DEFINING FIRE AND TECHNICAL CHARACTERISTICS OF A STEEL BEAM WITH CORRUGATED WEB AND ITS COMPLEX LINING

2017 ◽  
Vol 7 (3) ◽  
pp. 4-9
Author(s):  
Nikolay A. ILYIN ◽  
Denis A. PANFILOV ◽  
Evgeny V. ILDIYAROV ◽  
Alexey O. LUKIN

This new technical solution introduced in the paper is related to the area of fi re safety and involves the method of determining required indicators of constructional fi re-proof characteristics of a steel beam with corrugated web which in itself is a composite welded I-beam with large sheet and plate lining. The paper also delivers results of patent research on the problem of steel constructions fi re protection and describes other similar technical solutions. The authors analyze shortcomings of these solutions and their technical level, identify tasks and objectives of their new technical solution and demonstrate technical eff ects of the new technology (such as devices, inventions, utility models). Further in the paper activities and measures to achieve the proper technological eff ect are outlined and application peculiarities of fi re and technical characteristics of the integrated steel lining are indicated. The researchers also stress specifi cs of the I-beam components performance evaluation and put forward new analytical equations to calculate fi re resistance characteristics of steel elements as well as a new methodology for determining geometric and heat-technical characteristics of complex fi re-proof lining. There is also an example of calculations according the developed algorithm given in the paper.

Buildings ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 247
Author(s):  
Charlotte Svensson Tengberg ◽  
Carl-Eric Hagentoft

Design-build contractors are challenged with the task of minimizing failure risks when introducing new technical solutions or adapting technical solutions to new conditions, e.g., climate change. They seem to have a disproportional trust in suppliers and their reference cases and might not have adequate resources or methodologies for sufficient evaluation. This creates the potential for serial failures to spread in the construction industry. To mitigate this, it was suggested that a predefined risk assessment framework should be introduced with the aim of providing a prequalification and requirements for the use of the technical solution. The objectives of this paper are to develop a comprehensive risk assessment framework and to explore the framework’s potential to adequately support the design-build contractor’s decisions. The framework uses qualitative assessment, relying on expert workshops and quantitative assessments, with a focus on simulation and probabilities. Tollgates are used to communicate risk assessments to the contractor. The framework is applied to a real-life case study of construction with a CLT-structure for a Swedish design-build contractor, where exposure to precipitation during construction is a key issue. In conclusion, the chosen framework was successful in a design-build contractor context, structuring the process and identifying difficulties in achieving the functional requirements concerning moisture. Three success factors were: documentation and communication, expert involvement, and the use of tollgates. Recommendations to the design-build contractor on construction of CLT structure are to keep construction period short and to use full weather protection on site.


2021 ◽  
Vol 13 (7) ◽  
pp. 3682
Author(s):  
Renata Turisová ◽  
Hana Pačaiová ◽  
Zuzana Kotianová ◽  
Anna Nagyová ◽  
Michal Hovanec ◽  
...  

Maintenance management is connected with two opposing aspects, management costs and operational efficiency. With the implementation of new technology within the Industry 4.0 (I4.0) concept, new technical solutions are being created. These solutions (mainly robotic workplaces) must reach a maximum performance rate, production quality, and, of course, high availability. Their operation, during the whole life cycle, is expected to be absolutely safe with minimum maintenance costs. These trends, even though they seem to be optimistic, face a lot of problems. The conducted research follows up on the results of previous research aimed at the initial assessment Slovak industrial company readiness status for the I4.0 conception between 2017 and 2019. The aim of the ongoing research was to assess the readiness status in more than 70 industrial organizations in the selected area for the new concept of maintenance management (eMaintenance) and its relation to machinery integrated safety. The research was carried out by questioning, with the structure of individual questions and closed answers stemmed from the self-evaluation according to the new European Foundation for Quality Management (EFQM) Excellence Model (2020). The results of the research were presented to managements of questioned organizations and confirmed the assumptions about a low level of maintenance management transformation to eMaintenance.


Author(s):  
Pablo Cazenave ◽  
Ming Gao ◽  
Hans Deeb ◽  
Sean Black

The project “Development of an Industry Test Facility and Qualification Processes for in-line inspection (ILI) technology Evaluation and Enhancements” aims to expand knowledge of ILI technology performance and identify gaps where new technology is needed. Additionally, this project also aims to provide ILI technology developers, researchers and pipeline operators a continuing resource for accessing test samples with a range of pipeline integrity threats and vintages; and inline technology test facilities at the Technology Development Center (TDC) of Pipeline Research Council International, Inc. (PRCI), a PRCI managed facility available for future industry and PHMSA research projects. An ILI pull test facility was designed and constructed as part of this project based on industry state-of-the-art and opportunities for capability improvement. The major ILI technology providers, together with pipeline operator team members, reviewed the TDC sample inventory and developed a series of ILI performance tests illustrating one of multiple possible research objectives, culminating in 16-inch and 24-inch nominal diameter test strings. The ILI technology providers proposed appropriate inspection tools based on the types of the integrity threats in the test strings, a series of pull tests of the provided ILI tools were performed, and the technology providers delivered reports of integrity anomaly location and dimensions for performance evaluation. Quantitative measures of detection and sizing performance were confidentially disclosed to the individual ILI technology providers. For instances where ILI predictions were outside of claimed performance, the vendors were given a limited sample of actual defect data to enable re-analysis, thus demonstrating the potential for improved integrity assessment with validation measurements. In this paper, an evaluation of the ILI data obtained from repeated pull-through testing on the 16 and 24-inch pipeline strings at the TDC is performed. The resulting data was aligned, analyzed, and compared to truth data and the findings of the evaluation are presented.


Author(s):  
O.V. DOROFEEV ◽  
V.I. VOROBYEV ◽  
M.I. BORZENKOV ◽  
O.V. IZMEROV ◽  
S.N. ZLOBIN

The issues of development of traction drives of locomotives are considered. It was found that with the existing limitations of the traction force and the speed of continuous operation, asynchronous traction motors do not have clear advantages over collector motors. The possibility of creating collector motors for electric locomotives with a power equal to the used asynchronous ones has been proved, new technical solutions have been proposed for units that ensure the reliability of the latter when using high-torque motors (elastic gearwheel with chevron teeth, two-layer rubber-metal hinge, rubber-cord clutch options), as an optimal solution for the drive with collector motors, it is proposed to use a drive with a support frame motor and an axial gearbox. The directions of research necessary for the practical implementation of drives with a high-torque traction motor are determined, it is proposed to conduct research on the feasibility of creating diesel locomotives with bogies, unified with electric locomotives. The proposed solutions received two patents for inventions, eight patents for utility models, two patent applications were filed.


Author(s):  
Oleksandr Kholodyuk ◽  
Ruslan Bulin

Inventive and patent licensing work is an integral part of the activities of engineering, technical and scientific workers in all spheres of the economy. Invention is creation of technological (technical) solution that meets the conditions of patentability (novelty, inventive step and industrial applicability). Such solutions may, in particular, be inventions or utility models. Therefore, the processing of applications, in particular its component, which are the claim of invention and the utility mode formulal, is an urgent task when preparing the application materials for obtaining the security document - patent. The object of the study in this article was the preparation, the sequence of presentation, taking into account the structure of the interrelated elements and parts of the formula, as a component of an application for an invention or utility model. The purpose of the work was to fully and comprehensively investigate the proper execution of the claim of invention and the utility model as an integral part of the application, and one that defines the scope of legal protection. The task of the work was: to consider the creativity and inventive activity of man as a form of self-realization; analyze the properties of the invention and utility model as objects of legal protection; investigate the features of the claim of invention and utility models. The research methodology was based on the method of materialistic dialectics, methods of analysis and synthesis of both information from official sources and information from the works of other researchers. The scientific work considers the peculiarities of execution of the claim of invention or utility model as an integral part of the application, which is submitted to the state enterprise "Ukrainian Institute of Intellectual Property" for a patent. The purpose of the claim of invention and its requirements have been analyzed. Thus, the features of the invention (utility model) in the claim of invention (utility model) are laid out in such a way as to enable them to be identified, that is, a clear understanding of their content by a person skilled in the art. The composition of the claim containing limiting, separating and distinguishing parts has been analyzed. The features of the content of the application for the invention of "device", "method" and "new application of a known product or process" are considered.


2016 ◽  
Vol 7 (1) ◽  
pp. 69-78
Author(s):  
Mariusz Marcin Maslak ◽  
Marcin Lukacz

Purpose The purpose of this paper is to present and discuss in detail the design approach to shear buckling resistance evaluation for corrugated web being a part of a steel beam exposed to fire. Design/methodology/approach It is based on the interaction between the local and global elastic instability failure modes as well as on the possible yielding of the whole web cross-section during fire. Findings New formulae, adequate for specification of the suitable shear buckling coefficients, depend not only on the web slenderness but also on the temperature of structural steel. Originality/value The methodology proposed by the authors can be added to the current European standard recommendations given in EN 1993-1-2 as a well-justified design algorithm helpful in reliable evaluation of a safety level for steel beams with slender corrugated webs subject to fire exposure. It seems to be highly desirable because, at present, there are no detailed instructions in this field.


Author(s):  
Irina Kirichenko ◽  

The patent is an amazing thing, it’s like a narcotic: nothing but a chemical formula known for more than one century, registered as a utility model, but can subjugate all other licenses and permits in a way that no other “gun” can. According to Article 1 of the Law of Ukraine “On Protection of Rights to Inventions and Utility Models”, a utility model (just as an invention) is the result of human intellectual activity in any sphere of technology i.e. the object of the utility model (UM) may be any product (device, substance etc.) or a process (unlike us, unfortunately our Russian colleagues severely limited innovation activity. For example, Article 1351, Paragraph 1 of the Civil Code of the Russian Federation allows you to protect as a utility model only a technical solution relating to an apparatus).


2013 ◽  
Vol 4 (3) ◽  
pp. 103-113 ◽  
Author(s):  
Diana Penciuc ◽  
Marie-Hélène Abel ◽  
Didier Van Den Abeele

As systems become more and more complex, more complex processes, organization and division of work are needed to achieve their conception and realization. The growing difficulty consists in the number and distribution of collaborators in disparate regions on the globe, the multifaceted communities that need to be coordinated in order to assure integration and coherence of their work. It is also the case of building railway technical solutions. The heterogeneity of customer market adds a supplementary challenge: adapt the solution to the customer background, context and real needs. In this context the authors propose a workspace to support collaboration when building customer technical solutions. The authors think that adequate collaboration support needs to be provided for each community and that a common backbone is needed between these communities to assure integration and coherence of their work. This paper gives a model and implementation of a dedicated workspace that can handle collaboration during complex processes like the construction of a railway technical solution.


1996 ◽  
Vol 11 (1) ◽  
pp. 71-77 ◽  
Author(s):  
David Poulson ◽  
Neil Waddell

Traditional methods of systems design have tended to concentrate on capturing functional requirements and from them develop a system that will provide users with a technical solution to a problem they may have. However, there is a growing understanding, with historical origins in sociotechnical systems theory, that technical solutions alone, regardless of how well designed, may not succeed fully unless there is a concomitant understanding of the organization into which the technical solution is to be introduced. Organizational requirements, therefore, should become considerations of equal importance to systems designers. The ESPRIT Project ORDIT (organizational requirements definition for information technology) has developed a methodology which identifies and operationalizes organizational requirements for IT systems. This paper presents a case study in which the ORDIT concepts are applied to the process of introducing an IT system into a courtroom.


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