Key relationship-based determinants of project performance in China

The aim of this paper is to investigate the relationship-based factors that affect performance of general building projects in China. Thirteen performance metrics that may be used to measure the success level of construction projects are defined and categorized into four groups namely cost, schedule, quality and relationship performance. Fourteen risks inherent in relationships and 16 tools expected to facilitate relationship building that may affect project success are identified. Data of different projects were collected in China via a self-administered postal survey. Multiple linear regression models are developed to help explain the variance in different performance metrics. It has been found that ten risks and nine tools have either positive or negative influence on project performance to some different extents and in different project development process stages. Detailed explanations are made, especially to those variables bearing unexpected signs. It is recommended that firms in the Chinese construction industry manage the relationship-based factors that are significant in the MLR models so as to achieve project success.     

Key determinants of performance of design-bid-build projects in Singapore

What are the factors affecting the performance of design-bid-build projects? Ten performance metrics and 60 factors are identified that project team members can use to measure and manage the success levels of construction projects in four broad categories: cost, time, quality and administrative burden. A survey and correlation analysis of 65 design-bid-build projects in Singapore is used to suggest the factors that affect each performance metric significantly. Contractor characteristics are the key determinants affecting the highest number of performance metrics. The most significant variable is the contractor's past record for completing projects on budget and to an acceptable level of quality. Based on this evidence, it is recommended that clients and consultants pay closer attention to a wider array of characteristics (not just the initial price) involving contractor selection. Another key determinant is the project character with the most important variable being the percentage of repetitive elements.     

建设工程进度管理的复杂系统设计

介绍了建设工程进度管理的复杂系统设计,指出在常规建设工程进度管理系统中,通过建立基础数据的知识库和植入智能Agent技术,可以令该系统灵活纳入多影响因数,并且在信息交流上统一、通畅、有效,能及时反映实际工程中的进度管理问题,使其逐步成为具有自主优化功能的复杂系统。     

施工项目进度控制

对施工进度管理体系建立过程中容易存在的问题进行了分析,并介绍了组织施工项目进度计划的实施应做好的工作,阐述了施工项目进度计划调整的步骤,分析了施工项目进度管理失控的原因,并提出了相应的对策,对于工程建设总目标的实现具有重要的意义。     

建设项目管理进度控制系统研究

在分析建设项目进度控制基本理论的基础上,对建设项目管理进度控制系统的构建和实施进行了探析,具体阐述了进度计划体系和进度目标的确定,进度计划的实施和检查及其调整改进等内容,以期指导实践。     

浅谈建筑施工界面进度网络模型

阐述了施工界面的定义,介绍了以施工界面为基础的进度网图模型,分析了建设项目主要界面问题,提出了施工界面进度网图模型的建立步骤,指出该模型可增加进度表的可读性及进度控制的效率。     

Intelligent monitoring and evaluation for the prefabricated construction schedule

The prefabricated building construction (PBC) project is sensitive to uncertainties due to the highly required coordination and interdependency among the installation activities, which may cause progress delay. Hence, it is necessary to monitor the installation progress and evaluate the schedule in terms of the project duration to take proactive control actions to avoid actual project delay. This study focuses on intelligent monitoring and evaluation for the PBC schedule by combining the computer vision-based (CVB) technology, a weighted kernel density estimation (WKDE) method, and the earned duration management (EDM) method. Intelligent and real-time far-field detection of the prefabricated components (PCs) and workers is achieved through the CVB technology, which is, respectively, used to measure the progress status of the PC installation works and other manual works by means of the WKDE method. The PBC project duration is then predicted based on the monitored progress status to evaluate the schedule through the EDM method. The proposed intelligent schedule monitoring and evaluation method have been illustrated and justified through a field application. This study contributes to achieving intelligent schedule monitoring and evaluation for the PBC project.     

谈建筑施工进度控制工作中的要点

为了加强对建筑施工进度控制工作的管理,对资金、技术、人为、现场管理等影响建筑施工进度的因素进行了分析,并探讨了加强进度控制的措施,从而使建筑施工工作在预计工期内有效开展。     

浅析施工阶段的进度控制

阐述了施工阶段进度控制的方法，分析了造成施工阶段进度拖延的原因，提出了监理工程师做好进度控制的措施，指出预控是完成施工阶段工程进度控制的重要手段。     

Incorporating rework into construction schedule analysis

Rework has been a primary cause of cost and schedule overruns in large construction projects. While several research efforts have analyzed the causes and effects of rework and provided guidelines to reduce rework, almost no research exists to analyze the impact of rework timing and quantity on schedule delays and to support decisions on cost effective recovery. This research presents a quantitative mechanism for schedule analysis considering rework. The mechanism has three aspects: (1) a new schedule representation of rework magnitude as negative percentage complete for affected activities, documented on the specific date on which the rework is detected; (2) a modified daily-windows delay analysis to apportion project delays among the responsible parties; and (3) an optimization technique for determining the least costly corrective action strategy that recovers project delays. The proposed approach is applied to a case study to demonstrate its ability to consider rework impact, in combination with other progress events by other project parties. This research offers an innovative quantitative approach to consider rework timing and amount in delay analysis and corrective action optimization.     

谈建筑工程施工进度管理

结合建筑工程施工进度管理的现状,对影响建筑工程施工进度的因素进行了分析,提出了加大组织力度、鼓励技术先行、完善管理制度、确保物资供应等建筑工程进度管理的措施,以如期实现进度目标,提高经济效益。     

浅谈工程项目施工进度控制

结合施工阶段进度控制的目标,探讨了我国工程建设过程中影响进度的因素,通过分析工程进度拖延的原因,提出了一些解决方案,并作了具体阐述,对于保障建设工程进度控制总目标的实现具有一定的指导作用.     

浅谈加强施工项目进度控制

基于施工项目进度控制是建筑施工管理的重中之重,对控制实施阶段施工单位应进行的控制工作进行了分析,介绍了项目进度计划的编制依据,探讨了施工进度网络计划的编制,从工期、资源、成本三方面对施工进度计划进行优化,从而降低施工成本,提高资源的效率。     

建筑工程施工进度的控制及管理

从施工人员、材料设备、施工环境等方面,分析了影响建筑工程施工进度的主要因素,并根据建筑工程施工进度的控制原理,阐述了实际工程进度的编制措施,从而确保项目的顺利完工。     

工程施工进度控制浅谈

阐述了施工进度控制的意义,通过分析影响工程进度的因素,介绍了进度控制的主要措施和主要任务,就如何建立动态管理体系,做好施工中进度的监测和调整进行了探讨,以确保工程建设进度目标的实现。     

P3软件在建筑工程施工进度控制中的应用研究

指出建筑工程施工进度控制是一个复杂的系统工程,运用项目管理软件--P3软件,对某建筑工程从其进度计划的编制及施工进展情况进行全过程动态控制,实践证明,运用P3软件可以有效的对建筑工程施工进度进行控制.     

Analysis of the impact of craft labour availability on North American construction project productivity and schedule performance

The North American construction industry has experienced periods of craft shortages for decades. While this problem has received significant attention from researchers, less attention has been given to quantifying the impact of availability of craft labour on project performance. The primary contribution of the current work to the body of knowledge is the quantification of the relationship between craft labour availability and project performance, as measured by project productivity and schedule. Data from 97 construction projects completed in the U.S. and Canada between 2001 and 2014 were collected from two industry databases. The primary analysis shows that projects that experienced craft shortages underwent substantial and statistically lower productivity compared to projects that did not. The analysis also shows a significant growth in schedule overrun due to the craft labour shortages among the same population of projects. Further exploration by means of several regression analyses shows a statistically significant correlation between increased craft recruiting difficulty and lower project productivity and also higher schedule overruns in both project databases. The results are confirmed across both databases and serve as informative models that provide valuable insight for project management teams to perceive the risk that lack of skills poses on project productivity and time performance. Understanding the level of impact that craft shortages are having through robust statistical analyses is a first step in developing the motivation for industry leaders, communities and construction stakeholders to address this challenge.     

Key performance indicators and assessment methods for infrastructure sustainability—a South African construction industry perspective

This paper identifies key performance indicators (KPI) for infrastructure delivery and maps computational methods required to achieve sustainability objectives in developing countries. It builds on previous research that developed taxonomy of infrastructure sustainability indicators and computational methods, to propose an analytical decision model and a structured methodology for sustainability appraisal in infrastructure projects in a developing country like South Africa. The paper uses the ‘weighted sum model’ technique in multi-criteria decision analysis (MCDA) and the ‘additive utility model’ in analytical hierarchical process (AHP) for multi-criteria decision-making, to develop the model for computing the sustainability index—a crisp value for evaluating infrastructure design proposals. It discusses the development of the KPIs that are encapsulated within the analytical model. It concludes by discussing other potential applications of the proposed model and methodology for process automation as part of integrated sustainability appraisal in infrastructure design and construction in developing countries.     

建筑物防水施工的要点

通过介绍防水工程出现的质量通病,从把好设计关、选择防水材料、材料检测、制定施工方案等方面提出了防水工程设计施工中应注意的有关事项,以提高防水工程质量。     

施工进度计划中施工持续时间的计算方法

施工企业为有序、高效地组织施工生产,实施在建项目的施工进度管理与控制,施工进度计划的编制应是先导。如何科学、客观地确定施工进度计划中各分部、分项工程的持续时间是施工进度计划具有合理性和可行性的保证。