Apr 24, 2012 the new bridge over the iowa river near downtown iowa falls is a major upgrade over the 1928 concrete arch structure it replaced last fall, once the longest arch span bridge in the state. Agarana2 1department of mathematics, university of ilorin, nigeria 2department of mathematics, college of. Introduces various sensors and their deployment on the bridge and on the railway track. Impact coefficient analysis of longspan railway cablestayed. Railroad bridge owners typically expect a longer service life from their structures than highway bridge owners expect from theirs. A nondestructive monitoring system is used to assess the bridge performance under train speeds of 290, 360, 400 and 406 kmh. Therefore in this approach, the damage patterns of the bridge members are assumed in advance and used as the input information.
The system consists of a spatial vehicle model, a threedimensional 3d bridge model, and a wheelrail interaction model including the effects of track irregularities. Structural damage identification for railway bridges based on traininduced bridge responses and sensitivity analysis article in journal of sound and vibration 3304. Compared with medium and small span bridges, very limited attention has been paid on the research of the impact coefficient of longspan railway bridges. Imposed traffic loads consist of those forces induced by road or rail vehicles on the bridge. Optimal design of bridges for highspeed trains single and doublespan bridges carine mellier master of science thesis.
The safety risk model srm is rf based representation of risk on rail track controlled infrastructure rci. The full description of bridge seriesoftypes design is presented in ref. This bridge connects devices that communicate with consumer bluetooth gadgets and interface with a wifi home network. A bridge damage detection approach using trainbridge. State of the art article pdf available in international journal of computer applications 9625. Gsm based railway bridge damage and track failure detection. One has a double track railway bridge with composite two plate girder deck type, an extension of 220 m, a.
T he c ase s tudy r ailway b ridge the sample bridge structure is a branch of the high speed railway link between the hubs of milan and bologna, along the. Railway bridge health monitoring is of prime importance as damages in bridges can lead to heavy casualties. What is the difference between a railway bridge and a. Railway bridge and track, base station, zigbee, sensor nodes, arm controller. Pdf railway security system based on wireless sensor networks. A feasibility study of the driveby method for damage. The new bridge over the iowa river near downtown iowa falls is a major upgrade over the 1928 concrete arch structure it replaced last fall, once the longest arch span bridge in the state.
There are several traditional methods that a bridge crew can use to temporarily support a bridge. Rf based railway bridge damage notification with alert. The results showed that the wireless instrumentation. To estimate the impact effects of longspan railway bridges subjected to moving vehicles, a real longspan railway cablestayed bridge is regarded as the research object in this study, and a coupled model of vehicle bridge system is established. These one of the major railway asset groups with more than 35,000 bridges on the uk rail network. Railway bridge health monitoring system using smart wireless. The hardware integrates with wifi wireless access points and is useful for older computers or devices that dont have wifi capability wifi to wifi bridge. It is constructed for the purpose of providing passage over the obstacle, usually something that can be detrimental to cross otherwise. The thesis was performed on assignment by the banverket, the authority responsible for rail traffic in sweden. Buildings bridge failures pose or were thought to pose a smaller threat to human life. Moses gate damage to railway bridge network rail media centre. Dynamic behaviour of high speed railway bridges with. The performance of the wireless technology was compared with the wired technology in the laboratory. In this paper we introduces railway tracks and bridge monitoring system using wireless sensor networks based on arm processor.
In proceedings of rail research uk association annual. However, in some instances these traditional methods are not feasible for reasons including site conditions, access limitations to the work area, and budgetary restraints. Proceedings of the institution of mechanical engineers, part f. Bridge traffic can be vehicular, rail or pedestriancycle or indeed any combination of these. Wireless remote structural integrity monitoring for railway. Railway bridge inspectors should be able to understand and carry out the inspection procedure, including accessing inspection points on a bridge, measuring components, as required and recording any changes, clearly describing conditions found, and detecting the development of conditions that are critical to the safety of the bridge.
Evaluation of highspeed railway bridges based on a. Contact the press office to receive news, updates, press releases, videos, pictures, and factsheets, and to arrange interviews, filming and photography. Future projections also indicate that the frequency of extreme flooding across europe is anticipated to double by 2050 5 with major implications for highway and railway infrastructure. A bridge can be categorized by what it is designed to carry, such as trains, pedestrian or road traffic road bridge, a pipeline or waterway for water transport or barge traffic. It is this type of solution that constitutes the case study for this work. An aqueduct is a bridge that carries water, resembling a viaduct, which is a bridge that connects points of equal height. Many efforts have been done to establish a detection and protection system for rail lines and most of them were based on wireless sensor network 8 9101112. Railway bridge damage status is monitored by the sensor and transfer through wireless modules. Railway, bridge and tunnel engineering detailed contents section i.
The existing bridge is lifted and set down somewhere for demolition. Pdf evaluation of highspeed railway bridge based on. In the actual railway viaducts, the possible damage patterns of the structures are comprehended by the bridge engineers based on theoretical and empirical facts. The damage due to scour action at railway structures alone in the uk is estimated to be over. The problem becomes even more complex when only the bridge response data is available, and characteristics of the. We designed the system including sensor nodes arrangement, collecting data, transmission method and. Abstract the project is to provide the multi sensor railway track geometry surveying system. Contact the press office to receive news, updates, press releases, videos, pictures, and factsheets, and to. Management for construction of railway over bridge. Guideline for bridge safety management transport canada. Winkler foundation, mindlin plate, finite difference method, dynamic response, railway vehicle, railway tracks.
Based crack damage detection using convolutional neural networks. The basic method followed up to now in the existing engineering codes for railway bridges 7, 6, 5 has been that of the impact factor, generally represented as as has been discussed previously in section 1, such coefficient represents the dynamic effect of single moving loads, but. Impact coefficient analysis of longspan railway cable. A nondestructive monitoring system is used to assess the bridge performance under. A fixed bridge consists of abutment and pontic teeth splinted together. Abstract the main objective of this project is to provide the multisensor railway track geometry surveying system. Unlimited viewing of the articlechapter pdf and any associated supplements and figures.
The dynamic behaviour of the railway bridge is evaluated, using the finite element program lusas. To estimate the impact effects of longspan railway bridges subjected to moving vehicles, a real longspan railway cablestayed bridge is regarded as the research object in this study, and a coupled model of vehiclebridge system is established. The main dimensions of the bridge can be seen in fig. Information for journalists, press, bloggers and the media about network rail. Bridge manual second edition appendix e bridge site. The power supply consists of central tapped transformer, full wave rectifier and voltage regulator. The main elements are the two arches and the two main girders. Structural damage identification for railway bridges based on. Online early damage detection and localisation using multivariate data analysis. The system consists of a spatial vehicle model, a threedimensional 3d bridge model, and a wheelrail interaction model including the effects of. Bridge damage status is monitored by the sensor and wireless. The train crosses the bridge at constant speed and is represented by moving axle forces.
Dynamic bridgetrain interaction in highspeed railway design an evaluation of comfort criteria regulations and analysis methods according to eurocode masters thesis in the masters programme structural engineering and building technology michael engberg axel kristensson department of civil and environmental engineering. Numerical modelling of riveted railway bridge connections. Pdf railway bridge structural health monitoring and fault detection. The bridges are designed according to polish bridge standards 11,12. This paper evaluates the fatigue stress and damage accumulation in steel railway bridges using a dynamic coupled trainbridge system model. Depending on the design code, the type and intensity of the design vehicle changes. Wireless sensor node for detection of freight train derailment.
Dynamic analysis of a railway bridge subjected to high speed. Railway bridge health monitoring system using smart. The main girders are supported by cables with a diameter of 60 mm. Live loads of high speed railways bridges are quite larger than those used for the design of highway bridges, resulting in important differences between the design criteria used in each case. Dynamic response of railway bridges subjected to high speed. Nowadays, steel concrete composite structure railway bridges are extremely competitive solutions.
This hardware allows wifi clients to connect to an ethernet network. Influence of random track irregularities on dynamic. Influence of random track irregularities on dynamic response. Nov 11, 2017 this paper evaluates the fatigue stress and damage accumulation in steel railway bridges using a dynamic coupled train bridge system model.
The most common type of damage in railway bridges reported in sweden by. A discussion of the optimal isolator type for railway bridges is also provided hereafter. Railway security system based on wireless sensor networks. The investigated bridge structure is a steel arch railway bridge with a span of 52. Dynamic bridgetrain interaction in highspeed railway design. The effect of trainbridge interaction, especially with heavy trains, makes the trainbridge system timevarying, and modal identification challenging. Eurocodes en19912 2003 and en1990a1 2005 and the new spanish code iapf 2007. A bridge unit serves to restore a functional unit by replacing one or more missing teeth. Introduction to bridge engineering drexel university. Additionally, the bridge structures are old with more than 50% of the population constructed over 100 years ago.
Wireless monitoring of railway bridge health the hindu. Damage detection in railway bridges under moving train load. For easy surveying and with less delay the information can be send to the authority. Wireless remote structural integrity monitoring for. Due to the unique nature of each bridge and their varied means. Baseline data was acquired on a steel railway bridge using the hardwired technology. Wireless monitoring of scour and redeposited sediment. In this paper, we give a brief overview of a novel railway bridge health monitoring system using smart wsn. The basic method followed up to now in the existing engineering codes for railway bridges 7, 6, 5 has been that of the impact factor, generally represented as as has been discussed previously in section 1, such coefficient represents the dynamic effect of single moving loads, but does not include resonant dynamic effects. The problem becomes even more complex when only the bridge response data is available, and characteristics of the train load mass, speed etc. Based on the reduced model, a matlab function aiming at calculating the dynamic response of a bridge, caused by trains passing the bridge was developed. Dynamic analysis of railway bridges supported by a winkler foundation under uniform partially distributed moving railway vehicles j. Steel concrete composite railway bridges with continuous decks.
The prototype wireless hardware and proposed sensors were designed and assembled. Pdf railway security system based on wireless sensor. There are many different designs that each serve a particular purpose and apply to different situations. This bridge joins two wifi networks, often to increase the coverage area of a wifi hotspot. In a previous study 14, the fe model of a typical shortspan, plate girder, riveted railway bridge was. The bridge is assembled somewhere near the existing bridge. To design a railway bridge for highspeed trains, the eurocode advices the following. In particular, it is observed that the deflection of the railway bridge decreases as the foundation moduli increase. Appendix guideline for bridge safety management with.
Introduction this paper describes a wireless transmission system to be operating on a real bridge structure. However, memory and energy constraints of wsn, and extracting intelligible information from signals obtained from complex bridge structures are the technical challenges in this domain. Dynamic analysis of a railway bridge subjected to high. Damage detection in railway bridges under moving train. Structural damage identification for railway bridges based. Abstract railway bridges form bridge asset management. Aug 25, 2016 imposed traffic loads consist of those forces induced by road or rail vehicles on the bridge. Moses gate damage to railway bridge network rail media. Dynamic analysis of railway bridges supported by a winkler. A method that enabled reduced models of railway bridges was developed. The bridge includes two railway tracks, two passages for vehicles and two passages for pedestrians, and it is the major railway bridge across the nile river. The block diagram of railway bridge damage and track fault notification usingalarm system consists of power supply, at89c52 microcontroller,buzzer, buzzer driver, gsm modem, quartz crystal oscillator, 16x2 lcd display.
It increases monitoring efficiently as compared to manual inspection. The current method used in most bridge replacement projects is to have lane closures while work is done overhead. Railway bridge definition of railway bridge by medical. Some wireless ap hardware supports bridging in ethernet as well as wifi mode. Dynamic response of railway bridges subjected to high. However, more than 35% of the 300,000 railway bridges across. The effect of train bridge interaction, especially with heavy trains, makes the train bridge system timevarying, and modal identification challenging. Numerical modelling of riveted railway bridge connections for. Closer look at cairos enchanted bridges network rail is urging hgv drivers to stop striking railway bridges after it was revealed that a railway bridge in wakefield is one of the most. An important feature in these codes is the consideration of service limit states.
859 1083 749 558 634 757 1347 1259 1372 525 1075 923 1130 1282 18 481 645 14 1031 750 1149 687 9 744 361 1261 1241 976 469 15 373 1358 170 884 444 440 1259 848 322 1202 681 584 664 503 328 1174 1227 1052