城市肌理形態(tài)與粗糙度關(guān)聯(lián)性研究
發(fā)布時(shí)間：2018-10-10 19:28
【摘要】：由于城市形態(tài)的不斷改變,由此而帶來的微氣候問題層出不窮,其中空氣污染正是大眾關(guān)注的焦點(diǎn)之一。就建筑學(xué)而言,研究空氣污染擴(kuò)散問題的關(guān)鍵對(duì)象是城市冠層內(nèi)部空間幾何邊界的變化規(guī)律及其對(duì)空氣運(yùn)動(dòng)的影響�？諝膺\(yùn)動(dòng)在建筑物之間的作用力關(guān)系,可以通過空氣動(dòng)力學(xué)粗糙度來表征。粗糙度值越高表明空氣運(yùn)動(dòng)在建筑物之間產(chǎn)生的湍流強(qiáng)度越大,意味著城市冠層內(nèi)污染物的擴(kuò)散能力越強(qiáng)。在此基礎(chǔ)上,本文以南京城市肌理切片為基本單元,使用計(jì)算機(jī)工具分析研究城市肌理形態(tài)對(duì)粗糙度的影響,研究結(jié)論以優(yōu)化城市微環(huán)境為目標(biāo),為相關(guān)研究和設(shè)計(jì)提可供可量化的城市形態(tài)控制指標(biāo)作為參考。本文的研究內(nèi)容分為六個(gè)章節(jié)：首先簡(jiǎn)述研究背景和研究內(nèi)容,明確研究對(duì)象和目的——城市粗糙度與城市肌理形態(tài)的關(guān)系,并對(duì)相關(guān)概念進(jìn)行界定,確定本文的研究方法；第二章從粗糙度的研究意義、粗糙度的計(jì)算方法及粗糙度和城市形態(tài)的相關(guān)研究三個(gè)方面闡述研究的現(xiàn)狀及進(jìn)展；第三章介紹基于Rhino-Grasshopper平臺(tái)的粗糙度形態(tài)學(xué)計(jì)算方法,并與其他實(shí)驗(yàn)平臺(tái)比較計(jì)算結(jié)果驗(yàn)證其準(zhǔn)確性；在尊重原公式適用條件的前提下,第四章從建筑高度和建筑基底面積兩方面篩選出建筑體型變化較小的城市肌理,作為“有效切片”用于后文的計(jì)算；第五章中明確了以建筑高度、建筑密度和容積率作為形態(tài)參數(shù)用于表述城市肌理的體量,以迎風(fēng)面密度、建筑體型系數(shù)和建筑分散度作為形態(tài)參數(shù)用于表述城市肌理的幾何結(jié)構(gòu),在前文“有效切片”的基礎(chǔ)上,從研究范圍內(nèi)提取相關(guān)數(shù)據(jù)用圖示法分析六個(gè)形態(tài)參數(shù)的分布狀況,并討論數(shù)據(jù)變化的原因,比對(duì)總結(jié)城市肌理形態(tài)參數(shù)與粗糙度的變化規(guī)律；最后對(duì)本研究進(jìn)行回顧,提出研究過程中的不足,并對(duì)后期研究進(jìn)行展望。
[Abstract]:Due to the continuous change of urban morphology, microclimate problems emerge in endlessly, among which air pollution is one of the focuses of public concern. As far as architecture is concerned, the key object to study the diffusion of air pollution is the changing law of geometric boundary in urban canopy and its influence on air movement. The force relation of air motion between buildings can be characterized by aerodynamic roughness. The higher the roughness value is, the greater the turbulent intensity of air movement between buildings is, which means that the diffusion ability of pollutants in the urban canopy is stronger. On this basis, taking Nanjing urban texture slice as the basic unit, this paper uses computer tools to analyze and study the effect of urban texture morphology on roughness, and the research conclusion is to optimize the urban microenvironment. For the relevant research and design to provide quantifiable urban shape control index as a reference. The research content of this paper is divided into six chapters: firstly, the research background and research content are briefly introduced, and the relationship between urban roughness and urban texture morphology is clarified, and the relevant concepts are defined and the research methods are determined. The second chapter describes the research status and progress from three aspects: the significance of roughness, the calculation method of roughness and the research of roughness and urban morphology. Chapter 3 introduces the morphological calculation method of roughness based on Rhino-Grasshopper platform. The results are compared with other experimental platforms to verify its accuracy. On the premise of respecting the applicable conditions of the original formula, the fourth chapter selects the urban texture with little change in building shape from two aspects of building height and building base area. In Chapter 5, the height, density and volume ratio of buildings are used as morphological parameters to describe the body weight of urban texture, which is used to describe the upwind density. Building shape coefficient and building dispersion are used as morphological parameters to express the geometric structure of urban texture. On the basis of "effective section", the distribution of six morphological parameters is analyzed by using the graphic method to extract the relevant data from the scope of the study. The reason of data change is discussed, and the variation law of urban texture parameters and roughness is compared and summarized. Finally, the paper reviews the research, points out the deficiency in the research process, and looks forward to the later study.
【學(xué)位授予單位】：南京大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：TU984
本文編號(hào)：2262979
[Abstract]:Due to the continuous change of urban morphology, microclimate problems emerge in endlessly, among which air pollution is one of the focuses of public concern. As far as architecture is concerned, the key object to study the diffusion of air pollution is the changing law of geometric boundary in urban canopy and its influence on air movement. The force relation of air motion between buildings can be characterized by aerodynamic roughness. The higher the roughness value is, the greater the turbulent intensity of air movement between buildings is, which means that the diffusion ability of pollutants in the urban canopy is stronger. On this basis, taking Nanjing urban texture slice as the basic unit, this paper uses computer tools to analyze and study the effect of urban texture morphology on roughness, and the research conclusion is to optimize the urban microenvironment. For the relevant research and design to provide quantifiable urban shape control index as a reference. The research content of this paper is divided into six chapters: firstly, the research background and research content are briefly introduced, and the relationship between urban roughness and urban texture morphology is clarified, and the relevant concepts are defined and the research methods are determined. The second chapter describes the research status and progress from three aspects: the significance of roughness, the calculation method of roughness and the research of roughness and urban morphology. Chapter 3 introduces the morphological calculation method of roughness based on Rhino-Grasshopper platform. The results are compared with other experimental platforms to verify its accuracy. On the premise of respecting the applicable conditions of the original formula, the fourth chapter selects the urban texture with little change in building shape from two aspects of building height and building base area. In Chapter 5, the height, density and volume ratio of buildings are used as morphological parameters to describe the body weight of urban texture, which is used to describe the upwind density. Building shape coefficient and building dispersion are used as morphological parameters to express the geometric structure of urban texture. On the basis of "effective section", the distribution of six morphological parameters is analyzed by using the graphic method to extract the relevant data from the scope of the study. The reason of data change is discussed, and the variation law of urban texture parameters and roughness is compared and summarized. Finally, the paper reviews the research, points out the deficiency in the research process, and looks forward to the later study.
【學(xué)位授予單位】：南京大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：TU984
【參考文獻(xiàn)】
相關(guān)期刊論文 前2條
1 丁沃沃;胡友培;竇平平;;城市形態(tài)與城市微氣候的關(guān)聯(lián)性研究[J];建筑學(xué)報(bào);2012年07期
2 曹文俊;粗糙度長度綜述[J];氣象;1991年04期
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