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问:能否介绍一下您在怎样的背景下提出2007深圳·香港城市\建筑双城双年展的主题——"城市的过期和再生"?马清运:一般说来对于城市的理解有两种学派,一种学派认为城市是通过时间的孕育和历史的演变自然而然生长出来的,是一个有机体,所有的有机体都有生、长、熟、死的过程。但这恰恰违背我们盖房子和建城市 相似文献
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北京:积极推进节约型园林绿化 总被引:1,自引:0,他引:1
·编者按· 实施节约园林,是当今世界非常关注的问题,更是人类对自己所生存的环境关爱的明智之举.本期专题围绕"节约园林"这个行业的热门话题,邀请北京、上海、广州三个城市的专家领导和从事设计、科研、建设的专家,结合自己的实践各抒己见,并介绍推荐了许多好的做法,给读者以启发和借鉴. 相似文献
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十年前,建筑界最精力充沛的探险家瑞姆·库哈斯带领着他的哈佛团队潜入珠三角,以一部后来被冠名为"大跃进"的集体著作,拉开一个区域被大笔书写的序幕。此后的十年,以广州、深圳为中心的珠三角城市故事作为一种全新的模式受到世界关注。这里发生的一切好像一部美国西部大开发历史,曾经蛮荒的土地上,城市运动带来的变化令人目眩神迷。 相似文献
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2005年4月8日,在”四面荷花三面柳,一城山色半城湖”的文化名城济南,山东临工工程机械有限公司迎来了喜庆的日子。经国家人事部批准,临工博士后科研工作站正式成立,同时挂牌的还有临工工程机械研究所。出席挂牌典礼的有山东省人事厅的领导、临沂市人民政府的领导、中国工程机械工业协会的领导,还有吉林大学、同济大学、长安大学、山西科技大学、北京航空航天大学、柳工工程机械集团的专家、教授以及新闻媒体、协作单位的代表。 相似文献
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The 121 mining method of longwall mining first proposed in England has been widely used around the world.This method requires excavation of two mining roadways and reservation of one coal pillar to mine one working face.Due to considerable excavation of roadway,the mining roadway is generally destroyed during coal mining.The stress concentration in the coal pillar can cause large deformation of surrounding rocks,rockbursts and other disasters,and subsequently a large volume of coal pillar resources will be wasted.To improve the coal recovery rate and reduce excavation of the mining roadway,the 111 mining method of longwall mining was proposed in the former Soviet Union based on the 121 mining method.The 111 mining method requires excavation of one mining roadway and setting one filling body to replace the coal pillar while maintaining another mining roadway to mine one working face.However,because the stress transfer structure of roadway and working face roof has not changed,the problem of stress concentration in the surrounding rocks of roadway has not been well solved.To solve the above problems,the conventional concept utilizing high-strength support to resist the mining pressure for the 121 and 111 mining methods should be updated.The idea is to utilize mining pressure and expansion characteristics of the collapsed rock mass in the goaf to automatically form roadways,avoiding roadway excavation and waste of coal pillar.Based on the basic principles of mining rock mechanics,the“equilibrium mining”theory and the“short cantilever beam”mechanical model are proposed.Key technologies,such as roof directional presplitting technology,negative Poisson’s ratio(NPR)high-prestress constant-resistance support technology,and gangue blocking support technology,are developed following the“equilibrium mining”theory.Accordingly,the 110 and N00 mining methods of an automatically formed roadway(AFR)by roof cutting and pressure releasing without pillars are proposed.The mining methods have been applied to a large number of coal mines with different overburdens,coal seam thicknesses,roof types and gases in China,realizing the integrated mode of coal mining and roadway retaining.On this basis,in view of the complex geological conditions and intelligent mining demand of coal mines,an intelligent and unmanned development direction of the“equilibrium mining”method is prospected. 相似文献
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城市解读--试论城市意象的模糊性及对策 总被引:1,自引:0,他引:1
文章就现代城市特色缺乏、意象衰微而提出城市意象模糊性问题,追溯了其理论与3两方面的原因。作者探讨了相关的对策理论及其非决策 之后,就所截取的城市的四个片断进行了对策性的研究,以期对提高城市意象力作出有益的探索与尝度。 相似文献
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论墙材革新及墙材装备的发展 总被引:1,自引:0,他引:1
墙材革新与技术改进的关系;墙材革新现状及市场经济形势;墙材及装备发展思路;加入WTO后对墙材生产及墙材装备行业的影响及一些亟待解决的问题。 相似文献
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五年多来在美国西北部的一个安全度很高的军用飞机场的停机坪上,石油基填缝料的破坏和边缘剥落等情况时有发生,对喷气发动机吸入异物造成了潜在的危险,从而引起了大家的关注。为了对原有的损坏进行修补,减慢将来边缘和接缝的破坏,主要是根据材料和正确的安装技术制订了设计标准。 相似文献
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从科学方法论的视角对普遍存在于自然界、工程技术领域以及经济、社会领域中的互动现象进行了初步探讨.建立了互动、互动效应、互动发生规律等概念,对互动效应、互动方式和互动发生律进行了初步分类.并对互动原理在科学史和科学实践中的运用进行了分析和讨论. 相似文献
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随着中国建筑市场的发展,建筑开发商对建筑项目的品质、成本、进度等的要求越来越高,这使得项目管理中的关键环节——设计管理变得越来越重要。本文介绍了项目管理中设计管理的概念和任务,分阶段论述了设计管理在工程项目中所起的作用,指出了设计管理的核心,并指出了一种研究设计管理的内容和方法的途径。本文最后列举了两个工程实例,从正反两个方面说明了设计管理的重要性。 相似文献
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本文通过对我市建筑市场状况的分析,在市场经济条件下,如何加强建筑市场管理,发挥各职能部门的作用,提高建设工程质量进行一些肤浅的探讨。 相似文献
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分析了项目成本管理的含义,针对设备管理在成本控制中的重要性,从设备的使用、维护和维修三个方面进行了深入探讨,以提高设备的完好率、利用率、经济寿命率,从而更好地控制项目成本. 相似文献
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氧化锌压敏电阻自身的热效应引起限压型电涌保护器短路起火的事件越来越多,为了保证配电系统的安全运行,有必要对SPD的散热特性进行研究。当SPD内部存在多个电阻片并联结构时,电阻片组与SPD外壳之间存在着较大的间距,间距距离的大小会影响SPD的散热性能。运用传热学原理对SPD进行了理论传热计算,计算结果表明,间距距离越小,SPD散热能力越强。以3个电阻片并联且左右两侧间距不等的SPD为例,通过试验研究不同间距距离下的SPD降温曲线,结合传热学计算结果分析间距大小对SPD散热能力的影响。实验结果表明:在进行SPD结构设计时,减小电阻片与外壳之间间距能有效提高其散热性能。 相似文献
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Raymond Bunker 《Planning Perspectives》2013,28(1):61-82
Metropolitan plans were prepared in Australia from 1948 to 1962 for four of its five biggest cities - the state capitals of Sydney, Melbourne, Perth and Adelaide. They contain the first analyses and proposals for their rural-urban fringes. The earliest, that for Sydney, is the most visionary and radical and defined a Green Belt to contain and shape a slowly growing city; to provide amenities and recreation for citydwellers; and to reconstructa countryside ravaged by 'promiscuous urbanisation'. The next two plans for Melbourne and Perth are much more pragmatic, dealing with the organisation of headlong metropolitan expansion with surrounding rural areas seen as suburbs-in-waiting within servicing and topographical constraints. The last, that for Adelaide is a mixture of trend planning with strong design themes partly expressed in the fringe. These are forthright exercises in the master-plan mould. Developments since the 1950s regarding the fringe are briefly reviewed in the case of Sydney. These show much more complex issues and perceptions arising, particularly regarding natural resource management. There is consequently an absorbing challenge in describing these dynamic images, and also in shaping a policy-making process to reflect and handle them. There is also a possibility, apparent in the metropolitan plans of the 1950s, of cultural differences between the cities in this regard. 相似文献