Roads and Bridges-Drogi i Mosty最新文献_第10页

Influence of the construction technology on the texture and roughness of concrete pavements 施工工艺对混凝土路面纹理和粗糙度的影响

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Roads and Bridges-Drogi i Mosty Pub Date : 2018-06-30 DOI: 10.7409/RABDIM.018.007

P. Mackiewicz, A. Szydło, B. Krawczyk

引用次数: 5

Assessment of the traffic noise reduction when using tramway screening 评估使用有轨电车隔音屏障减低交通噪音的效果

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Roads and Bridges-Drogi i Mosty Pub Date : 2018-06-30 DOI: 10.7409//RABDIM.018.008

Karolina Pietrzak, Z. Tokarski, K. Kowalski

引用次数: 1

Determination of load action ranges in static and dynamic tests of subgrades by applying rigid plates 用刚性板测定路基静态和动态试验中荷载作用范围

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Roads and Bridges-Drogi i Mosty Pub Date : 2018-03-30 DOI: 10.7409/RABDIM.018.005

Szymon Węgliński

引用次数: 3

Review of analytical-empirical methods for determining stiffness moduli of asphalt mixtures 沥青混合料刚度模量测定的分析-经验方法综述

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Roads and Bridges-Drogi i Mosty Pub Date : 2018-03-30 DOI: 10.7409/RABDIM.018.001

M. Słowik, Mikołaj Bartkowiak

引用次数: 2

Fire test of FRP members applied for the renovation of a steel railway bridge 某钢轨桥梁改造用玻璃钢构件防火试验

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Roads and Bridges-Drogi i Mosty Pub Date : 2018-03-30 DOI: 10.7409/RABDIM.018.002

K. Cábová, P. Ryjáček, Ondřej Hráský, L. Kolpaský, Jan Vůjtěch

{"title":"Fire test of FRP members applied for the renovation of a steel railway bridge","authors":"K. Cábová, P. Ryjáček, Ondřej Hráský, L. Kolpaský, Jan Vůjtěch","doi":"10.7409/RABDIM.018.002","DOIUrl":"https://doi.org/10.7409/RABDIM.018.002","url":null,"abstract":"Przedmiotem artykulu są badania pozarowe wyrobow z kompozytu FRP (polimeru zbrojonego wloknem szklanym), zabudowanych na wiadukcie kolejowym o konstrukcji stalowej. Na obiekcie o konstrukcji zbudowanej z dwoch glownych dźwigarow stalowych o rozpietości 9,9 m z torowiskiem na podkladach drewnianych zabudowano cztery rozne rodzaje plyt pomostowych z kompozytu FRP w obrebie podkladow i na wspornikach oraz systemy balustrad. Badane wyroby z FRP mialy rozne ksztalty geometryczne oraz klase reakcji na ogien. Na podstawie wynikow badan pozarowych stwierdzono mozliwośc wykorzystania w przewidzianym zastosowaniu wylącznie elementow kratowych bez obudowy lub z obudową jednostronną lub dwustronną. Wykluczono elementy z zebrami usztywniającymi biegnącymi prostopadle do osi podkladow, gdyz mogą sprzyjac przenoszeniu ognia na kolejne podklady. Wyklucza to mozliwośc ich stosowania na podkladach. Z uwagi na bezpieczenstwo pozarowe nie ma zadnych ograniczen dotyczących ksztaltu elementow balustrad mostowych. Dobrą charakterystyke odporności ogniowej wykazaly nawet profile o klasie C reakcji na ogien, co oznacza brak konieczności stosowania krat ognioodpornych z osnową z zywicy fenolowej. Na podstawie przeprowadzonych badan stwierdzono i zarekomendowano przydatnośc elementow z kompozytow FRP jako alternatywe dla konwencjonalnych materialow stalowych wykorzystywanych w remontach kolejowych obiektow mostowych.","PeriodicalId":44000,"journal":{"name":"Roads and Bridges-Drogi i Mosty","volume":"48 1","pages":"23-38"},"PeriodicalIF":0.5,"publicationDate":"2018-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83975792","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

Pavement deterioration model based on GPR datasets 基于GPR数据集的路面劣化模型

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Roads and Bridges-Drogi i Mosty Pub Date : 2018-03-30 DOI: 10.7409/RABDIM.018.004

A. Batrakova, D. Batrakov, M. Antyufeyeva

引用次数: 5

Suitability of aggregate recycled from concrete pavements for layers made of unbound and cement bound mixtures 从混凝土路面回收的骨料用于未粘结和水泥粘结混合料层的适用性

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Roads and Bridges-Drogi i Mosty Pub Date : 2018-01-01 DOI: 10.7409/RABDIM.018.003

B. Krawczyk, A. Szydło, P. Mackiewicz, Dariusz Dobrucki

引用次数: 7

Evaluation of skid resistance of exposed aggregate concrete pavement in the initial exploitation period 裸露骨料混凝土路面开发初期抗滑性能评价

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Roads and Bridges-Drogi i Mosty Pub Date : 2017-12-30 DOI: 10.7409/RABDIM.017.019

M. Wasilewska, W. Gardziejczyk, Pawel Gierasimiuk

{"title":"Evaluation of skid resistance of exposed aggregate concrete pavement in the initial exploitation period","authors":"M. Wasilewska, W. Gardziejczyk, Pawel Gierasimiuk","doi":"10.7409/RABDIM.017.019","DOIUrl":"https://doi.org/10.7409/RABDIM.017.019","url":null,"abstract":"The paper presents the evaluation of skid resistance of pavements in their early life on the basis of macrotexture and microtexture changes determined with the Circular Texture Meter (CTM) and the Dynamic Friction Tester (DFT). Tests were performed on two test pavement sections made from exposed aggregate concrete on S8 expressway located in Poland. The relevant parameters, namely the Mean Profile Depth MPD and the friction coefficient DFT 20 were measured after two and six weeks from pavement construction and then after three and sixteen months of traffic loads. No changes to the macrotexture were observed in these periods. However, significant changes were observed in the microtexture. The lowest values of DFT 20 were determined two weeks from paving, indicating the effect of increased slipperiness just after placement. This lower initial friction coefficient DFT 20 can be attributed to the presence of curing agent residue. Such residues are gradually removed from the pavement surface by weathering and trafficking and then the value of DFT 20 stabilizes and stays constant at a certain level. The coefficient of friction decreased by ca. 20% in the period between the third and the sixteenth month of trafficking. Finally, the results of evaluation were compared with the classification system developed in the U.S., based on the International Friction Index IFI .","PeriodicalId":44000,"journal":{"name":"Roads and Bridges-Drogi i Mosty","volume":"19 1","pages":"301-314"},"PeriodicalIF":0.5,"publicationDate":"2017-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76646094","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: 12

Lightweight concrete bridge deck slabs reinforced with GFRP composite bars 用GFRP复合筋加固的轻质混凝土桥面板

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Roads and Bridges-Drogi i Mosty Pub Date : 2017-12-30 DOI: 10.7409/RABDIM.017.018

A. Wiater, T. Siwowski

{"title":"Lightweight concrete bridge deck slabs reinforced with GFRP composite bars","authors":"A. Wiater, T. Siwowski","doi":"10.7409/RABDIM.017.018","DOIUrl":"https://doi.org/10.7409/RABDIM.017.018","url":null,"abstract":"The durability of typical reinforced concrete bridge deck slabs is several times shorter than the durability of the main girders or other basic elements of bridges. This is due to ever-increasing traffic loads and the aggressiveness of the environment, which is intensified by the need for winter maintenance of bridges. Over the past several years, numerous technological, material and construction solutions have been developed in order to extend the technical life of the deck slabs of bridge structures. These include, among others, the use of lightweight concrete and also reinforcements made of composite bars. By combining these two materials into lightweight concrete slabs that are reinforced with GFRP composites, it is possible to obtain a synergy of high strength and durability of GFRP composite and also a reduction of the self-weight of a bridge. The paper presents an overview of the applications of lightweight concrete and GFRP composite bars in the deck slabs of bridge structures. Limited research on this constructional solution, which was completed with its first national implementation on a road bridge, was also presented. Moreover, the directions of further studies, which are necessary to develop the design principles that would enable wider use of this type of bridge deck slabs, were also provided.","PeriodicalId":44000,"journal":{"name":"Roads and Bridges-Drogi i Mosty","volume":"27 1","pages":"279-293"},"PeriodicalIF":0.5,"publicationDate":"2017-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82274252","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: 5

Defining the domain and boundary conditions for finite element model of flexible road pavement 定义了柔性路面有限元模型的域和边界条件

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Roads and Bridges-Drogi i Mosty Pub Date : 2017-12-30 DOI: 10.7409/RABDIM.017.017

R. Nagórski, P. Tutka, M. Złotowska

引用次数: 3