Construction defect management using a telematic digital workbench

Real-time, rich-media data communication between the construction site and the off-site design office is becoming one of the important research areas in information technology for construction. This paper presents the concept of a telematic digital workbench, a horizontal tabletop user interface integrating mobile computing and wireless communication to facilitate synchronous construction site to office collaboration. We demonstrate the capabilities and potentials of this system concept for construction defect management. The on-site crew uses a handheld mobile device to collect defect information and transfers the information to the design office through wireless communication by sending the information to a database listener. The digital workbench application monitors the database and synchronizes the location of the visual information on the site with the 3D model on the server. Integrated with 3D viewing capability in a CAD system, designers can interact with the combined model/site data using a horizontal and vertical screen. A case study compared the telematic digital workbench against paper-based and Pocket PC-based methods for defect management in a controlled laboratory experiment. The case study results show that the telematic digital workbench has the potential to improve the accuracy of matching site data to digital data and reduce information loss between site and office collaboration.     

基于移动终端和既有信息系统的地铁工程施工现场物料管理系统

对工程项目物料管理模式进行了充分调研,针对地铁工程施工现场物料管理的特点、管理人员的需求,应用移动计算技术和物联网技术,建立了基于移动终端和既有信息系统的物料管理新模式。在此基础上,利用Android开发、二维码等新技术,开发了基于移动终端和既有信息系统的地铁工程施工现场物料管理系统——MMMS,并进行了试用。结果表明,该系统可用于提高施工现场物料管理水平,实现对地铁工程施工现场物料高效和实时的管理。     

移动计算在建筑工程信息管理中的应用研究

近些年来,信息技术(Information and Communication Technology)的发展,包括信息流动速度的增加,信息交流效率的提高,以及信息传递费用的降低,对于提高建筑工程领域的信息管理能力起到了很大的作用。目前施工现场办公室已经可以得到信息技术的支持,但施工现场仍然是以纸张为基础的信息交流模式,离“数字化工地”还有很大的距离。而移动计算(Mobile Computing)技术的发展,为施工现场信息管理的改进和信息处理能力的增强提供了极大的潜力,从而使“数字化工地”的实现成为可能。为了让建筑企业和相关领域的研究人员了解和接受这项技术,本文对移动计算的概念以及移动计算技术在建筑工程领域的应用进行了介绍,并且详细分析了移动计算技术在建筑工程领域应用的潜力、优势和所面临的挑战,最后对这一研究领域的发展趋势做出了合理的预见。     

Mobile Construction Supply Chain Management Using PDA and Bar Codes

Abstract:   Construction project control aims to effectively obtain real-time information and enhance dynamic control by utilizing information sharing and connecting involved participants of the projects to reduce construction conflicts and project delays. However, extending the construction project control system to job sites is not considered efficient because using notebooks in a harsh environment like a construction site is not particularly a conventional practice. Meanwhile, paper-based documents of the site processes are ineffective and cannot get the quick response from the office and project control center. Integrating promising information technologies such as personal digital assistants (PDA), bar code scanning, and data entry mechanisms, can be extremely useful in improving the effectiveness and convenience of information flow in construction supply chain control systems. Bar code scanning is appropriate for several construction applications, providing cost savings through increased speed and accuracy of data entry. This article demonstrates the effectiveness of a bar-code-enabled PDA application, called the mobile construction supply chain management (M-ConSCM) System, that responds efficiently and enhances the information flow between offices and sites in a construction supply chain environment. The advantage of the M-ConSCM system lies not only in improving the efficiency of work for on-site engineers, but also providing the Kanban-like visual control system for project participants to control the whole project. Moreover, this article presents a generic system architecture and its implementation.     

A framework for using mobile computing for information management on construction sites

The application of mobile computing in construction is becoming a major research theme in the domain of Information Technology in Construction. However, most research in this area focuses on a detailed aspect or single facet of a mobile computing technology. This paper introduces a framework for the implementation of mobile computing on construction sites, which comprises an application model and a technical model. The application model identifies the features of mobile computing, construction personnel, construction information, and construction sites, and explores the interactions that are likely to affect the implementation of mobile computing. The technological model generalizes mobile computing technologies and gives system designers a clear structure for designing mobile computing systems from a technical perspective. Finally, a case study of a real construction situation is used to validate this framework.     

基于标签技术的建筑施工安全管理移动终端设计与应用

对建筑施工现场安全管理模式进行充分调研,根据施工现场安全管理的特点及存在问题,应用区域管理理论和标签技术对施工现场安全管理模式进行优化。综合考虑射频识别（RFID）标签与二维码标签的性价比,结合施工现场实际情况和已有安全管理信息系统,设计并开发基于标签技术的建筑施工安全管理移动终端,并在武汉某建筑施工项目进行试用。用户反馈信息表明,该系统操作简便、实用性强,满足了建筑施工企业安全生产管理人员移动办公的需要,通过数据分析可全面掌握施工现场各区域安全状况,加强对高风险、多隐患区域的管理,有效减轻安全生产管理人员的工作负担,提高工作效率和安全管理水平     

BIM技术在施工现场中的轻量化移动端应用研究

针对公路建设中BIM模型体量大,缺乏设备媒介和载体展现三维可视化特性和信息传递能力,研究BIM技术应用现状和存在的问题。基于BIM技术和WebGL模型轻量化技术,以C/S架构模式实现服务器端资源存储和移动终端App调用的动态三维可视化辅助现场施工方案,规避了传统施工成果无法预演和水平不足的技术风险,为施工现场无纸化辅助施工提供了新的技术手段。     

Wireless networking in tunnelling projects

Emerging collaborative technologies and working methods often require tremendous engineering and organisational efforts for successful implementation of information and communication technologies (ICTs). According to a research conducted in Turkish construction industry, most of the problems that occur during the construction phase are due to lack of co-operation and communication between designers and contractors and lack of prompt expert decisions during on-site engineering. Similar to any major construction project, tunnelling project’s success is highly dependent on collaborative team work where communication and information exchange take place between project members. Distributed collaborative teamwork, as the case in most of the large scale construction projects as well as tunnelling projects, empowered by state of the art information and communication technology, promises more efficient work processes, reduced travelling needs, and increased opportunities for project communication. Following the fast development of mobile computing in recent years, many sectors have adopted mobile devices and wireless technologies enabling real-time information transfer thereby improving business processes. For some years, the feasibility of implementing wireless solutions to construction sites has been researched. Potentially, mobile and wireless technologies enable construction staff to be more flexible in terms of location and time. For better use of mobile collaboration in construction projects, mobile technologies and construction sector have to be examined in some detail to implant the most suitable technology for real-time information access and improved collaboration of distributed teams in construction. However, case studies in construction are very limited in number and scope. This paper discusses and proposes an implementation scenario of wireless networking in Marmaray; a multi-site tunnelling project in Istanbul. Benefits, possible problems and cost assessments are discussed.     

多媒体网络技术在施工现场管理中的新应用

针对施工现场管理的现状,阐述了施工现场管理实行全程电脑化的必然趋势,着重介绍了多媒体网络技术在施工现场管理中的新应用,阐明了施工现场管理中应用网络技术具有的重要意义。     

Implementing ‘Site BIM’: A case study of ICT innovation on a large hospital project

Numerous Building Information Modelling (BIM) tools are well established and potentially beneficial in certain uses. However, issues of adoption and implementation persist, particularly for on-site use of BIM tools in the construction phase. We describe an empirical case-study of the implementation of an innovative ‘Site BIM’ system on a major hospital construction project. The main contractor on the project developed BIM-enabled tools to allow site workers using mobile tablet personal computers to access design information and to capture work quality and progress data on-site. Accounts show that ‘Site BIM’, while judged to be successful and actively supporting users, was delivered through an exploratory and emergent development process of informal prototyping. Technical IT skills were adopted into the construction project through personal relationships and arrangements rather than formal processes. Implementation was driven by construction project employees rather than controlled centrally by the corporate IT function.     

Development of a mobile safety monitoring system for construction sites

In spite of efforts to reduce fatal accidents on construction sites, such accidents continue to occur. In particular, fall accidents constitute the majority of these accidents, and therefore appropriate managing measures are needed. In this study, a safety monitoring system was established at a site where fall accidents often occurred, with the aim of reducing the rate of fatal accidents on the construction site. The system consisted of a mobile sensing device for detecting the worker's approach, transmitter sets and repeaters for sending the detected information to a receiver, and exclusive software for interpreting this information. The system was applied to a real construction site and tested in order to verify its utility and efficiency. It is expected that the system will decrease the potential for fall accidents and increase the efficiency of safety management.     

关于房屋建筑工程质量监督管理的探讨

如何抓好建筑工程质量监督管理关系重大。笔者从事质量监督管理工作多年,从质量管理的任务、制度及现场监督等方面谈一谈对工程质量监督工作的看法,以供广大工程技术人员参考。     

石化企业ＶＯＣｓ排放政策要求及控制策略

结合永嘉县住房和城乡规划建设局的规划信息化工作,研究以“数字永嘉”地理信息公共平台(公众版)为中心,应用LBS、ArcGIS for iOS,ArcGIS Server,WebService等技术框架,设计并开发了基于移动GIS的永嘉县政务用图辅助决策系统。在整合永嘉县各类政务资源的基础上,充分运用移动互联网技术、地理信息技术、云计算等技术、实现政务信息资源的全方位管理。为政府部门宏观决策、规划管理、移动办公、招商引资、应对突发事件等提供清晰、可靠、科学的基础地理信息依据。     

Key knowledge factors in Thai construction practice

This research has mainly focused on the practice of knowledge management in Thai construction projects at the on-site work level. The main objective was to identify whether or not knowledge factors influence on-site execution of works. A combination of qualitative and quantitative approaches was employed. The focus group interview with 16 construction managers was conducted to gather in-depth information related to practice of project knowledge management. This data was used to develop the questionnaire to explore key knowledge factors. The questionnaire was sent to 103 participants in 70 construction projects in Thailand. The survey data were analyzed by factor analytic techniques to identify key knowledge factors influencing on-site construction works. The findings showed that there were six key knowledge factors: (1) visionary leadership, (2) reward or incentive, (3) collaboration, (4) trust, (5) information technology, and (6) individual competency or skills.     

Mass Concrete Curing Management Based on Ubiquitous Computing

Abstract:  With the spread of networking and computing technologies, ubiquitous computing is a concept attracting increasing attention in industrial development and innovation. In this study, a mass concrete curing management system (CMS) is introduced to investigate the possibility of applying ubiquitous computing to jobsite project execution. The proposed CMS consists of three parts—wireless data acquisition, strength estimation, and an alarm. A case study is performed to validate the CMS in the mat foundation of a high-rise building construction. This system will allow the project engineers or managers to make timely decisions about the cooling operation of the pipe cooling system, which removes hydration heat from the concrete with embedded cooling pipes in the structure, and about the timing of formwork stripping. This suggests that the productivity and efficiency of construction management can be improved by adopting a ubiquitous computing environment in construction.     

基于移动计算的地理信息系统的发展研究及应用前景

基于移动计算的地理信息系统的发展,进一步推动了我国各个产业朝向科学化与数字化发展。本文简要介绍了地理信息系统,并介绍了其中的移动计算技术,最后讨论了基于移动计算的地理信息系统的应用前景。     

Application of 4D visualization technology for safety management in metro construction

Safety accidents occur frequently in underground metro construction due to its complexity. These accidents cause huge losses because most metro construction is located in the center of very congested cities. Therefore, safety management is a priority in the metro construction industry. This paper proposes an approach for safety management using visualization technology. Safety is integrated with the construction management process throughout the project life cycle. Information from the design phase about construction components and scheduling has been gathered to formulate a 4 dimensional (4D) model. Before construction begins, a rule-based tool analyzes this combined information, automatically detects potentially unsafe activities and conditions and provides instructions for correction. More importantly, actual site monitoring data are continuously compared to the 4D model during the construction process. Therefore, the safety status of related components can be continuously visualized in the system as conditions change and potential safety risks evolve. This paper presents a prototype which was developed and verified with a case study of a real project. The results show that the proposed approach can be a tool of collaboration, virtual analysis and prediction for designers, site project managers, safety engineers and other participants. With real-time safety status visualized, it can detect safety risks before and during the construction process and then provide preventive measures. Thus, timely decisions can be made to avoid accidents. This contributes to the success of safety management in the metro construction industry.     

基于DOM、DEM的闲置土地管理模式探讨

以南京市江宁区闲置土地管理信息系统为例,介绍了基于DOM、DEM等数据的闲置土地管理信息系统建设方法.本文探讨了闲置土地管理的新模式,在DOM、DEM、DLG数据基础上,综合利用计算机、3D技术等,将闲置土地范围线、现场闲置照片、拍摄的视频以及闲置土地台账等信息结合在一起,实现闲置土地的动态全方位管理.     

建筑工程施工技术及其现场施工管理分析

本文从建筑工程的施工技术和现场施工管理两个方面入手,探讨了目前建筑领域常见的几种施工技术,并提出了几点加强现场施工管理的经验,旨在为实际的现场施工管理工作提供科学、高效的理论参考。