纤维增强脱硫石膏空心大板在装配式建筑体系中的应用

介绍了利用脱硫建筑石膏生产纤维增强脱硫石膏空心大板的技术路线、产品特点与技术优势,采用1∶1全尺寸实验楼及示范工程的建筑结构研究成果,逐步完善纤维增强脱硫石膏空心大板在装配式建筑体系中的应用技术,为进一步推广应用提供依据。     

玻璃纤维筋在围护结构中的应用

通过玻璃纤维筋在地铁盾构始发井围护结构中施工的应用,介绍了利用盾构机对围护结构直接进行切割,从而保证了盾构机顺利始发,实现了节约成本,缩短工期,提高工程经济效益的目的.     

绿色建筑系统的综合绩效评价

在综合分析绿色建筑的特点以及绩效评价内涵的基础上,构建了较为全面的综合绩效评价指标体系,采取改进的模糊综合评价方法对指标进行量化处理,并以杭州市绿色建筑实例进行了实证分析。     

Thermal performance of a cool-pool system for passive cooling of a non-conditioned building

The thermal performance of a cool-pool system for passive cooling of a non-conditioned building is presented. The system consists of a water pond over the roof which is shaded in such a way that incident solar radiation does not reach the roof surface and the pond loses heat by convection and evaporation to its surroundings. Using periodic analysis, explicit expressions have been obtained for various performance parameters, namely room air temperature and water temperature and the amount of water evaporated from the system. Numerical calculations carried out for a typical day at New Delhi (28.6°N) show that the cool-pool system is more effective than the conventional evaporative cooling techniques such as water film and roof pond; the system also consumes less water in comparison with other evaporative cooling techniques.     

Thermal performance of a mobile home with light envelope

The present work analyzes, through in situ measurements, the environmental parameters of a mobile home (camper type van) characterized by a light envelope, located in Southern Italy. Through dynamic simulation, using EnergyPlus software, a few strategies to improve the inside conditions are then proposed and verified. The solution that best improves the indoor microclimate is forced ventilation combined with shading providing by simple roofing. Three envelope solutions were also analyzed: a low thermal mass (polyurethane foam), a high thermal mass (phase change material, PCM), and a medium thermal mass (mixture of polyurethane foam and PCM) solution. The material that improves the inside conditions appears to be the high thermal mass solution (pure PCM), while the mixture of polyurethane and PCM has a performance similar to that of pure polyurethane.     

某厂房预制SP板原位性能检验

本文通过工程实例介绍预制构件现场检验的特点和方法。     

装配式建筑对城市发展的影响评价

根据目前装配式建筑的发展现状,采用PSR模型建立相关指标体系,通过物元评价模型进行评价,对装配式建筑对城市发展的影响进行定量评价,为装配式建筑更好的发展提供理论和实践基础。     

基于FAHP-EWM的装配式建筑施工安全评价

施工安全评价是装配式建筑可持续发展的关键环节。本文旨在构建一个装配式建筑施工安全评价模型。分析了装配式建筑施工安全评价体系,综合层次分析法（AHP）和熵权法（EWM）的优势,形成组合权重方法。引入了模糊综合评价法（FCE）进行安全水平评价。对XC装配式建筑项目进行实证研究,验证了评价方法的有效性。     

闽南传统建筑外围护结构隔热性能研究

闽南地区属于夏热冬暖地区,夏季漫长,太阳高度角较大,辐射强烈。在漫长的历史中,闽南系传统民居对避风、防风的诸多考虑,反映在在房屋建造的各个方面。本文对此进行分析研究。     

装配式建筑监管指标体系有效性评价

在《基于政策文本分析的装配式建筑监管指标初探》一文中,建立了一套针对各地区政策达成情况和装配式建筑发展水平的监管指标体系。但是,上述装配式建筑监管指标体系的有效性尚未得到验证。为此采用独立性、全面性、简约性、科学性、层次性等5个评判指标,利用模糊综合评判法建立了有效性评判矩阵,并代入专家打分数据,最后得出模糊综合评判结果,实现了该套装配式监管指标体系有效性的评判。     

装配式钢质塑性可控铰抗震性能试验研究

装配式混凝土结构节点及其连接是抗震薄弱环节,有必要发展高性能的节点及其连接形式,为此,提出一种装配式塑性可控、可更换部件的钢质塑性可控铰连接节点,并对该节点关键耗能部件——钢质塑性可控铰进行低周往复荷载试验,考察其弯矩-转角滞回曲线、骨架曲线、承载能力、转动刚度、破坏模式、延性、能量耗散能力等抗震性能,研究翼缘核心板开...     

建筑围护结构热湿性能模拟软件开发

建筑围护结构内的季节性湿传递是围护结构湿损坏的重要影响因素,为简单快速地评估建筑围护结构的热湿性能,基于瞬态耦合传热传湿理论开发了围护结构热湿性能模拟软件.该软件可以进行动态室内外环境参数下的围护结构热、湿特性分析,为结构工程师提供了方便快捷的判断多层墙体内可能出现冷凝的方法,从而选择合适的防护措施.并结合工程实例说明了其应用.     

Automated design of prefabricated building

The paper describes a knowledge-based system for the detailed design of prefabricated building. The system employs a comprehensive approach which integrates different design aspects, architectural, structural and technological. The system receives, as an input, a preliminary architectural design of the building to be erected, adjusts it to a modular grid, indicates the location of structured supports, breaks down the floors and walls into elements to be prefabricated and finally produces detailed drawings of the elements and their cost estimate. The premise of the system, its operation and the structure of its knowledge are described.     

张家口市住宅围护结构热工性能及能耗分析

根据张家口市气象资料，对该市住宅围护结构(墙体和屋顶)几种常用构造的热工性能、能耗等作了分析比较，建议墙体采用空心砖并作外保温处理，在保温的同时应兼顾夏季隔热，并应严格控制窗墙面积比，加强门窗的气密性。     

Hysteresis effects on the thermal performance of building envelope PCM-walls

This work presents a numerical study of the combined effects of the hysteresis temperature difference, peak melting temperature, and thickness of a building envelope PCM-wall on its thermal performance in air-conditioning and non-air-conditioning conditions. The study was carried out considering complete melting-freezing daily cycles of the PCM in a climate exhibiting both hot and cold thermal discomfort. A time-dependent one-dimensional heat conduction code, which uses the effective specific heat method to simulate the heat transfer through the PCM was developed. Insights into the effects of the hysteresis phenomenon were obtained; it was found that hysteresis improves the thermal performance of PCM-walls. The higher the hysteresis temperature difference the better the thermal performance, but there is a limit in the improvement of the thermal performance, which is achieved when the entire phase change process takes place at temperatures outside of the thermal comfort zone. Maximum improvements from 4% to 29% for air-conditioning and from 4% to 30% for non-air-conditioning, for a BioPCM wall with thicknesses from 6 mm to 18 mm, were found. Suggested criteria to achieve the maximum possible thermal performance of PCM-walls given a thickness and use condition were obtained. This work proposes the basis of a methodology to optimize simultaneously any pair of variables of a PCM-wall for different use conditions (AC, nAC, or a combined use of AC and nAC).     

探讨塑料窗在高层建筑围护结构中的作用

高层建筑大量采用按照一般制作方法制作的超大型塑料窗,在使用过程中常常发生杆件颤抖变形,在水平风荷载作用下这种颤抖变形更为突出,非常不安全,给许多房屋购买者或居住者带来困惑、没有安全感,完全忽视了窗型过大所承担的围护结构作用。本文通过案例分析,计算高层建筑的窗杆件的挠度变形,强调塑料窗在高层建筑使用过程不能只注重采光效果和节约成本,更重要是注重塑料窗的使用安全及在围护结构中的作用。     

Structural performance evaluation of a precast prefabricated bridge column under vehicle impact loading

In this study, the numerical analysis method was proposed to analyse the structural behaviour of bridge columns under various impact loading conditions. A parametric study of vehicle impact simulation was carried out to determine the impact loading-time functions. According to the impact simulation results, five-point piecewise linear approximation is proposed and validated. The proposed loading function was applied to the material nonlinear finite element analyses of two different types of bridge piers, the cast-in-place reinforced concrete bridge columns and the prefabricated bridge columns, which were designed under the same loading conditions. The dynamic performances of the considered bridge piers are compared using the results of dynamic numerical analyses. Also, the static design loadings of a vehicle crash defined in the Korean bridge design code and AASHTO LRFD Bridge Design Specifications were applied to analyse the results of the dynamic analyses of the piers.     

基于云模型的装配式混凝土建筑施工质量综合评价

为了推动建筑工业化的发展,提高装配式建筑的整体施工水平,通过对国家、行业规范及现场施工要点进行概括,从施工前、施工中、施工后3个方面总结了31个指标,构建了全面的施工质量综合评价体系,并运用C-OWA算子对指标进行赋权,提出了基于云模型的装配式混凝土建筑施工质量综合评价方法,实现了定性指标与定量评价的转换,弱化了评价的模糊性和随意性。最后,结合案例分析,使用MATLAB软件求得相似度并用云图表示出来,结果表明该项目的施工质量为"一般"。     

Experimental assessment of the seismic performance of a prefabricated concrete structural wall system

In this study the authors investigated experimentally the behaviour of prefabricated reinforced concrete sandwich panels (RCSPs) under simulated seismic loading through a large experimental campaign. Tests were carried out on single full-scale panels with or without openings, simulating the behaviour of lateral resisting cantilever and fixed-end walls. Tests were also carried out on a 2-storey full-scale H-shaped structure constructed by individual panels which were properly joined together. The performance and failure mode of all panels tested revealed strong coupling between flexure and shear due to the squat-type geometry of the panels. However due to their well-detailed reinforcement, all panels exhibited only a relatively gradual strength and stiffness degradation and in no case did any panel suffer from sudden shear failure. The prefabricated walls of the structural system investigated herein seem to meet all the requirements of Eurocode 8 for walls to be designed as “large lightly reinforced walls”; however this assumption should be supported with further experimental and analytical studies.     

装配式人工消能塑性铰节点抗震性能试验研究

为提高装配式钢筋混凝土(RC)框架结构的抗震性能,降低梁、柱构件震后损伤程度,提出了人工消能塑性铰(artificial dissipated plastic hinge,ADPH)节点,即在梁端通过预埋机械铰实现梁、柱构件铰接,同时安装附加钢板承载并耗能.试验中设计并制作了 2个不同形式的ADPH节点和1个现浇RC节...