本文選題：供水管道　切入點：振動　出處：《沈陽工業(yè)大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

【摘要】：伴隨著城鎮(zhèn)化步伐不斷加快城市人口也不斷怎加，為滿足住房需要，高層建筑隨之興起，高層住宅雖然能夠滿足居民的住房需求，但是還有諸多問題需要解決。其中供水管道噪聲問題越來越受到人們的重視。供水管道引發(fā)的噪聲會輕易地穿透墻壁，損害居民健康，甚至在夜間會讓人無法休息。建筑單位在施工時，又會忽略管道振動所引發(fā)的噪聲，這就造成居民入住后還要對管道系統(tǒng)再次進行隔聲處理，這樣既浪費金錢、又浪費資源。問題嚴(yán)重時甚至還要對管道進行重新設(shè)計并改造，這樣也增加了這棟建筑的安全隱患。因此有供水管噪聲應(yīng)該急需得到解決。本文主要闡述了有關(guān)供水管道壓力振動的產(chǎn)生機理、壓力振動建模、仿真計算，并結(jié)合弦振動方程從管道外部對管道進行壓力振動分析，并對分析結(jié)果進行了對比驗證。在管道降噪方面，本文主要介紹了幾種常見的降噪方法，指出這幾種方法的優(yōu)缺點，并提出了自己的設(shè)想。論文引入弦振動方程求解管道壓力振動，將固定在墻上的每一節(jié)管道視為兩段固定的弦，，當(dāng)管道發(fā)生振動時本身會發(fā)生抖動，這就相當(dāng)于有人波動了張緊的弦，而波動弦的外力就是管道的壓力振動。通過ANSYS軟件對管道進行模態(tài)與振型分析得出了前五階模態(tài)與振型，推導(dǎo)出振型的數(shù)學(xué)表達式。將表達式帶入弦振動方程并且應(yīng)用Matlab軟件計算壓力振動，得出的結(jié)果與其他論文進行比較結(jié)果大致相同，從理論上證明了這種方法的可行性。這種方法能夠?qū)崿F(xiàn)從管道外部測量管道的壓力振動，并且能夠?qū)Ρ裙艿栏魈幍膲毫φ駝哟笮砼袛嗾駝赢a(chǎn)生的位置以便于治理管道振動。關(guān)于管道問題還應(yīng)該結(jié)合現(xiàn)有方法進行綜合治理，對于高層管道應(yīng)該把研究的重點放在污水流速上，使之能夠根據(jù)居民用水量進行自動調(diào)控，并且結(jié)構(gòu)簡單、安全，只有這樣才能夠從根本上解決管道的噪聲問題。
[Abstract]:With the pace of urbanization speeding up the urban population is also constantly increasing, in order to meet the housing needs, high-rise buildings rise, although high-rise housing can meet the housing needs of residents, But there are still many problems to be solved. Among them, the noise problem of the water supply pipeline has been paid more and more attention. The noise caused by the water supply pipe can easily penetrate the wall and harm the health of the residents. Even at night, people can't rest. When building units are building, they ignore the noise caused by the vibration of the pipes, which results in the residents having to deal with the pipes again after they move in, which is a waste of money. A waste of resources. If the problem is serious, the pipeline will even have to be redesigned and modified. Therefore, the noise of water supply pipes should be solved urgently. This paper mainly expounds the mechanism of pressure vibration of water supply pipeline, the modeling of pressure vibration, and the simulation calculation. Combined with the string vibration equation, the pressure vibration of the pipeline is analyzed from the outside of the pipeline, and the analysis results are compared and verified. In the aspect of pipeline noise reduction, this paper mainly introduces several common noise reduction methods, and points out the advantages and disadvantages of these methods. In this paper, the chord vibration equation is introduced to solve the pressure vibration of the pipeline. Each pipe fixed on the wall is regarded as two fixed chords, and the vibration will occur when the pipeline vibrates. This is equivalent to the wave of the tensioned string, and the external force of the wave string is the pressure vibration of the pipeline. The first five modes and modes of the pipeline are obtained by the analysis of the modes and modes of the pipeline by the ANSYS software. The mathematical expression of vibration mode is derived. The expression is introduced into the string vibration equation and the pressure vibration is calculated by using Matlab software. The results obtained are approximately the same as those obtained in other papers. The feasibility of this method is proved theoretically. This method can measure the pressure vibration of pipeline from outside. And can compare the pressure vibration around the pipeline to determine the location of the vibration to facilitate the control of pipeline vibration. The pipeline problems should be combined with the existing methods for comprehensive treatment. In order to solve the problem of pipe noise, the research should focus on the flow rate of sewage, which can be adjusted automatically according to the amount of water consumed by the residents, and the structure is simple and safe, only in this way can the noise problem of the pipeline be solved fundamentally.
【學(xué)位授予單位】：沈陽工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TU821;TB535

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