本文選題：波紋鋼腹板連續(xù)剛構(gòu)橋 + 橋墩高度��； 參考：《西南交通大學(xué)》2017年碩士論文

【摘要】：波紋鋼腹板連續(xù)剛構(gòu)橋與混凝土腹板連續(xù)剛構(gòu)橋相比,在構(gòu)造、受力性能及經(jīng)濟(jì)效益等方面具有較大的優(yōu)勢(shì)。國(guó)內(nèi)外對(duì)波紋鋼腹板連續(xù)剛構(gòu)橋的研究主要集中在在靜力方面,對(duì)其動(dòng)力性能的研究相對(duì)較少。隨著波紋鋼腹板連續(xù)剛構(gòu)橋的逐步應(yīng)用,對(duì)其開(kāi)展地震響應(yīng)及減震措施的研究意義重大。本文以某波紋鋼腹板連續(xù)剛構(gòu)橋?yàn)楣こ瘫尘?建立全橋有限元分析模型,采用反應(yīng)譜法和時(shí)程分析法對(duì)其進(jìn)行了地震響應(yīng)及減震措施的研究。主要內(nèi)容如下:(1)歸納總結(jié)了波紋鋼腹板組合箱梁橋的特點(diǎn)及地震響應(yīng)分析的研究現(xiàn)狀,并介紹了橋梁地震反應(yīng)分析時(shí)常用的靜力法、反應(yīng)譜法及時(shí)程分析法。(2)依據(jù)某實(shí)際工程,采用Midas Civil建立全橋有限元分析模型,采用反應(yīng)譜法,研究了橋墩高度對(duì)波紋鋼腹板連續(xù)剛構(gòu)橋動(dòng)力特性及E1地震動(dòng)作用下的主梁位移及內(nèi)力、橋墩位移及內(nèi)力的影響。(3)利用上面建立的全橋有限元分析模型,采用時(shí)程分析法,研究了非巖石地基土比例系數(shù)m(20000kN/m~4、40000kN/m~4、60000kN/m~4、80000kN/m~4、100000kN/m~4)對(duì)波紋鋼腹板連續(xù)剛構(gòu)橋動(dòng)力特性及E2地震動(dòng)作用下的主梁位移及內(nèi)力、橋墩位移及內(nèi)力的影響。(4)依據(jù)該波紋鋼腹板連續(xù)剛構(gòu)橋的實(shí)際地質(zhì)情況,建立考慮樁土效應(yīng)的m法模型和不考慮樁土效應(yīng)的直接嵌固模型,采用時(shí)程分析法,探討了不考慮樁土效應(yīng)對(duì)波紋鋼腹板連續(xù)剛構(gòu)橋動(dòng)力特性及E2地震動(dòng)作用下的主梁位移及內(nèi)力、橋墩位移及內(nèi)力的影響。(5)按照橋梁減隔震原理,利用第三章建立的全橋有限元分析模型,研究粘滯阻尼器的阻尼系數(shù)、速度指數(shù)及阻尼器剛度對(duì)橋梁減震效果的影響,得到了粘滯阻尼器的合理阻尼器參數(shù)。
[Abstract]:Compared with concrete web continuous rigid frame bridge, corrugated steel web continuous rigid frame bridge has great advantages in construction, mechanical performance and economic benefit. The research of corrugated steel web continuous rigid frame bridge at home and abroad is mainly focused on static force, but the research on its dynamic performance is relatively few. With the gradual application of corrugated steel web continuous rigid frame bridge, it is of great significance to study its seismic response and seismic absorption measures. Based on the engineering background of a corrugated steel web continuous rigid frame bridge, the finite element analysis model of the whole bridge is established in this paper. The seismic response and damping measures are studied by using the response spectrum method and time history analysis method. The main contents are as follows: (1) the characteristics of corrugated steel web composite box girder bridge and the research status of seismic response analysis are summarized, and the static method commonly used in bridge seismic response analysis is introduced. The finite element analysis model of the whole bridge is established by Midas Civil. The dynamic characteristics of the bridge pier height to corrugated steel web continuous rigid frame bridge and the displacement and internal force of the main beam under the action of E1 ground motion are studied by using the response spectrum method. The influence of pier displacement and internal force. (3) using the finite element analysis model established above, the time history analysis method is used. The dynamic characteristics of continuous rigid frame bridge with corrugated steel webs and the displacement and internal force of main beam under E2 ground motion are studied. According to the actual geological conditions of the corrugated steel web continuous rigid frame bridge, the m method model considering the pile-soil effect and the direct solid model without considering the pile-soil effect are established, and the time history analysis method is adopted. The dynamic characteristics of continuous rigid frame bridge with corrugated steel webs and the effects of displacement and internal force of main beam, pier displacement and internal force under the action of E _ 2 ground motion without considering the pile-soil effect are discussed. The influence of damping coefficient, velocity exponent and damper stiffness on the damping effect of the viscous damper is studied by using the full bridge finite element analysis model established in chapter 3. The reasonable damper parameters of the viscous damper are obtained.
【學(xué)位授予單位】：西南交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類(lèi)號(hào)】：U442.55;U448.23

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