城市化进程中城市社区变迁探究--以深圳为例

随着城市化进程的不断加快,我国城市社区的结构和功能发生着越来越深刻的变化,也带来了众多的社会问题和社会矛盾。本文以我国快速城市化典型代表的深圳市为例,探讨城市社区的发展、变迁和类型的分化,旨在为规划城市社区发展、制定社区政策和探索谋划社区治理新路提供积极的现实指导。     

基于历史数据的南京保障房空间结构演化研究

我国保障房的大规模建设对城市的社会空间结构造成了巨大影响.本文以南京市为例,利用2002年至2012年的保障房建设历史数据分析了近10年保障房建设的空间结构演化,总结了当前保障房住区呈“偏远化、集中化、规模化”的宏观布局特征.南京市自2010年开始建设的大规模集中式保障房社区犹如“造城运动”,在有效解决中低收入群体住房问题的同时,将可能加重城市空间分化和居住分异,进而引发一系列社会问题.对此,在分析保障房住区居民通勤、就业、购物、教育、养老等社会活动的基础上,提出了分散建设、发展多中心模式、大力建设配套设施和构建动态影响监测平台及预警机制等策略,为城市社会空间结构的优化提供了新的视角.     

当代城市人行天桥无障碍设施研究

设计已不再从纯粹的工程学角度而是运用现代城市设计的理念,来研究新市化进程中的人行天桥无障碍设施建设.论文针对天津城市人行天桥无障碍设施建设方面存在的规划布局、设施设计、美观性和设施管理等问题,通过对国内外各大城市人行天桥无障碍设施发展建设的研究,力求探索提出我国当代城市人行天桥无障碍设施建设发展的几点建议.     

基于城乡统筹的早商府城遗址保护规划策略研究

在城乡统筹的社会背景下如何进行遗址保护与利用是一个值得关注和研究的问题.本文在总结早商府城遗址概况、分析遗址本体和周边环境的破坏因素、并对府城遗址进行价值评估的基础上,从城乡统筹发展的角度剖析府城遗址保护面临的矛盾,最后从区域整合协调、分区分级保护、保护性利用和管理保障机制完善四个方面提出了基于城乡统筹的整体保护的规划策略,以期对如何在城乡统筹中府城遗址的保护进行积极的探讨,寻找遗址可持续发展与城乡统筹协调的双赢之路.     

重庆市小城镇风貌特色规划的探讨

加快小城镇建设是统筹城乡发展、积极解决"三农"问题、推动城镇化进程的有效途径。而目前的快速发展中,重庆市小城镇传统的、具有差异性的城镇特色正逐渐缺失。该文通过对重庆市小城镇建设整体定位、风貌特色及规划体系建构的讨论,尝试提出较为系统的、具有可操作性的风貌规划策略,对小城镇建设与管理提供参照。     

后现代主义规划：后现代精神的当代延续——从林少伟的著作《亚洲伦理城市主义——一个激进的后现代视角》谈起

本文首先概述了林少伟教授后现代主义规划理论——亚洲伦理城市主义——的基本内涵,进而对比后现代主义在建筑领域的境遇,分析了后现代主义在当代城市规划领域愈发活跃的原因,文章最后指出了后现代主义规划在现实操作中面临的问题。     

Application and comparison of two different dual drainage models to assess urban flooding

Two types of dual drainage models were set up to assess urban flooding for a study area in Germany: (1) a static model based on a conventional method in Germany; the overflow volumes of the manholes are gained by the sewer solver HYSTEM-EXTRAN. Using these water volumes and geographic information system (GIS) tools, an overland flow network, composed of flow paths and accumulated water in sinks, is produced, (2) a HYSTEM-EXTRAN 2D model; a two-dimensional (2D) overland flow module is coupled bi-directionally with HYSTEM-EXTRAN. The overland flow and the flow in the sewer system are simulated alternately.

Both models were supplied with a synthetic design rainfall and 25 extreme storms. After comparing the models and the results, a practical approach to assess urban flooding is proposed. In this approach the 2D model will compute the depth, extent, and propagation of floods only in the prone areas specified by the static model.     

Exogenous pressures and probabilistic assessment of risk and vulnerability of urban water systems in Ghana

ABSTRACT

Risk and vulnerability assessment of urban water systems can be extended to include several components. This work formulates a probable quantitative assessment of risk and vulnerability of urban water system based on climatic conditions and urban population growth. Climate change scenarios and population projections are used to estimate susceptibility to water supply systems’ risk and vulnerability. Quantile regression was used to establish the exponent correlation between the climate variables and population; and evaluate their consequential influences on urban water supply systems. We complemented the analysis with a probabilistic model to assess the robustness of urban water system that depends wholly on the climate for freshwater source. The study established that Climatic conditions, though uncertain, point to freshwater deficiency in the future. Moreover, population trends project a higher urban population thereby increasingly lowering water per capita and subsequently leading to doubtful urban water system’s resilience to the exogenous pressures.     

Using the bimonthly water balance of a non-fully monitored water distribution network with seasonal water demand peaks to define its actual NRW level: the case of Kos town,Greece

Water losses in pipe networks are usually the biggest ‘water use’ due to the high leakage occurring. The need for conservative water use is today more pressing than ever due to the stressful climate change conditions, forcing water utilities to consider applying effective Non Revenue Water reduction strategies. The assessment of a network's current operating status based on the IWA water balance (WB) is a good start. Although IWA suggests the WB to be annually assessed, this is not ideal for networks experiencing seasonal demand peaks, like in Kos town, capital of Kos Island in Greece. The WB for Kos town network was assessed on a bimonthly basis, following the water billing period used by the local water utility. The results revealed that higher real loss rates occur during the lower water demand periods due to the higher operating pressures. The annual WB can not reveal water loss peak timing.     

基于脆性理论的城中村改造系统风险规避策略研究——以西安市四个城中村为例

城中村改造作为新型城镇化进程中的关键环节,为社会稳定、城市发展、经济繁荣提供了保障。由于改造过程涉及众多利益主体且各主体间呈非合作博弈关系,在实际推进过程中常由于利益冲突而引发社会问题。本文将城中村改造视为一个复杂系统,从脆性熵视角看待城中村改造系统,分析城中村改造系统脆性演化机理,是对复杂系统脆性理论的补充和完善;探讨城中村改造系统脆性风险规避策略,提出规划建议,以期构建稳定、高效的城中村改造系统,具有理论和现实意义。