Decision support for tower crane selection with building information models and genetic algorithms

Tower cranes are major construction equipment that is highly demanded in construction projects. The planning process for tower cranes utilization starts in early stages of the construction projects. Poor selection could incur extra costs on the construction projects or cause delays in project duration. The planning procedures for tower cranes include selection, allocation and operation. This paper presents a framework for the selection of tower cranes types and locations at construction sites. The framework considers three main models: 1) decision making model to select the tower crane type, 2) optimization model for the selection of the ideal number and location of tower cranes, and 3) 4D simulation model to simulate tower crane operations. Several clash detection scenarios are presented to assure the safety operation of the tower crane group. A case study is shown herein to demonstrate the capabilities of the developed framework.     

信息化管理在建筑施工项目中的应用

从经济效益、技术手段和工程应用上对建筑施工项目信息化管理的巨大优势作了阐述，并总结了建立高质量的建筑施工项目信息化管理系统的一般步骤。     

浅谈在建筑工程施工进程中的质量控制

针对建筑工程质量控制的重要性,阐述了影响工程质量因素的控制措施,探讨了建筑工程施工过程的质量控制,提出了工程质量的预控措施,以加强建筑工程施工进程中的质量控制工作。     

基于建筑信息模型的施工流程优化研究

针对咸阳青年创业园项目,基于建筑信息模型的可视化效果,进行施工流程优化研究,降低信息传递过程中的衰减,研究基于BIM技术的4D项目管理信息系统在大型复杂工程施工过程中的应用,实现对建筑工程有效的可视化管理等,使整个工程的质量和效率显著提高,降低成本,提升效益。     

论建设工程施工项目管理

深入探讨了建设工程施工项目管理,提出了施工项目管理的两个层次,即思想性方法和技术性方法,从组织机构管理、质量管理、成本管理、安全生产与文明施工管理等方面进行了阐述,积累了工程施工项目管理经验。     

建筑工程施工项目成本控制

分析了项目成本控制的基本原则,从工程投标阶段、施工前准备阶段、施工阶段、竣工验收阶段等几个阶段介绍了项目成本控制的内容和方法,指出工程项目成本控制水平是企业效益评价的关键,是提高企业管理水平、降低企业经营风险的重要途径。     

项目信息门户构建和应用过程的思考探讨

分析了工程建设信息的特点,针对我国当前信息管理方面存在的问题,从提升信息管理观念与强化信息管理组织建设两方面,提出了工程建设改进信息管理的若干思路和做法,以期为强化工程建设信息管理提供借鉴。     

Planning gang formwork operations for building construction using simulations

Concrete formwork is a labor-intensive and time-consuming operation. Many modular formwork systems have been developed to automate the process. Such systems improve the productivity as well as the cost-effectiveness of the operation. However, proper planning for the form reuse schemes in the design as well as the construction phases of a building, including resource allocations (modular form sets, cranes, workers, etc.), and the construction sequence, is vital for ensuring a successful use of modular formwork systems. Computer process simulation techniques are employed in this research for the study of different form reuse schemes to use gang forming systems in building construction. Five form reuse schemes are identified. The CYCLONE modeling methodology is employed to develop computer models for each of them. MicroCYCLONE simulations and sensitivity analyses of the schemes, using different numbers of form sets, cranes, and labor crews, are then conducted for a real case to assess their impact on the productivity as well as the cost-effectiveness of the operation. The objective is to better understand the characteristics of different form reuse schemes and, in turn, to produce better plans for gang forming construction. Thus, the application of modular formwork systems in building construction can be facilitated.     

Developing a decision support system for building project procurement

The growing need for improved construction procurement and managerial systems, point to the usefulness of a knowledge-based advisory system to help optimise such decisions, amidst the multiplicity of project variables. This new system would harness lessons learnt from past and present research and practice. A Hong Kong based study on a sample of different building projects and professionals, has yielded ‘knowledge’ that has been analysed and structured into pilot/sample core modules of a proposed knowledge-based decision support system. Results from statistical analysis of the data and an Artificial Neural Network model confirmed the value of the proposed system. An extended study to gather more data/knowledge is recommended to further develop the proposed system, using the methodology presented in this paper.     

Special conditions for time scheduling of building modernization process

The special conditions to be considered in the project management of modernizing existing buildings is discussed. Using the flow line principle for the time scheduling of this process, the traditional methods used in new building projects are not, in themselves, sufficient. One needs to consider minimizing the disruption of the use of the building, the spatial and temporal concentration of modernization tasks, the continuity of modernizaation process in each functional section, the nonrhythmical sequence of some partial processes, the discontinuous resource allocution and the uncertainty of the duration of several activities.     

建筑施工项目管理论析

阐述了建筑施工项目管理的基本内容,并针对目前建筑施工项目管理存在的问题,从进度、成本和质量管理上探讨了建筑施工项目管理的科学化流程,以指导实践。     

信息不对称与工程项目建设

介绍了信息不对称的相关理论,并分析了工程项目建设过程中业主与承包商之间的信息不对称现象,提出在工程实际中通过信息甄别、信号传递和激励机制等手段以消除由于信息不对称导致的逆向选择和道德风险,具有一定的理论价值和实际操作意义.     

Integrating building information modelling with sustainability to design building projects at the conceptual stage

Lately the construction industry has become more interested in designing and constructing environmentally friendly buildings (e.g. sustainable buildings) that can provide both high performance and monetary savings. In general, sustainability integrates the following three related components: (1) environmental, (2) economic, (3) social well-being. Incorporating these components at the conceptual stage is achieved by using sustainable design, through which designers must identify associated materials and systems based on any selected certification (rating) system. The use of building information modelling (BIM) concepts helps engineers design digital models that allow owners to visualize the building before the physical implementation takes place. To apply BIM concepts, designers use tools to create 3D models of buildings where the design materials and systems are selected from the built-in database of these tools. Designers will not be able to quantify the environmental impacts of these materials to support the decisions needed to design sustainable buildings due to the following reasons: (1) a lack of information about the sustainable materials that are stored in the database, (2) a lack of interoperability between the design and analysis tools that enable full life cycle assessments (LCAs) of buildings. This paper presents a methodology that integrates BIM and LCA tools with a database for designing sustainable building projects. The methodology describes the development and implementation of a model that incorporates a database in which information about sustainable materials is stored and linked to a BIM (3D) module along with an LCA module and a certification and cost module. The goal of this model is to simplify the process of creating sustainable designs and to evaluate the environmental impacts (EI) of newly designed buildings at the conceptual stage of their life. An actual building project is presented in order to illustrate the usefulness and capabilities of the developed model.     

Managing complex project process models with a process architecture framework

Especially in large, complex projects, various aspects of process (activity network) information reside in separate models and diagrams that can become unsynchronized over time. Prior research has introduced the concept of a process architecture framework (PAF), which provides a solution by tying all the models and diagrams together in a single, rich process model with many views, where each view presents a subset of model information. This paper advances that work by (1) proposing an expandable PAF structure that organizes 27 + new and existing views, (2) suggesting examples of three new views that align well with specific concerns of users, and (3) presenting insights to guide the development of new views. Thus, this paper takes further steps towards the development of a PAF that provides at once both simplicity and completeness for project managers and other users of process models and project management information systems.     

建筑施工过程中的工程价款结算

工程价款结算是指承包商在工程实施过程中,依据承包合同中付款条款的规定和已经完成的工程量,按照规定的程序向业主收取工程价款的一项经济活动。在现行《建设工程工程量情况计价规范》中对于工程价款结算做了详细规定,本文就建筑施工过程中的工程价款结算做一解析。     

Mobile ICT support for construction process improvement

This paper brings together the visions for information and communications technologies (ICT) in construction and the changing requirements of the construction industry. Drawing on case studies, previous research and future scenarios outlined by research road mapping projects, it illustrates how the areas identified as having potential for improvement can be addressed through the use of mobile IT. This vision is then developed into a scenario for communicating to industry professionals the construction site of the future. Their feedback on this scenario is used to assess the viability of the research propositions within mainstream construction. Finally, the paper examines the implications for the construction industry should the vision for the future be adopted; the potential for new islands of automation; the effects on our human resources; and the potential impact on knowledge management initiatives.     

谈建筑施工项目管理

对建筑施工项目管理工作进行了探讨,分别对项目经理人选、技术管理、质量安全管理、材料管理等方面工作重点进行了分析,并针对性地提出了一些管理措施,以期实现项目管理工作的规范化、科学化。     

如何加强建设项目的工程造价管理

根据建设项目的全过程造价控制，从决策阶段、设计阶段、招投标阶段、施工阶段、竣工阶段介绍了加强建设项目的工程造价管理措施，使人力、物力、财力得到充分利用，取得良好效益。     

浅谈建筑施工企业的项目管理

分析了建筑施工企业项目管理的目的,针对工程项目管理的实际,阐述了工程项目管理的主要内容以及加强项目管理的重要途径,以规范施工项目管理的组织、方法和行为,从而提高建筑企业自身的经济效益.     

唐山市在建筑节能工程建设过程中取得的经验

分析了我国建筑节能工程开展及发展缓慢的原因,阐述了唐山市建筑节能工程发展成果,提出了我国节能建筑应加大建设力度的几个方面,以积累建筑节能经验,促进建筑节能的发展。