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Experimental study of failure of glulam-concrete composite beams 胶合梁-混凝土复合梁失效实验研究
Pollack Periodica Pub Date : 2024-02-07 DOI: 10.1556/606.2023.00946
Tamás Juhász, Yishi Lee, Rose Holtzman, J. Balogh
{"title":"Experimental study of failure of glulam-concrete composite beams","authors":"Tamás Juhász, Yishi Lee, Rose Holtzman, J. Balogh","doi":"10.1556/606.2023.00946","DOIUrl":"https://doi.org/10.1556/606.2023.00946","url":null,"abstract":"This paper is dedicated to the memory of Dr. Miklós Iványi, who instilled in the authors an appreciation for experimental investigations, which are foundational to understanding material and structural behavior. Timber-concrete composite structures are increasingly adopted for new buildings due to their favorable sustainability parameters and the increased availability of cross laminated timber. For larger spans, however, solid timber floors lead to higher timber volumes and the use of glulam beams may become necessary for a more efficient use of wood. This paper presents laboratory tests of glulam-concrete composite beams and is the first in a series of two papers on investigating the associated failure mechanisms. Three full-scale glulam-concrete beam specimens were studied. The glulam and concrete are monolithically interconnected using a continuous layer of adhesive. Shear reinforcement was added to the glulam beams to allow for failure mode control. Static load tests to failure were conducted along with acoustic emission monitoring to track the progression of the failure. The results indicate that the shear reinforcement of the glulam layer affects the load capacity of the composite beam through shifting the failure from a shear to a tension failure mode. Similar glulam-concrete beams can enable larger span applications for buildings and bridges while maintaining an attractive sustainability performance.","PeriodicalId":35003,"journal":{"name":"Pollack Periodica","volume":"8 1‐2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139794731","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
Design flood hydrographs based on scaled flood data using vine copulas 使用藤蔓共生公式，根据缩放的洪水数据设计洪水水文图
Pollack Periodica Pub Date : 2024-02-07 DOI: 10.1556/606.2023.00827
Anna Liová, R. Výleta, K. Hlavčová, S. Kohnová, T. Bacigál, Jana Poórová, J. Szolgay
{"title":"Design flood hydrographs based on scaled flood data using vine copulas","authors":"Anna Liová, R. Výleta, K. Hlavčová, S. Kohnová, T. Bacigál, Jana Poórová, J. Szolgay","doi":"10.1556/606.2023.00827","DOIUrl":"https://doi.org/10.1556/606.2023.00827","url":null,"abstract":"Design flood hydrographs are often used to project safe and cost-effective hydraulic structures. This study proposes a system based on a combination of empirical and statistical approaches for constructing synthetic design flood hydrographs, that practitioners can easily apply. The system uses scaled observed seasonal flood hydrographs and respects the dependence structure among the flood peaks, volumes, and durations deduced from the set of seasonal flood hydrographs observed. The method was developed and tested based on data from the Horné Orešany reservoir in Slovakia.","PeriodicalId":35003,"journal":{"name":"Pollack Periodica","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139796799","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
Behavior of helical reinforced concrete columns subjected to cyclic loading 螺旋钢筋混凝土柱在循环荷载作用下的行为
Pollack Periodica Pub Date : 2024-02-07 DOI: 10.1556/606.2023.00912
Alaa M. Al-Habbobi, Mohsen A. Habelalmateen, Nassr N. Salman
{"title":"Behavior of helical reinforced concrete columns subjected to cyclic loading","authors":"Alaa M. Al-Habbobi, Mohsen A. Habelalmateen, Nassr N. Salman","doi":"10.1556/606.2023.00912","DOIUrl":"https://doi.org/10.1556/606.2023.00912","url":null,"abstract":"Helical concrete columns are a new type of structural members which arose in new twisted buildings to satisfy architectural purposes. Helical concrete columns have a unique geometry which depends on the values of twist angle (ϕ) and the tilt distance of the center of rotation. According to the ACI T1.1R-01:2001 guidelines, a combined effect of axial load and lateral cyclic displacement protocol was applied to twelve specimens. Nonlinear finite element method was used to conduct the analysis and the numerical simulation for the helical reinforced concrete columns. The findings of the study revealed that the value of the buckling load, lateral displacement and the drift angle of helical concrete columns are significantly affected by the tilting distance of the rotation center and the twist angle.","PeriodicalId":35003,"journal":{"name":"Pollack Periodica","volume":"53 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139857481","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
Behavior of helical reinforced concrete columns subjected to cyclic loading 螺旋钢筋混凝土柱在循环荷载作用下的行为
Pollack Periodica Pub Date : 2024-02-07 DOI: 10.1556/606.2023.00912
Alaa M. Al-Habbobi, Mohsen A. Habelalmateen, Nassr N. Salman
{"title":"Behavior of helical reinforced concrete columns subjected to cyclic loading","authors":"Alaa M. Al-Habbobi, Mohsen A. Habelalmateen, Nassr N. Salman","doi":"10.1556/606.2023.00912","DOIUrl":"https://doi.org/10.1556/606.2023.00912","url":null,"abstract":"Helical concrete columns are a new type of structural members which arose in new twisted buildings to satisfy architectural purposes. Helical concrete columns have a unique geometry which depends on the values of twist angle (ϕ) and the tilt distance of the center of rotation. According to the ACI T1.1R-01:2001 guidelines, a combined effect of axial load and lateral cyclic displacement protocol was applied to twelve specimens. Nonlinear finite element method was used to conduct the analysis and the numerical simulation for the helical reinforced concrete columns. The findings of the study revealed that the value of the buckling load, lateral displacement and the drift angle of helical concrete columns are significantly affected by the tilting distance of the rotation center and the twist angle.","PeriodicalId":35003,"journal":{"name":"Pollack Periodica","volume":"73 S105","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139797328","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
Managing the thermal impact of green walls on internal spaces of AQABA buildings 管理绿墙对 AQABA 建筑内部空间的热影响
Pollack Periodica Pub Date : 2024-01-16 DOI: 10.1556/606.2023.00825
Maryam Al-Khlouf, Sultan Tarawneh
{"title":"Managing the thermal impact of green walls on internal spaces of AQABA buildings","authors":"Maryam Al-Khlouf, Sultan Tarawneh","doi":"10.1556/606.2023.00825","DOIUrl":"https://doi.org/10.1556/606.2023.00825","url":null,"abstract":"Green wall systems have been introduced all over the world as a sustainable solution to combat the hot environment inside buildings and provide thermal comfort by improving the thermal efficiency of the buildings. This study aims to find out whether green walls can be used to manage the inside thermal conditions of Aqaba buildings. It is intended to lessen the impact of Aqaba's harsh warm climate on internal building spaces and achieve a thermal comfort level. A physical live experiment was used to detect the thermal impact of green walls on internal spaces. The thermal performances of two identical real-scale test rooms, one of which had a fixed green facade, were compared. This study concludes that green facades have a significant potential to promote buildings' thermal behaviour in the hot summer of Aqaba and thermally similar regions.","PeriodicalId":35003,"journal":{"name":"Pollack Periodica","volume":"33 51","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139528483","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
Irregular boundaries stereo images dataset creating using depth estimation model 利用深度估计模型创建不规则边界立体图像数据集
Pollack Periodica Pub Date : 2023-10-19 DOI: 10.1556/606.2023.00906
Muntasser A. Wahsh, Zainab M. Hussain
{"title":"Irregular boundaries stereo images dataset creating using depth estimation model","authors":"Muntasser A. Wahsh, Zainab M. Hussain","doi":"10.1556/606.2023.00906","DOIUrl":"https://doi.org/10.1556/606.2023.00906","url":null,"abstract":"Abstract This paper introduces a stereoscopic image and depth dataset created using a deep learning model. It addresses the challenge of obtaining accurate and annotated stereo image pairs with irregular boundaries for deep learning model training. Stereoscopic image and depth dataset provides a unique resource for training deep learning models to handle irregular boundary stereoscopic images, which are valuable for real-world scenarios with complex shapes or occlusions. The dataset is created using monocular depth estimation, a state-of-the-art depth estimation model, and it can be used in applications like rectifying images, estimating depth, detecting objects, and autonomous driving. Overall, this paper presents a novel dataset that demonstrates its effectiveness and potential for advancing stereo vision and developing deep learning models for computer vision applications.","PeriodicalId":35003,"journal":{"name":"Pollack Periodica","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135781719","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
Optimizing asphalt foaming using neural network 应用神经网络优化沥青发泡
Pollack Periodica Pub Date : 2023-10-17 DOI: 10.1556/606.2023.00896
Ali Saleh, László Gáspár
{"title":"Optimizing asphalt foaming using neural network","authors":"Ali Saleh, László Gáspár","doi":"10.1556/606.2023.00896","DOIUrl":"https://doi.org/10.1556/606.2023.00896","url":null,"abstract":"Abstract This study uses a three-layer backpropagation neural network combined with particle swarm optimization to control the foamed bitumen in cold recycling technology. The foaming process of bitumen is non-linear and depends on dynamic temperature. By developing a neural network model, this study effectively captures the complex relationships between temperature, water content, air pressure, and the expansion ratio and half-life of foamed bitumen. The integration of particle swarm optimization enhances the accuracy and convergence of the neural network model by optimizing the initial weights. This optimization process improves the model's ability to predict and control the quality of foamed bitumen accurately. It serves as a valuable tool for the rapid development of high-quality cold asphalt design.","PeriodicalId":35003,"journal":{"name":"Pollack Periodica","volume":"168 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135993859","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
One-at-a-Time sensitivity study of a tree burning simulation 树木燃烧模拟的一次一次灵敏度研究
Pollack Periodica Pub Date : 2023-10-17 DOI: 10.1556/606.2023.00850
Flóra Hajdu, László Környei, Rajmund Kuti
{"title":"One-at-a-Time sensitivity study of a tree burning simulation","authors":"Flóra Hajdu, László Környei, Rajmund Kuti","doi":"10.1556/606.2023.00850","DOIUrl":"https://doi.org/10.1556/606.2023.00850","url":null,"abstract":"Abstract The aim of the research was to carry out the One-at-a-Time sensitivity analysis of a tree burning experiment simulation with a novel fuzzy logic-based method. It was observed that the precent of the remaining tree is sensitive to the moisture content, the crown-base diameter and the tree height. The other variables, which are maximum mass loss rate, maximum heat release rate, and maximum temperature at the top of the tree are moderately sensitive or not sensitive to the selected parameters. The presented results can be used in sensitivity studies and wildfire simulations.","PeriodicalId":35003,"journal":{"name":"Pollack Periodica","volume":"340 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135995285","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
Morris method supporting building optimization 莫里斯方法支持建筑优化
Pollack Periodica Pub Date : 2023-10-17 DOI: 10.1556/606.2023.00752
Nándor Vincze, Kristóf Roland Horváth, István Kistelegdi, Tamás Storcz, Zsolt Ercsey
{"title":"Morris method supporting building optimization","authors":"Nándor Vincze, Kristóf Roland Horváth, István Kistelegdi, Tamás Storcz, Zsolt Ercsey","doi":"10.1556/606.2023.00752","DOIUrl":"https://doi.org/10.1556/606.2023.00752","url":null,"abstract":"Abstract As part of the energy design synthesis method, complex dynamic building simulation database was created with IDA ICE code for all family house building configurations for a considered problem. In this paper, the annual heat energy demand output parameter is considered to serve as basis of a building energy design investigation. The sensitivity analysis performed by Morris' elementary effect method was used. As the result of the sensitivity analysis of the output parameter, the most important input parameters can be identified, that influence the buildings' energy efficiency, that can support further building designs.","PeriodicalId":35003,"journal":{"name":"Pollack Periodica","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136032625","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
Mechanism of scour around two piers 两桥墩周围冲刷机理研究
Pollack Periodica Pub Date : 2023-10-17 DOI: 10.1556/606.2023.00864
Rahul Malik, Baldev Setia
{"title":"Mechanism of scour around two piers","authors":"Rahul Malik, Baldev Setia","doi":"10.1556/606.2023.00864","DOIUrl":"https://doi.org/10.1556/606.2023.00864","url":null,"abstract":"Abstract Scour around the bridge piers is the main cause of bridge failure below any bridge pier placed within the waterways. It is more than hundred years back a number of researchers described the vortex shedding phenomenon and the resulting Aeolian tones from a circular cylinder. Since then there have been a large number of investigations dealing with various aspects of this phenomenon. In many practical works and situations, flow takes place around more than one obstruction and objects in close proximity. Invariably in all these cases, interference effects occur and the forces on the obstructions are much influenced by these effects. These effects play a key role in the structures like flow-induced vibration of TV and transmission towers, and in many other practical situations. In this research paper the changes in the flow field that occur due to the interference effects are shown, analysed and the results as given in literature are compared with the present experimental work. The features have been brought out in this paper mainly make use of stand and geometry of circular cylinders in close proximity and the flow part of geometry in side by side arrangement.","PeriodicalId":35003,"journal":{"name":"Pollack Periodica","volume":"93 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136033226","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
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