BIM技术在建筑电气设计中的应用标准和展望

随着社会的发展和时代的进步,科学技术在各个行业得到了广泛的应用,而BIM技术在建筑行业也得到了相应的运用,BIM技术对处理复杂的建筑项目提供了有强力的支持,电气设计是建筑过程中的重要内容之一,只有将其高效顺利的进行,才能为建筑项目质量的提高奠定基础。BIM技术是一种数字化信息的应用而该项技术在建筑电气设计的应用,可以提升建筑电气设计的品质和工作效率。本文就BIM虚拟技术的概念、特征以及BIM技术在建筑电气设计的应用进行了论述,并对BIM技术在建筑电气设计应用的现状进行了分析以及今后BIM的发展进行了展望。     

探析建筑结构设计中BIM技术的应用

文章主要针对当前建筑行业中BIM即建筑信息模型概念进行了分析,并详细介绍而来技术特点以及设计理念。从而证实BIM是建筑行业发展的又一新的空间,是建筑行业中的信息革命,BIM应当在整个建筑行业中予以推广。     

应用型人才培养模式改革下的建筑信息模型技术应用标准研究

建筑信息模型(BIM)已经逐步应用到建筑行业,培养符合市场的需求的具备先进BIM信息技术的应用型专业人才具有重要意义,本文分析了BIM当前现状,给出了BIM融入教学的各种方式,为土建类专业应用BIM技术人才培养提供借鉴。     

建设项目的BIM技术应用实施框架

Building Information Modeling——建筑信息模型,简称BIM。我国建筑市场庞大,越来越多的项目面临需要BIM技术支撑的挑战。随着"大数据"时代的到来,基于二维的表达方式、传统的管理手段、单向的运作流程已很难满足建筑行业进步的发展需求。BIM已经不仅仅是信息模型在工程建设行业的应用,伴随着BIM的发展,工程建设流程已经开始重构。BIM技术是创建并利用建筑数字化信息模型,对建设项目立项、设计、建造和运营管理全过程进行整合的方法和工具。为应用区域范围广、传递数据量大、介入业务种类繁多的建设工程提供平台,集合建筑全过程各方信息,并通过信息整合使数据透明化、及时化、准确化,实现多方、多人、多地、紧密协作、信息互通、有效管理。现阶段BIM技术已经被广泛应用于建设项目工作中,本文将分层浅析BIM技术在建设项目中的应用,并提出个人见解。     

基于BIM的古建筑构件信息的标准化及量化提取分析

科技在不断发展,各行各业都在不断涌现新技术,我国建筑工程行业也不断发展,建筑行业已经成为我国支柱型产业。我国古代有很多著名的建筑工程,这些古建筑需要我们去保护、去学习,因此古建筑构件信息标准化以及量化提取是古建筑保护行业中的首要问题,随着科技的进步,建筑行业的发展也逐渐与新技术相结合。BIM技术属于建筑信息化模型,这种技术可以应用在建筑工程的每一个工作流程中,包括古建筑构件信息的提取。     

BIM技术的装配式构件系统设计与优化分析

BIM技术是以三维数字技术为基础的建筑信息模型技术,其中涵盖建筑模型的各种数据信息,经过参数转换实体的方式使设计得以实现,将图纸的束缚摆脱。BIM技术的应用使建筑设计更新换代,转变传统管理模式,使工作效率大大提升。本文对BIM技术发展现状及装配式建筑发展特点进行分析,将预制装配式系统作为研究对象,利用BIM技术对节点结构、设计、工程量统计等进行优化分析,为相关领域作出参考。     

BIM技术在桥梁工程设计与施工中的应用研究

近年来,我国桥梁建设项目在逐步增多,使BIM(建筑信息模型)技术被应用到桥梁工程实际建设中,其可以更好地辅助桥梁工程设计与施工人员及时完成项目建设,能大大减少工程建设隐患,提高桥梁建设质量。BIM技术具有全生命周期性、协调性与可视化的特点,能让建筑行业进行信息的交互、采集与协同化作业。该文对BIM技术在桥梁工程设计与施工中的应用展开研究。     

明清古建筑信息模型设计平台研究

相对于我国古代先进的建筑技术成就,我国在古建信息化方面还比较落后,急需利用现代信息技术对古建筑保护和开发进行探索和研究。BIM技术的引入为古建筑的保护研究提供了新的途径,在深入研究古建筑构件构造特点、建造规律、装饰彩绘以及历史文化等的基础上,研发了古建筑信息模型设计平台。该平台不仅为古建筑构件信息模型库的建立和管理提供了基础平台,而且还可以为古建筑的修缮和复原、古建筑的研究以及古建筑虚拟现实系统等提供精确的信息。     

基于BIM5D的建筑施工技术优化及工程管控

当前,建筑技术在建筑施工应用中,存在返工次数过多、成本预算高等问题,为此,该文基于BIM5D技术研究建筑施工技术优化及工程管控方法。采用BIM技术构建5D模型,优化支护结构,采用多层次法确定工程评价指标,动态施工跟踪施工质量安全,完成建筑施工的技术优化和工程管控。实验表明:BIM5D模型能够在建筑施工中通过碰撞检查,对建筑构件出现的问题及时修整减少返工次数,并将修整好的构件用料价格和中标结果及时作出调整,降低整体建筑的施工成本预算,管控整体建筑施工工程。     

建筑结构设计中BIM技术的应用标准

本文主要对建筑结构设计中BIM技术的应用进行详细的分析,进而为建筑行业的发展提供帮助,满足人们的需求。     

Effect of Permeable Crystalline Material on Steel Reinforcement Corrosion of Concrete

Permeable crystalline materialcan permeate into pores and cracks of concrete and catalyze the reaction between Ca(OH) 2and unhydrated cement to generate a great quantity needle non-soluble crystals, which can stop up the pores and cracks of concrete, and increase the impermeability of concrete. This paper reported the results of a study conducted to evaluate steel reinforcement corrosion of concrete specimens uncoated and coated with permeable crystalline material as well as mixed with the permeable crystalline material. The properties evaluated for corrosion test were water impermeability, water absorption, compressive strength and potential. The results of water impermeability, water absorption, compressive strength clearly showed that the permeable crystalline material could prohibit water, any soluble salts and moisture from penetrating the concrete to cause corrosion, leaking, and other problems, and it did increase the compressive strength, which was favorable for protection of corrosion of reinforcing steel. Moreover, it was concluded from the potential-time curve that the steel reinforcement of uncoated specimen was in the state of activation whereas that of other specimens coated and mixed with the permeable crystalline material was in the state of inactivation. Above all, it was indicated that the permeable crystalline materialis very effective to protect the steel reinforcement of concrete from corrosion.     

The Research and Application About "Dry Peeling Off" Technology for Airplane Surface Paint Layer

In this paper, the principle of spurting take off lacquer were introduced; and with orthogonal method the unsaturate polyester was prepared ;it was easy to peel airplane paint layer off with this material and equipment.     

Quality Study of Honeycomb Core Shaping Without Wax Stabilization

Sandwich panels utilizing honeycomb cores result in lightweight, high-strength units that are very rigid. Indeed, they give honeycomb panels the best strength-to-weight ratio of any construction type available. Conventionally, the wax is poured into the cell of the core to strengthen the structure and prevent the core from being crushed during milling. Much time and labor is required to wax, mill, and clean the cores. In this study, the process of pouring wax into the core was skipped. In other words, the cutter directly milled the core. Experiments showed that the compressive strength of the core produced without wax stabilization was only 3% lower than that of cores produced using the traditional method. In addition, the drum peel strengths of cores produced without wax stabilization were 38.4% higher than cores produced using the traditional method, in which residual wax seriously polluted the adhesive. It was also found that eliminating the wax process can reduce costs.     

In-process thermal treatment of polylactic acid in fused deposition modelling

Polylactic acid (PLA) is one of the most widely used open source fused filament fabrication materials due to its ease of extrusion, biodegradability, and mechanical strength. The mechanical strength of PLA largely depends on the proper growth of its semi-crystalline structure, which can be severely impaired by a low rate of crystallization, particularly in open source printers. This can be further aggravated by the non-uniform thermal distribution of heat that causes improper curing among the extruded beads of the printing material. As a result, PLA printed on open source printers does not achieve the best mechanical properties. This research, for the first time, proposes an additive-free solution implemented through a detailed set of experimentation to improve the curing rate through in-process temperature variations to cure the joints among the beads. Scanning electron microscopy (SEM), differential scanning calorimetry (DSC) and Fourier transform infrared (FTIR) spectroscopy is used to confirm the improvements in the bead joints. This work is conducted in two phases of experiments. In the first phase, a full factorial ANOVA is used to investigate various process parameters and the important variables are used in the second phase to print test specimens in four different sets.     

Investigation of the Corrosion Behaviors of HVOF-Sprayed Carbide Cernet Coatings in Molten Al-Zn-Si Alloy Bath

In continuous hot-dip galvanization process the corrosion and chemical stability of the sink roll in the galvanizing bath are important problem which effects on the quality and productivity. In order to protect the sink roll the carbide cermet and/or ceramic coatings were deposited on the surface of the sink roll. The WC-, Cr3 C2-cermet coatings were deposited by high velocity oxygen fuel (HVOF) spray, respectively. The coating samples were immersed in molten Zn-alloy containing 50 wt % aluminum at 833 K for 24 hr and 144 hr, respectively. The inter-diffusion and inter-reaction of Zn, Al and elements in coating and corrosion behaviors of these coatings were investigated by XRD, SEM and EPMA etc. The corrosion mechanisms of the carbide cermet coatings and ceramic coatings in molten High Al-Zn-alloy were approached.     

Fundamental study of adhesion of ice to cooling solid surface (Discussion on influence of copper oxide layer on ice adhesion force)

In many situations, ice often adheres to a cooling solid surface, frequently causing serious accidents. It is critical to clarify the mechanism of ice adhesion to the cooling surface in order to prevent ice adhesion. In a past study, the shearing stresses of two kinds of test plates with a copper surface having the higher thermal conductivity were measured. The shearing stress corresponds to ice adhesion force. Both shearing stresses were significantly different; however, the cause remains unclear.Therefore, the present study focuses on an oxide layer as the main factor causing the difference of both shearing stresses; the influence of the oxide layer formed on shearing stress was discussed. And in the removal and reformation processes of the oxide layer, the time variation of the shearing stress was clarified. Moreover, the relationship between the state of the copper surface and the shearing stress was also clarified by surface analysis.     

重塑标准推行格局 推动LED照明的普及（英文）

正When you are enjoying the green,energy-saving and healthy lighting of IKEA LED luminaire,you may not realize that most of IKEA’s LED bulbs are produced by the LED luminaire smart manufacturing system of Hangzhou Zhongwei Photoelectricity CO.,LTD(ZVISION).No longer enclosed in the laboratory,the product standards are brought into the factory workshop and even to the entire production process.Thus,the standards are promoted and applied in a favorable way by enterprises,benefitting consumers with high quality products.     

Chinese Experts Contribute to ISO＇s New Toy Standards

正The international standard,ISO 8124-6,Safety of toys–Part 6:Certain phthalate esters in toys and children’s products,was officially issued by ISO worldwide on August 15.It was the first time for Chinese experts to lead the ISO standard development in toys industry.The standard was drafted by a group of Chinese experts from SAC/TC for toys and relevant Chinese departments and finally completed by a dedicated international group of experts.ISO 8124-6 makes a substantive breakthrough in the aspects of the scope of toys,limitation of plasticizer types,control of test cost,accuracy of test,operation convenience,etc.,offering the operational guidance for toy manufactures and testing laboratories.     

中国质量(北京)大会(英文)

正Themed on"quality,innovation,development",the first China Quality Conference(Beijing)was held in the Great Hall of the People on September 15.Chinese Premier Li Keqiang delivered an important speech at the conference.State Councilor Yang Jing and Wang Yong attended the conference with over 600 domestic and international representatives from foreign,regional and international quality organizations     

National Working Meeting on Land and Resources Standardization

正The National Working Meeting on Land and Resources Standardization was held in Beijing on July 15,2014.Wang Min,the Deputy-Minister of the Ministry of Land and Resources,and Yin Minghan,the Chief-Engineer of SAC addressed the meeting.Representatives from relevant competent departments and technical committees were present.The meeting aims to summarize work,discuss existing problems and make clear working thoughts,promoting standardization work of land and resources to a new level.Wang Min pointed out that the standardization work of land and resources should be centered on the basic principles of"protecting land and resources dutifully,intensively and economically utilizing land and resources,and making all-out efforts to safeguard the public’s rights and interests",highlighted the