限额设计中的可施工性研究

简单介绍了可施工性及限额设计的概念,探讨了如何在限额设计过程中分阶段考虑项目的可施工性,明确了项目可施工性研究的效果和意义,并给出了在限额设计中开展可施工性研究的几点建议,以提高经济效益和工作效率。     

建设项目设计的可施工性研究

传统的建设模式从建筑生产专业化角度出发,要求设计与施工分离,但由此使得设计对可施工性方面的考虑甚少,常常使施工图纸无法施工,轻则导致设计变更、延误工期,重则造成整个方案重新调整。因此开展建设项目设计的可施工性研究,加强设计与施工间的交流,将施工中累积的知识与经验尽早反馈到设计中,就能有效地解决设计中存在的不可施工性问题,从而提高建设项目的整体效益。     

超高泵送机制砂混凝土的应用试验研究

为满足阿蓬江大桥的主桥高墩超高泵送混凝土设计和施工要求,开展了机制砂配制高墩混凝土试验研究。通过混凝土配合比优化设计,对机制砂混凝土的工作性与可泵性、力学性能及耐久性进行了系统研究。研究结果表明,配制的机制砂混凝土的工作性与可泵性良好,具有良好的施工性能,可满足超高泵送施工要求;硬化混凝土的强度与耐久性满足设计要求。     

如何在项目设计阶段开展可施工性审查工作

以石化项目为例,介绍了在项目设计阶段开展可施工性审查的重要性及作用。同时,还介绍了开展可施工性审查的人员配备及职责,审查过程及设计审查清单。     

EPC模式下工程设计阶段可施工性应用研究

可施工性对建筑产品的设计质量、施工的便利性以及高效性都有重要影响。通过对国内外可施工性研究的综述,从合同模式出发,对比分析了传统模式DBB与EPC总承包模式的设计组织过程,并提出EPC总承包模式对于解决可施工性问题所固有的优势。然后结合EPC模式的特点,给出EPC模式下工程设计阶段可施工性研究的基本步骤,以期推动可施工性思想在我国EPC工程项目中的应用。     

建设项目设计可施工性研究

设计与施工的分离，使得彼此之间的交流越来越少，设计中对可施工性方面的考虑也越来越少，常常使得施工图纸无法施工，轻则导致设计变更、延误工期，重则造成整个方案重新调整。而开展建设项目设计的可施工性研究，加强设计与施工间的交流，将施工中累积的知识与经验尽早反馈到设计中，就能有效地解决设计中存在的不可施工性问题，提高建设项目的整体效益。     

新时期高层建筑给排水设计施工重要环节的探讨

本文依据高层建筑给排水施工设计的重要性、复杂度及相关施工设计安全规范要求展开了可靠性设计施工探讨,对给排水施工设计中的要点问题进行了深入分析,有利于提升高层建筑的设计质量与施工水平,对提升高层建筑的美观性、实用性及长效服务性有积极有效的促进作用。     

建设项目的可施工性现状及对策研究

在我国目前关于可施工性研究理论较少的情况下,作者结合自身建设项目施工的经历,对建设项目可施工性的现状及对策进行了研究,提出了自己的看法,希望能给我国从事工程建设行业的相关人员提供参考。     

江汉三桥钢管混凝土设计与施工技术

本文利用高效减水保塑剂、粉煤灰、膨胀剂等,设计了一种新型泵送钢管混凝土配合比,应用于江汉三桥中,介绍了泵送设计的配置、泵管的布置及施工注意事项等,施工证明采用该配合比配制的混凝土和易性好、可泵性好、坍落并损失低,能满足远距离运输和泵送的要求,现场留样和对钢管混凝土的检测表明该配合比具有高强、早强、自密实及补偿收缩等优点。     

在规划设计阶段提高市政管线项目的可施工性

论述了可施工性研究在项目实施前阶段的价值和业主实施可施工性研究的管理原则;提出了在规划设计阶段提高市政管线项目的可施工性研究的重点.     

Project owners' role in improving constructability of construction projects: an example analysis for Indonesia

Constructability is an approach that links the design and construction processes, which can lead to significant savings in both cost and time required for completing construction projects. Improving constructability of construction projects is the responsibility of all project stakeholders: owners, designers and contractors. As the owners have the most authority in enforcing the implementation of constructability, the owners' awareness of the benefit of improved constructability is the most important. Project owners must be aware that the decisions that are made in the initial stages of planning and design are difficult and costly to change once construction begins. A questionnaire survey was used to gain information on the Indonesian construction project owners' understanding of constructability by assessing the current constructability practices and their impact on project performance. The study shows that project owners in Indonesia do have some understanding of the importance of constructability. However, the traditional approach to project delivery, which is the preferred method by most of them, limits their option for involving construction personnel in the pre‐construction phases.     

A review of current practice in constructability improvement: case studies on construction projects in Indonesia

The concept of constructability emerged in the late 1970s, evolved from studies into how improvement can be achieved to increase cost efficiency and quality in the construction industry. It is an approach that links the design and construction processes. The studies in the USA, UK and, later, in Australia have demonstrated that improved constructability has lead to significant savings in both cost and time required for completing construction projects. However, in implementing constructability improvement, it is important to consider the uniqueness of the construction industry in a specific country. To improve constructability in Indonesian construction projects, two main questions need to be answered: how is construction integrated into planning and design in existing practice and how can constructability be improved. Case studies indicate that the contractual relationships between the project team members determine the options for early involvement of construction personnel, and that the current constructability practices have had some positive impacts on project performance. In addition to a reduction in constructability problems, current constructability practices have enabled significant economic savings.     

An assessment of pictographic instructions derived from a virtual prototype to support construction assembly procedures

Three-dimensional imagery derived from a building information model (BIM) based virtual prototype can be used to non-verbally communicate constructability information. This paper describes an assessment of using instructive pictographs to characterize prefigured assembly information for construction assembly procedure. It employs industry-recognized virtual prototyping software to model the assembly configuration of a real world mobile test laboratory. The findings of the research show that virtual prototyping as an nd-BIM technology has the potential to better integrate architecture, engineering and construction (AEC) information to project delivery with user-specific constructability knowledge.     

Constructability implementation: a survey in the Malaysian construction industry

Twenty-three constructability concepts are identified. Based on these, an industry-wide questionnaire was administrated in Peninsular Malaysia. The respondents were the engineers working with owners, consultants, contractors, subcontractors and construction management firms. The importance, from the viewpoint of the Malaysian engineers, of the constructability concepts and the degree of the actual application of those concepts in the Malaysian Construction Industry is presented so that an insight on constructability implementation can be established. Fieldwork results revealed that the Malaysian engineers showed high acceptance of 22 concepts and rejected the one that relates to the fast-track method of construction. Those engineers accepted the constructability concepts from the theoretical point of view but generally they did not apply these concepts in their practices. The study also concludes that the Malaysian engineers show a wide understanding of the majority of the concepts. However, they did not link those concepts under the umbrella of constructability.     

Quantitative constructability analysis with a neuro-fuzzy knowledge-based multi-criterion decision support system

This paper presents a multi-criterion decision model for quantitative constructability analysis based on a neuro-fuzzy knowledge-based system. The traditional constructability definition is modified so that constructability can be quantified, measured, and improved. A multi-layer information aggregation network is proposed to incorporate the manager's subjective preference information. The constructor's technology management policy can be reflected in the constructability evaluation process based on technology implementation preferences. A systematic approach to constructability problem detection and constructability improvement is developed to improve technology performance. Two examples of constructability analyses for alternative concrete formwork technologies are given to demonstrate the functions of the proposed methodology.     

总承包模式下设计管理研究

从设计管理的重要性入手,基于全生命周期理论,阐述了总承包模式下的设计过程管理;对比传统的DBB模式,总承包模式给予设计管理新的内涵和方法,强调设计优选,设计的可施工性及设计沟通.总承包设计管理的目的在于提高建设项目的整体效益.     

多目标模糊优选方法在深基坑工程方案优选中的应用

基坑设计过程中,需要考虑方案可靠性、工程造价、施工难度、工期、环境等因素的影响,对设计方案的优选就是实现多目标的最优.在介绍多目标模糊优选方法基础上,建立了满意决策模糊优选模型,确定出影响深基坑开挖的10个指标,利用层次分析法计算了这些指标在设计方案中所占的权重,并将其应用于创世纪工程深基坑开挖方案的优选中,取得了较好的效果.