本文關(guān)鍵詞： OpenSees 空心橋墩 動(dòng)力分析 推倒分析　出處：《河北工程大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

【摘要】：本文中，對(duì)鋼筋混凝土空心橋墩模型進(jìn)行靜力Pushover分析和動(dòng)力時(shí)程分析，采用的軟件是有限元分析軟件OpenSees。模型的建模是根據(jù)已做過的試驗(yàn)中所采用模型來進(jìn)行的，然后對(duì)模型進(jìn)行靜力Pushover分析來比較模型的承載能力和延性的大小，再對(duì)模型進(jìn)行動(dòng)力時(shí)程分析，比較不同模型的時(shí)程曲線，對(duì)比不同模型在多維地震動(dòng)作用下的抗震性能表現(xiàn)，找出不同結(jié)構(gòu)參數(shù)對(duì)結(jié)構(gòu)模型在多維地震動(dòng)作用下抗震性能的影響。 地震發(fā)生時(shí)的地面運(yùn)動(dòng)是的三維的，關(guān)于多維地震動(dòng)的研究也越來越多，，越來越必要。通過地面運(yùn)動(dòng)的地震波是非常復(fù)雜的，每個(gè)點(diǎn)的振動(dòng)速度，振動(dòng)周期與振動(dòng)相位是不同的。由于地面上的各個(gè)質(zhì)點(diǎn)間運(yùn)動(dòng)的差別，可使地面不但產(chǎn)生三個(gè)平動(dòng)分量，而且還產(chǎn)生三個(gè)轉(zhuǎn)動(dòng)分量。本文進(jìn)行的動(dòng)力分析是對(duì)空心橋墩模型同時(shí)施加三個(gè)方向的地震動(dòng)，即一個(gè)豎向和兩個(gè)水平正交方向同時(shí)對(duì)空心橋墩進(jìn)行地震動(dòng)響應(yīng)分析。 因此，本文采用了OpenSees軟件，用于空心橋墩模型的抗震性能在多維地震反應(yīng)分析，分析結(jié)果具有一定的研究意義。本文進(jìn)行了如下幾個(gè)方面的工作： 1.通過空心橋墩的破壞形式分析，了解可能會(huì)影響橋墩抗震性能的一些因素。 2.以實(shí)驗(yàn)實(shí)例為模型建立相應(yīng)的OpenSees數(shù)值模型，并與實(shí)驗(yàn)結(jié)果對(duì)比，驗(yàn)證OPENSEES模擬計(jì)算的精確性。 3.采用OpenSees軟件，對(duì)模型進(jìn)行靜力分析和動(dòng)力時(shí)程分析，研究在不同的軸壓比，配筋率，高寬比，體積配箍率對(duì)橋墩的抗震性能的影響。
[Abstract]:In this paper, static Pushover analysis and dynamic time history analysis of reinforced concrete hollow pier model are carried out. The software used is the finite element analysis software OpenSees. the modeling of the model is based on the model used in the experiments. Then the static Pushover analysis is carried out to compare the bearing capacity and ductility of the model, and then the dynamic time history of the model is analyzed to compare the time history curves of different models. By comparing the seismic behavior of different models under the action of multi-dimensional ground motion, the influence of different structural parameters on the seismic performance of the structural model under the action of multi-dimensional ground motion is found out. The ground motion is three-dimensional when the earthquake occurs, and the research on multi-dimensional ground motion is more and more necessary. The seismic wave passing through the ground motion is very complicated, and the vibration velocity of each point is very complex. The period of vibration is different from the phase of vibration. Due to the difference of motion between different particles on the ground, not only three moving components can be produced on the ground. In addition, three rotational components are produced. The dynamic analysis in this paper is to apply three directions of ground motion to the model of hollow bridge pier at the same time. One vertical and two horizontal orthogonal directions are used to analyze the ground motion response of hollow piers at the same time. Therefore, OpenSees software is used to analyze the seismic behavior of hollow pier model in multi-dimensional seismic response analysis. The results of the analysis are of certain significance. In this paper, the following aspects of work are carried out: 1. Through the analysis of the failure form of hollow piers, some factors which may affect the seismic performance of piers are understood. 2. Taking the experimental example as the model, the corresponding OpenSees numerical model is established, and compared with the experimental results, the accuracy of the OPENSEES simulation calculation is verified. 3. The influence of axial compression ratio, reinforcement ratio, aspect ratio and volume hoop ratio on the seismic performance of pier is studied by using OpenSees software.
【學(xué)位授予單位】：河北工程大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：U442.55;U443.22

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