construction in 2011, "Super large bridge disaster prevention and reduction and safety control technology", among which, the topic "the theoretical study of super large bridge disaster prevention and mitigation based on hybrid system" is a new theoretical exploration. The hybrid system theory is applied to the control of bridge system in order to provide new disaster theory analysis and control optimization technology for the bridges built or to be built in China. In this paper, the cable-stayed bridge members, the bridge tower and the main beam are taken as the main research objects, and the application of hybrid system theory is explored, which lays a foundation for further study on hybrid control of bridge system. Firstly, on the basis of summarizing the theory and application of structural vibration control and hybrid system, the hybrid characteristics of the structure are discussed by introducing the hybrid logic dynamic model (MLDs). The applicability of structural hybrid system theory is analyzed. Secondly, the wind vibration MLD control method of cable-stayed bridge tower under construction condition is studied. The bridge tower model is established, the natural vibration characteristic of the structure and the related dynamic response analysis are carried out. Based on this design control scheme, the MLD model of the bridge tower-ATMD system is deduced according to the MLD modeling theory. Finally, the model of the bridge tower-ATMD system is derived. The MATLAB software is used to program the numerical simulation to analyze the vibration reduction effect of the bridge tower, and to compare with the traditional control method. Thirdly, the MLD control method of bridge tower and main beam under seismic load is studied. The model of cable-stayed bridge is established and its natural vibration characteristic is analyzed. The corresponding dynamic response analysis is carried out for the tower and the main girder respectively. The control scheme is designed and the MLD model of the tower and main girder is derived by synthesizing the above analysis results. Then MATLAB software is used to simulate and analyze the damping effect, and compared with the traditional control method. Finally, by comparing and analyzing the results, we draw a conclusion that the wind vibration control of the bridge tower under the construction state and the vibration reduction of the bridge tower and the main girder under the earthquake load have certain effect, and the effect is relatively good. Between the traditional active control and passive control, the validity and applicability of the application are verified, which lays a foundation for further research.
【學(xué)位授予單位】：北京交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：U448.27

【參考文獻(xiàn)】

相關(guān)期刊論文 前9條

1 史志利,周立志;大跨度橋梁抗震設(shè)計(jì)和振動(dòng)控制的研究與應(yīng)用現(xiàn)狀[J];城市道橋與防洪;2002年04期

2 李忠獻(xiàn)，王森林，姜忻良;高層建筑地震反應(yīng)最優(yōu)多重TLD控制[J];地震工程與工程振動(dòng);1996年04期

3 李忠獻(xiàn),張偉,姜忻良,鄭志杰;高層建筑地震反應(yīng)全反饋主動(dòng) TMD 控制理論研究[J];地震工程與工程振動(dòng);1997年03期

4 呂書強(qiáng),秦世引,宋永華;混雜電力系統(tǒng)頻率緊急控制的Petri網(wǎng)建模與仿真[J];電力系統(tǒng)自動(dòng)化;2001年06期

5 張耀宏,顧金鈞;主動(dòng)質(zhì)量減振器在PC斜拉橋上的應(yīng)用──減少施工中PC斜拉橋主梁風(fēng)致上下的振動(dòng)[J];國(guó)外橋梁;1997年02期

6 陳開利,劉海燕;美國(guó)金門橋的抗震加固[J];國(guó)外橋梁;1999年03期

7 趙臣,張小剛,呂偉平;具有空間相關(guān)性風(fēng)場(chǎng)的計(jì)算機(jī)模擬[J];空間結(jié)構(gòu);1996年02期

8 每綱,沈亞鵬,王健;建筑結(jié)構(gòu)振動(dòng)控制的發(fā)展動(dòng)態(tài)[J];力學(xué)進(jìn)展;1998年04期

9 孫劍平,朱f^;結(jié)構(gòu)控制方法評(píng)述[J];力學(xué)進(jìn)展;2000年04期

，

本文編號(hào)：1882740