Baltic Journal of Road and Bridge Engineering最新文献_第6页

Investigation of Longitudinal Cracking in Widened Concrete Pavements 加宽混凝土路面纵向裂缝的研究

IF 1.1 4区工程技术

Baltic Journal of Road and Bridge Engineering Pub Date : 2020-03-17 DOI: 10.7250/bjrbe.2020-15.468

Shuo Yang, Yang Zhang, O. Kaya, H. Ceylan, Sunghwan Kim

{"title":"Investigation of Longitudinal Cracking in Widened Concrete Pavements","authors":"Shuo Yang, Yang Zhang, O. Kaya, H. Ceylan, Sunghwan Kim","doi":"10.7250/bjrbe.2020-15.468","DOIUrl":"https://doi.org/10.7250/bjrbe.2020-15.468","url":null,"abstract":"Widened slabs, widely employed in many US states in concrete pavements, have suffered from unexpected longitudinal cracks. These cracks suddenly appeared within 0.60 m to 1.20 m from widened slab edges and could be detrimental to the long-term pavement performance. The primary objective of this study was to identify possible causes for such longitudinal cracking observed on widened concrete pavements. Both field investigation and Finite Element Analysis were performed. Degrees of curling and warping were measured using a Terrestrial Laser Scanner. Concrete cores were also extracted to achieve a better understanding of how the cracking had developed. Field survey and numerical simulation results indicate that such longitudinal cracks could be primarily caused by a combination of excessive traffic loads, a high degree of curling and warping, inadequate support from underlying layers, pavement ageing, and skewed joints. It was also found that 4.30 m widened slabs coupled with tied Portland Cement Concrete shoulders outperformed others in terms of producing less cracking, even when they had experienced higher levels of truck traffic. The sites constructed in late afternoons also showed significantly less longitudinal cracks.","PeriodicalId":55402,"journal":{"name":"Baltic Journal of Road and Bridge Engineering","volume":"15 1","pages":"211-231"},"PeriodicalIF":1.1,"publicationDate":"2020-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49286523","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

Longitudinal Acceleration Models for Horizontal Reverse Curves of Two-Lane Rural Roads 双车道农村公路水平反向曲线的纵向加速度模型

IF 1.1 4区工程技术

Baltic Journal of Road and Bridge Engineering Pub Date : 2020-03-17 DOI: 10.7250/bjrbe.2020-15.463

T. Echaveguren, Cristián Henríquez, Gustavo JIMÉNEZ-RAMOS

{"title":"Longitudinal Acceleration Models for Horizontal Reverse Curves of Two-Lane Rural Roads","authors":"T. Echaveguren, Cristián Henríquez, Gustavo JIMÉNEZ-RAMOS","doi":"10.7250/bjrbe.2020-15.463","DOIUrl":"https://doi.org/10.7250/bjrbe.2020-15.463","url":null,"abstract":"The operating speed profile models adopt acceleration and deceleration as constant values obtained from kinematic models, assuming that the operating speeds between two consecutive sections are not spatially correlated. Existent research shows that acceleration and deceleration in horizontal reverse curves (HRC) depend on the tangent length and curve radii. In this paper, accelerations/decelerations-geometry models for light cars are proposed. The models are based on the data obtained in-field with a 10 Hz GPS under favourable traffic, weather, and pavement condition to isolate the effect of road geometry over the speed changes. The models were calibrated using the 95th percentile of acceleration probability density function (pdf) obtained section to section in the HRC. It was found that the acceleration and deceleration pdf follow the Burr distribution. Therefore, a Box–Cox transformation is needed to properly calibrate acceleration-geometry models. The models obtained confirmed that accelerations and decelerations depend on the radius of entrance and departure curves of the HRC. The results contribute to better understanding of the acceleration/deceleration patterns of light cars and to enhancing operating speed models in the HRC.","PeriodicalId":55402,"journal":{"name":"Baltic Journal of Road and Bridge Engineering","volume":"15 1","pages":"103-125"},"PeriodicalIF":1.1,"publicationDate":"2020-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43913180","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: 2

Vertical Dynamic Loads on Footbridges Generated by People Running 行人行走对人行天桥产生的垂直动荷载

IF 1.1 4区工程技术

Baltic Journal of Road and Bridge Engineering Pub Date : 2020-03-17 DOI: 10.7250/bjrbe.2020-15.461

M. Pańtak

引用次数: 2

Analysis of Older Pedestrian Accidents: A Case Study of Lithuania 老年行人交通事故分析:以立陶宛为例

IF 1.1 4区工程技术

Baltic Journal of Road and Bridge Engineering Pub Date : 2020-03-17 DOI: 10.7250/bjrbe.2020-15.465

Vilma Jasiūnienė, D. Čygas

引用次数: 2

Damage Detection of Truss Structures by Reduction of Degrees of Freedom Using the Serep Method 用Serep方法降低自由度检测特拉斯结构的损伤

IF 1.1 4区工程技术

Baltic Journal of Road and Bridge Engineering Pub Date : 2020-03-17 DOI: 10.7250/bjrbe.2020-15.459

Shahin Lale Arefi, A. Gholizad

{"title":"Damage Detection of Truss Structures by Reduction of Degrees of Freedom Using the Serep Method","authors":"Shahin Lale Arefi, A. Gholizad","doi":"10.7250/bjrbe.2020-15.459","DOIUrl":"https://doi.org/10.7250/bjrbe.2020-15.459","url":null,"abstract":"Damage detection of bridge structures during their operating lifetime is essential. In this paper, two approaches, All Degrees of Freedom and Reduction of the Degrees of Freedom methods, are used to detect the damages in structures. The first method considers All Degrees of Freedom of the structure and the second method, Reduction of the Degrees of Freedom. Since the sensors are installed only on a few degrees of freedom, the responses are available for some of them. The Degrees of Freedom must be reduced and System Equivalent Reduction Expansion Process method is one of the most efficient ways to solve the problem. This research aimed to identify the damage of structures using the Modal Strain Energy method by reducing the structural degree of freedom. Two standard examples are used and the results compared to different damage cases to examine the efficiency of the mentioned method. The results illustrated the proper performance of the Reduction of the Degrees of Freedom method to identify the damage in truss structures. By increasing the number of modes, Reduction of the Degrees of Freedom method detects considerably more accurate the damaged elements, especially when the noise is considered. Also, based on the outcomes to identify damaged elements, it is possible to consider more modes instead of more sensors.","PeriodicalId":55402,"journal":{"name":"Baltic Journal of Road and Bridge Engineering","volume":"15 1","pages":"1-25"},"PeriodicalIF":1.1,"publicationDate":"2020-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44114988","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: 2

The Interface Friction in The Friction-Type Bolted Joint of Steel Truss Bridge: Case Study 特拉斯钢桥摩擦型螺栓连接中的界面摩擦研究

IF 1.1 4区工程技术

Baltic Journal of Road and Bridge Engineering Pub Date : 2020-03-17 DOI: 10.7250/bjrbe.2020-15.467

Gaoxin Wang, You-liang Ding

{"title":"The Interface Friction in The Friction-Type Bolted Joint of Steel Truss Bridge: Case Study","authors":"Gaoxin Wang, You-liang Ding","doi":"10.7250/bjrbe.2020-15.467","DOIUrl":"https://doi.org/10.7250/bjrbe.2020-15.467","url":null,"abstract":"The friction-type bolted joint transfers the internal forces in the structural members by interface friction, but noticeable seasonal temperature and bolt fracture cause the redistribution of interface friction and threaten the joint safety. Therefore, this study carried out finite element analysis on the interface friction considering the influence of seasonal temperature and bolt fracture. Through finite element analysis, the simulation of interface friction under seasonal temperature revealed the distribution of temperature induced interface friction in different areas and locations. Further simulation of fractured bolts revealed the influence of quantity and location of fractured bolts on the redistribution of interface friction. Finally, the interface frictions in the bolted joint were evaluated using limit state equations. The results showed that: 1) the quantity and location of fractured bolts cause obvious redistribution of interface friction in the bolt-fractured areas; 2) the quantity and location of fractured bolts have slight effect on the total interface friction in the whole splice plate; 3) the reduced interface friction in the bolt-fractured areas was transferred to the areas without bolt fracture, producing little change in the total interface friction; 4) all the splice plates had abundant safety margin after analysis of their limit state equations.","PeriodicalId":55402,"journal":{"name":"Baltic Journal of Road and Bridge Engineering","volume":"15 1","pages":"187-210"},"PeriodicalIF":1.1,"publicationDate":"2020-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48181910","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: 3

The Use of Bloss Curve in The Exit Lanes of Road Intersections 损失曲线在交叉口出口车道中的应用

IF 1.1 4区工程技术

Baltic Journal of Road and Bridge Engineering Pub Date : 2020-03-17 DOI: 10.7250/bjrbe.2020-15.462

D. Ciampa, S. Olita

{"title":"The Use of Bloss Curve in The Exit Lanes of Road Intersections","authors":"D. Ciampa, S. Olita","doi":"10.7250/bjrbe.2020-15.462","DOIUrl":"https://doi.org/10.7250/bjrbe.2020-15.462","url":null,"abstract":"The paper proposes the use of the Bloss curve (also known as biparametric or bi-hyperclothoid) as a braking curve in the exit lanes of road intersections. The main international standards continue using the clohoid as the principal transitional geometric element, even though the limits of its use in driving regimes with non-uniform speeds are known. The proposal to use the Bloss curve is aimed at overcoming these limitations and opening a debate on the possible need to codify, even in the international standards, the use of more suitable alternative braking curves. In this context, a kinematic study was conducted by comparing the main parameters of the motion (lateral jerk, lateral acceleration, steering speed) between the Bloss curve and more traditional curves, such as clothoid and Generalized Cornu Spirals (GCS). Nine case studies were conducted, each case was characterized considering the type of transition curve used (clothoid, GCS and Bloss curve) and radius R of the exit curve (R = 60 m, 80 m, 100 m). The numerical values assumed by the kinematic variables along the transition curves were “locally” calculated, i.e. “pointby- point”, to take into account the non-uniform motion regime. The results obtained, limited to the cases studied, show that the Bloss curve better meets the kinematic conditions of the vehicle motion in non-uniform driving regimes. Therefore, the Bloss curve can be considered as a braking curve in the design of road intersections and be a candidate for further investigation to assess any additional benefits in terms of comfort, driving safety and visual perception of the geometric element.","PeriodicalId":55402,"journal":{"name":"Baltic Journal of Road and Bridge Engineering","volume":"15 1","pages":"76-102"},"PeriodicalIF":1.1,"publicationDate":"2020-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46503071","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: 1

Experimental Method of Fatigue Performance of Mastic Asphalt for Bridge Deck Pavement 桥面铺装用沥青疲劳性能的试验方法

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.2019-14.458

G. Zou, Xiao-ning Zhang, C. Wu

{"title":"Experimental Method of Fatigue Performance of Mastic Asphalt for Bridge Deck Pavement","authors":"G. Zou, Xiao-ning Zhang, C. Wu","doi":"10.7250/bjrbe.2019-14.458","DOIUrl":"https://doi.org/10.7250/bjrbe.2019-14.458","url":null,"abstract":"Mastic asphalt is a type of pavement material that has good fluidity and is self-levelling at construction temperature for the bridge deck. There are highly accurate methods and indexes for evaluating fluidity and high-temperature deformation resistance for mastic asphalt-design and construction-control systems. The fatigue cracking is one of the main failure forms of bridge deck pavement. Therefore, the method used to evaluate the fatigue properties of pavement materials is also essential. The anti-deformation capability of the mastic asphalt must be increased, that results in poor fatigue performance and consequent failure of the bridge deck pavement to avoid the rutting of bridge deck pavement. In this study, a simple method is put forward for evaluating mastic asphalt fatigue performance. Impact toughness is defined as the area under the load-displacement curve of a three-point bending beam specimen under impact load to evaluate the fatigue performance of mastic asphalt. The four-point bending beam fatigue test is used to verify the rationality of the impact toughness test method. The results showed that there is a good correlation between the impacts toughness index of mastic asphalt produced under different mixing conditions and the accumulative dissipative energy and fatigue life demonstrated by the four-point bending beam test. Therefore, to evaluate the fatigue performance of mastic asphalt by impact toughness test. Fatigue performance and rut resistance are two ways to evaluate road performance of asphalt mixtures, but they are mutually restrictive. The results show that impact toughness and dynamic stability are inversely correlated. As the impact toughness increases, dynamic stability decreases. Therefore, balancing the fatigue performance and high-temperature rutting resistance of mastic asphalt in the design and quality control is very important.","PeriodicalId":55402,"journal":{"name":"Baltic Journal of Road and Bridge Engineering","volume":"14 1","pages":"568-586"},"PeriodicalIF":1.1,"publicationDate":"2019-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46221972","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

Parametric Analysis of Multi-Span Cable-Stayed Bridges Under Alternate Loads 多跨斜拉桥在交变荷载作用下的参数分析

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.2019-14.457

Hiram Arellano, R. Gómez, D. Tolentino

引用次数: 3

Effective Waterproofing of Railway Culvert Pipes 铁路涵管的有效防水

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.2019-14.453

L. Trykoz, S. Kamchatnaya, O. Pustovoitova, A. Atynian, O. Saiapin

{"title":"Effective Waterproofing of Railway Culvert Pipes","authors":"L. Trykoz, S. Kamchatnaya, O. Pustovoitova, A. Atynian, O. Saiapin","doi":"10.7250/bjrbe.2019-14.453","DOIUrl":"https://doi.org/10.7250/bjrbe.2019-14.453","url":null,"abstract":"The composition material for waterproofing of the railway infrastructure objects, in particular, culvert pipes is suggested in the article. The waterproof composition contains an acrylic polymer and a filler. The comparison of the composition properties with two kinds of the fillers (silica sand and Portland cement) is carried out. The following properties are defined – water absorption, corrosion stability, stability in an aggressive environment, frost resistance to evaluating the suitability of the proposed composition for waterproofing. These properties are determined for three batches: an acrylic polymer without a filler, an acrylic polymer with silica sand, and an acrylic polymer with Portland cement. The test results show that the composition with silica sand possesses the best waterproofing properties. Wherein the quantity of silica sand is 1.5 mass parts to the quantity of polymer. Compared to the non-filled acrylic polymer the offered composition is characterised less water absorption, more significant corrosion stability and stability in an aggressive environment, better frost resistance. The mix with Portland cement shows a bit worse results at a higher cost of the material in whole.","PeriodicalId":55402,"journal":{"name":"Baltic Journal of Road and Bridge Engineering","volume":"14 1","pages":"473-483"},"PeriodicalIF":1.1,"publicationDate":"2019-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46812652","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