In this paper, an assessment of the compound flood hazards in the city center of Rijeka due to the combined actions of the coastal and river flood sources was carried out, and hazard maps for the said area were prepared. Maps were created on a larger scale, taking into account various sources of flooding, and they show that the city of Rijeka has a high level of flood hazard, especially along the coastline and around the Rječina river where the highest flow velocities and water depths can be expected.
{"title":"Procjena opasnosti od složenih poplava u centru grada Rijeke uslijed kombiniranog djelovanja mora i rijeke","authors":"Marta Marija Bilić, Nino Krvavica","doi":"10.32762/zr.26.1.3","DOIUrl":"https://doi.org/10.32762/zr.26.1.3","url":null,"abstract":"In this paper, an assessment of the compound flood hazards in the city center of Rijeka due to the combined actions of the coastal and river flood sources was carried out, and hazard maps for the said area were prepared. Maps were created on a larger scale, taking into account various sources of flooding, and they show that the city of Rijeka has a high level of flood hazard, especially along the coastline and around the Rječina river where the highest flow velocities and water depths can be expected.","PeriodicalId":34493,"journal":{"name":"Zbornik Radova","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139247985","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}
Paulina Krolo, Lazar Lukačević, Antonio Bakran, Ivan Palijan, Tomislav Prlić, Natalija Bede Odorčić, Ivan Marović
Predstavljeno je istraživanje koje je provodeno u okviru znanstvenog-razvojnog projekta UNIRI INOVA „Inovativni priključak za spajanje konstrukcijskih elemenata od tankostijenih čeličnih C-profila“. Cilj projekta je pružiti bolje razumijevanje o ponašanju komponenti inovativnog priključka za spajanje elemenata od tankostijenih čeličnih C-profila
该报告是在 UNIRI INOVA 科学与开发项目 "用于连接薄壁 C 型材结构件的创新连接器 "的框架内进行的，其目的是更好地了解用于连接薄壁 C 型材结构件的创新连接器的组件。
{"title":"New Connectors for Joining Truss Beams to Vertical Stud Made of Thin-Walled Steel C-Profiles","authors":"Paulina Krolo, Lazar Lukačević, Antonio Bakran, Ivan Palijan, Tomislav Prlić, Natalija Bede Odorčić, Ivan Marović","doi":"10.32762/zr.26.1.7","DOIUrl":"https://doi.org/10.32762/zr.26.1.7","url":null,"abstract":"Predstavljeno je istraživanje koje je provodeno u okviru znanstvenog-razvojnog projekta UNIRI INOVA „Inovativni priključak za spajanje konstrukcijskih elemenata od tankostijenih čeličnih C-profila“. Cilj projekta je pružiti bolje razumijevanje o ponašanju komponenti inovativnog priključka za spajanje elemenata od tankostijenih čeličnih C-profila","PeriodicalId":34493,"journal":{"name":"Zbornik Radova","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139250392","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}
The paper discusses the concept of traffic flow described by hyperbolic differential equations. In this paper the Lighthill-Whitham-Richards model (LWR model) is used to describe traffic flow. The said model uses two parameters to describe the traffic flow – density and average speed of vehicles. Numerical approximation of the LWR model is formulated through scalar conservation laws. The finite volume method is used for numerical results. The term of shock wave and propagation of rarefaction wave in traffic flow are described. This paper focuses on numerical simulation of traffic flow via fluid dynamics model for a single road with a traffic light. The results obtained in this paper are compared with previous studies.
{"title":"Numerička simulacija prometnog toka","authors":"Ivka Brkić, Bojan Crnković","doi":"10.32762/zr.26.1.9","DOIUrl":"https://doi.org/10.32762/zr.26.1.9","url":null,"abstract":"The paper discusses the concept of traffic flow described by hyperbolic differential equations. In this paper the Lighthill-Whitham-Richards model (LWR model) is used to describe traffic flow. The said model uses two parameters to describe the traffic flow – density and average speed of vehicles. Numerical approximation of the LWR model is formulated through scalar conservation laws. The finite volume method is used for numerical results. The term of shock wave and propagation of rarefaction wave in traffic flow are described. This paper focuses on numerical simulation of traffic flow via fluid dynamics model for a single road with a traffic light. The results obtained in this paper are compared with previous studies.","PeriodicalId":34493,"journal":{"name":"Zbornik Radova","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139249791","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}
Pred projektante prometne infrastrukture stavlja se zahtjevan zadatak da pomire suprotstavljene ciljeve razvoja prometne infrastrukture prema prometnoj potražnji, a da svojim rješenjima smanje negativne učinke operacionalizacije sustava. Ovaj rad analizira primjenjivost mikrosimulacijskog prometnog modeliranja za analizu ekoloških i ekonomskih parametara koji se, uz funkcionalne parametre, ubrajaju u standardne kriterije ocjene varijantnih rješenja izgradnje i rekonstrukcije prometne infrastrukture. Studija slučaja napravljena je na primjeru rekonstrukcije raskrižju u urbanoj prometnoj mreži grada Osijeka. Rezultati pokazuju primjenjivost mikrosimulacija za ocjenu ekoloških i ekonomskih parametara u ocjeni varijantnih rješenja rekonstrukcije raskrižja, a brojčani pokazatelji pokazuju da se poboljšanjem funkcionalnih pokazatelja raskrižja mogu smanjiti i emisije ispušnih plinova od prometa.
面对交通压力，交通基础设施的设计者需要实现交通基础设施发展的既定目标，同时减少系统运行的负面影响。Ovaj rad analizira primjenjivost mikrosimulacijskog prometnog modeliranja za analizizu ekologških i ekonkomsih parametara koji se, uz funkcionalne parametre, ubrajaju u standardne kriterije ocenjene varijantnih rješenja izgradnje i rekonstrukcije prometne infrastruktury.案例研究以奥西耶克城市交通网络中一个交通圈的重建为例。研究结果表明，在评估重建交通圈的各种方案时，微观模拟适用于评估生态和经济参数，结果表明，改善交通圈的功能特性可以减少交通废气的排放。
{"title":"Primjenjivost ekoloških i ekonomskih parametara mikrosimulacijskog prometnog modeliranja u ocjeni rješenja rekonstrukcije raskrižja","authors":"Blaženka Maričević, Irena Ištoka Otković","doi":"10.32762/zr.26.1.10","DOIUrl":"https://doi.org/10.32762/zr.26.1.10","url":null,"abstract":"Pred projektante prometne infrastrukture stavlja se zahtjevan zadatak da pomire suprotstavljene ciljeve razvoja prometne infrastrukture prema prometnoj potražnji, a da svojim rješenjima smanje negativne učinke operacionalizacije sustava. Ovaj rad analizira primjenjivost mikrosimulacijskog prometnog modeliranja za analizu ekoloških i ekonomskih parametara koji se, uz funkcionalne parametre, ubrajaju u standardne kriterije ocjene varijantnih rješenja izgradnje i rekonstrukcije prometne infrastrukture. Studija slučaja napravljena je na primjeru rekonstrukcije raskrižju u urbanoj prometnoj mreži grada Osijeka. Rezultati pokazuju primjenjivost mikrosimulacija za ocjenu ekoloških i ekonomskih parametara u ocjeni varijantnih rješenja rekonstrukcije raskrižja, a brojčani pokazatelji pokazuju da se poboljšanjem funkcionalnih pokazatelja raskrižja mogu smanjiti i emisije ispušnih plinova od prometa.","PeriodicalId":34493,"journal":{"name":"Zbornik Radova","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139246966","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}
U radu su opisane osnovne karakteristike kapilarnosti kao jedne od osnovnih svojstva kapljevina. Definiran je pojam površinskog naprezanja, značajke kohezijskih i adhezijskih sila unutar kapljevine, način određivanja visine kapilarnog dizanja te najznačajnije metode za mjerenje kapilarnosti u praksi. Drugi dio rada baziran je na izradi eksperimentalnih pokusa u hidrotehničkom laboratoriju Građevinskog fakulteta u Rijeci. Prvi pokus je obuhvatio eksperimentalna mjerenja visina kapilarnog dizanja kapljevine između dviju staklenih pločica, a drugi određivanje visina kapilarnog dizanja kapljevine u malim uskim cjevčicama različitih promjera za četiri različite vrste kapljevina pri njihovim različitim temperaturama.
该系列介绍了作为液体基本特性之一的毛细管的基本特征。它定义了表面张力的概念、unutar kapljevine 内聚力和粘附力的特征、确定毛细管变形量的方法以及在实践中测量毛细管的最常用方法。Drugi dio rada baziran je na izradi eksperimentalnih pokusa u hidrotehničkom laboratoriju Građevinskog fakulteta u Rijeci.第一个实验是对两块玻璃板上液体的毛细管上升率进行实验测量，第二个实验是对四种不同类型的液体在不同温度下在不同直径的小Uski cjevčicama中的毛细管上升率进行估算。
{"title":"Eksperimentalno određivanje kapilarnosti pojedinih kapljevina","authors":"Marinko Petrović, Elvis Žic","doi":"10.32762/zr.26.1.4","DOIUrl":"https://doi.org/10.32762/zr.26.1.4","url":null,"abstract":"U radu su opisane osnovne karakteristike kapilarnosti kao jedne od osnovnih svojstva kapljevina. Definiran je pojam površinskog naprezanja, značajke kohezijskih i adhezijskih sila unutar kapljevine, način određivanja visine kapilarnog dizanja te najznačajnije metode za mjerenje kapilarnosti u praksi. Drugi dio rada baziran je na izradi eksperimentalnih pokusa u hidrotehničkom laboratoriju Građevinskog fakulteta u Rijeci. Prvi pokus je obuhvatio eksperimentalna mjerenja visina kapilarnog dizanja kapljevine između dviju staklenih pločica, a drugi određivanje visina kapilarnog dizanja kapljevine u malim uskim cjevčicama različitih promjera za četiri različite vrste kapljevina pri njihovim različitim temperaturama.","PeriodicalId":34493,"journal":{"name":"Zbornik Radova","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139247545","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}
U radu je prikazan postupak projektiranja konstrukcije lukobrana kao privezišta plovila u Uvali Velopin na Malom Lošinju primjenom BIM tehnologije (Building Information Modeling). Ukazano je na važnost ulaznih podataka te njihov utjecaj na projektiranje. Pokazana je prednost primjene BIM tehnologije u okvirima parametarskog modeliranja ovakve vrste konstrukcije. Složena geometrija, uvjeti terena i opterećenja zahtijevaju različite vrste konstruktivnih elemenata te višestruke analize, što, uz probleme uzrokovane valovima, predstavlja izazov za projektiranje. Primjena računalnih programa Allplan i Scia je omogućila brzu i jednostavnu izradu i analizu više varijantnih rješenja u svrhu odabira optimalnog rješenja koje zadovoljava uvjete nosivosti, uporabljivosti i troškova izgradnje.
{"title":"Primjena BIM-a u izradi varijantnih rješenja lukobrana u Uvali Velopin","authors":"Katarina Tutić, Neira Torić Malić","doi":"10.32762/zr.26.1.5","DOIUrl":"https://doi.org/10.32762/zr.26.1.5","url":null,"abstract":"U radu je prikazan postupak projektiranja konstrukcije lukobrana kao privezišta plovila u Uvali Velopin na Malom Lošinju primjenom BIM tehnologije (Building Information Modeling). Ukazano je na važnost ulaznih podataka te njihov utjecaj na projektiranje. Pokazana je prednost primjene BIM tehnologije u okvirima parametarskog modeliranja ovakve vrste konstrukcije. Složena geometrija, uvjeti terena i opterećenja zahtijevaju različite vrste konstruktivnih elemenata te višestruke analize, što, uz probleme uzrokovane valovima, predstavlja izazov za projektiranje. Primjena računalnih programa Allplan i Scia je omogućila brzu i jednostavnu izradu i analizu više varijantnih rješenja u svrhu odabira optimalnog rješenja koje zadovoljava uvjete nosivosti, uporabljivosti i troškova izgradnje.","PeriodicalId":34493,"journal":{"name":"Zbornik Radova","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139249164","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}
A beam model is experimentally subjected to multiple support seismic excitation and in parallel, a numerical model for simulation of this problem is developed. The goal is to better understand the behaviour of long slender structures subjected to multiple support excitation based on analyses of experimental results, and to validate the numerical model using experimental results. In this paper the effect of the number of added masses to the dynamic response and the beneficial (in this case) effect of the time delay of excitation between the supports to the displacements of the structure are presented.
{"title":"Utjecaj višestruke seizmičke pobude oslonaca na vitke dugačke konstrukcije","authors":"Paolo Fabijan, Nina Čeh","doi":"10.32762/zr.26.1.8","DOIUrl":"https://doi.org/10.32762/zr.26.1.8","url":null,"abstract":"A beam model is experimentally subjected to multiple support seismic excitation and in parallel, a numerical model for simulation of this problem is developed. The goal is to better understand the behaviour of long slender structures subjected to multiple support excitation based on analyses of experimental results, and to validate the numerical model using experimental results. In this paper the effect of the number of added masses to the dynamic response and the beneficial (in this case) effect of the time delay of excitation between the supports to the displacements of the structure are presented.","PeriodicalId":34493,"journal":{"name":"Zbornik Radova","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139246698","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}
In the field of spatial management, especially from the point of view of spatial economics, many decisions have long-term effects on the environment. Therefore, it is essential that the boundary conditions of the decision-making process are not only transparent, but also aligned with the sustainable development goals. At the same time, road infrastructure represents one of the most complex linear structures in the area, and its comprehensive management should respond to various types of problems, from structured to unstructured, which occur at all levels of decision-making. To solve such problems, management information systems (UIS) can help decision-makers to apply appropriate models and methods during the decision-making process. This paper provides an overview of the different types of UIS that can be used in road infrastructure management. The method of selecting an appropriate UIS and the method of interaction between data and models in such a management system are also discussed.
{"title":"Application of Management Information Systems in Road Infrastructure Management","authors":"I. Marović, R. Maršanić, Marijana Cuculić","doi":"10.32762/zr.26.1.11","DOIUrl":"https://doi.org/10.32762/zr.26.1.11","url":null,"abstract":"In the field of spatial management, especially from the point of view of spatial economics, many decisions have long-term effects on the environment. Therefore, it is essential that the boundary conditions of the decision-making process are not only transparent, but also aligned with the sustainable development goals. At the same time, road infrastructure represents one of the most complex linear structures in the area, and its comprehensive management should respond to various types of problems, from structured to unstructured, which occur at all levels of decision-making. To solve such problems, management information systems (UIS) can help decision-makers to apply appropriate models and methods during the decision-making process. This paper provides an overview of the different types of UIS that can be used in road infrastructure management. The method of selecting an appropriate UIS and the method of interaction between data and models in such a management system are also discussed.","PeriodicalId":34493,"journal":{"name":"Zbornik Radova","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139248443","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}
The paper describes in detail the tensile testing of steel for the reinforcement according to the HRN EN ISO 15630‐1:2010 norm. The aforementioned norm refers to the HRN EN ISO 6892‐1:2016 norm, which, due to the dependence of the mechanical properties of steel on the test speed, recommends method A that uses strain control. Tensile testing of steel for the reinforcement B500B was performed on three samples using method A1 of the same norm. The aim of the paper is to bring readers closer to the issue of ensuring the conditions for tensile testing of steel for the reinforcement with strain control and to provide guidelines for the application of the norm. The results of tensile test on steel for the reinforcement show that the Zwick Z 600E universal testing machine can provide strict tolerance limits on strain control rates.
本文详细介绍了根据 HRN EN ISO 15630-1:2010 规范对钢筋进行拉伸测试的情况。上述规范参考了 HRN EN ISO 6892-1:2016规范，由于钢材的机械性能取决于测试速度，因此推荐使用应变控制的方法A。使用同一规范中的 A1 方法对三个钢筋 B500B 样品进行了拉伸测试。本文旨在让读者更深入地了解如何确保在应变控制下对钢筋进行拉伸试验的条件，并为规范的应用提供指导。钢筋拉伸试验的结果表明，Zwick Z 600E 万能试验机可以提供严格的应变控制率公差限制。
{"title":"Tensile Testing of Steel for the Reinforcement","authors":"Željko Smolčić, K. Košutić","doi":"10.32762/zr.26.1.6","DOIUrl":"https://doi.org/10.32762/zr.26.1.6","url":null,"abstract":"The paper describes in detail the tensile testing of steel for the reinforcement according to the HRN EN ISO 15630‐1:2010 norm. The aforementioned norm refers to the HRN EN ISO 6892‐1:2016 norm, which, due to the dependence of the mechanical properties of steel on the test speed, recommends method A that uses strain control. Tensile testing of steel for the reinforcement B500B was performed on three samples using method A1 of the same norm. The aim of the paper is to bring readers closer to the issue of ensuring the conditions for tensile testing of steel for the reinforcement with strain control and to provide guidelines for the application of the norm. The results of tensile test on steel for the reinforcement show that the Zwick Z 600E universal testing machine can provide strict tolerance limits on strain control rates.","PeriodicalId":34493,"journal":{"name":"Zbornik Radova","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139246411","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}
The City of Bakar has transformed part of its waterfront which until recently was used exclusively for industrial purposes. Intervention resulted in a modernly designed public space. Although it seems that there are no comparable features with a developed and large city like New York, this paper will present two case studies that prove the opposite. The aim of the paper is to present the comparison and results of two waterfront brownfield transformations. The research includes methods of transforming waterfront areas in such a way that they become accessible to citizens and significantly improve the residents' life and urban space quality. The paper presents the application of certain methods during planning, designing, and landscaping, as well as the comparative results of different scales of coastal transformation.
{"title":"Preobrazba industrijskog obalnog područja u javni prostor","authors":"Martina Gudac Cvelic, Tamara Zaninović","doi":"10.32762/zr.26.1.2","DOIUrl":"https://doi.org/10.32762/zr.26.1.2","url":null,"abstract":"The City of Bakar has transformed part of its waterfront which until recently was used exclusively for industrial purposes. Intervention resulted in a modernly designed public space. Although it seems that there are no comparable features with a developed and large city like New York, this paper will present two case studies that prove the opposite. The aim of the paper is to present the comparison and results of two waterfront brownfield transformations. The research includes methods of transforming waterfront areas in such a way that they become accessible to citizens and significantly improve the residents' life and urban space quality. The paper presents the application of certain methods during planning, designing, and landscaping, as well as the comparative results of different scales of coastal transformation.","PeriodicalId":34493,"journal":{"name":"Zbornik Radova","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139248259","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}
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