某行政办公楼新增外挂电梯的改造设计

对某行政办公楼进行新增外挂电梯的改造设计,对比分析了多种改造的结构方案。针对最终方案确定相关关键参数,采用振型分解反应谱法分析了新增结构对原结构在小震作用下结构整体指标的影响程度,通过静力弹塑性分析给出了结构能力谱与需求谱的关系,判断结构在大震作用下的性能状态。分析结果表明:当新增结构抗侧刚度较大时,不同材料阻尼比的确定是关键;新增电梯对整体结构在小震和大震作用下的承载能力和变形能力的影响并不明显,但需对局部构件进行加固。     

A survey and analysis of lift performance in an office building

The primary aim of this paper is to report the results of a survey of lift usage and performance in an office building in Croydon. Extreme value theory is shown to be an effective method of illustrating the variability of peak lift usage. In the second part of the paper a mathematical model is proposed for determining the probability of a lift reversing at any floor, and the probability of various numbers of stops occuring per round trip during the up-peak usage period of the morning. The results of the lift survey are used to test these two mathematical models.     

某综合保税区通关服务中心结构抗震设计与分析

通过对结构单体进行小震弹性计算和弹性时程补充计算,精细化补充分析了楼板平面整体性、屋面悬吊桁架和X向、Y向单跨大悬挑单榀框架,并采用PUSHOVER校核结构大震变形能力及塑性演化过程,验证了阵型分解反应谱设计方法的可靠性。     

深圳市某办公楼空调系统节能潜力分析

通过对深圳市某办公楼空调系统运行状况的调查测试和模拟，分析了该工程冷水机组及冷水系统的运行方案，提出了空调系统节能改造方案并讨论了其经济性。     

A hybrid decision support system for sustainable office building renovation and energy performance improvement

Energy consumption of buildings accounts for around 20-40% of all energy consumed in advanced countries. Over the last decade, more and more global organizations are investing significant resources to create sustainably built environments, emphasizing sustainable building renovation processes to reduce energy consumption and carbon dioxide emissions. This study develops an integrated decision support system to assess existing office building conditions and to recommend an optimal set of sustainable renovation actions, considering trade-offs between renovation cost, improved building quality, and environmental impacts. A hybrid approach that combines A* graph search algorithm with genetic algorithms (GA) is used to analyze all possible renovation actions and their trade-offs to develop the optimal solution. A two-stage system validation is performed to demonstrate the practical application of the hybrid approach: zero-one goal programming (ZOGP) and genetic algorithms are adopted to validate the effectiveness of the algorithm. A real-world renovation project is introduced to validate differences in energy performance projected for the renovation solution suggested by the system. The results reveal that the proposed hybrid system is more computationally effective than either ZOGP or GA alone. The system's suggested renovation actions would provide substantial energy performance improvements to the real project if implemented.     

A simple design tool for the thermal study of an office building

The objective of the OPTI program (the office building module) is to help architects, engineers and design departments to take into account the impact of design choices on energy consumption designing a project.In order to do so, the program must:

• •be highly user-friendly (language based on drawings);
• •need a minimum of data;
• •be very fast.

The computation of energy needs and overheating estimation require dynamic thermal programs. These are often slow and need a large amount of data.The use of many parametric studies realized with a dynamic thermal program along with the application of a method used in experimental research (method of experimental design) allowed us to create software providing the user instantaneously with results from a dynamic thermal program without subjecting architects to the disadvantages of this type of program. Indeed, the program provides annual thermal needs and thermal comfort (winter and summer) in relation with orientation, building footprint, window area and type, internal gains, presence of external or internal shading devices, ventilation strategy applied and thermal mass. This design tool is based on Belgian climatic weather data but the same step could be transposed to other climatic data.     

密克罗尼西亚办公楼及官邸空调设计

该工程地处典型的热带气候地区,办公楼采用多联机空调系统辅以新风换气热回收系统;官邸采用分体空调系统。     

Identification of key factors for uncertainty in the prediction of the thermal performance of an office building under climate change

There is growing concern about the potential impact of climate change on the thermal performance of buildings. Building simulation is well-suited to predict the behaviour of buildings in the future, and to quantify the risks for prime building functions like occupant productivity, occupant health, or energy use. However, on the time scales that are involved with climate change, different factors introduce uncertainties into the predictions: apart from uncertainties in the climate conditions forecast, factors like change of use, trends in electronic equipment and lighting, as well as building refurbishment / renovation and HVAC (heating, ventilation, and air conditioning) system upgrades need to be taken into account. This article presents the application of two-dimensional Monte Carlo analysis to an EnergyPlus model of an office building to identify the key factors for uncertainty in the prediction of overheating and energy use for the time horizons of 2020, 2050 and 2080. The office has mixed-mode ventilation and indirect evaporative cooling, and is studied using the UKCIP02 climate change scenarios. The results show that regarding the uncertainty in predicted heating energy, the dominant input factors are infiltration, lighting gain and equipment gain. For cooling energy and overheating the dominant factors for 2020 and 2050 are lighting gain and equipment gain, but with climate prediction becoming the one dominant factor for 2080. These factors will be the subject of further research by means of expert panel sessions, which will be used to gain a higher resolution of critical building simulation input.     

北京某既有办公楼的节能诊断

以北京某既有办公楼节能诊断为例,从建筑概况、围护结构、空调系统、供暖系统、通风系统等方面介绍了办公类建筑节能诊断的主要内容及方法,并通过技术经济比较给出了节能改造的建议。     

基于TRNSYS的某办公建筑负荷计算示例分析

采用TRNSYS软件与SIMCAD软件建立了建筑物模型,并对完成建筑物负荷模拟的方法进行了介绍,以减轻空调系统优化的过程中再额外采用其他的能耗模拟软件来单独处理负荷而引起工作量较大的情况。     

某大厦冷热源技术经济分析比较

对某大厦空调及热水供应系统的冷热源系统形式进行了全面的技术经济分析和比较，根据现场情况、技术可行性及初投资和运行费用，提出了适宜的系统方案。     

综合客运枢纽客流引导标识设计要点分析

分析了目前综合客运枢纽客流引导标识及其设计存在的问题,通过调查对四种不同类型的客流引导标识进行了设计,得出相应类型的客流引导标识设计要点,以对综合客运枢纽客流引导标识的改善和设计提供参考。     

上海某办公楼变风量空调系统设计运行分析

简要介绍了变风量空调系统的原理及优缺点.结合工程实例,介绍了变风量空调系统的负荷计算、末端选型、风口布置、运行策略等.     

旧办公楼加固与施工

对补强加固采用的材料进行了简单介绍，阐述了加大截面加固法、粘贴钢板加固法、有粘结外包型钢加固法、植筋技术、裂缝修补技术、粘贴纤维加固法等的施工工艺特点及技术要求，以保证建筑物的整体作用，提高建筑物的施工质量。     

某办公楼空调系统故障分析及调试

针对某办公楼出现的室内相对湿度过高、新风量不足、空气有异味等问题,分析了设计资料进行现场调研,采取降低冷水机组供回水温度、调节风机盘管风速、适当关闭风机盘管台数、清洗在等措施,基本解决了室内空气品质问题。探讨了该工程空调系统设计中不足之处和运行管理中应注意的问题。     

某哑铃型办公楼抗震分析与设计

针对某办公楼平面属于哑铃型的不规则平面,根据规范的性能设计理念,运用SATWE及MADIS软件对此结构进行了性能化设计,针对此平面的特点,在细腰处设置剪力墙核心简,可有效降低应力集中,保证水平剪力的有效传递,减轻震害。     

某办公建筑空调系统变风量改造

原空调系统能耗高，运行噪声大，人工调节控制，影响正常工作；经过变风量改造后，系统运行稳定可靠，能耗降低约1／2，机组A声级噪声均小于60dB，改造投资在2—3年内即可回收。     

某办公楼工程的质量鉴定

结合某办公楼停工续建的具体情况,对工程资料及现有建筑和现浇钢筋混凝土构件进行了外观质量检查,并对钢筋混凝土构件强度、砂浆强度及锈蚀钢筋的力学性能进行了检测,以保证续建建筑物的结构安全。     

高层住宅电梯数量的计算

阐述了设置电梯的一般原则，分析了电梯平均发行间隔时间的计算以及能运量的计算，并结合一具体实例，说明了如何通过计算确定住宅电梯数量，以达到安全可靠、方便、经济的目的。     

某办公楼混凝土结构开裂检测分析

通过调查检测混凝土结构中氯离子的含量、混凝土保护层和钢筋锈蚀情况,分析和探讨了某办公楼混凝土开裂、钢筋锈蚀的成因.结果表明,冬季施工过多使用氯盐作添加剂,是导致混凝土开裂、钢筋锈蚀的主要原因.