Archives of Civil Engineering最新文献_第9页

Impact of decision model structure on the selection of a telecommunications tower footing reinforcement alternative 决策模型结构对电信塔基础加固方案选择的影响

Archives of Civil Engineering Pub Date : 2023-11-06 DOI: 10.24425/ace.2021.137170

{"title":"Impact of decision model structure on the selection of a telecommunications tower footing reinforcement alternative","authors":"","doi":"10.24425/ace.2021.137170","DOIUrl":"https://doi.org/10.24425/ace.2021.137170","url":null,"abstract":"In recent years, we have been able to observe a dynamic development of MCDA (multi-criteria decision analysis) methods, which have become widely used in various sectors, including construction. These methods are characterised by simplicity and one of their key advantages is their simple modelling of non-linear dependencies within decision problems and their analysis under the conditions of incomplete, uncertain and hard-to-measure information. The universality and simple use of these methods does not, however, free the decision-maker from the necessity to adopt the proper approach to modelling and analysing specific decision problems. To highlight the fact that it is the character of the problem that should determine the selection of the method of analysing it and not the other way around, the authors assessed the AHP (Analytic Hierarchy Process) and the ANP (Analytic Network Process) method in terms of verifying the impact of the different decision model structures on analysis outcomes and analysed their sensitivity to input data changes. This analysis was based on the example of selecting a telecommunications tower footing reinforcement alternative. The findings confirmed the significant impact of decision model structure on the ranking of the analysed alternatives.","PeriodicalId":45753,"journal":{"name":"Archives of Civil Engineering","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135679865","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

Application of comprehensive reinforcement technology in high-rise building 综合加固技术在高层建筑中的应用

Archives of Civil Engineering Pub Date : 2023-11-06 DOI: 10.24425/ace.2021.137165

Cheng Heping, Yao Wenchi

{"title":"Application of comprehensive reinforcement technology in high-rise building","authors":"Cheng Heping, Yao Wenchi","doi":"10.24425/ace.2021.137165","DOIUrl":"https://doi.org/10.24425/ace.2021.137165","url":null,"abstract":"In the structural reinforcement of a high-rise residential building in Changzhou city, Jiangsu province, China, the technology of prestressed steel bar strengthening shear wall, which was initiated in China, was applied. Combined with the engineering quality inspection report, the project characteristics and the requirements of the construction party, various methods, such as increasing cross-section reinforcement method and staged replacement concrete reinforcement method, were comprehensively used to treat and reinforce the structures with different quality problems and different parts. In general, the stress and strain of the newly added part always lags behind the stress and strain of the original structure. This will cause the stress of the original structure is too high and the deformation is large, while the stress of the new part is still at a low level, which cannot fully play its role and its due reinforcement effect. Prestressed steel bar reinforced shear wall technology, through the prestressed steel bar on the prestressed steel bar, which is a good solution to this problem, avoid the phenomenon of stress lag, and ultimately not only shorten the construction period of reinforcement, but also ensure the quality of reinforcement and user use area, successfully passed the reinforcement special acceptance. The monitoring data also proved that the reinforcement measures adopted are safe, reliable and economical. This paper can provide reference for the effective development of similar reinforcement projects.","PeriodicalId":45753,"journal":{"name":"Archives of Civil Engineering","volume":"14 31","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135545585","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: 1

Stochastic number of concrete families and the likelihood of such a value 具体族的随机数目和这种值的似然

Archives of Civil Engineering Pub Date : 2023-11-06 DOI: 10.24425/ace.2022.140154

{"title":"Stochastic number of concrete families and the likelihood of such a value","authors":"","doi":"10.24425/ace.2022.140154","DOIUrl":"https://doi.org/10.24425/ace.2022.140154","url":null,"abstract":": Modern construction standards, both from the ACI, EN, ISO, as well as EC group, introduced numerous statistical procedures for the interpretation of concrete compressive strength results obtained on an ongoing basis (in the course of structure implementation), the values of which are subject to various impacts, e.g., arising from climatic conditions, manufacturing variability and component property variability, which are also described by speciﬁc random variables. Such an approach is a consequence of introducing the method of limit states in the calculations of building structures, which takes into account a set of various factors inﬂuencing structural safety. The term “concrete family” was also introduced, however, the principle of distributing the result or, even more so, the statistically signiﬁcant size of results within a family was not speciﬁed. Deﬁciencies in the procedures were partially supplemented by the authors of the article, who published papers in the ﬁeld of distributing results of strength test time series using the Pearson, 𝑡 -Student, and Mann–Whitney U tests. However, the publications of the authors deﬁne neither the size of obtained subset and their distribution nor the probability of their occurrence. This study ﬁlls this gap by showing the size of a statistically determined concrete family, with a deﬁned distribution of the probability of its isolation.","PeriodicalId":45753,"journal":{"name":"Archives of Civil Engineering","volume":"12 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135634471","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

Proposal for application of risk analysis to assess robustness of floor slabs pre-stressed with unbonded tendoms 应用风险分析评估无粘结预应力楼板稳健性的建议

Archives of Civil Engineering Pub Date : 2023-11-06 DOI: 10.24425/ace.2022.140166

引用次数: 1

Estimate final cost of roads using support vector machine 使用支持向量机估计道路的最终成本

Archives of Civil Engineering Pub Date : 2023-11-06 DOI: 10.24425/ace.2022.143061

引用次数: 0

Marshall stability of porous asphalt mixture incorporating kenaf fiber 含红麻纤维多孔沥青混合料的马歇尔稳定性

Archives of Civil Engineering Pub Date : 2023-11-06 DOI: 10.24425/ace.2022.140174

{"title":"Marshall stability of porous asphalt mixture incorporating kenaf fiber","authors":"","doi":"10.24425/ace.2022.140174","DOIUrl":"https://doi.org/10.24425/ace.2022.140174","url":null,"abstract":": Porous asphalt mixture (PA), known as open-graded surfaces over a stone bed underneath, allows water to go through. These factors can aﬀect the porous asphalt mixture adhesive strength. The high amount of course aggregate promotes the structure of air voids have certain impacts on the acoustic properties of porous asphalt. The materials properties are consisting of both aggregate and bitumen tests. This study also details out the aggregates sieve analysis test to develop new aggregate gradation for PA. According to ﬁve ASEAN countries’ speciﬁcations, the sieve analysis test was done. The countries included are Malaysia, Vietnam, Thailand, Singapore, and Indonesia. The test for the binder includes the softening point, penetration, and ductility. This study also investigates the addition of kenaf ﬁber in the mixture as an additive. Mechanical performance test for PA using Marshall Stability test to identify the strength and the properties of the conventional PA with the addition of kenaf ﬁber compared to the new gradation of PA incorporating kenaf ﬁber. From the results, the addition of 0.3% kenaf modiﬁed PA improved the performance of PA in terms of Marshall Stability and volumetric properties.","PeriodicalId":45753,"journal":{"name":"Archives of Civil Engineering","volume":"2017 7","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135635743","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: 3

BIM in the construction process – selected problems at the stage of implementation in Polish road engineering BIM在施工过程中的应用——波兰道路工程实施阶段的选择问题

Archives of Civil Engineering Pub Date : 2023-11-06 DOI: 10.24425/ace.2022.140190

{"title":"BIM in the construction process – selected problems at the stage of implementation in Polish road engineering","authors":"","doi":"10.24425/ace.2022.140190","DOIUrl":"https://doi.org/10.24425/ace.2022.140190","url":null,"abstract":": The digitalisation of the construction process is a phenomenon that has been signiﬁcantly accelerated in recent years. BIM (Building Information Modeling) technology is becoming increasingly popular with designers, contractors and investors and is being used, mainly in relation to buildings. In communication objects, the application of BIM is much more diﬃcult, as conﬁrmed by the shifting schedules during implementation trials in road design. And yet, BIM is not only about the design or execution of construction works, it is worth taking advantage of the new possibilities especially at the stage of using the facility. BIM in transportation infrastructure is already used in other countries, mainly in Scandinavia, where work on its implementation began at the beginning of this century. The preparation of appropriate procedures and standards, adjusted to national realities, requires gathering experience on pilot investments. The paper presents an analysis of the necessary initial data which will make it possible to apply BIM in the Polish road construction industry. Moreover, the main risks occurring at various stages of the construction process are presented. The aim of the article is to indicate the necessary actions that will allow the advantages of BIM technology to be used more fully in road investments. The implementation of BIM in Polish road construction is not a distant future but rather \"tomorrow\", so it is worth knowing the limitations and preparing for the upcoming changes.","PeriodicalId":45753,"journal":{"name":"Archives of Civil Engineering","volume":"1990 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135636100","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: 1

Concept of using the BIM technology to support the defect management process 使用BIM技术支持缺陷管理流程的概念

Archives of Civil Engineering Pub Date : 2023-11-06 DOI: 10.24425/ace.2021.137164

引用次数: 0

Analysis of Positive Elevation Effect and Prediction of Vibration Velocity of Bench Blasting Vibration 台阶爆破正标高效应分析及振动速度预测

Archives of Civil Engineering Pub Date : 2023-11-06 DOI: 10.24425/ace.2021.136492

X.J. Zhang, H.M. An

引用次数: 0

Accident costs on the railway network in the Czech national conditions 事故成本在捷克铁路网上的国情

Archives of Civil Engineering Pub Date : 2023-11-06 DOI: 10.24425/ace.2022.140187

Tomáš Funk, Vít Hromádka, Jana Korytárová, Eva Vítková

引用次数: 0