【摘要】：現(xiàn)代城市建筑中諸多因功能需求或追求使用環(huán)境優(yōu)越,愈來愈多地配置了不同種類的動(dòng)力機(jī)器與設(shè)備,諸如風(fēng)機(jī)、空調(diào)、水泵、配電設(shè)施等。這些設(shè)施大多具有集中或離散頻率激振源特點(diǎn),運(yùn)行時(shí)不僅本身產(chǎn)生環(huán)境振動(dòng)和噪聲,同時(shí)會(huì)通過傳播造成一定相鄰區(qū)域范圍內(nèi)建筑結(jié)構(gòu)的環(huán)境振動(dòng),甚至產(chǎn)生二次結(jié)構(gòu)聲輻射現(xiàn)象。目前,這類環(huán)境振動(dòng)和噪聲的治理研究與技術(shù)應(yīng)用已得到普遍關(guān)注和重視。本文的主要工作內(nèi)容如下:(1)對(duì)建筑內(nèi)的一類集中或離散頻振源進(jìn)行了測試分析的基礎(chǔ)上,通過得到的頻譜圖,分析它們的典型振動(dòng)頻率,總結(jié)它們的頻譜圖規(guī)律。同時(shí),在對(duì)振動(dòng)機(jī)理進(jìn)行研究的基礎(chǔ)上,研究它們的振動(dòng)噪聲傳播規(guī)律。(2)對(duì)不同邊界條件下的板進(jìn)行振動(dòng)特性分析,針對(duì)四邊簡支和四邊固支兩種情況,分別采用不同的方法來進(jìn)行聲輻射特性研究,對(duì)于四邊簡支板,由于板的振動(dòng)響應(yīng)有精確的解析解,所以擬采用MATLAB編程的方法直接根據(jù)輻射聲功率公式進(jìn)行求解,對(duì)于四邊固支的情況,則采用先在ANSYS里面計(jì)算振動(dòng)響應(yīng)之后,再利用聲學(xué)計(jì)算軟件VL Acoustic進(jìn)行聲輻射的計(jì)算,并研究了板的不同結(jié)構(gòu)參數(shù)對(duì)聲輻射的影響。(3)通過對(duì)單雙層隔振系統(tǒng)的理論分析之后,選擇運(yùn)用隔振效果更好的雙層隔振的方式來治理振動(dòng)噪聲,建立了雙層隔振的簡化模型,討論了雙層隔振系統(tǒng)力傳遞率的幾個(gè)影響因素,同時(shí),基于MATLAB GUI可視化編程,建立了方便觀察雙層隔振隔振效果的窗口。通過一款雙層隔振裝置的設(shè)計(jì),實(shí)驗(yàn)驗(yàn)證其隔振效果在理想范圍內(nèi);對(duì)一款適用性更廣的中間質(zhì)量為混凝土平臺(tái)的雙層隔振系統(tǒng)進(jìn)行仿真模擬計(jì)算,結(jié)果表明,通過雙層隔振之后,板的輻射聲功率有明顯的降低。
[Abstract]:Many modern urban buildings are equipped with different kinds of power machines and equipments, such as fans, air conditioners, water pumps, distribution facilities and so on. Most of these facilities have the characteristics of concentrated or discrete frequency excitation sources. When running, they not only produce environmental vibration and noise, but also cause environmental vibration of building structures in a certain adjacent area through propagation. It even produces the phenomenon of secondary structure sound radiation. At present, the research and application of this kind of environmental vibration and noise treatment have been paid more and more attention. The main work of this paper is as follows: (1) on the basis of testing and analyzing a class of concentrated or discrete frequency vibration sources in buildings, the typical vibration frequencies are analyzed and their laws are summarized. At the same time, based on the study of vibration mechanism, the propagation law of vibration and noise is studied. (2) the vibration characteristics of plates under different boundary conditions are analyzed. Different methods are used to study the acoustic radiation characteristics. For the simply supported plates with four sides, because of the exact analytical solution of the vibration response of the plates, the method of MATLAB programming is proposed to solve the problem directly according to the formula of radiated acoustic power. In the case of quadripartite clamping, the acoustic radiation is calculated by using the acoustic calculation software VL Acoustic after the vibration response is calculated in the ANSYS. The effects of different structural parameters of plate on acoustic radiation are studied. (3) after theoretical analysis of single and double layer vibration isolation system, the vibration noise is treated by using double layer vibration isolation method with better vibration isolation effect. A simplified model of double-layer vibration isolation is established, and several factors influencing the force transfer rate of double-layer vibration isolation system are discussed. At the same time, based on the visual programming of MATLAB GUI, a window is established to observe the effect of double-layer vibration isolation. Through the design of a double-layer vibration isolation device, the experimental results show that the vibration isolation effect is in the ideal range. The simulation and calculation of a two-layer vibration isolation system with a more widely used intermediate mass of concrete platform shows that the radiated sound power of the plate decreases obviously after the double-layer vibration isolation.
【學(xué)位授予單位】：西南交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TB535.1

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 杜永峰;祝青鑫;朱前坤;李萬潤;;基于實(shí)測數(shù)據(jù)的水泵誘導(dǎo)噪聲及結(jié)構(gòu)振動(dòng)分析[J];特種結(jié)構(gòu);2016年04期

2 滕曉華;姚永新;段答;羅嫩苗;劉波;彭立輝;盧明;;低頻強(qiáng)噪聲對(duì)人體主要器官功能的影響[J];華南國防醫(yī)學(xué)雜志;2015年09期

3 孫偉;;低頻噪聲污染的環(huán)境監(jiān)測[J];污染防治技術(shù);2015年04期

4 李翠;;對(duì)暖通空調(diào)系統(tǒng)降噪問題的探討[J];科技風(fēng);2014年12期

5 房進(jìn)勝;;中央空調(diào)系統(tǒng)噪聲控制方法探討[J];中小企業(yè)管理與科技(上旬刊);2012年05期

6 王春玲;季澤華;;一種可適用于正交異性矩形薄板彎曲穩(wěn)定振動(dòng)的雙重正弦傅立葉級(jí)數(shù)通解[J];應(yīng)用力學(xué)學(xué)報(bào);2010年03期

7 霍維寧;;淺談水泵房噪聲治理[J];科技情報(bào)開發(fā)與經(jīng)濟(jì);2010年21期

8 杜力;趙鵬云;;中央空調(diào)噪聲分析及控制研究[J];重慶工商大學(xué)學(xué)報(bào)(自然科學(xué)版);2009年03期

9 趙兵;梁前超;任凱;李喜才;;船用主機(jī)單層橡膠隔振裝置隔振性能研究[J];中國修船;2008年S1期

10 周賢土;;中小型變壓器噪聲(下)[J];變壓器;2006年12期

相關(guān)會(huì)議論文 前2條

1 張磊;高正陽;;頻譜分析方法在機(jī)組振動(dòng)分析中的應(yīng)用實(shí)例[A];風(fēng)能產(chǎn)業(yè)（2016年第6期 總第83期）[C];2016年

2 趙增欽;郭紅彩;;低頻噪聲危害與人體健康——低頻噪聲對(duì)城市住宅小區(qū)的影響[A];第七屆環(huán)境與發(fā)展論壇論文集[C];2011年

相關(guān)博士學(xué)位論文 前1條

1 王海英;夾層結(jié)構(gòu)振動(dòng)聲輻射特性研究[D];大連理工大學(xué);2009年

相關(guān)碩士學(xué)位論文 前5條

1 閆兆敏;加筋板結(jié)構(gòu)聲輻射特性研究及主動(dòng)控制初探[D];國防科學(xué)技術(shù)大學(xué);2013年

2 孫春平;室內(nèi)配電房及變壓器結(jié)構(gòu)傳聲治理研究[D];西南交通大學(xué);2013年

3 洪陳玉;小區(qū)變壓器環(huán)境振動(dòng)傳播與隔振研究[D];西南交通大學(xué);2012年

4 汪海濤;小區(qū)干式變壓器振動(dòng)特性及整體隔振研究[D];西南交通大學(xué);2012年

5 過春燕;住宅小區(qū)內(nèi)部典型固定噪聲源聲學(xué)特性及管理規(guī)范研究[D];浙江大學(xué);2004年

，

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