【摘要】：隨著城市化水平的提升,大規(guī)模的城市建設(shè)導(dǎo)致城市下墊面發(fā)生改變,城市熱環(huán)境不斷惡化。而城市街峽作為城市下墊面的基本構(gòu)成單元和居民戶(hù)外活動(dòng)的主要場(chǎng)所,它的熱環(huán)境狀況與城市熱環(huán)境狀況及居民生活質(zhì)量息息相關(guān)。因此,如何在滿(mǎn)足城市中心區(qū)緊湊發(fā)展的需求下,科學(xué)合理的進(jìn)行城市街峽設(shè)計(jì),是現(xiàn)階段城市規(guī)劃和建筑設(shè)計(jì)中面臨的重大挑戰(zhàn)。近年來(lái),國(guó)內(nèi)出現(xiàn)了大量有關(guān)城市熱環(huán)境的研究,雖然有部分關(guān)于城市街峽熱環(huán)境的研究,但是針對(duì)干熱地區(qū)的研究較多,針對(duì)濕熱地區(qū)的研究較少。并且,即使有學(xué)者以指導(dǎo)城市設(shè)計(jì)為出發(fā)點(diǎn)對(duì)城市街峽熱環(huán)境展開(kāi)研究,并提出了一些改善建議,但這些改善建議大多為定性描述,并未給出定量答案,這樣的研究結(jié)論較難應(yīng)用于實(shí)際設(shè)計(jì)中。針對(duì)上述不足,本文以深圳典型城市街峽熱環(huán)境為研究對(duì)象,以能為城市熱環(huán)境提供有益參考為研究目的,基于數(shù)值模擬的方法展開(kāi)了以下研究。在此目的下,總結(jié)了城市街峽熱環(huán)境的相關(guān)理論和研究方法,初步分析了城市街峽熱環(huán)境的影響因素和影響機(jī)制。并依據(jù)熱環(huán)境的影響機(jī)制,選擇對(duì)城市街峽熱環(huán)境影響較為明顯的城市街峽設(shè)計(jì)因素對(duì)深圳市的城市街峽進(jìn)行分類(lèi),從城市街峽平面特征、剖面特征以及下墊面特征三個(gè)方面歸納出深圳市的典型街峽類(lèi)型。然后,依據(jù)城市街峽特征明顯和類(lèi)型豐富的原則選擇了西麗366大街片區(qū)內(nèi)的三條典型街峽進(jìn)行實(shí)例研究,通過(guò)實(shí)地調(diào)研和數(shù)值模擬的方法對(duì)片區(qū)內(nèi)三條典型街峽進(jìn)行熱環(huán)境模擬分析,并依據(jù)熱環(huán)境的主要參數(shù)和標(biāo)準(zhǔn)有效溫度SET對(duì)片區(qū)內(nèi)的典型街峽熱環(huán)境進(jìn)行評(píng)價(jià)分析,總結(jié)了街峽熱環(huán)境的變化規(guī)律,比較了不同因素對(duì)街峽熱環(huán)境的影響程度。最后,在實(shí)例研究的基礎(chǔ)上,設(shè)計(jì)多組工況對(duì)深圳典型城市街峽進(jìn)行模擬分析。具體量化城市街峽的走向、幾何特征和下墊面特性對(duì)城市街峽熱環(huán)境的影響。并依據(jù)數(shù)值模擬的結(jié)果總結(jié)出深圳典型城市街峽的熱環(huán)境特征,分析不同城市街峽類(lèi)型對(duì)人體熱舒適的影響,進(jìn)而對(duì)深圳市的城市街峽提出一定的優(yōu)化建議。
[Abstract]:With the improvement of urbanization level, large-scale urban construction leads to the change of the underlying surface of the city, and the urban thermal environment is getting worse and worse. The urban street gorge, as the basic unit of the underlying surface of the city and the main place of the residents' outdoor activities, its thermal environment is closely related to the urban thermal environment and the quality of life of the residents. Therefore, how to design the urban street gorge scientifically and rationally under the demand of the compact development of the city center is a major challenge in the urban planning and architectural design at the present stage. In recent years, there have been a lot of studies on urban thermal environment in China. Although there are some studies on urban street fjord thermal environment, there are more studies on dry-hot areas and less research on damp-hot areas. Moreover, even if some scholars start from guiding urban design and put forward some suggestions to improve the urban street fjord environment, most of these suggestions are qualitative description and do not give a quantitative answer. This kind of research conclusion is difficult to apply to the actual design. In view of the above shortcomings, this paper takes the hot environment of street in typical city of Shenzhen as the research object, in order to provide the beneficial reference for the urban thermal environment as the research purpose, and carries out the following research based on the numerical simulation method. For this purpose, the related theories and research methods of urban street fjord heat environment are summarized, and the influencing factors and mechanism of urban street isthmus heat environment are preliminarily analyzed. According to the influence mechanism of thermal environment, the urban street isthmus design factor which has obvious influence on the urban street isthmus environment is selected to classify the urban street isthmus in Shenzhen, from the characteristics of the urban street isthmus plane. The typical street gorge types in Shenzhen are summarized from three aspects: profile characteristics and underlying surface characteristics. Then, according to the principle of obvious characteristics and rich types of urban street gorge, this paper chooses three typical street gorges in Xili 366th Street area to carry on the case study. By means of field investigation and numerical simulation, the thermal environment of three typical street gorges in the area is simulated and analyzed. According to the main parameters of the thermal environment and the standard effective temperature (SET), the thermal environment of the typical street gorge in the area is evaluated and analyzed. The change rule of street fjord heat environment is summarized, and the influence degree of different factors on street isthmus heat environment is compared. Finally, on the basis of case study, the simulation analysis of typical city street gorge in Shenzhen is carried out by designing several groups of working conditions. The influence of the trend, geometric characteristics and underlying surface characteristics of urban street isthmus on the thermal environment of urban street isthmus is quantified in detail. Based on the results of numerical simulation, the thermal environment characteristics of typical urban street gorges in Shenzhen are summarized, and the effects of different types of urban street gorges on human thermal comfort are analyzed. Finally, some optimization suggestions for the urban street gorges in Shenzhen are put forward.
【學(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類(lèi)號(hào)】：TU984;TU119

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