【摘要】：在冬季，下雪或結(jié)冰引發(fā)交通事故，對(duì)交通造成影響，給人民生活和國(guó)民經(jīng)濟(jì)造成損失。目前廣泛使用的融雪劑化雪方法不僅對(duì)路面及設(shè)施造成損害，而且破壞環(huán)境。因此，迫切需要尋求一種新型的融雪化冰方法。 通過(guò)對(duì)國(guó)內(nèi)目前采用的融雪化冰方法的對(duì)比分析，提出了電磁能融雪化冰系統(tǒng)的設(shè)計(jì)理念，，并通過(guò)實(shí)驗(yàn)研究、有限元數(shù)值分析確定出用于電磁能融雪化冰系統(tǒng)的材料及形式，進(jìn)而對(duì)道路表面及結(jié)構(gòu)層內(nèi)的溫度分布、升溫規(guī)律進(jìn)行實(shí)驗(yàn)測(cè)量和數(shù)值模擬分析，對(duì)該方法在我國(guó)北方地區(qū)的可行性進(jìn)行探討。在此基礎(chǔ)上，提出了系統(tǒng)的初步控制方案，并對(duì)采用融雪化冰系統(tǒng)的社會(huì)經(jīng)濟(jì)效益進(jìn)行了初步探討。本文主要從以下幾個(gè)方面進(jìn)行了研究： （1）對(duì)熱傳導(dǎo)理論進(jìn)行了分析，分析了熱能在水泥混凝土中的傳導(dǎo)形式； （2）對(duì)國(guó)內(nèi)外目前采用的融雪化冰方法對(duì)比分析，提出了電磁能融雪化冰系統(tǒng)的設(shè)計(jì)理念，并通過(guò)對(duì)材料的廣泛選擇，確定了用于電磁能融雪化冰系統(tǒng)的材料型號(hào)；并通過(guò)對(duì)材料在不同溫度情況下的形態(tài)及性能分析，確定出電磁能融雪化冰系統(tǒng)運(yùn)行時(shí)的最高溫度限制。 （3）利用傳熱學(xué)理論，建立電磁能融雪化冰系統(tǒng)傳熱的數(shù)學(xué)模型，利用有限元軟件ANSYS分析融雪化冰系統(tǒng)的傳熱規(guī)律，據(jù)此確定出電磁能融雪化冰系統(tǒng)的設(shè)置的最大間距。 （4）建立了一個(gè)小型道路融雪實(shí)驗(yàn)系統(tǒng)，通過(guò)不同部位溫度變化情況分析了熱量在混凝土中的傳導(dǎo)規(guī)律，并在此基礎(chǔ)上，對(duì)結(jié)構(gòu)層內(nèi)溫度場(chǎng)、上表面溫度分布和升溫規(guī)律、預(yù)熱時(shí)間融雪效果進(jìn)行了理論研究。
[Abstract]:In winter, snow or ice causes traffic accidents, which affect traffic and cause losses to people's lives and national economy. The widely used snow melting method not only damages the road surface and facilities, but also damages the environment. Therefore, there is an urgent need to find a new method of melting snow and ice. Based on the comparison and analysis of the current methods of melting snow and ice in China, the design concept of electromagnetic energy melting ice system is put forward, and the materials and forms used in the system are determined by experimental research and finite element numerical analysis. Furthermore, the temperature distribution and heating law of road surface and structure layer are measured and analyzed by numerical simulation, and the feasibility of this method in northern China is discussed. On the basis of this, the preliminary control scheme of the system is put forward, and the social and economic benefits of the snow melting and ice melting system are discussed. In this paper, the following aspects are studied: (1) the heat conduction theory is analyzed, and the conduction form of heat energy in cement concrete is analyzed; (2) by comparing and analyzing the methods of melting snow and ice at home and abroad, the design concept of electromagnetic energy snow melting ice system is put forward, and the type of material used in electromagnetic energy snow melting ice melting system is determined through the wide selection of materials; Through the analysis of the morphology and performance of the material at different temperatures, the maximum temperature limit of the electromagnetic energy melting ice system is determined. (3) based on the theory of heat transfer, the mathematical model of the heat transfer of the electromagnetic energy melting ice system is established, and the heat transfer law of the melting snow ice system is analyzed by using the finite element software ANSYS. According to this, the maximum spacing of the electromagnetic energy melting ice system is determined. (4) A small-scale road snow melting experiment system is set up, and the law of heat conduction in concrete is analyzed through the change of temperature in different parts. On the basis of this, the temperature field in the structure layer, the temperature distribution on the upper surface and the law of heating up are analyzed. The effect of snow melting during preheating time is studied theoretically.
【學(xué)位授予單位】：長(zhǎng)安大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：U418.41

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