Baltic Journal of Road and Bridge Engineering最新文献_第7页

Experimental Study of Railway Trackbed Pressure Distribution Under Dynamic Loading 动载作用下铁路道床压力分布的试验研究

IF 1.1 4区工程技术

Baltic Journal of Road and Bridge Engineering Pub Date : 2019-12-27 DOI: 10.7250/bjrbe.2019-14.455

M. Sysyn, V. Kovalchuk, O. Nabochenko, Y. Kovalchuk, O. Voznyak

{"title":"Experimental Study of Railway Trackbed Pressure Distribution Under Dynamic Loading","authors":"M. Sysyn, V. Kovalchuk, O. Nabochenko, Y. Kovalchuk, O. Voznyak","doi":"10.7250/bjrbe.2019-14.455","DOIUrl":"https://doi.org/10.7250/bjrbe.2019-14.455","url":null,"abstract":"Reliable and durable operation of the railway track under the dynamic load of the rolling stock depends considerably on the ability of the ballast layer to get the load from the sleepers and distribute it to the subgrade. In this paper, the experimental study of the distribution properties of the ballast layer under the impact of dynamic loading depending on the density of the ballast layer is carried out. The ballast behaviour during load cycles is estimated by pressure measurements at the ballast prism base along the axis of a sleeper with simultaneous video observation of the ballast particles movement through transparent sidewalls of the box with crushed stone. Measurements of pressure distribution are carried out with the developed microcontroller system of measurements and developed load cells. The system allows performing multi-point measurements of stress in combination with measurements of acceleration and photogrammetry. The results of measurements showed a significant effect of the ballast layer consolidation on the distribution of stresses under the sleeper. The performed research opens up opportunities for practical improvement of the existing types of track structures and the technology of the ballast layer tamping in terms to provide the optimal conditions for the ballast layer operation.","PeriodicalId":55402,"journal":{"name":"Baltic Journal of Road and Bridge Engineering","volume":"14 1","pages":"504-520"},"PeriodicalIF":1.1,"publicationDate":"2019-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49283766","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 12

Potential of Using Imidazoline in Recycled Asphalt Pavement 咪唑啉在再生沥青路面中的应用潜力

IF 1.1 4区工程技术

Baltic Journal of Road and Bridge Engineering Pub Date : 2019-12-27 DOI: 10.7250/bjrbe.2019-14.456

R. Jurczak, P. Mieczkowski, B. Budziński

引用次数: 4

S-Shaped Transition Curves as an Element of Reverse Curves in Road Design S形缓和曲线作为道路设计中反曲线的组成部分

IF 1.1 4区工程技术

Baltic Journal of Road and Bridge Engineering Pub Date : 2019-12-27 DOI: 10.7250/bjrbe.2019-14.454

A. Kobryń, Piotr Stachera

{"title":"S-Shaped Transition Curves as an Element of Reverse Curves in Road Design","authors":"A. Kobryń, Piotr Stachera","doi":"10.7250/bjrbe.2019-14.454","DOIUrl":"https://doi.org/10.7250/bjrbe.2019-14.454","url":null,"abstract":"A road designing involves horizontal and vertical alignment. The horizontal geometry is formed by straight and curvilinear sections that are traditionally formed using circular and transition curves (mainly the clothoid). Different geometric systems that are designed using circular and transition curves are between others circular curves with symmetrical or unsymmetrical clothoids, combined curves, oval curves and reverse curves. Designing these systems is quite complex. Therefore, so-called S -shaped transition curves are an alternative to traditional approaches. These curves are known from literature and are modern geometric tools for the shaping of reverse curves. The paper analyses the basic geometric properties of these curves as well as compare to the geometry of the appropriate geometric systems, which are formed with clothoid or using S-shaped transition curves. In addition, a procedure for designing reverse curves using S -shaped transition curves was proposed. Another research topic was the comparison of the analysed reverse curves (created using polynomial transition curves) with traditional curves (created using the clothoid). The results of the studies, despite the noticeable differences in the geometry of the compared components, confirm the practical usefulness of the S -shaped transition curves for designing the geometry of the route.","PeriodicalId":55402,"journal":{"name":"Baltic Journal of Road and Bridge Engineering","volume":"14 1","pages":"484-503"},"PeriodicalIF":1.1,"publicationDate":"2019-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47662165","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Modal testing of an isolated overpass bridge in its construction stages 孤立立交桥施工阶段模态试验研究

IF 1.1 4区工程技术

Baltic Journal of Road and Bridge Engineering Pub Date : 2018-03-27 DOI: 10.3846/BJRBE.2018.398

F. Aras

引用次数: 2

Non-destructive modulus testing and performance evaluation for asphalt pavement reflective cracking mitigation treatments 沥青路面反射裂缝治理的无损模量试验及性能评价

IF 1.1 4区工程技术

Baltic Journal of Road and Bridge Engineering Pub Date : 2018-03-27 DOI: 10.3846/BJRBE.2018.392

Can Chen, Shibin Lin, R. Williams, J. Ashlock

{"title":"Non-destructive modulus testing and performance evaluation for asphalt pavement reflective cracking mitigation treatments","authors":"Can Chen, Shibin Lin, R. Williams, J. Ashlock","doi":"10.3846/BJRBE.2018.392","DOIUrl":"https://doi.org/10.3846/BJRBE.2018.392","url":null,"abstract":"Reflective cracking is a common type of pavement distress, which manifests as cracks in an underlying layer propagating through to the surface of a pavement structure. To minimize reflective cracking of asphalt layers in composite pavements, four treatments are commonly used: standard/full rubblization, modified rubblization, crack and seat, and rock interlayer. The four types of treatment were evaluated to determine their effectiveness in mitigating reflective cracking via non-destructive Falling Weight Deflectometer tests and Surface Wave Method tests to measure layer modulus, along with field pavement performance surveys. It is found that moduli measurements from Surface Wave Method tests have reduced uncertainty comparing to those from Falling Weight Deflectometer tests, (2) the moduli of thin rock interlayers were captured by Surface Wave Method, but missed by Falling Weight Deflectometer. In addition, the Surface Wave Method results show that (1) crack and seat treatments provide the highest moduli, followed by modified rubblization, and (2) standard rubblization and rock interlayers provide moduli that are slightly lower than the other two treatments. Pavement performance survey was also conducted concurrently with the in-situ modulus tests. Based on the results of this study, modified rubblization and rock interlayer treatments are recommended for mitigation of reflective cracking.","PeriodicalId":55402,"journal":{"name":"Baltic Journal of Road and Bridge Engineering","volume":"13 1","pages":"46-53"},"PeriodicalIF":1.1,"publicationDate":"2018-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42053882","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

Potential of MSWI bottom ash to be used as aggregate in road building materials 城市生活垃圾底灰作为公路建筑材料集料的潜力

IF 1.1 4区工程技术

Baltic Journal of Road and Bridge Engineering Pub Date : 2018-03-27 DOI: 10.3846/BJRBE.2018.401

A. Vaitkus, J. Gražulytė, V. Vorobjovas, O. Šernas, R. Kleizienė

{"title":"Potential of MSWI bottom ash to be used as aggregate in road building materials","authors":"A. Vaitkus, J. Gražulytė, V. Vorobjovas, O. Šernas, R. Kleizienė","doi":"10.3846/BJRBE.2018.401","DOIUrl":"https://doi.org/10.3846/BJRBE.2018.401","url":null,"abstract":"In the European Union, more than 140 million tonnes of municipal solid waste is incinerated annually. It generates about 30–40 million tonnes of residues known as municipal solid waste incinerator bottom ash, which is typically landfilled. To deal with growing landfills, there is a need to utilize municipal solid waste incinerator bottom ash as a building material. It has been known that municipal solid waste incinerator bottom ash properties strongly depend on waste composition, which is directly influenced by people’s habits, economic policy, and technologies for metals recovery of bottom ash. Thus, municipal solid waste incinerator bottom ash produced in a specific country or region has primarily to be tested to determine its physical and mechanical properties. The main aim of this study is to determine municipal solid waste incinerator bottom ash physical and mechanical properties (aggregate particle size distribution, water content, oven-dried particle density, loose bulk density, Proctor density, optimal water content, California Bearing Ratio after and before soaking, permeability, Flakiness Index, Shape Index, percentage of crushed and broken surfaces, resistance to fragmentation (Los Angeles coefficient), water absorption and resistance to freezing and thawing). Municipal solid waste in-cinerator bottom ash produced in the waste-to-energy plant in Klaipėda (Lithuania) was used in this research. Ferrous and non-ferrous metals were separated after more than three months of municipal solid waste incinerator bottom ash ageing in the atmosphere. The study showed promising results from considering municipal solid waste incinerator bottom ash as possible aggregates for road building materials.","PeriodicalId":55402,"journal":{"name":"Baltic Journal of Road and Bridge Engineering","volume":"13 1","pages":"77-86"},"PeriodicalIF":1.1,"publicationDate":"2018-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42177872","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 18

The impact of ageing on the bitumen stiffness modulus using the CAM model 老化对沥青刚度模量的影响

IF 1.1 4区工程技术

Baltic Journal of Road and Bridge Engineering Pub Date : 2018-03-27 DOI: 10.3846/BJRBE.2018.386

M. Cholewińska, M. Iwański, G. Mazurek

引用次数: 18

Load transfer-crack width relation of non-dowelled jointed plain concrete short slabs 无榫连接素混凝土短板的荷载传递裂缝宽度关系

IF 1.1 4区工程技术

Baltic Journal of Road and Bridge Engineering Pub Date : 2018-03-27 DOI: 10.3846/BJRBE.2018.388

M. Pradena, L. Houben

{"title":"Load transfer-crack width relation of non-dowelled jointed plain concrete short slabs","authors":"M. Pradena, L. Houben","doi":"10.3846/BJRBE.2018.388","DOIUrl":"https://doi.org/10.3846/BJRBE.2018.388","url":null,"abstract":"Non-dowelled short slabs are a cost-effective innovation of jointed plain concrete pavements. The development of this innovation has been concentrated in their structural performance. Still there is a lack of specific studies of the relation load transfer – crack width, being the crack width at joint the direct cause of the aggregate interlock. Considering that their provision of load transfer relies on aggregate interlock, the objective of the present article is to develop the relationship between the load transfer by aggregate interlock and its direct cause (the crack width) specifically for innovative non-dowelled short concrete slabs pavements. For that, the analysis includes a validated nonlinear aggregate interlock model incorporated in a 3D Finite Element program, laboratory results, and field measurements performed as part of the present investigation. The results show that due to the small crack widths, the short slabs are able to provide adequate load transfer (not less than 70%) even without dowels bars. Indeed, in this case, the load transfer relies on aggregate interlock and the results of the Faultimeter (residual value more than 0) have confirmed this interlocking for crack widths at joints not more than 1.2 mm, which are typical values in short slabs when the joints are activated. For that, the Early Entry saw cutting method needs to be modified or applied as a complementary method to perform the joints. Although in short concrete slabs pavements the provision of load transfer is already guaranteed by the small crack widths at joints, the application of high-quality coarse aggregates provides even higher load transfer.","PeriodicalId":55402,"journal":{"name":"Baltic Journal of Road and Bridge Engineering","volume":"13 1","pages":"40-45"},"PeriodicalIF":1.1,"publicationDate":"2018-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42169985","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

Impact of recycled asphalt pavement on properties of foamed bituminous mixtures 再生沥青路面对发泡沥青混合料性能的影响

IF 1.1 4区工程技术

Baltic Journal of Road and Bridge Engineering Pub Date : 2018-03-27 DOI: 10.3846/BJRBE.2018.383

S. S. Kar, A. Swamy, D. Tiwari, P. Jain

{"title":"Impact of recycled asphalt pavement on properties of foamed bituminous mixtures","authors":"S. S. Kar, A. Swamy, D. Tiwari, P. Jain","doi":"10.3846/BJRBE.2018.383","DOIUrl":"https://doi.org/10.3846/BJRBE.2018.383","url":null,"abstract":"In recent years, the use of foamed bitumen technology along with Reclaimed Asphalt Pavement is gaining popularity across the world. The mechanical response of foamed bitumen mixtures containing reclaimed asphalt pavement is significantly influenced by constituent material properties and aggregate gradation. This article presents results from a study where foamed bitumen mixtures conforming to Indian specifications were evaluated. For this purpose, foamed bitumen mixtures using a different percentage of reclaimed asphalt pavement and bitumens were prepared. Initially, the foaming characteristics of virgin bitumens were evaluated to optimize for optimum water content and foaming temperature. In the second stage, mixture design was conducted to optimize for foamed bitumen content in foamed bitumen mixtures containing a different percentage of reclaimed asphalt pavement. Finally, these foamed bitumen mixtures were evaluated for their mechanical properties. The results from this laboratory study indicated properties of foamed bitumen and foamed mixtures are significantly influenced by properties of bitumen, the quantity of bitumen, and reclaimed asphalt pavement. Among the different mixtures, a mixture containing 50% reclaimed asphalt pavement exhibited best results in resilient modulus and resistance to moisture damage tests. A mixture containing 80% reclaimed asphalt pavement also shows acceptable strength and resistance to water susceptibility. Thus, it is possible to design high-quality bituminous mixes using higher reclaimed asphalt pavement percentages, which meet the required volumetric and desired performance criteria.","PeriodicalId":55402,"journal":{"name":"Baltic Journal of Road and Bridge Engineering","volume":"13 1","pages":"14-22"},"PeriodicalIF":1.1,"publicationDate":"2018-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46157494","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 9

Field testing and dynamic analysis of old continuous truss steel bridge 老特拉斯连续拱桥的现场试验与动力分析

IF 1.1 4区工程技术

Baltic Journal of Road and Bridge Engineering Pub Date : 2018-03-27 DOI: 10.3846/BJRBE.2018.394

A. Kilikevičius, D. Bacinskas, M. Jurevičius, Kristina Kilikevičienė, A. Fursenko, J. Jakaitis, Eligijus Toločka

{"title":"Field testing and dynamic analysis of old continuous truss steel bridge","authors":"A. Kilikevičius, D. Bacinskas, M. Jurevičius, Kristina Kilikevičienė, A. Fursenko, J. Jakaitis, Eligijus Toločka","doi":"10.3846/BJRBE.2018.394","DOIUrl":"https://doi.org/10.3846/BJRBE.2018.394","url":null,"abstract":"Paper presents dynamic field test and analysis results of a three span railway steel continuous truss bridge over river Neris in Jonava. Bridge was originally constructed in 1914. In the period of the World War II and afterwards the bridge was many time destroyed by German and Soviet armies. In 1948 the new railway bridge was constructed. Object of the present paper is to evaluate dynamic behaviour of the railway bridge after 67 years in service. Experimental dynamic analysis was divided into resonance-vibration, forced-vibration and free vibration studies. Resonance-vibrations of the bridge were excited by separate actions of shock loading and standard locomotive 2M62. Forced-vibrations were measured under the action of locomotive 2M62. Additionally, free vibration tests under passage of freight and passenger trains have been carried out. Structural dynamic response of the bridge was analysed using Bruel & Kjaer LAN XI dynamic test system and software. As a result, main dynamic parameters of the bridge were obtained. The main results include: mode shapes, frequencies of natural and forced vibrations, damping ratios, maximum amplitudes of accelerations, dynamic displacements. The obtained values were compared to the requirements of different design codes. Based on the achieved results concluding remarks and recommendations regarding the condition of the bridge after long-term period in service were presented.","PeriodicalId":55402,"journal":{"name":"Baltic Journal of Road and Bridge Engineering","volume":"13 1","pages":"54-66"},"PeriodicalIF":1.1,"publicationDate":"2018-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44620140","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6