【摘要】：近年來連續(xù)剛構(gòu)橋在我國獲得了大力的發(fā)展,特別是在我國西南部的山區(qū)中,高墩大跨的預(yù)應(yīng)力混凝土連續(xù)剛構(gòu)橋因其自身的眾多優(yōu)點(diǎn)而得到了廣泛的應(yīng)用。同時(shí)西南地區(qū)也是地震的多發(fā)地帶并且大多屬于高烈度地區(qū),因此對連續(xù)剛構(gòu)橋進(jìn)行罕遇地震下的非線性彈塑性地震反應(yīng)分析,研究其在罕遇地震作用下的彈塑性狀態(tài)是十分有必要的。本文首先簡述了連續(xù)剛構(gòu)橋的發(fā)展及其抗震研究的現(xiàn)狀,同時(shí)對延性抗震的理念進(jìn)行了簡要的介紹,并對橋梁結(jié)構(gòu)在地震響應(yīng)下的動(dòng)力分析理論知識和計(jì)算方法進(jìn)行了簡單的闡述;其次,以云南省馬過河連續(xù)剛構(gòu)橋?yàn)楣こ瘫尘?運(yùn)用大型通用有限元軟件MIDAS CIVIL建立了有限元模型,對其進(jìn)行了彈性動(dòng)力時(shí)程分析和彈塑性動(dòng)力時(shí)程分析.主要完成了以下幾項(xiàng)工作:1、介紹了國內(nèi)外連續(xù)剛構(gòu)橋的發(fā)展與彈塑性抗震分析的研究現(xiàn)狀,闡述了我國橋梁抗震設(shè)防的基本目標(biāo),并對延性抗震的理論進(jìn)行了簡要的介紹。2、介紹了橋梁結(jié)構(gòu)在地震響應(yīng)下的動(dòng)力分析基本原理和抗震設(shè)計(jì)中常用的一些計(jì)算方法。3、以云南馬過河連續(xù)剛構(gòu)橋?yàn)楣こ虒?shí)例背景,介紹了運(yùn)用大型有限元軟件MIDAS CIVIL的建模過程,并在考慮樁土作用后進(jìn)行其自振特性計(jì)算。4、分別運(yùn)用線彈性動(dòng)力時(shí)程分析方法和非線性彈塑性動(dòng)力時(shí)程分析方法在縱橋向和橫橋向上對其有限元模型進(jìn)行對比分析,同時(shí)對連續(xù)剛構(gòu)橋橋墩在彈塑性動(dòng)力時(shí)程分析下形成的轉(zhuǎn)角進(jìn)行研究,確定其塑性鉸出現(xiàn)的位置及轉(zhuǎn)角大小,判斷連續(xù)剛構(gòu)橋高墩在罕遇地震下的工作狀態(tài)。5、分別以橋墩系梁的個(gè)數(shù)和兩個(gè)橋墩之間的高差為研究對象,對模型在順橋向和橫橋向上進(jìn)行彈塑性動(dòng)力時(shí)程分析并進(jìn)行對比,研究其橋墩在罕遇地震作用下的內(nèi)力、位移和塑性鉸延性特性的變化情況,得出對罕遇地震抗震設(shè)計(jì)最有利的橋墩系梁個(gè)數(shù)和橋墩高差。
[Abstract]:In recent years, continuous rigid frame bridge has been greatly developed in our country, especially in the mountainous areas of southwest China, the prestressed concrete continuous rigid frame bridge with high pier and long span has been widely used because of its many advantages. At the same time, southwest China is also the prone zone of earthquakes and most of them belong to high intensity areas, so the nonlinear elastic-plastic seismic response of continuous rigid frame bridges under rare earthquakes is analyzed. It is necessary to study its elastic-plastic state under rare earthquakes. In this paper, the development of continuous rigid frame bridge and the present situation of seismic research are briefly described, and the concept of ductile seismic resistance is briefly introduced. The theoretical knowledge and calculation method of dynamic analysis of bridge structure under seismic response are briefly described. Secondly, taking the continuous rigid frame bridge in Yunnan Province as the engineering background, the finite element model is established by using the large-scale general finite element software MIDAS CIVIL, and the elastic dynamic time history analysis and elastic-plastic dynamic time history analysis are carried out. The main tasks are as follows: 1. The development of continuous rigid frame bridges at home and abroad and the research status of elastic-plastic seismic analysis are introduced, and the basic objectives of seismic fortification of bridges in China are expounded. The theory of ductile seismic resistance is briefly introduced. 2, the basic principle of dynamic analysis of bridge structure under seismic response and some commonly used calculation methods in seismic design are introduced. Taking the continuous rigid frame bridge of Ma Yue River in Yunnan Province as an engineering example, this paper introduces the modeling process of using large finite element software MIDAS CIVIL, and calculates its natural vibration characteristics after considering the action of pile and soil. The linear elastic dynamic time history analysis method and the nonlinear elastic plastic dynamic time history analysis method are used to compare and analyze the finite element model of the longitudinal bridge and the transverse bridge respectively. At the same time, the rotation angle formed by elastic-plastic dynamic time history analysis of continuous rigid frame bridge pier is studied, the position and rotation angle of plastic hinge are determined, and the working state of high pier of continuous rigid frame bridge under rare earthquake is judged. Taking the number of piers and the height difference between the two piers as the research objects, the elastic-plastic dynamic time history analysis and comparison of the model in the direction of the bridge and the upward direction of the bridge are carried out, and the internal forces of the piers under the action of rare earthquakes are studied. The number of pier beams and the height difference of piers which are most favorable for seismic design of rare earthquakes are obtained by the variation of displacement and ductile characteristics of plastic hinges.
【學(xué)位授予單位】：昆明理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：U448.23;U442.55

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 隋業(yè)輝;;質(zhì)速創(chuàng)奇跡 今踞亞洲雄——陜西咸旬高速三水河特大橋合龍紀(jì)實(shí)[J];施工企業(yè)管理;2015年03期

2 洪浩;鄭史雄;賈宏宇;于力;;空間相干效應(yīng)對山區(qū)高墩剛構(gòu)橋隨機(jī)地震動(dòng)響應(yīng)的影響[J];世界地震工程;2013年03期

3 方詩圣;章曉暉;方飛;洪剛;康小方;;行波效應(yīng)對預(yù)應(yīng)力混凝土曲線箱梁橋地震反應(yīng)的影響[J];工程與建設(shè);2012年02期

4 劉洪亮;;反應(yīng)譜法在橋梁抗震設(shè)計(jì)中的應(yīng)用[J];科技信息;2010年25期

5 冀偉;劉世忠;;動(dòng)水力作用時(shí)矩形空心墩剛構(gòu)橋地震響應(yīng)分析[J];世界地震工程;2010年02期

6 黃以實(shí);;對橋梁工程抗震分析方法的探討[J];企業(yè)科技與發(fā)展;2009年16期

7 黃方;王爽;;兩種彈塑性梁單元在橋梁地震響應(yīng)分析中的研究比較[J];中國西部科技;2009年23期

8 趙淳;楊朝暉;;橋梁抗震分析方法研究[J];現(xiàn)代商貿(mào)工業(yè);2009年01期

9 張哲威;李青寧;;現(xiàn)代城市橋梁結(jié)構(gòu)的發(fā)展[J];中外公路;2008年02期

10 于躍波;;淺談?lì)A(yù)應(yīng)力砼連續(xù)剛構(gòu)橋發(fā)展概況[J];科學(xué)之友(B版);2007年03期

相關(guān)博士學(xué)位論文 前1條

1 張方;大跨度預(yù)應(yīng)力混凝土梁橋時(shí)變性能及分析方法研究[D];西南交通大學(xué);2011年

相關(guān)碩士學(xué)位論文 前10條

1 劉敬坤;大跨徑波形鋼腹板梁橋與傳統(tǒng)梁橋的地震響應(yīng)對比研究[D];中南林業(yè)科技大學(xué);2014年

2 沈兆坤;橋梁結(jié)構(gòu)自振特性測試分析方法研究[D];重慶交通大學(xué);2014年

3 馬亞娟;城市軌道交通預(yù)應(yīng)力混凝土連續(xù)剛構(gòu)橋長期變形研究[D];北京交通大學(xué);2013年

4 曹科華;不對稱連續(xù)剛構(gòu)橋動(dòng)力特性分析[D];重慶交通大學(xué);2013年

5 王新偉;大跨徑連續(xù)剛構(gòu)橋一次合龍方案研究[D];長安大學(xué);2012年

6 徐軍;超高墩大跨度連續(xù)剛構(gòu)橋地震響應(yīng)研究[D];重慶交通大學(xué);2012年

7 曹升;高墩大跨預(yù)應(yīng)力混凝土連續(xù)剛構(gòu)模型橋試驗(yàn)研究[D];長安大學(xué);2011年

8 陳金濤;高墩大跨預(yù)應(yīng)力混凝土連續(xù)剛構(gòu)橋抗震性能研究[D];長安大學(xué);2011年

9 王飛婭;塑性鉸滯回模型衰變特性對RC框架結(jié)構(gòu)剛度的影響研究[D];長沙理工大學(xué);2011年

10 侯鵬飛;高墩大跨度連續(xù)剛構(gòu)橋梁結(jié)構(gòu)抗震性能研究[D];中南大學(xué);2010年

，

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