上海某高层楼宇创新开发改建研究

上海市繁华商业地段的一栋30层酒店采用了创新开发改建方式,对楼宇外部进行围护封闭后并始终保持矗立不变的前提下,将楼宇结构由原混凝土结构逐步替换为钢结构。对地上楼宇结构进行改建的同时,对楼宇的裙楼地下室也要进行改扩建。项目将裙楼原地下室由1层改扩建为4层地下室。改建后,楼宇的结构、空间、层高和车位等完全满足现代商业写字楼的要求,改建后楼宇原酒店业态将转变为全新的商业写字楼业态。     

超深地下结构改建施工技术

依托大连国贸中心大厦工程地下室改扩建项目,阐述了闹市区大型基坑超深结构的拆除与改建施工技术。由于项目改扩建幅度较大,整个地下结构需进行大范围拆除和改建施工,面临诸多安全和环境方面的严格要求,进而对改建施工技术提出较高的挑战。对地下结构的改建施工进行详细的介绍和分析总结,为今后相类似基坑工程的施工提供了参考。     

探讨地下室改建工程过程中如何应对施工缝防渗

该工程技术改造项目实际上属于高层改建装修工程,地下室由于上部结构进行了很大的改造,在原钢筋混凝土结构和新浇筑的钢筋混凝土结构之间难以对具备防渗构造处理的施工缝操作。所以,利用对新旧混凝土交界位置的施工缝采取针对性比较强的技术进行处理,这样可以对防渗问题做到有效解决,为地下室结构改建过程中遇到相似的施工缝的项目提供了有利的解决经验。     

地下室改建工程中的施工缝防渗措施

某工程技术改造项目为高层改建装修工程,其地下室因上部结构的改造较大,在新浇筑的钢筋混凝土结构与原钢筋混凝土结构之间无法施做带有防渗构造处理的施工缝。为此,通过对新旧混凝土交界处施工缝进行有针对性的技术处理,很好地解决了防渗问题,为地下室结构改建中出现同类施工缝的项目提供了可借鉴的解决方案。     

旧建筑地下室扩建工程的结构改造

结合上海某典型案例,介绍了旧建筑地下室扩建施工过程中的技术难题和解决方案。通过合理规划既有地下结构承载力改造及地下障碍物的处理方案,在对周边扰动最小的条件下,完成了地下室的扩建,为地下工程改建提供了新的技术方向。     

高层建筑结构改扩建及加固施工技术

根据区域规划建设需要,对29层的上海港运大厦主楼下部结构进行改建、上部结构扩建施工。由于改扩建施工对原结构形式带来变化,对主楼下部主体结构以及地下室进行结构加固,以确保结构安全性与适用性。详细介绍了拆除、改扩建及加固工程施工工艺。实践证明,结构改造效果良好。     

城市更新项目地下障碍物的清除及对周边环境影响的研究

上海市某高层改建项目位于市中心,一侧邻近轨交隧道,周边环境复杂。改建过程需对原建筑地下室范围和深度进行调整,因而需对地下障碍物进行清除。介绍了对原地下室外墙及底板、钢板桩、钢管桩等障碍物的清除方案。通过轨交隧道的水平位移监测可以发现,清障施工对周边环境的扰动不大,所述方案切实可行。     

大楼电梯井改建工程的施工技术研究

某大楼改建中有一部电梯要下到地下1层,改建的电梯井需穿过原地下室厚1.3 m的底板,建筑结构筒体部分的剪力墙也将被切除,施工难度颇大.为此,介绍了在改建过程中对原底板、筒体剪力墙的切除,基坑的加固、开挖和结构新建等施工技术以及质量、安全控制的措施,为类似工程施工的质量控制提供了借鉴经验.     

高水位既有地下室结构补桩关键技术

在对已有地下室结构进行拆改的工程中,尤其是在由于原桩基设计承载力不能满足新结构需要而进行补桩的工程中,一般存在着施工操作面、泥浆控制、成桩垂直度控制、已建结构保护等方面的难点。为保证桩基施工质量,进而确保后期结构改建的整体施工质量,依托实际工程案例,通过采取原地下室结构加固、楼板开孔、设置钢套筒抬高水位等措施,从而有效地保证了补桩施工过程中的安全及质量。     

高层建筑物改建中若干结构问题的处理

针对结构改建中存在的抗震等级提高、新旧规范更新、平面扩建、地下室补桩等难点，介绍上海20世纪90年代末设计和施工的商住大厦改建为医院病房楼的设计思路。从概念设计的角度对各种情况、不同构件进行加固设计，做到经济、合理、有效、实用。     

浅析高速公路工程招投标中的最低评标价法

结合目前高速公路施工项目招投标活动的实际情况,阐述了最低评标价法的概念,归纳了其优点及存在问题,对完善最低评标价法提出几点策略,以期促进招标投标市场更加规范有序。     

Place-Making in Megaprojects in Melbourne

This article analyses state-led place-making practices in Melbourne. The two levels of government that influence planning in Melbourne make much of the city as ‘culturally vibrant’ and ‘creative’, and have incorporated creative city-inspired place-making principles into many layers of the planning system. An examination of the development of two mixed-use megaprojects in central Melbourne reveals however that ideals of culturally engaging public places, and indeed of creative landscapes for middle-class consumption, wither in the face of more basic imperatives for economic development. In these case studies the ‘creative city’, no matter how the idea is interpreted, has little traction either as a set of inclusive place-making principles or as a gentrification strategy. The article concludes that the creative city-inspired place-making objectives in the planning system at both state and local levels are ambiguous in their overall intents and completely unsupported by statutory controls. Such place-making objectives as are realised are the compromised results of the interplay of uncoordinated decisions, delivered at the pleasure of the developer.     

Pathogens in septage in Vietnam

Septage is widely acknowledged as a major source of infectious pathogens while disposal of septage, and the operation and maintenance of septic tanks, is not regulated in many developing countries. Twenty untreated septage and septage sludge samples were taken from Can Tho City, Vietnam to examine their pathogen content, and indicator micro-organisms. Escherichia coli and Enterococcus spp. were detected in all samples, regardless of sludge storage time. Phages were detected in 80% of samples. Salmonella spp. were detected in 70% of the untreated septage and 60% of septage sludge samples. Concentrations of phages and bacteria tested in septage sludge after many years of tank storage were much higher than the expected levels. Helminth ova were present in 95% of untreated septage samples with an average of 450 ova l^− 1, and were detected in all septage sludge samples with an average of 16,000 ova l^− 1. Twelve varieties of helminth ova were identified. More helminth ova varieties in higher concentrations were found in septage than those reported from stool samples. The varieties' frequency ranged from 10% to 50% and Ascaris lumbricoides predominated. Results show that pathogens and indicator micro-organisms, especially helminth ova, accumulate in sludge. Thus helminth ova should be considered when septage sludge is treated and used for agriculture. Proper health protection measures must be applied for people handling septage.     

在市场中实践在实践中学习在学习中进步--工程公司市场化进程的回顾与展望

近两年来，工程公司在提高市场竞争意识、推动市场化进程中做了大量工作，其中坚持走出去的方针是我们自我加压、推行加快市场化步伐的一个重要战略步骤。     

新时期广东城市化的新特点

新时期广东城市化出现以下特点:知识源导向、城市由单体向群体化发展、产业集群推动、政府主导自上而下的集约化发展、城镇化向城市化转变、由重“数量”发展向重“质量”发展的转变。     

新形势下高校强化基建财务管理的探讨

在市场条件下高校基建财务人员在加强日常财务管理的同时,必须树立起高度的工作责任心,抓好事前监督、事中监督、事后监督三个环节,全面理解、贯彻执行《高等学校财务制度》,管好用好各项基本建设资金,提高基建财务管理水平,更好地完成高校各项基建任务,以有限的投资,最快的建设速度,获得最大的投资效益。     

2005年北京办公物业市场七大趋势

趋势一:CBD区域写字楼集中放量从各区域规划方案上看,CBD区域多数项目在03～04年处于项目的报批手续及拆阶段,预计2005年正式推向市场,因此2005年CBD区域将成为北京市场供应集中的域,区域即将供应的项目有北京财富中心(二期)、金地国际花园、万达广场、SOHO尚都、万通中心、世纪财富中心、怡禾国际中心、光华国际等。除去未知项目,2005CBD写字楼办公面积的供应量为60万平方米左右。中关村区域经过一段时间的集中供后开始逐步放缓,2005年供应的体量相对较大的项目有中关村金融中心、新中关。金街区域可能开盘的项目只有2个:英蓝国际中…     

浅谈我国工程项目建设成本控制存在的问题

结合目前我国施工企业工程项目成本管理现状,对工程项目成本管理过程中存在的问题进行了较详细的分析,并提出了一些解决问题的办法,以做好项目成本控制工作,进而增强企业经济实力。     

Variation in property taxation in Tulsa

Conclusions It may be reasonably concluded from this study that the range of variation in these ratios of assessed to actual value are of a reasonable size for the great majority of cases. The frequency distribution of these sample ratios was not normal, however, as was assumed a process of this type would produce. On the other hand, the failure of the regression analysis to identify any significant variables which would explain these variations would tend to re-enforce the assumption that the fluctuations were indeed of a random nature.To sum it up in one paragraph, aside from a few extreme cases, the assessing process appears to give estimates which are more consistent than would be expected under the assumption that any errors would be of a random nature, but the regression analysis was unable to isolate any particular socioeconomic characteristics which would explain the variation which was present.Financial support for this research project was furnished by the University of Tulsa.