本文選題：自錨式懸索橋 + 模型試驗(yàn)��； 參考：《北京工業(yè)大學(xué)》2014年碩士論文

【摘要】：近年來，由于經(jīng)濟(jì)發(fā)展的需求，大跨度橋梁在我國飛速發(fā)展。自錨式懸索橋具有外形優(yōu)美、適應(yīng)性能力強(qiáng)等優(yōu)點(diǎn)，在橋型選擇時(shí)，受到設(shè)計(jì)者的青睞。但自錨式懸索橋的合理成橋狀態(tài)是設(shè)計(jì)難點(diǎn)，而且在施工階段大位移非線性問題非常突出，吊索張拉成為施工難點(diǎn)。而有限元模擬和縮尺模型試驗(yàn)是研究合理成橋狀態(tài)和施工過程的重要手段。本文以某非對稱獨(dú)塔自錨式懸索橋?yàn)楣こ瘫尘埃O(shè)計(jì)并制作了縮尺模型，對施工全過程進(jìn)行了模擬，并對幾種索力張拉優(yōu)化方案進(jìn)行了試驗(yàn)驗(yàn)證，，最后對其地震響應(yīng)規(guī)律及減隔震控制進(jìn)行了初步探討，為其后續(xù)的振動臺試驗(yàn)進(jìn)行了一些鋪墊，本文的主要內(nèi)容如下： 1.以某獨(dú)塔自錨式懸索橋?yàn)樵�，按照幾何縮尺比1:20設(shè)計(jì)并制作了其縮尺試驗(yàn)?zāi)Ｐ�，通過測試縮尺模型的動力特性參數(shù)，并與原橋成橋荷載試驗(yàn)得到的動力特性參數(shù)進(jìn)行對比，驗(yàn)證了縮尺模型橋設(shè)計(jì)與制作的準(zhǔn)確性，能夠反映原橋的整體受力性能。 2.通過縮尺模型對施工全過程進(jìn)行模擬并與原橋施工過程進(jìn)行對比。通過對原橋施工階段進(jìn)行監(jiān)控，并嚴(yán)格按照原橋施工階段設(shè)計(jì)模型橋的施工順序，吊桿采用分階段張拉的方式，開展了模擬施工全過程的模型試驗(yàn)研究。對模型橋成橋的索力和幾何坐標(biāo)反推到原型橋并與原橋進(jìn)行對比誤差較小，能夠真實(shí)反映實(shí)際橋梁的施工全過程。 3.根據(jù)索力張拉優(yōu)化理論，設(shè)計(jì)4種吊索張拉優(yōu)化方案，并對其進(jìn)行數(shù)值模擬和模型試驗(yàn)研究。通過理論與試驗(yàn)研究驗(yàn)證了不同張拉優(yōu)化方案的優(yōu)劣性。 4.對自錨式懸索橋的地震響應(yīng)規(guī)律及基于高阻尼隔震支座的減隔震控制進(jìn)行了探討。指出由于自錨式懸索橋?yàn)殚L周期結(jié)構(gòu)，在近場地震激勵(lì)下動力響應(yīng)比遠(yuǎn)場激勵(lì)下更大，基于高阻尼隔震支座能夠起到一定的減隔震效果。
[Abstract]:In recent years, due to the demand of economic development, long-span bridges are developing rapidly in China. Self-anchored suspension bridge has many advantages such as beautiful shape and strong adaptability. However, the reasonable state of self-anchored suspension bridge is a difficult point in design, and the nonlinear problem of large displacement is very prominent in the construction stage, and the tension of sling becomes a difficult point in construction. Finite element simulation and scale model test are important means to study the reasonable state and construction process of the bridge. In this paper, based on the engineering background of an asymmetric self-anchored suspension bridge with single tower, the scale model is designed and made, the whole construction process is simulated, and several kinds of cable tension optimization schemes are tested and verified. Finally, the law of seismic response and the control of seismic isolation are preliminarily discussed. The main contents of this paper are as follows: 1. Taking a single tower self-anchored suspension bridge as the prototype, the scale test model is designed and made according to the 1:20 geometric scale ratio. The dynamic characteristic parameters of the scale model are tested and compared with the dynamic characteristic parameters obtained from the load test of the original bridge. The accuracy of the design and manufacture of the model bridge is verified, which can reflect the overall mechanical performance of the original bridge. 2. The whole construction process is simulated by scale model and compared with the original bridge construction process. By monitoring the construction stage of the original bridge and strictly according to the construction sequence of the model bridge designed in the construction stage of the original bridge, the model test study of simulating the whole construction process was carried out by using the method of stage tension of the suspension rod. The cable force and geometric coordinates of the model bridge are pushed back to the prototype bridge and compared with the original bridge, which can reflect the whole construction process of the actual bridge. 3. According to the theory of cable tension optimization, four kinds of sling tension optimization schemes are designed, and the numerical simulation and model test are carried out. The advantages and disadvantages of different tensile optimization schemes are verified by theoretical and experimental research. 4. The seismic response law of self-anchored suspension bridge and the isolation control based on high damping isolation support are discussed. It is pointed out that since self-anchored suspension bridge is a long-period structure, the dynamic response of self-anchored suspension bridge under near-field earthquake excitation is greater than that under far-field excitation, and the isolation bearing based on high damping can play a certain isolation effect.
【學(xué)位授予單位】：北京工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：U448.25

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 李亞非,顏東煌,田仲初;大型三塔斜拉橋鋁合金試驗(yàn)?zāi)Ｐ偷难兄芠J];長沙交通學(xué)院學(xué)報(bào);2000年03期

2 蘇經(jīng)宇,曾德民;我國建筑結(jié)構(gòu)隔震技術(shù)的研究和應(yīng)用[J];地震工程與工程振動;2001年S1期

3 石磊,張哲,劉春城,檀永剛;混凝土自錨式懸索橋設(shè)計(jì)及其力學(xué)性能分析[J];大連理工大學(xué)學(xué)報(bào);2003年02期

4 袁涌;朱昆;熊世樹;資道銘;;高阻尼橡膠隔震支座的力學(xué)性能及隔震效果研究[J];工程抗震與加固改造;2008年03期

5 檀永剛;張哲;嚴(yán)偉飛;;自錨式懸索橋施工控制中的力學(xué)特性[J];公路交通科技;2006年06期

6 鄧志剛,黎世彬;曲線斜拉橋的現(xiàn)場試驗(yàn)、模型試驗(yàn)及數(shù)值分析[J];公路交通技術(shù);2000年04期

7 高小云;;日本Konohana橋[J];國外公路;1993年01期

8 張哲,竇鵬,石磊,劉春城;自錨式懸索橋的發(fā)展綜述[J];世界橋梁;2003年01期

9 候?qū)毬?日本隔震技術(shù)的新發(fā)展與控震技術(shù)的實(shí)際應(yīng)用[J];工業(yè)建筑;2000年11期

10 梁煒;;自錨式懸索橋——麗澤橋的設(shè)計(jì)和計(jì)算[J];城市道橋與防洪;2012年06期

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