【摘要】：在我國橋梁工程中,橋墩是橋梁的最薄弱部位,對于橋墩的抗震試驗研究是整個橋梁抗震研究工作的基礎(chǔ)。目前國內(nèi)外對于單個橋墩構(gòu)件的抗震試驗研究較多,但大都以圓形、矩形實心墩為主,對于其他截面的橋墩抗震性能試驗研究較少,因此,研究矩形空心橋墩的抗震性能具有很好的工程實際意義。為了更好地重現(xiàn)地震全過程和各種地震波作用,本論文對鋼筋混凝土矩形空心橋墩進行地震模擬振動臺試驗,并設(shè)計試驗方案和配重方案,對配重箱進行有限元軟件模擬。主要工作有:(1)對配箍率不同的2個鋼筋混凝土矩形空心橋墩按一致相似律進行縮尺模型并對其進行地震模擬振動臺試驗研究。(2)設(shè)計并制作2個鋼筋混凝土矩形空心橋墩,總結(jié)出一套完整的試驗方案。(3)設(shè)計配重方案并按方案制作一配重箱用來承擔(dān)上部荷載作用。(4)對配重箱進行Abaqus有限元軟件模擬,從應(yīng)力、加速度及位移等因素來評價配重箱的強度要求和抗震要求。研究發(fā)現(xiàn),此類矩形空心橋墩的設(shè)計能夠滿足試驗的理論要求,配重箱的設(shè)計能夠滿足整個試驗的破壞要求,并為橋墩提供人工質(zhì)量模擬。本文的試驗研究成果可供實際工程作為參考。
[Abstract]:In the bridge engineering of our country, the pier is the weakest part of the bridge, and the seismic test research of the pier is the foundation of the whole bridge anti-seismic research work. At present, there are a lot of researches on seismic tests of single pier members at home and abroad, but most of them are circular and rectangular solid piers, and there is little research on seismic performance of pier of other sections, so there is little research on seismic performance of piers with other cross-sections. It is of great practical significance to study the seismic performance of rectangular hollow piers. In order to reproduce the whole seismic process and all kinds of seismic waves, the shaking table tests of reinforced concrete rectangular hollow piers are carried out in this paper, and the test scheme and weighing scheme are designed, and the finite element software simulation of the counterweight box is carried out. The main work is as follows: (1) two reinforced concrete rectangular hollow piers with different stirrups are modeled according to the uniform similarity law and simulated shaking table tests are carried out. (2) two reinforcement bars are designed and fabricated. Concrete rectangular hollow pier, A complete set of test scheme is summarized. (3) the counterweight scheme is designed and a counterweight box is made according to the scheme to bear the upper load. (4) the Abaqus finite element software is used to simulate the counterweight box, from the stress, Acceleration and displacement are used to evaluate the strength and seismic requirements of the counterweight box. It is found that the design of this kind of rectangular hollow piers can meet the theoretical requirements of the test and the design of the counterweight box can meet the failure requirements of the whole test and provide artificial mass simulation for the piers. The experimental results of this paper can be used as a reference for practical engineering.
【學(xué)位授予單位】：河北工程大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：U446

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本文編號：2454548