本文選題：大跨徑人行索橋 + ANSYS��； 參考：《重慶交通大學》2014年碩士論文

【摘要】：人行索橋作為懸索橋的一種，既擁有懸索橋的跨越能力大，造型美觀的優(yōu)點，又具有施工快速，經(jīng)濟性好，容易適應(yīng)各種地形狀況的優(yōu)點。人行索橋充分發(fā)揮主纜以及吊桿受拉強度大的特點，在橋塔高度不高的情況下仍然可以保持很大的跨越能力，在我國的中西部山區(qū)以及眾多旅游景區(qū)都有廣泛的應(yīng)用，在此類地區(qū)建設(shè)拱橋或者其他橋型不但施工的難度大，而且容易造成資源浪費，在景區(qū)則會造成與周邊環(huán)境的不協(xié)調(diào)。人行索橋由于使用目的明確，與其他類型的橋梁相比，無疑是一種相對最優(yōu)的選擇。 本文首先對人行索橋的研究背景以及現(xiàn)狀進行說明，確定論文主要的研究方向，然后采用ANSYS有限元軟件對大跨徑人行索橋進行了參數(shù)化建模，采用控制變量法對各參數(shù)分別討論，總結(jié)出了結(jié)構(gòu)參數(shù)對于人行索橋的動力特性尤其是自振頻率的影響，找出關(guān)鍵參數(shù)優(yōu)化結(jié)構(gòu)的動力性能，接著討論在人行荷載和風荷載作用下的人行索橋振動問題并提出控制建議。 抗風索是實際工程中廣泛使用的振動控制措施，通過對實際工程項目進行模態(tài)化處理，研究在不同形式的抗風索條件下，人行索橋的結(jié)構(gòu)動力響應(yīng)位移以及自振頻率的變化，總結(jié)出抗風索對不同跨徑下人行索橋的振動控制效果，最后提出不同形式的抗風索在人行索橋中的使用條件，，為以后的人行索橋的設(shè)計提供了經(jīng)驗。
[Abstract]:As a kind of suspension bridge, the footbridge not only has the advantages of large span ability and beautiful shape, but also has the advantages of fast construction, good economy and easy to adapt to various terrain conditions. The cable bridge of the people's Bank of China can give full play to the characteristics of high tensile strength of the main cables and suspenders, and can still maintain a very large span capability even when the height of the bridge tower is not high. It has been widely used in the mountainous areas of the central and western regions of China and in many tourist scenic spots. The construction of arch bridges or other bridges in such areas is not only difficult to construct, but also easy to cause waste of resources, which will lead to disharmony with the surrounding environment in scenic areas. Compared with other types of bridges, the bridge is undoubtedly a relatively optimal choice because of its clear purpose. In this paper, the research background and current situation of the cable-bridge are explained, and the main research direction of the paper is determined. Then, the parametric modeling of the long-span footbridge is carried out by using ANSYS finite element software. The control variable method is used to discuss the parameters, and the influence of the structural parameters on the dynamic characteristics, especially the natural vibration frequency, of the footbridge is summarized, and the key parameters are found to optimize the dynamic performance of the structure. Then the vibration of the footbridge under the action of pedestrian load and wind load is discussed and the control suggestions are put forward. Wind resistant cable is a widely used vibration control measure in practical engineering. Through modal treatment of actual project, the dynamic response displacement and natural vibration frequency of footbridge are studied under different wind cable conditions. The effect of wind cable on vibration control of footbridge with different span is summarized. Finally, the application conditions of different types of wind resistant cable in pedestrian cable bridge are put forward, which provides experience for the design of footbridge in the future.
【學位授予單位】：重慶交通大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：U441.3

【參考文獻】

相關(guān)期刊論文 前2條

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