Spatial diversion and coordination of flood water for an urban flood control project in Suzhou, China

Suzhou City,located in the Yangtze River Delta in China,is prone to flooding due to a complex combination of natural factors,including its monsoon climate,low elevation,and tidally influenced position,as well as intensive human activities.The Large Encirclement Flood Control Project(LEFCP)was launched to cope with serious floods in the urban area.This project changed the spatiotemporal pattern of flood processes and caused spatial diversion of floods from the urban area to the outskirts of the city.Therefore,this study developed a distributed flood simulation model in order to understand this transition of flood processes.The results revealed that the LEFCP effectively protected the urban areas from floods,but the present scheduling schemes resulted in the spatial diversion of floods to the outskirts of the city.With rainstorm frequencies of 10.0%to 0.5%,the water level differences between two representative water level stations(Miduqiao(MDQ)and Fengqiao(FQ))located inside and outside the LEFCP area,ranged from 0.75 m to 0.24 m and from 1.80 m to 1.58 m,respectively.In addition,the flood safety margin at MDQ and the duration with the water level exceeding the warning water level at FQ ranged from 0.95 m to 0.43 m and from 4 h to 22 h,respectively.Rational scheduling schemes for the hydraulic facilities of the LEFCP in extreme precipitation cases were developed ac-cording to food simulations under seven scheduling scenarios.This helps to regulate the spatial flood diversion caused by the LEFCP during extreme precipitation.

Quality of public space and sustainable development goals:analysis of nine urban projects in Spanish cities

The starting point of this research is the urban model promoted by the United Nations through the Sustainable Development Goals(SDGs).The importance of public spaces is especially highlighted in Goal 11.7:“provide universal access to safe,inclusive,and accessible,green,and public spaces.”The quality of public spaces can be properly assessed by reconsidering the quality indicators and investigating their development potential,which is the main focus of our research.This study is based on a theoretical and methodological reflection on the quality of public space,considering the contributions of some contemporary urban traditions and a few recent experiences.From this perspective,a variety of public space projects developed in the European sphere have been selected and analyzed.The quality parameters identified in this initial analysis were then applied to the analysis of nine representative case studies in three Spanish cities(Madrid,Barcelona,and Zaragoza).The main goal is to propose a methodology that helps to evaluate the quality of those public spaces and determine its relationship with the safety,accessibility,and inclusiveness conditions they offer.

IMPACTS OF SEA LEVEL RISE ON MAJOR PROJECTS AND URBAN DEVELOPMENT IN CHINA'S COASTAL PLAINS

Due to the dual dris oftural and man-made factors, relative sea leverise in China's coastal plains can be 2 to 3 times over the global mean dunng thefirst half of the 21st Century, it will strongly whuence the vanous coastal projectsand installations and the development of coastal dhes and towns. Research resultsshow that a 50-cm-nse in relative sea leve will cause maed decline in the functionof coastal defense and drainage projects and seriously endangur the functionalworking of the vast majority of coastal harbors. Meanwhile, it will also whuence thedevelopment of coastal dhes and towns throwi deterioratin water quality of thesource of urban water supply, increasing urban fiood risk and damagin seasidetounst resources etc.. Tianin, Shanghai and Guangzhou, the three most importancoastal dhes of China, will be Strongly affeded.

The Everyday （in） Urbanism： What＇s New on the Spot

The paper aims at measuring the influence that the everyday theme has exercised in the formation of the idea of space that is permeating the thought of many contemporary urban planners. Through the investigation of two recent approaches, the Italian and the American ones, the complex relationships between daily practices and urban spaces, in the continuous redefinition of the concepts of public and private sphere, are described. In this context, the Everyday Urbanists＇ work had the merit to reveal and investigate the social possibilities offered by the patterns of everyday life. They were among the first to speak about a citizenship redefinition, process which has been increasingly debated by many scholars. Citizenship is thus turning to be less formal, while becoming more substantive and insurgent. The paper demonstrates that, according to this crucial change, new and meaningful relations between citizenship and planning can be established and that these are able to open planning practice up to the present ethnographical possibilities of the urban space, and to its tactical and polysemic dimensions.

Urban Redevelopment, Gentrification and Gentrifiers in Post-reform Inland China: A Case Study of Chengdu, China

Since its process evolved in recent years, the definition of gentrification has expanded to cover different forms of social upgrading, new spaces and new actors around the world. Studies on gentrification in Chinese cities began to take off in the 2000 s. However, they all mainly focused on the newly emerging global cities and there has been a lack of investigation on provincial cities. Furthermore, discussions on gentrifiers′ profiles and their motivations for housing choice are absent from literature on Chinese gentrification. Therefore, this paper aims to assess the relevance of the broad definition of gentrification in provincial Chinese cities through empirical research on urban redevelopment projects in Chengdu, and to examine the characteristics of gentrifiers(as new incoming residents) in it. The results show the rationality of gentrification processes as urban redevelopment in Chengdu, and reveal original outcomes on the corresponding gentrifiers′ profiles and the motivations behind their housing choice, which are different from the general features of gentrifiers in standard Western gentrification research.

构建“安全韧性城市”:概念、理论与实施路径

韧性城市的理念在国内外受到广泛的关注,并处于不断发展深化的过程中。在梳理安全学科中韧性和韧性城市的代表性理论观点、指标体系和实践案例的基础上,提出构建安全韧性城市的概念与理论分析模型,并在参考已有典型案例基础上提出具体的实施路径,以便为构建安全韧性城市提供理论基础与实践指导。

诉求统筹下城中村改造利益相关者协同治理——以天津市北辰区改造项目为例

利益相关者协同治理是推动城中村改造项目顺利高效实施的关键,但改造实践中各阶段利益相关者关系及利益诉求错综复杂。以天津市北辰区改造项目为例,采用社会网络分析方法,系统、全面地分析项目各阶段利益相关者关系及其诉求的网络特征、演化规律。结果表明,拆迁安置补偿阶段利益相关者利益诉求协调难度最高;同一利益主体在项目不同阶段的角色功能差异明显;建设公众满意的生活环境是多元利益相关者的核心利益诉求。采用社会网络分析方法,剖析利益相关者关系及诉求协调的重点问题,为城中村改造利益相关者协同治理提供科学参考与依据。

The Pedagogic Capacity of Architecture the Macro Project University Citadel—University of Atlántico Barranquilla—Colombia

Urban agenda nowadays puts pedestrians as the axis of urban design, and pedestrians are the most important thing in the city. The architect takes that idea and applies it in the project, and he focuses on prioritizing the pedestrian over the cars. Public spaces filled with green zones are a main element, water treatment is a design determinant, buildings use natural illumination as much as possible and culture and arts are reinforced through new scenarios.

Degradation of Urban Green Spaces in Lagos, Nigeria: Evidence from Satellite and Demographic Data

The study aimed to assess the potential of using Remote Sensing (RS) da-ta to evaluate the changes of urban green spaces in Lagos, Nigeria. Land-sat Thematic Mapper and Landsat 8 (Operational Land Imager) data pair of May 4, 1986, December 12, 2002 and January 1, 2019 covering Lagos Government Authority (LGA) were used for this study. Supervised image classification technique using Maximum Likelihood Classifier (MLC) was used to create base map which was then used for ground truthing. Ran-dom Forest (RF) classification technique using RF classifier was utilized in this study to generate the final land use land cover map. RF is an en-semble learning method for classification that operates by constructing a multitude of decision trees at training time and outputting the class that is the mode of the classes (classification). Lagos census population data was also used in this study to model population projection. Extrapolation of the model was used to predict data for the years, 2020 and 2040. Re-sults of the study revealed a reduction of urban green spaces due to agri-culture and settlement. While the remote mapping revealed the gradual dispersion of ecosystem degradation indicators spread across the state, there exists clusters of areas vulnerable to environmental hazards across Lagos. To mitigate these risks, the paper offered recommendations rang-ing from the need for effective policy to green planning education for city managers, developers and risk assessment. These measures will go a long way in helping sustainability and management of land resources in Lagos.

城市更新投资项目经济评估问题

当前,城市更新作为我国城市空间发展的一项战略,已在全国各地实施。城市更新规划实施是以投资项目的形式落地的。但从规划到项目的过程中有一个非常重要的环节—投资项目经济评估—却没有得到应有的重视,甚至在决策流程中被完全忽略,很有可能导致经济低效或无效项目的实施,浪费国家资源。本文根据我国国情,参照国际经验,提出如何界定城市更新投资项目,探讨城市更新投资项目经济和财务可行性评估的流程和方法。目的是通过构建一个科学严谨的流程,为城市更新项目投资决策提供科学的依据,并合理界定政府与企业在城市更新项目中的作用和责任。

Discussion about the standard system on urban domestic water saving technology in China

Standard is the technical foundation of national economic and social development, and it is the basic rule of establishing social regulation. Researching and constituting the standard system of urban domestic water saving technology is to offer important science basis for revising standard plan and standardize research plan. This paper introduces the present situation of our urban domestic water saving technical standard system, problem and the development direction in the future, as well as project planning of constructing urban domestic water saving technical standard system.

城市建筑立体复合形态演变及机制——以巴黎为例

选取3个不同时期具有立体复合特征的巴黎城市项目为样本,呈现了从集权式的大尺度整体建设逐渐转向多元主体掌控的精细化、小颗粒度协作开发的形态演变进程;通过形态与价值观念和政策制度的关联分析,揭示了其内在成因机制;从建筑三维形体、功能立体布局、建筑与城市渗透性、建筑高度、公共空间品质等方面出发,总结了巴黎城市以立体复合利用为特征的精细化管控体系与方法.最后,通过对3个项目的回溯与总结,提出目标、制度、策略的协同共进是实现城市建筑立体复合形态的重要基础,并对我国城市规划设计及管控提出了建立多元主体协商机制、采用三维形态管控方法、构建城市与建筑一体化管控指标、明确总师责权的建议.

城市轨道交通基坑工程变形控制值研究

[目的]设置监测项目的变形控制值,对施工安全进行控制,以确保施工期间结构自身及周边环境稳定性,是城市轨道交通工程施工非常重要的工作内容。采用明挖法时,变形控制值因所处地质条件的不同而表现出较为明显的差异,需进一步明确不同地质条件下基坑的变形控制值。[方法]以北京地铁基坑工程为研究案例,分两个区域(西部、中东部)分别收集、整理了基坑工程的监测数据。选取基坑地面沉降、围护桩顶/墙顶处沉降、围护桩顶/墙顶处水平位移、围护桩体/墙体处水平位移作为监测项目,利用统计分析方法对这四类监测项目的控制值进行深入研究,并研究了变形值与基坑设计深度H的关系,针对两个区域基坑的四类监测项目分别提出了控制建议值。[结果及结论]这四类监测项目的控制建议值为:西部区域基坑建议分别取25~40 mm和0.10%H~0.20%H、15 mm、15 mm、25~40 mm和0.10%H~0.20%H;中东部区域基坑建议分别取30~50 mm和0.15%H~0.30%H、20 mm、20 mm、30~50 mm和0.15%H~0.30%H。

对某城乡供水工程自动化控制的设计和应用研究

城乡供水自动化是解决农村饮水安全的重要措施,能够有效保证供水工程的管理决策能力和应用服务水平。总结了某城乡供水项目中自动化控制的设计和应用,不仅能有效的弥补水利工程建设过程中存在的不足,此外在实现水利工程长远发展、提高水利工程管理水平中也发挥了重要性作用,可以实现城乡供水后期运行中节水、减员、降本、增效的功能优势,推动了城乡供水的均等化服务,有效巩固当地的脱贫攻坚工作。

山地城市轨道交通工程岩溶勘察模式浅析

[目的]在贵阳城市轨道交通工程勘察中,岩溶是具有普遍性的不良地质,是地质上面临的首要问题。当今岩溶问题的勘察模式同贵阳城市轨道建设的需求是不相匹配的,故必须探索一种适用于岩溶山地城市轨道交通建设的岩溶勘察模式。[方法]从岩溶危害出发,总结分析岩溶勘察的技术手段、规范约束和贵阳市的实际经验共三个方面的内容后,明确指出现阶段采用的“工程地质调绘先行,工程钻探为主,工程物探为辅”的岩溶勘察模式是历史所形成的,并论述了当前轨道交通山地岩溶勘察的主要矛盾是对岩溶勘察的高分辨率要求与勘察方法的低分辨率水平之间的矛盾。[结果及结论]从现阶段岩溶勘察的主要矛盾出发,根据岩溶勘察技术手段的发展,结合具体案例分析,经研究提出:“工程地质调绘先行,工程钻探为主,工程物探为辅”的岩溶勘察模式必将走向“从工程需要出发,以地质思维为指导,地质调绘先行,地面物探普查,钻探和钻孔物探为补充和验证,多方法综合”的新勘察模式。

中国海外城市轨道交通市场分布与演化特征研究

随着全球范围内人口的快速增加及城市化进程的加速推进,城市轨道交通产品的海外市场需求不断增长,为我国城市轨道交通产品及相关产业“走出去”提供契机。文章聚焦于“一带一路”倡议提出的10年间(2014年—2023年)我国开工建设的海外城市轨道交通建设项目,通过统计梳理此间我国企业在海外承建的城市轨道交通项目建设里程,并将其与“一带一路”倡议提出前的2007年—2013年间数据进行对比,分析出我国海外城市轨道交通市场分布规律、演化特征及所面临的挑战,然后以此为据,从市场定位与进入、产业链延伸及技术输出3方面提出相应的市场开发策略,以期为我国城市轨道交通企业更好地开拓海外市场提供借鉴和参考。

城市轨道交通建设项目安全风险识别方法的综述研究

城市轨道交通建设项目是城市的生命线,我国城市轨道交通项目安全生产形势严峻,且在短期内仍将持续。安全风险识别是保障安全生产和高质量发展的关键。本文对国内外相关文献进行深入研究,提出了城市轨道交通建设项目安全风险识别方法的四个主要的方向为:专家调查法、个案研究法、事故统计法、自然语言处理方法,并对其研究和应用现状进行了综合评述。同时,提出结合大数据与人工智能算法与自然语言处理技术的将是未来行业垂直领域内安全风险识别的趋势。

城市更新中基础设施化的社会网络建构——中国香港“妙想毡开”西营盘计划

本研究基于城市更新中基础设施化的理论,探讨中国香港特别行政区“妙想毡开”西营盘计划如何通过技术性平台搭建推动社会网络建构的发展脉络与实践路径。文章详细阐述了基础设施化模式在城市更新中的实际应用,聚焦参与式影像技术如何促进社区转型的社会空间机制,着重阐释以影像传声为载体的技术性平台如何建构积极的社会网络,联结政府、NGO组织、居民等多元行动主体。研究发现影像传声技术平台的搭建不仅为城市更新提供了技术支持,还促进了社区信息的共享和公共资源的优化配置。基础设施化的社会网络构建有助于加强社区成员之间的联系,形成共同的价值观念和发展目标,从而推动“以人为本”的城市更新进程。

宜居宜业和美乡村建设的理论逻辑与实践进路———基于浙江“千万工程”的经验与启示

建设宜居宜业和美乡村,是全面推进乡村振兴、加快农业强国建设的前进方向。宜居宜业和美乡村建设具有独特的内涵特征、理论逻辑和实践逻辑,从“宜居”“宜业”和“和美”三个维度进行系统剖析发现,中国在乡村建设、农村产业发展、乡村治理等方面取得显著成效,但农村公共服务短板仍然突出,人居环境质量不高,三产融合程度较低,城乡精神文明建设存在差距,乡村治理效能有待提升。借鉴“千万工程”正确处理绿色发展与协调发展、整治村庄与经营村庄、整体推进与重点突破三大关系的经验,新阶段新征程上推进宜居宜业和美乡村建设,需要秉持绿色发展理念,持续提升农业农村绿色化水平;坚持协调发展理念,统筹推进城乡融合发展。据此,应激发农民内生动力,增强自我发展意愿;充分发挥市场作用,推动有效市场和有为政府相结合;始终坚持问题导向,循序渐进宜居宜业和美乡村建设。