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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。 相似文献
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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. 相似文献
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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. 相似文献
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《Energy and Buildings》2002,34(3):279-289
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.
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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。 相似文献
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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. 相似文献
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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。 相似文献
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某大厦冷热源技术经济分析比较 总被引:3,自引:0,他引:3
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。 相似文献
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综合客运枢纽客流引导标识设计要点分析 总被引:3,自引:0,他引:3
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。 相似文献
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某办公楼空调系统故障分析及调试 总被引:1,自引:0,他引:1
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。 相似文献
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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。 相似文献
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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。 相似文献
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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。 相似文献
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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. 相似文献