A decision support system for the selection of curtain wall systems at the design development stage

In high rise building construction projects, curtain wall is one of the most widely used exterior finishing components and has a major influence on the overall building operational costs and efficiency in terms of CO₂ emissions. The selection of curtain wall systems involves numerous technical, environmental and economic factors, and impacts on all project stages from concept design, through manufacture to installation and operation. The current way this important decision is being made in the business process, and its simplification, are two important issues that are still unexplored in the literature. After investigating the drawbacks of the current business process using a retrospective case study and an industrial survey, a decision support system (DSS), which consists of a process framework and an integrated relational database as a central repository for the main curtain wall systems and their engineering parameters, is proposed as a potential solution. The DSS developed not only enables the resolution of the main issue of the selection of curtain wall systems at the early design development stage but it also helps specifiers identify multiple technical and commercial options that could be presented to clients in real time.     

A group decision support system for implementing value management methodology in construction briefing

This paper describes a group decision support system (GDSS) developed in response to the need of a computer supported collaborative work environment for implementing the value management (VM) methodology in construction briefing. The GDSS is based on the VM methodology that allows a client to define and represent his or her requirements with functions and functional performance, to bring forward ideas to achieve the functions, and finally to evaluate and highlight the ideas against the functional performance for further development in design. The conceptual framework, design, implementation, use of the GDSS are addressed and described in that order. The system is complementally evaluated through a field study and an experimental study. It is concluded that the GDSS can effectively facilitate the implementation of VM in construction briefing. In addition, the GDSS has big potential to improve the performance of VM studies in terms of the enhanced participation and interaction, the shortened time for tasks, and the improved satisfaction with VM workshops. Research limitations and knowledge contribution of this study are also discussed.     

大模板施工体系在高层建筑中的应用

结合某高层住宅楼施工中成功运用大模板施工体系的范例，介绍和总结了大模板施工的技术要点和相应的质量保证措施，通过对其观感、施工速度和经济效益的分析，取得了较好的施工效果。     

Systematic rehabilitation planning: a new decision support system for targeted morphological river restoration

Working with decision support systems (DSS) in the water management sector often requires well‐grounded knowledge and an expensive data collection. This paper presents a new approach with regard to the identification of adequate hydromorphological measures taking especially the land availability and the local restrictions of the planned stream sections into consideration. It is intended for people with no broad water management background dealing with the planning, realization or permission of measures for water bodies. The essential module is an easy kept questionnaire for the derivation of measures. It leads the user through a logical sequence of questions resulting in target‐aimed measures, visualized by pictograms. This tool is also suitable for documentation purposes.     

某超高层建筑场地地震设计反应谱研究

场地地震设计反应谱是超高层结构抗震设计的重要依据,关系着结构设计的安全性和成本。结合某超高层设计案例,分析了不同超越概率对场地地震设计反应谱和水平加速度峰值的地震危险性概率贡献分布的影响,比较了场地地震设计反应谱与天然波平均反应谱的取值,验证了场地地震设计反应谱的可靠性。结果表明,对于超高层结构的抗震设计除考虑近场地震影响外,还应考虑远场大震影响,利用本文所述方法获得的天然波反应谱可用于结构抗震设计验算并能提高结构设计安全性。     

浅谈综合交通运输规划决策支持系统

介绍了综合交通运输规划的过程和步骤,提出了综合交通运输规划决策支持系统的概念及模型结构,同时进行了决策支持系统的功能需求分析,最后介绍了该系统研究的总体思路,具有较高的参考价值。     

超高层建筑三维风致响应时程分析

进行了某复杂体形超高层建筑顺风向、横风向及扭转风致振动时程分析,用每层质量集中于楼板并视之为刚片的高层建筑层间结构模型代替精细有限元模型。计算结果显示结构位移响应以1阶模态响应为主,该模型代替精确有限元模型能够满足工程计算需要;对于质量中心和刚度中心重合的结构,扭转加速度响应在合加速度响应中占有的比例较小。     

高层建筑地基基础工程设计中几个问题的探讨

对高层建筑地基基础工程设计中值得注意的几个问题，从主动土压力计算、土层锚杆强度的计算、水压力的计算以及主楼与裙房之间基础处理等四个方面问题进行分析，提出较为合理的设计方法。     

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 combined tuned damper and an optimal design method for wind‐induced vibration control for super tall buildings

The wind‐induced vibrations of super tall buildings become excessive due to strong wind loads, super building height and high flexibility. Tuned mass dampers (TMDs) and tuned liquid column dampers (TLCDs) have been widely used to control vibrations for actual super tall buildings for decades. To fully use both the economic advantage of the TLCD system and the high efficiency of the TMD system, an innovative supplemental damping system including both TLCD and TMD and called combined tuned damper (CTD), which can substantially decrease the cost of the damper, was proposed to control the wind‐induced vibrations of tall buildings. The governing equations are generated for the motion of both the primary structure and the CTD and solved to anticipate the dynamic response of the CTD‐structure system. Moreover, an optimal design method of human comfort performance is proposed, in which the life cycle cost of the damper‐structure system is considered as the quantitative index of the performance. The life cycle cost includes the initial cost, the maintenance cost and the failure cost. The failure cost can be calculated using the vibration‐sensation rate model, which is based on the Japanese code AIJES‐V001‐2004. Copyright © 2016 John Wiley & Sons, Ltd.     

高层建筑结构设计中的几点问题

根据新抗震规范和新高规中有关结构设计的规定，结合计算软件的分析，对高层建筑结构设计中的问题进行了探讨，以完善高层建筑的结构设计。     

高层建筑结构抗震计算方法探讨

详细阐述了高层建筑结构抗震计算方法,并就一些计算方法进行了探讨,通过上述探讨,可为工程设计人员就高层建筑结构的抗震设计积累经验,从而完善高层建筑的结构设计。     

Wind‐induced torsion vibration of the super high‐rise building of Shenzhen Energy Center

The synchronous multipoint scanning system technique in wind tunnel tests and random vibration theory method were used to analyze the wind‐induced torsion vibration of some irregularly shaped super high‐rise buildings in downtowns. The torsion vibration modes and the spectra of torsion wind load were studied, and the proportions of mean wind torsion, inertia torsion and the mass eccentricity torsion caused by horizontal inertia forces are discussed. The following conclusions can be drawn. First, the third and fourth modes have torsion vibration shapes, and their frequencies are in the high‐energy area of the spectra of the torsion wind load; the third and fourth modes are included in the resonant component of the spectra of the top torsion angle of the building, and the third mode is dominant. Second, the torsion stiffness is weak in the high stories of the building, so the inertia torsion is dominant, whereas the torsion stiffness is strong in the low stories; the mean wind torsion is dominant. The proportion of the mass eccentricity torsion moment caused by horizontal inertia forces is small. Finally, the wind‐induced torsion moment at a 90° wind angle is the largest, whereas the torsion eccentricity is 46% of the radius of gyration and is much greater than the mass eccentricity; thus, the wind‐induced torsion should be considered. The wind‐induced torsion vibration of the building is sensitive to wind directions. Copyright © 2011 John Wiley & Sons, Ltd.     

Lifecycle assessment for sustainable design options of a commercial building in Shanghai

Buildings are long-lasting products which have huge impacts on the environment during their whole lives. The design of buildings should take into consideration long-term environmental and economic benefits. A life cycle assessment approach is developed and demonstrated in a case study—the strategic design of a Flagship Store in Shanghai. Industrial practitioners were invited to the feasibility study. Their opinions were included in the life cycle assessment for the first time. The economic analysis takes account of not only the capital costs of the design options but also the running costs during the building's economic life cycle. The methodology adopted is an integrated life cycle assessment process including life cycle costing, multi-criteria decision making and group decision making methods. The workshops are successful in terms of educational opportunity for the practitioners and have obtained good feedbacks. The top 10 sustainable design options after the life cycle assessment process were chosen by the practitioners as the compulsory design strategies in their global environmental development agenda, whilst the other 32 design options as optional design solution for the international retailer's future stores. The life cycle assessment tool demonstrated by a case study was proven to be a simple and efficient design tool in practice, and therefore it can be adopted in other projects to assist the decision makers.     

浅谈超高层写字楼供配电系统设计

通过超高层写字楼设计的实例,从负荷等级及容量、变电所设计选址、供配电系统、谐波抑制、自备应急电源选型、消防泵房配电、电缆及导线的选用原则等方面,介绍了新建超高层写字楼的供配电系统设计。     

A wireless structural monitoring system with embedded damage algorithms and decision support system

A wireless structural monitoring system was designed and built to accommodate multiple sensors and provide alerts through a decision support system. In this paper we describe the main features of the system and present the results of its application to a laboratory test. The test was a quarter scale four-span three-pier bridge subjected to gradually increasing earthquake motion with white noise excitations between the strong motions conducted at the University of Nevada, Reno. Autoregressive (AR) models were used to characterise the signals collected from the test and damage was identified through Gaussian mixture models. Damage was quantified using the Mahalanobis distance between undamaged and various damage states of the bridge. The experiment provided a proof of concept for the wireless system and its multitude of features. The analysis of the data demonstrated that the algorithm is capable of identifying the progression of damage and showed good agreement between the measured and observed damage states.     

高大砼模板工程及支撑体系应用技术

南京航空航天大学将军路校区东区北2号教学科研楼工程两侧房屋的连廊构架总高度为20.5m,混凝土大梁的跨度为30m,截面尺寸为500×1800,梁顶标高20.50m,支模高度为19.6m,通过高大模板排架支撑体系的方案优化及控制,采用了合理有序的施工工艺,保证了高支模排架的安全,并确保了混凝土施工质量。     

A regulation evaluation system: a decision support system for the Building Code of Australia

Building regulations have historically been developed and drafted relying on groups of experts and their particular perceptions of what was an acceptable level of risk and what costs can be afforded by the community for improved health, safety or amenity. New technology, particularly in the areas of building design and material sciences, and the development of performance-based standards and codes are demanding major changes to the way in which regulations are developed and how they are assessed to ensure that any changes are in the community's interest. The regulation evaluation system described here provides a computer-based framework on which proposed changes to the Building Code of Australia (BCA) may be systematically assessed. The system requires any proposal to amend the BCA to be clearly identified together with all alternatives which achieve the desired objective. Direct costs and benefits are identified and quantified, making use of internal and external data. Where there is inefficient data, stochastic modelling is employed. The system not only aids decision makers by providing all available information, it also provides a transparency to the decision making and regulation development process.     

福州某超高层办公大楼双冷源温度湿度独立控制空调设计

介绍了福州市某超高层办公建筑的双冷源温度湿度独立控制空调系统的设计。通过分析本项目的空调需求,阐述了采用双冷源空调系统的原因,同时计算了新风采用冷却除湿方式在过渡季对室内温度的影响。介绍了双冷源空调系统的配置,以及室内空调的设计计算过程。总结了采用双冷源空调系统的优点,并估算了制冷季运行节能量。     

简析高层建筑防火技术要点

本文主要讲述了高层建筑发生火灾特点,以及就高层建筑防火设计要点进行了分析。