本文選題：多塔斜拉橋　切入點(diǎn)：結(jié)構(gòu)減震控制　出處：《東南大學(xué)》2015年博士論文

【摘要】：多塔斜拉橋結(jié)構(gòu)的抗震性能與減震控制是目前國(guó)內(nèi)外學(xué)術(shù)界與工程界的熱點(diǎn)研究領(lǐng)域。為了保障多塔斜拉橋結(jié)構(gòu)的抗震安全性,需要結(jié)合多塔斜拉橋的自身力學(xué)特性及其地震動(dòng)特性展開深入的研究。本文圍繞近斷層地震動(dòng)作用下多塔斜拉橋抗震安全這個(gè)主題,從多塔斜拉橋地震動(dòng)強(qiáng)度指標(biāo)、多塔斜拉橋結(jié)構(gòu)抗震性能、多塔斜拉橋結(jié)構(gòu)振動(dòng)控制特性、多塔斜拉橋結(jié)構(gòu)被動(dòng)優(yōu)化控制方法以及結(jié)構(gòu)混合控制方法等5個(gè)方面較系統(tǒng)地開展近斷層地震動(dòng)作用下多塔斜拉橋結(jié)構(gòu)減震控制研究,本文的主要工作和成果如下：1、開展了近斷層地震動(dòng)作用下結(jié)構(gòu)地震動(dòng)強(qiáng)度指標(biāo)研究。提出了近斷層地震動(dòng)作用下適用于中長(zhǎng)周期結(jié)構(gòu)的地震動(dòng)強(qiáng)度指標(biāo),結(jié)合最不利設(shè)計(jì)地震動(dòng)概念,提出了適用于中長(zhǎng)周期結(jié)構(gòu)的最不利設(shè)計(jì)近斷層地震動(dòng)。在此基礎(chǔ)上,針對(duì)不同場(chǎng)地條件及結(jié)構(gòu)自振周期分別給出了7組最不利設(shè)計(jì)近斷層地震動(dòng)用于中長(zhǎng)周期結(jié)構(gòu)的動(dòng)力時(shí)程分析。2、開展了近斷層地震動(dòng)作用下多塔斜拉橋抗震性能研究。重點(diǎn)討論了近斷層地震動(dòng)作用下多塔斜拉橋采用縱向部分固結(jié)體系和縱向全自由體系的地震反應(yīng)特點(diǎn),明確了多塔斜拉橋采用不同縱向結(jié)構(gòu)體系的主要控制目標(biāo)。研究結(jié)果表明：近斷層地震動(dòng)作用下多塔斜拉橋采用縱向部分固結(jié)體系的主要控制目標(biāo)是減小塔梁縱向固結(jié)處過(guò)大的塔底縱向內(nèi)力,而縱向全自由體系主要是減小過(guò)大的塔底縱向彎矩、塔頂縱向位移以及塔梁和墩梁縱向相對(duì)位移。3、開展了近斷層地震動(dòng)作用下多塔斜拉橋振動(dòng)控制特性研究。重點(diǎn)分析了近斷層地震動(dòng)作用下多塔斜拉橋不同縱向結(jié)構(gòu)體系采用粘滯阻尼器和彈性拉索的振動(dòng)控制特性,明確了近斷層地震動(dòng)作用下多塔斜拉橋不同縱向結(jié)構(gòu)體系的適宜被動(dòng)控制裝置。研究結(jié)果表明：粘滯阻尼器應(yīng)用于多塔斜拉橋縱向部分固結(jié)體系的減震控制效果優(yōu)于彈性拉索,而粘滯阻尼器和彈性拉索都適用于多塔斜拉橋縱向全自由體系的減震控制。4、開展了近斷層地震動(dòng)作用下多塔斜拉橋被動(dòng)控制方法研究。首先聯(lián)合應(yīng)用響應(yīng)面法與多目標(biāo)遺傳算法提出了近斷層地震動(dòng)作用下多塔斜拉橋結(jié)構(gòu)減震優(yōu)化控制方法。在此基礎(chǔ)上,針對(duì)多塔斜拉橋縱向部分固結(jié)體系塔底縱向內(nèi)力控制的矛盾性,建立了采用粘滯阻尼器的被動(dòng)控制優(yōu)化分析方法；針對(duì)多塔斜拉橋縱向全自由體系提出了粘滯阻尼器和彈性拉索綜合控制體系及其兩階段優(yōu)化分析方法。5、開展了近斷層地震動(dòng)作用下多塔斜拉橋混合控制方法研究。采用經(jīng)典線性最優(yōu)控制算法和限界Hrovat最優(yōu)控制算法開展了基于MR阻尼器的多塔斜拉橋半主動(dòng)控制分析,給出了縱向部分固結(jié)體系和縱向全自由體系的最優(yōu)半主動(dòng)控制方案。在此基礎(chǔ)上提出了多塔斜拉橋混合控制系統(tǒng)以“被動(dòng)控制為主、半主動(dòng)控制為輔”的設(shè)計(jì)策略,建立了多塔斜拉橋縱向部分固結(jié)體系和縱向全自由體系的混合控制方法。
[Abstract]:The seismic performance and vibration control of cable-stayed bridge is currently a hot research field in domestic and foreign academia and engineering. In order to ensure the seismic safety of the cable-stayed bridge structure, need to combine its own characteristics and mechanics to cable-stayed bridge vibration characteristics in-depth research. This paper focuses on the near fault ground motion. Under the theme of cable-stayed bridge seismic safety, the cable-stayed bridge seismic strength index, cable-stayed bridge structure seismic performance, control characteristics of multi tower cable-stayed bridge structure vibration, 5 aspects of cable-stayed bridge structure optimization of passive hybrid control method and structure control method to systematically carry out near fault ground motions under the action of multi tower cable-stayed bridge structure vibration control research, the main work and achievements are as follows: 1, structure seismic intensity index of the near fault ground motion is proposed. The near fault The vibration intensity index level seismic for long period structure, with the most unfavorable seismic design concept, put forward the most unfavorable design for long period structure of near fault ground motions. Based on this, for power in long period structures, different site conditions and structural vibration period respectively given the 7 groups of the most unfavorable design of near fault ground motion time history analysis of.2, study on the seismic performance of cable-stayed bridge under the action of the near fault ground motions are discussed. Under the action of multi tower cable-stayed bridge by using seismic response characteristics of vertical part consolidation system and full longitudinal free system of near fault ground motion, the main the control target with different vertical structure system of cable-stayed bridge. The results show that the main control objectives of near fault ground motion under the action of multi tower cable-stayed bridge with longitudinal section consolidation system is reducing the turret At the large longitudinal beam consolidation bottom longitudinal internal force, and the longitudinal free system is reducing the excessive longitudinal bending moment of tower bottom, the longitudinal displacement and tower girder and pier beam longitudinal displacement of.3, under the action of multi tower cable-stayed bridge vibration control was carried out to study the characteristics of near fault ground motions. Focus on the analysis of the characteristics of vibration under the control of multi tower cable-stayed bridge with different longitudinal structure with viscous dampers and elastic cables near fault ground motion, the near fault ground motion under the action of multi tower cable-stayed bridge with different longitudinal structure suitable for passive control devices. The results show that the vibration control effect is better than that of elastic cable viscous damper used in cable-stayed bridge the longitudinal part consolidation system, while the viscous and elastic cables are suitable for cable-stayed bridge longitudinal vibration control system of the free.4, the near fault ground motion. Passive control method of multi tower cable-stayed bridge. The combined application of response surface method and multi-objective genetic algorithm is presented for near fault ground motions under the action of multi tower cable-stayed bridge structure vibration control optimization method. On this basis, the cable-stayed bridge longitudinal section of tower bottom longitudinal contradiction consolidation system of internal control, established by the optimization method of passive control of viscous damper; multi tower cable-stayed bridge for the full longitudinal free system put forward the comprehensive control system of viscous damper and elastic cable and two phase optimization method of.5, the near fault earthquake under the action of multi pylon cable stayed bridge hybrid control method research. Using the classical algorithm and bound Hrovat optimal control algorithm is carried out MR damper cable-stayed bridge analysis of semi-active control based on linear optimal control, given the longitudinal part consolidation system and vertical free system The optimal active control scheme. The half is proposed based on the hybrid control system based on passive control of cable-stayed bridge, the design of semi-active control strategy supplemented by "the established method of hybrid control system and the vertical longitudinal section consolidation system of cable-stayed bridge.

【學(xué)位授予單位】：東南大學(xué)
【學(xué)位級(jí)別】：博士
【學(xué)位授予年份】：2015
【分類號(hào)】：U442.55;U448.27

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 陳水生;馬涌泉;;基于MRD與LRB混合控制的隔震連續(xù)梁橋地震響應(yīng)[J];北京工業(yè)大學(xué)學(xué)報(bào);2013年03期

2 程曄;周翠英;黃林沖;文建華;;多元指數(shù)插值響應(yīng)面方法分析復(fù)雜結(jié)構(gòu)可靠度[J];深圳大學(xué)學(xué)報(bào)(理工版);2012年05期

3 游新鵬;彭成明;王騎;;多塔斜拉橋施工態(tài)抖振時(shí)域分析[J];中外公路;2011年02期

4 Shehata E. Abdel Raheem;Toshiro Hayashikawa;Uwe Dorka;;Ground motion spatial variability effects on seismic response control of cable-stayed bridges[J];Earthquake Engineering and Engineering Vibration;2011年01期

5 方圓;李建中;彭天波;鄧育林;;行波效應(yīng)對(duì)大跨度多塔斜拉橋地震反應(yīng)影響[J];振動(dòng)與沖擊;2010年10期

6 翟長(zhǎng)海;張林春;李爽;謝禮立;;近場(chǎng)地震動(dòng)對(duì)大跨剛構(gòu)橋影響的分析[J];防災(zāi)減災(zāi)工程學(xué)報(bào);2010年S1期

7 金立新;郭慧乾;;多塔斜拉橋發(fā)展綜述[J];公路;2010年07期

8 焦馳宇;李建中;彭天波;;塔梁連接方式對(duì)大跨斜拉橋地震反應(yīng)的影響[J];振動(dòng)與沖擊;2009年10期

9 葉列平;馬千里;繆志偉;;結(jié)構(gòu)抗震分析用地震動(dòng)強(qiáng)度指標(biāo)的研究[J];地震工程與工程振動(dòng);2009年04期

10 馮云成;燕斌;牟宗軍;;彈性索和阻尼器對(duì)斜拉橋橫向抗震性能的影響[J];工程抗震與加固改造;2009年04期

相關(guān)博士學(xué)位論文 前4條

1 劉啟方;基于運(yùn)動(dòng)學(xué)和動(dòng)力學(xué)震源模型的近斷層地震動(dòng)研究[D];中國(guó)地震局工程力學(xué)研究所;2005年

2 楊孟剛;磁流變阻尼器在大跨度橋梁上的減震理論研究[D];中南大學(xué);2004年

3 王海云;近場(chǎng)強(qiáng)地震動(dòng)預(yù)測(cè)的有限斷層震源模型[D];中國(guó)地震局工程力學(xué)研究所;2004年

4 鄔U喕，

本文編號(hào)：1664077