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随着地铁在城市交通中的地位越来越重要,地铁站点地区的步行环境也引起了越来越多人的关注。站点地区步行环境的好坏直接影响搭乘地铁的人流量,同时,步行环境也是城市环境建设的一部分,因此加强站点地区步行环境的建设示范有必要。文章在对成都市地铁站点地区步行环境进行现状调查分析后,以步行者对步行环境的满意度为准则,从便捷性、安全性、公平性、舒适性四个方面探讨了步行环境的问题所在,并提出了改善意见。 相似文献
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步行作为轨道交通最主要的接驳方式,具有不可替代的作用。以深圳和香港生活街区的轨道交通站点为例,对影响站域步行易达的因素“步行距离、步行时间、步行环境”等进行了测度分析。研究发现,斜向放射状步行路径、建筑物底层架空、复合二层步行连廊能够有效的减少步行距离、步行等待时间等要素,提高步行易达性;受步行网络和站点形态的影响,实际步行集散区与理论步行集散区存在较大差异;多出入口的设置可以有效拓展站域服务面积,提高市民乘坐意愿。结果表明,港铁站点在步行易达性方面存在不小优势,站点步行集散区普遍较大;深圳的开放住区站点兼有城中村站点和封闭住区站点的优势,是值得推广的一种住区模式。在当今城市面临大规模更新背景下,探寻轨道站生活街区步行网络系统构建途径,提升步行出行衔接时效分布,活化站点社区的城市界面,对进一步提高轨道交通分担率有着积极意义。 相似文献
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以深圳地铁2号线为研究对象,通过对沿线土地使用与轨道交通客流的实证分析,探讨土地使用与轨道交通的空间适配问题。研究发现,地铁2号线的客流与站点地区的土地使用之间存在较强的关联性,主要表现为:(1)功能影响。出行的流动主要发生在居住型站点与混合型站点或就业型站点之间;(2)密度影响。站点客流量与站点地区开发密度有正相关性,但高密度开发并不必然生成较高的站点客流量;(3)距离影响。客源大都分布在500m步行可达范围。在此基础上,提出在中国城市实现土地使用与轨道交通的空间适配不宜简单应用TOD模式的高密度开发、土地混合使用、宜人的步行环境等原则,而应该结合中国城市发展的现实状况,着重考虑以下几个方面:(1)站点周边地区潜在的轨道交通使用者密度而非单纯的开发密度;(2)在促进站点周边土地混合使用的基础上,平衡线路乃至线网上不同类型站点的数量与布局;(3)优化轨道交通的自行车和公交接驳服务来扩展轨道站点的服务圈层。 相似文献
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一、研究区域基本现状新疆地处欧亚大陆腹地,地貌轮廓表现为“三山夹两盆”,山地与平原的面积大致各占50%,镶嵌于戈壁沙漠的绿洲仅有7万平方公里。新疆土地面积166.49万平方公里,占全国总面积的六分之一。气候干旱,荒漠广布,是中国最大的干旱区,是亚洲干旱核心区,也是世界上著名的干旱区之一。水资源短缺,生态极度脆弱。新疆2004年底有1950万人,人均GDP已经超过了1000美元,城镇化进入了快速发展阶段,特别是小城镇的发展速度较快。但新疆特殊的干旱区绿洲环境,使得小城镇的发展存在许多问题。一是城镇规模小而散,基础设施配套差,城镇集散和… 相似文献
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Nearly 1500 urine samples were collected from female farmers in eight regions widely scattered in the islands of Japan in the winter of 1987-1988. The samples were analysed for manganese by wet ashing and flameless atomic absorption spectrophotometry under strict quality control. The values observed after adjustment for a specific gravity of 1.016 were distributed log-normally with a geometric mean of 0.65 microgram/l and a geometric standard deviation of 2.47. There was no effect of aging or any effect of smoking on the urinary manganese concentration. The inter-regional difference may be present but not yet conclusive. As no sex difference was observed in a previous study, it may be possible to deduce that the value may possibly stand for the "background" level of both men and women, either smoking or non-smoking, among the general Japanese population. The observed value is discussed in comparison with values reported in the literature. 相似文献
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Although the Dirección de General de Protección Civil (DGPC), an agency of the Spanish government, has been responsible for the collection of data and the statistical analysis of fires since 1985, it has not as yet issued any reports. It is true that a couple of studies have been made, but in neither case did they use a standardized methodology but relied simply on the heterogeneous information provided by the fire brigades which cooperated in the studies. At that time Spanish fire brigades did not have special units for professional fire investigation, nor was the information derived from standardized methodologies suited to research purposes. In addition, information was extremely scarce and basic, focussed only on the fire, the use of the building and personal data of the victims. In this context, the project for a Fire Investigation Unit in the Fire Brigade of Málaga (the sixth largest Spanish province in inhabitants) was set up. Although inspired in the methodologies used in the USA and in the UK, the aim was to create a customized methodology for the first scientific investigation of fires in Spain. Our research was conducted in 2007. Using the methodologies of the USA and the UK, our own methodological approach and the Spanish regulations, we drew up a questionnaire with 110 variables arranged into 6 modules. We studied 96 fires out of the 154 emergency fire calls received in 2007, having omitted some emergency calls for various reasons. Our results revealed that it was necessary to generalize the installation of fire extinguishers in residential buildings, to train the general public in the use of these devices, to promote the use of fire and smoke detectors in residential buildings, to encourage the inspection and control of old electric installations and to monitor the new installations, to generalize the implementation of emergency and evacuation plans and to design new systems and materials for the cabinets where hand-held extinguishers are stored. 相似文献
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介绍了用双硫腙分光光度法测定水中余氯的新方法,阐述了其测定试验过程,根据试验结果显示,其结论符合国家标准,表明该方法可用于自来水等样品中余氯含量的测定,结果比较准确。 相似文献
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AbstractInequalities relating to ownership of housing have become a major issue de jour in many Western societies. This article examines how the distribution of homeownership in Sweden relates to two factors widely seen as significant to such inequalities, namely parental tenure status and place of birth. We use longitudinal registry data to examine the bearing of these two factors on individual-level tenure progression since the beginning of the 1990s for persons at different stages of their housing careers. We extend existing understandings of Swedish homeownership patterns by demonstrating that inequalities relating to place of birth and parental tenure intersect with one another in ways that substantially advantage certain subgroups while disadvantaging others, and by demonstrating that experiences of entry into homeownership have in recent years been changing in markedly different ways for these different subgroups. Overall, Swedish homeownership inequalities, far from dissipating, appear to be hardening along existing lines. 相似文献
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目的:花化、香化、彩化已成为城市园林绿化的主要趋势,也是为满足人们对环境要求越来越高的一种心境。方法:选择采用莳花能表现出品种繁多,色彩艳丽等不同的方式,从而能在很大程度上丰富了植物造景的层次感要求。结果:能使其达到美化环境、增添节日气氛、提高绿化品质等方面有着突出的作用。结论:莳花造景对城市的美化可达到立杆见影效果,从而提高城市的形象和品位。 相似文献
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边坡稳定性的关键问题是确定最危险滑动面(潜在最危险滑动面)和边坡的稳定系数。国内外一般是采用先假定边坡滑移模式,然后近似确定最危险滑动面,再求近似的边坡稳定系数的方法来分析边坡的稳定性,但假设的边坡滑移模式难以反映边坡滑移的实际状态。因此本文探索利用遗传算法搜索最危险滑动面,并得到最小稳定系数及对应的最危险滑动面曲线,取得了较好的效果。 相似文献