旧城改造中房屋拆迁补偿估价

由于土地资源日益短缺,城市建设已难再进行大规模的新区开发,开发方式由扩张转变为更新,旧城改造逐步成为城市建设的主要形式。 在城市旧区改造过程中,房屋拆迁一直是“老大难”问题,从制定拆迁方案到补偿安置,任何一个环节“卡壳”将直接影响到整个旧城改造的顺利进行。房屋拆迁补偿估价则是其中一个重要环节。 1 房屋拆迁补偿估价概述     

南昌市“大规模拆迁”旧城改造模式的成因剖析与转型思考

南昌市的"大规模拆迁"现象,既有其自身的特殊性,也反映了经济欠发达地区大城市旧改的一些共性问题。对南昌市旧改历程和最新一轮旧城改造的实施情况进行回顾,反思实施过程中出现的问题,指出大规模拆迁式旧改模式的弊端,总结南昌市旧改模式的四个成因,并由此提出了转变指导思想、构建规划体系、加强需求评估、鼓励制度创新四项旧改模式转型的建议,从而为南昌市旧城改造工作从大拆大建向有机更新的转变提供思路和路径。     

长春解决拆迁难题：先回迁再拆迁

拆迁问题被称为“城市第一难题”。吉林省长春市在大规模的棚户区改造中,探索并采用“先回迁,再拆迁”的拆迁安置新模式,不仅加快了拆迁速度,节省了拆迁费用,而且使被拆迁居民免受反复搬迁之苦,受到群众的欢迎。     

各地通讯

东营区史口镇把提高城镇载体功能,促进小城镇建设水平的提高,作为推动经济发展的一项重要举措。近年来该镇始终以拉动经济增长、优化经济环境为目的,以道路改造为突破口,以开发建设为手段,不断加快城镇建设步伐。今年已来,他们组织强有利的领导班子对镇中心商业街实施了大规模的拆迁改造,共拆迁居民住房173户,单位4处,拆迁房屋1750间,面积14000平     

从城市管治的角度看城中村的改造策略

近年来,地方政府对城中村的改造热情高涨。如昆明市于2008年提出,要用5年时间完成建成区内336个城中村的改造改建工作。广州市2011年仅上半年就要完成15个城中村的建设方案审批,面积近似于七个珠江新城,类似的案例不胜枚举。然而,就在城中村将被"外科手术"似的拔除过程中,强制拆迁、暴力拆迁的问题屡禁不止,城中村成为社会矛盾日渐加剧的焦点。将大规模拆迁改造作为终结城中村的手段本身风险巨大,方式值得商榷。是否有其他思路可以替代现行的改造方式     

宁波金融业里的百年遗风——钱庄业文物建筑代表之钱业会馆

江南一带的古老城市,不管如何大规模地被拆迁改造,总有些个角角落落,会令你不经意地发现一些历史和文化的旧迹,让人兴奋不已！     

装修

<正>拆迁旧建材流入黑市亟待规范建材市场在不少地方新一轮大规模的旧城改造热潮下,由城市拆迁产生大量的旧建材如同一股暗流,不断渗透进城乡的建筑黑市。有关部门及专家指出,针对城市拆迁产生的旧建材再利用问题,至今还没有一部完善的政策法规对此加以规范和约束,普遍存在的拆迁旧     

城镇改造建设拆迁问题调查

近几年来,我国各大城市进行的大规模旧城改造建设,通过房屋拆迁,不同程度提高和改善了城市环境和市民的居住条件.房屋拆迁不单纯是一种市场行为,而且是涉及到包括拆迁、补偿、房产、土地、建管、街道、社保等多方面广泛参与的系统工程,单项突进必然引发矛盾.     

棚户区改造模式亟须改变

正前一阶段的棚户区改造取得了巨大成就,但随着经济形势的转变,通过大规模拆迁改造棚户区的模式,也必须随之调整。棚改不利于"去库存"棚户区改造的模式各地不尽相同,但基本模式大同小异。就是通过现有棚户区(大多位于较好的区位)容积率增加,然后在市场上以商品房市场价格出售增容部分,用来平衡拆迁和重置成本(虽然有些棚改靠的是发债,但除了少部分中央补助外,最终的资金来源仍是土地)。如果拆迁成本低、市场房价高,增容就     

城镇改造建设拆迁问题调查

近几年来,我国各大城市进行的大规模旧城改造建设,通过房屋拆迁,不同程度提高和改善了城市环境和市民的居住条件。房屋拆迁不单纯是一种市场行为,而且是涉及到包括拆迁、补偿、房产、土地、建管、街道、社保等多方面广泛参与的系统工程,单项突进必然引发矛盾。目前,以房屋拆迁和居民安置为中心的城市拆迁纠纷愈发凸显,成为群众上访的一大焦点问题。截至2003年8月31日,国家信访局收到拆迁上访信件11641件,比2002年同期上升50%;上访人数5360人,上升47%。拆迁问题如不妥善解决,必将影响正常的生活秩序和社会稳定,最终成为经济发展的障碍。一、…     

Reconstitution of the dynamics of an urban building stock

What are the patterns and influences on the lifespan of the building stock? This paper presents (1) the reconstitution of an urban building stock composed of more than 60 000 buildings, (2) the analysis of the development of this stock over a period of 180 years (constructions and demolitions), and (3) the analysis of building mortality patterns and reasons for demolition resulting from historic decisions and regimes. A method to reconstitute the stock from different data sources is presented. The mortality models take into account not only the present demolition rates and the age distribution of the ‘survivors' but also the disappeared buildings. The main results are new insights into the lifespan behaviour of buildings according to their period of construction (cohorts) as well as the reasons for demolition. The demolitions do not show specific explanation patterns, but changing influences of the construction activities over time. The average demolition age of all buildings in Zurich, Switzerland, decreased from over 200 years to fewer than 70 years. A total of 18 000 buildings have been demolished over the 180-year period. The presented methods and results can be integrated in multidimensional geographical information systems (GIS) as comprehensive planning, scenario and regulatory tools.     

和泰大厦基坑双层密布混凝土支撑拆除技术

结合和泰大厦工程基坑双层密布混凝土支撑的拆除过程,阐述了支撑拆除的工艺流程,对钢管立柱桩破除、托换、换撑、拆撑、封井等工序进行了介绍,通过合理安排拆除顺序,确保了基坑安全及地下室施工的质量和顺利进展。     

建筑固体废物的资源化价值实证研究

从国际建筑固体废物资源化研究的前沿入手,归纳了建筑固体废物资源化的方式.以生态经济学的能值价值理论为基础,构建了建筑固体废物资源化价值的评估指标体系,并选择典型建筑固体废物对其资源化产品价值进行了实证研究.     

Laboratory evaluation of recycled construction and demolition waste for pavements

The wide production of construction and demolition waste and its illegal deposition are serious current problems in Brazil. This research proposes to evaluate the feasibility of using aggregate from recycled construction and demolition waste (RCDW) in pavement applications. A laboratory program was conducted by geotechnical characterization, bearing capacity and repeated load triaxial tests. The results show that the composition and the compactive effort influence on the physical characteristics of the RCDW aggregate. The compaction process has promoted a partial crushing and breakage of RCDW particles, changing the grain-size distribution and increasing the percentage of cubic grains. This physical change contributes to a better densification of the RCDW aggregate and consequently an improvement in bearing capacity, resilient modulus and resistance to permanent deformation. The results have shown that the RCDW aggregate may be utilized as coarse base and sub-base layer for low-volume roads.     

软土地基支撑机械拆除及临近建筑动力响应研究

以上海市某大型基坑内支撑机械拆除为例,在大量振动监测的基础上,研究了基坑内支撑机械拆除过程中产生的振动在基坑内部和基坑边缘挡土墙、高层建筑物竖直方向上的传播规律,监测同时考虑了临近建筑对机械振动的动力响应。研究表明:机械拆除基坑内支撑对周围建筑物所产生的振动速度较小,不足以影响构筑物结构安全,但由于振动信号的主频较低,接近于建筑物的固有频率,地震效应仍应该引起足够重视;利用小波包技术可得到振动信号各频带上的能量分布,从能量角度研究振动信号可以直观地了解信号在传播过程中的衰减特性。     

广州珠江新城西塔432m高空重型塔式起重机拆除技术

重型塔式起重机屋面拆除是目前国内超高层施工中必须考虑的问题。结合珠江新城西塔M900D重型塔式起重机的拆除方法及拆除过程,提出了相关重型塔式起重机高空拆除的施工思路及要点。介绍了施工工艺,并对拆除塔式起重机基础进行了力学分析。在拆除过程中,拆除设备的布置应相对集中,拆除设备基础与结构的连接应尽量位于结构的强点,基础构件应选用箱形截面。     

Concrete building blocks made with recycled demolition aggregate

A study undertaken at the University of Liverpool has investigated the potential for using recycled demolition aggregate in the manufacture of precast concrete building blocks. Recycled aggregates derived from construction and demolition waste (C&DW) can be used to replace quarried limestone aggregate, usually used in coarse (6 mm) and fine (4 mm-to-dust) gradings. The manufacturing process used in factories, for large-scale production, involves a “vibro-compaction” casting procedure, using a relatively dry concrete mix with low cement content (≈100 kg/m³). Trials in the laboratory successfully replicated the manufacturing process using a specially modified electric hammer drill to compact the concrete mix into oversize steel moulds to produce blocks of the same physical and mechanical properties as the commercial blocks. This enabled investigations of the effect of partially replacing newly quarried with recycled demolition aggregate on the compressive strength of building blocks to be carried out in the laboratory. Levels of replacement of newly quarried with recycled demolition aggregate have been determined that will not have significant detrimental effect on the mechanical properties. Factory trials showed that there were no practical problems with the use of recycled demolition aggregate in the manufacture of building blocks. The factory strengths obtained confirmed that the replacement levels selected, based on the laboratory work, did not cause any significant strength reduction, i.e. there was no requirement to increase the cement content to maintain the required strength, and therefore there would be no additional cost to the manufacturers if they were to use recycled demolition aggregate for their routine concrete building block production.     

某建筑上部高耸构筑物拆除施工工艺

既有建筑高耸构筑物部分的拆除不同于一般破碎拆除,为避免对下部结构的破坏,需采用保护性静力拆除,同时受周边环境及空间的影响,拆除施工及废物清运过程中须用到大型且相对灵活的机械和车辆。既有建筑物一般周边环境相对复杂,受相邻建筑物影响,场地空间局限性较大,对各种机械及车辆的约束较多,采用常规机械及拆除方式难以实施。本文以某建筑上高耸构筑物部分拆除工程为例,介绍复杂工况下的高耸构筑物保护性拆除关键施工工艺。     

静态爆破在结构改造工程中的应用

介绍在结构改造中利用静态爆破破碎钢筋混凝土工程的设计及施工情况,认为采用密集空孔,结合静态爆破进行混凝土的拆除破碎效果良好,可作为类似工程的参考.     

钢筋混凝土桁架拱桥安全拆除的方案研究

通过对宁通公路六合大桥拆除方案的分析和研究,初步探索了钢筋混凝土桁架拱桥安全拆除的方案,实践证明,该钢筋混凝土桁架拱桥通过制定可行的拆除方案,保证了拆除过程的安全、顺利进行.