钢网架施工质量控制及事故预防

钢网架结构是一种空间铰接杆件体系，属高次超静定结构，因其跨度大、自重轻、节约材料，被广泛应用于体育、文化场馆、工业厂房等建筑的屋盖系统。     

浅谈钢网架施工安装

钢网架结构是一种空间铰接杆件体系，属高次超静定结构，因其跨度大、自重轻、节约材料，被广泛应用于体育、文化场馆、工业厂房等建筑的屋盖系统。     

工业厂房屋面球节网架施工质量监督控制

近些年来,我国的经济发展迅速,屋面球节网架结构在建筑领域中的应用,其性能能够满足建筑结构需求,现已经开始广泛应用于大型工业厂房及公共建筑领域。网架施工质量会直接对工程整体质量以及结构安全造成影响,因此如何控制好网架施工质量开始成为业内人士的重点关注内容。目前应用的网架结构类型有多种,其中焊接球节网架施工技术操作较为便捷且施工质量易于控制,因此在工业厂房的施工过程中得到了应用。本文在焊接球节网架施工技术特点的基础上对如何做好施工中的质量控制进行了分析阐述。     

滑移式施工架设高空大跨度钢网架施工技术

随着大跨度空间结构工程施工工艺及施工技术的日益复杂化,本文依托实际工程背景,对滑移式施工方法进行了深入而系统的分析,从不同的角度将滑移式施工方式进行了分门别类,认真考虑每一个施工环节,得出了滑移式施工的施工流程,并在前面分析的基础上,对施工技术要点进行了分析,并结合实际案例,将滑移式施工方法应用于脚手架架设高空大跨度钢网架施工中,提高了施工工作效率,节约了工程造价,保障了工程的顺利竣工。     

体育馆螺栓球节点钢网架施工

介绍了某市体育中心体育馆大网格大型螺栓球节点钢网架结构的施工工艺流程.     

钢波纹管涵洞在公路施工过程的质量控制

钢波纹涵洞其实就是由碳钢板加工制作而成的,用高强螺栓连接,外形上带有明显的波纹形状,经过了耐腐蚀的工序处理的一种类似于金属管道的物体。它有着抗剪能力、抗压能力强、成本廉价、施工方便且耗费工时较少等优点,此外,它还是一项环保节能的技术。本文将针对钢波纹涵洞在公路施工中的质量控制做出深入分析工作,旨在促进公路建设的更好发展。     

浅谈圆形封闭煤场网架施工技术

随着火力发电厂锅炉机组和规模容量向高参数、大容量发展,要求电厂储煤量也越来越大,如何提高场地的利用率,缩小占地面积,降低土石方量,并提高煤场作业自动化水平,安全水平及环保水平是国内现代化火力发电厂储煤场发展需解决的焦点问题。     

钢结构厂房建设中的施工与质量控制问题探讨

随着钢结构在厂房建设中的广泛应用,显示出结构性能好、施工速度快等优点。但由于施工技术与经验的参差不齐,在施工与质量控制过程中的一些问题必须要引起我们的关注。本文主要针对钢结构厂房建设中主要构件的施工工艺及安装、施工过程中的质量控制问题进行探讨,以期通过本文的阐述,克服不利条件,有效提高工程质量。     

浅谈混凝土桥梁结构表面涂层防腐施工控制要点

涂层防腐技术应用在公路桥梁上既可以保护混凝土结构又可以改善混凝土外观，在海洋及滨海环境下涂层防腐技术逐渐被采用。本文将结合具体工程实例着重介绍涂层防腐的施工工艺及控制要点     

Corrosion Resistance of Pipe Steel in Oil–Water Media

We study the composition of deposits on the internal surface of the Kremenchuk–Kherson oil pipeline and the corrosion damages of its top and bottom fragments. We show that, in the main, corrosion damages are attributable to the presence of groundwater. We have established that the corrosion resistances of operated and nonoperated pipe steel in groundwater are different. In mixed oil–water media, the corrosion rates of degraded and nondegraded steel are practically identical but, if there is no mixing, degraded steel corrodes 1.4–1.6 times faster.     

依维柯车架涂装工艺简介

南京跃进汽车集团在“八五”期间引进的依维柯公司Ｓ系列汽车项目，主要包括高档中型面包车及轻型货车，由意大利ＧＥ－ＩＣＯ涂装公司和中汽南京设计研究院联合设计，国内数家涂装单位共同制造。２年多的生产实践证明，这是一条高质量、高水平的车架阴极电泳涂装线。本文...     

Influece of Silica Fume on Corrosion Behaviour of Reinforced Steel in Different Media

Electrochemical and corrosion behaviour of reinforced steel embedded in cement pastes incorporating different amounts of silica fume as a partial replacement of cement has been studied in chloride and sulphate solutions by using different electrochemical techniques.The results indicate that ,while steel passivity degree is low in the control samples‘upon soaking in the corrosive media,it has been high ih samples incorporating silica fume and increased with increasing silica fume content.The improvement effect of silica fume may be attributed to the pore solution structure of the cement paste,which limits the mobility of aggressive ions near the surface of the steel.The mechanism of steel corrosion due to chloride and sulphate attack and passivation effect of silica fume are discussed.     

Influence of Silica Fume on Corrosion Behaviour of Reinforced Steel in Different Media

Electrochemical and corrosion behaviour of reinforced steel embedded in cement pastes incorporating different amounts of silica fume as a partial replacement of cement has been studied in chloride and sulphate solutions by using different electrochemical techniques. The results indicate that, while steel passivity degree is low in the control samples' upon soaking in the corrosive media, it has been high in samples incorporating silica fume and increased with increasing silica fume content. The improvement effect of silica fume may be attributed to the pore solution structure of the cement paste, which limits the mobility of aggressive ions near the surface of the steel. The mechanism of steel corrosion due to chloride and sulphate attack and passivation effect of silica fume are discussed.     

Management of the Quality of Corrosion Protection of Structural Steel Based on Corrosion Risk Level

The paper deals with the theoretical and practical aspects of improving regulatory and technical framework for assuring the quality and safety of metal structures and their protective coatings under the exposure of corrosive environment. Methodological approach has been developed to managing technological safety, assessing the risks of corrosion failures, and extension of an industrial facility＇s life based on company standards taking into account the requirements for safe operation of buildings and installations. Basic provisions of the method of limit states design have been analyzed to determine： design characteristics of corrosion impacts, computational models and design cases for affirming compliance of corrosion resistance, and durability and maintainability of structures and their protective coatings. Presented are practical examples of justifying the choice of means of primary and secondary protection, taking into account classification of the established levels of facility corrosion hazard. On the basis of limit state design principles, logistical control- and decision-making system is generated for reliability assurance of steel structures and protective coatings. Assessment criteria are specified for the risks with the use of the materials and technologies of primary and secondary corrosion protection.     

Corrosion and Hydrogenation of 17G1S-U Steel in Hydrogen-Sulfide Media of Different Concentrations

Materials Science - We study corrosion, hydrogenation, and mechanical properties of 17G1S-U steel in chloride-acetate solutions with hydrogen-sulfide concentrations of 25, 100, 500, and 1500...     

钢铁件涂装前处理除锈防锈剂的研制

为了解决涂装前处理人工除锈效率低、普通酸除锈易返锈和积留残酸等问题,通过探讨除锈防锈剂的作用机理和进行成分筛选试验,研究了除锈防锈剂的成分和工艺条件对其除锈防锈性能的影响,确定了除锈防锈剂的最佳配方和工艺,除锈防锈效果优良.该除锈防锈剂在金属表面形成磷酸盐保护膜,既可作为普通金属除锈防锈剂使用,也可作为金属涂装前处理剂使用.     

穹拱式钢屋架安装工法

对穹拱式钢屋架安装工法的主要特点、施工要求、工艺流程、操作步骤、质量标准及经济效益作了较详细的叙述.