南京地铁集庆门大街站接触网电分段方案比选

分析了南京地铁二号线一期工程集庆门大街站线路的特点,确定了集庆门大街站电分段设计的原则,继而对集庆门大街站可行的3个电分段方案进行了比选,并确定了最终方案.     

建筑及装饰在桥梁设计中的应用——谈楚河汉街桥梁设计

介绍了武汉楚河汉街四座桥梁的设计,结合规划,周边环境进行了方案构思,从建筑美学、桥梁结构设计及桥梁装饰等方面阐述了桥梁的设计要点,论证了建筑学、桥梁工程及结构工程等多专业合作在景观桥梁设计上的重要性。     

The relationship between urban street networks and private motorized trips at the city level

There are factors that impact car usage in urban areas, such as density, diversity and design, but there have been few studies that examine the relationship between street network factors and car usage at the city level (macro level). This paper focuses on this relationship by introducing urban street network variables, such as blocks per area, nodes per block and length of roads and motorways, as independent variables and the percentage of daily trips by private motorized modes as the dependent variable. The street network in this study includes interconnecting lines and points that present streets, roads, motorways, intersections and blocks. The strength of the relationship in this study is found using multiple linear regression. The findings of this research indicate that an increase in car usage is correlated with an increasing number of blocks per area, number of nodes per block and length of motorways. In addition, because the urban street network is the result of macro-scale planning decisions, considering this relationship can lead to better planning decisions.     

对铁岭市银州路和广裕街交叉口改建工程的评价

重点从平面交叉口工程设计、交通安全设施、壮观和谐等三个方面对铁岭市银州路和广裕街平面交叉口工程进行评价。     

从中关村交通,看城市规划的发展方向

交通拥堵已成为城市发展的一个瓶颈,在探讨如何解决交通问题时,我们不得不审视城市整体规划的理论、理念和手段。而确定规划重要参数的依据更显得格外重要。本文力求从交通源的产生-城市空间开发总量-土地承载能力-各种资源、城市各功能要素等研究主线,提出建立城市空间发展巨系统(计算模型),并动态进行跟踪、监测和调整,从而确立城市规划向着更加科学、更加先进方向迈进。     

上海市嘉定区真新街道水系存在问题的思索

本文论述了上海市嘉定区真新街道水系存在的问题及其成因,并根据其存在的问题提出了非工程措 施及工程措施,通过综合治理与长效管理相结合来彻底改变目前的面貌。     

平安大街改扩建工程设计

本文概述了平安大街改扩建工程改建前的现状 ,阐述了平安大街的文化内涵和建设功能 ,综述了该工程的道路设计、地下管网设计、沿街建设及街景整治工程。     

Influence of avenue trees on traffic pollutant dispersion in asymmetric street canyons: Numerical modeling with empirical analysis

The dispersion of traffic-related pollutants in urban street canyons is of importance for the health and quality of lives. To reveal the inherent principle, researchers have performed a lot of investigations; many dispersion phenomena have also been assessed during recent years. However, the presence of avenue trees in street canyons and their capacity for pollutant dispersion remains partly addressed. In this study, we investigated the effects of avenue trees in urban street canyons on traffic pollutant dispersion. The dispersion of CO concentration in asymmetric street canyons was simulated under varied situations. The computational results showed a good agreement with the experimental data, and the numerical model was validated to be adequate for investigating the pollutant dispersion in street canyons. Then, the numerical simulations were extended to explore the impacts of the effects of avenue trees on CO dispersion; the results indicated that avenue trees generally increase CO concentrations in asymmetric street canyons. When the wind direction is perpendicular to the street axis, a terraced building raises pollutant concentrations at the windward wall and reduces concentration at the leeward wall on the pedestrian levels. Findings of this study are expected to provide significant insight into urban road design and strategy making for avenue tree planting, particularly under the existing worldwide sustainable low-carbon urban development.     

Effects of built environment on walking at the neighbourhood scale. A new role for street networks by modelling their configurational accessibility?

The hypothesis of this paper is that some features of the built environment, particularly those concerned with the accessibility of the street network, could be associated with the proportion of pedestrians on all trips (modal split) found in different parts of a city. Quantitative analysis (bi-variate correlation and a multiple regression model) was used to establish the association between variables. The study area covered a substantial part of the metropolitan area in Madrid, Spain. Results showed a consistent influence of five particular indexes in the multi-variate model. Not surprisingly for this kind of research, four of them described density and mix of land uses. But perhaps more interestingly, the first one was a measure of the accessibility of the public space network, a less prominent variable in literature to date. This variable is called herein configurational accessibility, calculated using Space Syntax, an urban morphology theory. The relevance of configurational accessibility is probably related to its surprising ability to synthesize global and perceived properties of street networks at the same time. The findings introduce the idea that the configuration of the urban grid can influence the proportion of pedestrians (as a part of total trips in any transport mode) who choose to walk on single-journey trips. The discussion links with the current debate about walkability indexes and the need of empirical support for the chosen variables and also with transport planning. Because the relevance of the street network’s role is not so easy to grasp, inputs from configurational theory and the pedestrian potential underlying this fact are also discussed at the end of the paper.     

伦敦肯特镇中心大街交通可达性研究——现状街道情况分析及改进措施实例

提高街道的交通可达性对于所有的街道使用者,尤其是包括老年人及残疾人的弱势群体都具有重要意义,也是一个社会精神文明的标志与人文关怀的体现.本文通过对英国伦敦肯特镇中心大街的实地调查与分析,设计提高街道可达性的改善措施,并提出了具有针对性的切实可行的解决方案,这些细节的设计对中国街道可达性建设具有很好的启示作用.