武汉某剧院空调气流组织分析

结合现场所测的数据对观众厅部分现有空调喷口送风的气流组织做简要的计算和分析,并简要计算了设计工况下速度分布和温度分布,得出该送风形式下的池座和楼座的气流组织存在诸多问题,进而针对池座提出用旋流风口代替球形喷口垂直下送,楼座则建议改为座椅下送风。     

广西文化艺术中心特殊场所声学施工技术

以广西文化艺术中心项目为依托,对剧院座椅、楼座及池座静压箱、浮筑楼板、剧院声闸等特殊场所声学进行研究,通过分析声学构造加强隔声、吸声性能,达到最佳声学效果,提高剧院整体美观性。     

大型体育场馆座椅送风组合式静压箱施工关键技术

针对传统的双层钢筋混凝土风道施工难度大和漏风量大等问题,对场馆座椅送风组合式静压箱的施工关键技术进行研究。大型体育场馆座椅送风组合式静压箱由土建静压箱、看台钢筋混凝土台阶及座椅送风组合式静压箱封闭而成,采用方钢管与台阶处的埋件焊接连接形成共架平台,采用BIM三维可视化技术,详细阐述关键施工技术,弥补大型体育场馆座椅送风组合式静压箱施工工艺规范化、标准化方面的成果空白。     

剧院送风静压箱气流组织模拟

对某大剧院中剧场池座下送风静压箱建立模型,对所建立的模型中结构尺寸突变、气流速度变化大的座椅支撑送风管区域进行了局部网格的加密;结合静压箱内隔热性能良好的特点,采用了标准RNG湍流模型,压力插值采用标准离散格式,动量方程、k方程、ε方程中的对流项采用二阶迎风格式,压力速度耦合采用Simple算法。最后通过FLUENT求解器中自带的并行运算模块进行联机运算。通过对静压箱内流场的模拟,得出了送风静压箱内在各进风口风量一致的情况下,会导致座椅下送风前后排不均匀以及静压箱内部流场存在的一些问题。     

武钢工人剧院通风空调问题探讨

分析了武钢工人剧院空调系统存在的问题,找出问题的根源所在并提出解决问题的方法。结合现场所测的数据对观众厅部分现有空调喷口送风的气流组织做简要的计算和分析,并简要计算了设计工况下速度分布和温度分布,明确该送风形式下的池座和楼座的气流组织的确存在诸多问题,进而针对池座提出用旋流风口代替球形喷口垂直下送,楼座则建议改为坐椅下送风。     

南京中医药大学体育馆空调设计与整体静压箱的应用

从南京中医药大学体育馆空调设计的实例,分析了比赛馆气流组织和座椅下送风的特点,介绍了作为空调送风的整体静压箱,并结合施工过程,详细说明了整体静压箱构造设计及施工要求。     

地板送风空调系统静压箱送风均匀性模拟研究

建立了地板静压箱的模型,针对静压箱高度和送风口密度对送风均匀性的影响进行了模拟分析。引入送风不平衡率作为评判地板静压箱送风均匀性的指标。结果显示:静压箱送风均匀性随着静压箱高度的增大而提高,存在最小静压箱高度,最小静压箱高度随送风口密度减小而降低;送风均匀性随送风口密度的增大而降低;最小静压箱高度及送风均匀性还受静压箱送风口与进风口距离的影响,实际工程设计时送风口与进风口之间应保持合理的距离。     

轻钢结构覆板静压箱在看台送风施工中的应用——葫芦岛市体育中心体育馆

葫芦岛市体育中心体育馆二层看台下,采用增加轻型钢结构覆板与已有的混凝土看台板结构组成静压箱作为看台送风的通道。经空调机房制冷或制热和置换的新风送至看台下的静压箱,并通过静压箱上部结构的看台留孔,将冷(暖)风均匀的送到看台座椅下,很好地满足了送风和排风的要求。     

某文体中心体育馆狭长静压箱气流组织设计优化

某文体中心体育馆部分采用静压箱座椅送风,由于建筑条件限制,只能设置为狭长静压箱,因此进风口风速衰减距离过短将对出风均匀性产生影响。通过利用Fluent软件对该静压箱采用不同方案进行模拟研究,结果显示,送风均匀性随着进风口数量增加而提高。     

某音乐厅夏季气流组织数值模拟分析

以某音乐厅为例,本文利用k-εCHEN紊流模型对某音乐厅使用多种送风方式下的气流组织进行了数值模拟,针对楼座及池座区气流组织的特点,通过改变舞台区侧送风角度优化音乐厅送风条件,获得不同送风角度组合下舞台区温度和速度分布的变化规律,发现舞台区送风口的送风角度分别为9°、11°和11°时气流组织达到最优组合,在此基础上分析了该最优条件下楼座及池座的温度和速度分布特征,为空调设计方案提供参考。     

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.