Inżynieria Bezpieczeństwa Obiektów Antropogenicznych最新文献_第5页

Defining the thermal conductivity of thermally heterogeneous hollow wall bricks used as elements for increasing the comfort of buildings 定义热非均质空心墙砖的导热性，作为增加建筑物舒适度的元素

Inżynieria Bezpieczeństwa Obiektów Antropogenicznych Pub Date : 2021-12-15 DOI: 10.37105/iboa.126

Krzysztof Pawłowski, M. Niedostatkiewicz

引用次数: 0

Design of joints of thin sheet parts with mechanical connections (according to EN 1993-1-3) 机械连接薄板件接头设计(根据EN 1993-1-3)

Inżynieria Bezpieczeństwa Obiektów Antropogenicznych Pub Date : 2021-12-05 DOI: 10.37105/iboa.121

M. Broniewicz, Sandra Mlonek, R. Szeląg

{"title":"Design of joints of thin sheet parts with mechanical connections (according to EN 1993-1-3)","authors":"M. Broniewicz, Sandra Mlonek, R. Szeląg","doi":"10.37105/iboa.121","DOIUrl":"https://doi.org/10.37105/iboa.121","url":null,"abstract":"The main direction of development of steel building structures is to reduce the cost of implementation of buildings without changing their load-bearing capacity and value in use. Therefore, an essential factor in the development is the introduction of modern technologies. Solutions from other industries such as automotive or aerospace, have been adapted to perform building structures. As a result, today in the construction industry we use lightweight steel profiles from cold-bent elements. Modern technology and advanced calculation theory make it possible to build these structures much more economically than previous conventional systems. Elements and products made of thin sheets allow to reduce costs of construction, but at the same time is associated with the possibility of defects resulting in the appearance of a state of failure of structural elements or the entire facility. Connection zones of thin-walled elements are always the critical points, hence the need for a particularly thorough assessment at the design stage, and then at the implementation of the investment. Correct application of the presented calculation procedure in article will allow the design and realization of modern structures, which will be durable and safe in operation for the expected period of time.","PeriodicalId":227499,"journal":{"name":"Inżynieria Bezpieczeństwa Obiektów Antropogenicznych","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115384962","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Selected areas of threats to the security of accounting information system 选取了威胁会计信息系统安全的领域

Inżynieria Bezpieczeństwa Obiektów Antropogenicznych Pub Date : 2021-09-15 DOI: 10.37105/iboa.117

Anna Kuczyńska-Cesarz

引用次数: 0

Implementation of innovative technologies for the improvement of concrete properties for freezing and thawing processes 实施创新技术，改善混凝土在冻结和解冻过程中的性能

Inżynieria Bezpieczeństwa Obiektów Antropogenicznych Pub Date : 2021-09-15 DOI: 10.37105/iboa.118

K. Falkowski

{"title":"Implementation of innovative technologies for the improvement of concrete properties for freezing and thawing processes","authors":"K. Falkowski","doi":"10.37105/iboa.118","DOIUrl":"https://doi.org/10.37105/iboa.118","url":null,"abstract":"For over a hundred years, concrete has been a well-known building material and is widely used in construction. Its properties have convinced construction engineers, architects, contractors and investors, which is why it is currently difficult to find a building completed without the use of this material. However, the influence of atmospheric conditions and other environmental influences means that over time they leave more and more visible signs of progressive destruction even on the best building material of the century. Taking into account the problems related to aeration and surface hydrophobization, the aim of the work was to demonstrate that by using an admixture in the form of an anionic bitumen emulsion and a superplasticizer based on polycarboxylate ethers, it is possible to obtain hard-to-wet concretes with a favorable porosity structure and increased resistance to environmental influences. For static calculations and dimensioning, an original calculation model of the pavement made of concrete with dispersed reinforcement in the form of fibers was used, which made it possible to eliminate the reinforcement in the form of bars. Laboratory tests with the use of concrete samples taken during concreting carried out after 28 days of maturation confirmed the high compressive strength.","PeriodicalId":227499,"journal":{"name":"Inżynieria Bezpieczeństwa Obiektów Antropogenicznych","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125838622","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Modeling damaged precast structural system when its robustness check 建模损伤预制结构体系时对其进行鲁棒性校核

Inżynieria Bezpieczeństwa Obiektów Antropogenicznych Pub Date : 2021-09-15 DOI: 10.37105/iboa.119

V. Tur, A. Tur, A. Lizahub

{"title":"Modeling damaged precast structural system when its robustness check","authors":"V. Tur, A. Tur, A. Lizahub","doi":"10.37105/iboa.119","DOIUrl":"https://doi.org/10.37105/iboa.119","url":null,"abstract":"Within the framework of traditional approaches to checking for resistance of reinforced concrete buildings and structures to the progressive collapse development, membrane (chain) forces in a damaged structural system are calculated separately, without considering its non-linear bending behavior during the formation of the plastic hinges and without checking the possibility of achieving large deflections.The authors propose an approach to modelling a nonlinear quasi-static reaction of a damaged structural system in an accidental design situation. This approach considers non-linear bending and the resistance of reserved horizontal ties, considering their ultimate ductility. The authors verified the proposed approach based on the results of experimental studies by others researchers.An example of the application of the proposed approach in assessing the robustness of a structural system made of precast concrete with a sudden removal of the central column is considered. In accordance with the provisions of the energy approach, an analysis is made of the contribution of individual resistance mechanisms to the total quasi-static and dynamic resistance of the damaged structural system.We show that the proposed calculation model adequately describes the behavior of a damaged structural system in an accidental design situation, and therefore to carry out parametric studies and check the robustness of building structures.","PeriodicalId":227499,"journal":{"name":"Inżynieria Bezpieczeństwa Obiektów Antropogenicznych","volume":"50 22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125369823","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Life cycle engineering of a construction object 建筑对象的生命周期工程

Inżynieria Bezpieczeństwa Obiektów Antropogenicznych Pub Date : 2021-09-15 DOI: 10.37105/iboa.115

J. Obolewicz, Adam Baryłka

引用次数: 1

The analysis of the impact of environmental factors on turbine performance, develpoment of the models relating the periods between maintenances with selected maintenance factors 分析了环境因素对汽轮机性能的影响，建立了与选定维修因素有关的维修周期模型

Inżynieria Bezpieczeństwa Obiektów Antropogenicznych Pub Date : 2021-09-15 DOI: 10.37105/iboa.113

Magdalena Thielmann

{"title":"The analysis of the impact of environmental factors on turbine performance, develpoment of the models relating the periods between maintenances with selected maintenance factors","authors":"Magdalena Thielmann","doi":"10.37105/iboa.113","DOIUrl":"https://doi.org/10.37105/iboa.113","url":null,"abstract":"There are currently around 18,000 commissioned Gas Turbines in use worldwide, with almost 7,500 long-term service agreements[1]. At the same time, orders for new units increase year by year, and after a decrease in production in 2020 from 353 to 328 new units, from 2022 onwards, the level is planned to rise to the previous level of growth. Gas turbines operate worldwide and are exposed to variations in environmental conditions, such as changes in humidity, temperature, and salinity, which can significantly affect the efficiency and faster degradation of individual components. Based on the unit's maintenance report, there are more than 1,940 event alerts annually. A need exists to create a more dynamic analytical and numerical model that determines the impact of environmental variables on gas turbine stability. It is necessary to analyze and improve existing reliability models, which vary due to configurations and the impact of working conditions. The first step should be an analysis of the impact of environmental factors on turbine performance. This paper describes how the maintenance and inspection model developed from an average value over time model to a model tracking the actual degradation of gas turbines. It includes a comparison ofthree models used in the research, considering the developed methodology for selecting input parameters, their correlation, and their appropriateness for use in further analyses.","PeriodicalId":227499,"journal":{"name":"Inżynieria Bezpieczeństwa Obiektów Antropogenicznych","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122352117","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multivariate façade strengthening systems of textured layers in large slab panel buildings 大型楼板结构中织构层的多变量表面加固体系

Inżynieria Bezpieczeństwa Obiektów Antropogenicznych Pub Date : 2021-09-15 DOI: 10.37105/iboa.116

D. Tomaszewicz, Neli Budrevich

引用次数: 0

Safety aspects for the R290 (propane) as working medium in small air conditioning installations R290(丙烷)在小型空调装置中作为工作介质的安全问题

Inżynieria Bezpieczeństwa Obiektów Antropogenicznych Pub Date : 2021-06-30 DOI: 10.37105/iboa.110

A. Grzebielec, A. Rusowicz, A. Szelągowski

引用次数: 1

Experimental analysis of the stability of ferrofluids based on Iron Oxide powder 基于氧化铁粉末的铁磁流体稳定性的实验分析

Inżynieria Bezpieczeństwa Obiektów Antropogenicznych Pub Date : 2021-06-30 DOI: 10.37105/iboa.108

D. Zabek, A. Grzebielec, L. Cmok, Patricija Hribar Boštjančič, A. Mertelj

引用次数: 0