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Article

RESEARCH ON THE LIGHTWEIGHT CONCRETE BRIDGE DECK SLABS REINFORCED WITH GFRP COMPOSITE BARS

arrangements have been applied for static and fatigue tests in shear and flexure. The research has clearly revealed that bridge deck slabs made of LWC concrete and GFRP rebars could be viable alternative for conventional concrete bridge decks with steel rebars. Following the research the first Polish application of LWC bridge deck slab reinforced with GFRP bars took place on a medium-size road bridge.

Agnieszka WIATER

Architecture, Civil Engineering, Environment , ISSUE 4, 115–120

Research Article

BRIDGE DEFLECTION MEASUREMENT USING WIRELESS MEMS INCLINATION SENSOR SYSTEMS

Bridge is an important part of modern transportation systems and deflection is an important index for bridge’s safety evaluation. In this paper, a method of deflection measurement using Wireless MEMS Inclination Sensor Systems (WMISS) is presented and validated. Firstly, based on various bridge deflection measuring methods, the method of deflection measurement using inclination parameter is introduced. Secondly, a low-power wireless inclination sensor based on 3D-MEMS SCA60 inclinometer

Yan Yu, Hang Liu, Dongsheng Li, Xingquan Mao, Jinping Ou

International Journal on Smart Sensing and Intelligent Systems , ISSUE 1, 38–57

Research Article

A WAVELET-BASED BRIDGE WEIGH-IN-MOTION SYSTEM

Bridge Weigh-in-Motion systems can be used to estimate vehicle parameters such as velocity, axle loads, or the distance between axles without affecting the traffic. These parameters and the classification of vehicles are necessary to determine vehicle overload and hence may help to reduce risks for road users and road infrastructure and allow optimized planning of maintenance work. The Bridge Weigh-in-Motion system developed is based on a crack displacement sensor with intelligent data

B. Lechner, M. Lieschnegg, O. Mariani, M. Pircher, A. Fuchs

International Journal on Smart Sensing and Intelligent Systems , ISSUE 4, 573–591

Research Article

Dual Slope Direct Digital Converter for Bridge Connected Resistive Sensors

A dual slope direct digital converter (DSDDC) suitable for resistive sensor elements already connected in a bridge form is presented. A conventional dual slope analog to digital converter (DS-ADC) is altered with an intentionally introduced instrumentation amplifier (INA) to realize the proposed DDC. The DSDDC accepts bridge connected resistive sensor elements as input and provides a digital output that is proportional to the quantity being sensed by the sensor elements. The results obtained

Ponnalagu R. N, Boby George, Jagadeesh Kumar V

International Journal on Smart Sensing and Intelligent Systems , ISSUE 5, 1–5

Article

DISPLACEMENTS OF CABLE-STAYED BRIDGE MEASURED WITH THE USE OF TRADITIONAL AND MODERN TECHNIQUES

The paper describes an experiment involving a comparison of a few selected techniques for measuring the displacements of points on the span and pylon of the large cable-stayed bridge. It presents the measuring equipment and the process of static and dynamic tests. The results obtained from several measuring methods including the interferometric radar were compared and summarised. The experiment showed that in the case of large bridges, like tested cable-stayed structure, the best method is non

Marek SALAMAK, Tomasz OWERKO, Piotr ŁAZIŃSKI

Architecture, Civil Engineering, Environment , ISSUE 4, 89–97

Article

LABORATORY TESTS OF OLD REINFORCED CONCRETE PRECAST BRIDGE BEAMS

concrete precast members seems to be appropriate to be subjected the procedure of reuse [7]. The paper presents the tests and investigations focused on precast elements typical for bridge structures. These are reinforced concrete I-shaped beams, obtained from the demolition of road viaduct on the route from Gliwice to Mikołów. The elements have been in service for more than 40 years. The laboratory tests consisted of the mechanical part and chemical part. The overarching goal of conducted analyses is

Szymon DAWCZYŃSKI, Janusz BROL

Architecture, Civil Engineering, Environment , ISSUE 2, 57–63

Research Article

STRUCTURAL HEALTH MONITORING SYSTEM OF A CONCRETE CABLE-STAYED BRIDGE

Abstract In this paper a system of the Rędziński bridge will be described. The Rędziński bridge is the biggest object along the A8 motorway around the city of Wrocław and the biggest concrete cable-stayed bridge in Poland. For the purposes of the bridge monitoring a system of 222 sensors was installed. Results from the first 5 years of work of the SHM will be presented below.

Jan BILISZCZUK, Paweł HAWRYSZKÓW, Marco TEICHGRAEBER

Architecture, Civil Engineering, Environment , ISSUE 4, 69–77

research-article

THE EFFECTS OF DEAD LOADS IN CANTILEVER CONCRETING BRIDGES

1. CANTILEVER CONCRETING TECHNOLOGY Cantilever concreting technology in bridges was first used in 1951 by U. Finsterwalder during the building of a bridge over the Lahn Bulduinstein River. In these times, bridges constructed using this technology did not usually exceed half of the designed 100-year service life. Recently, several thousand bridges of this type have been made in the world e.g. [1, 2]. In Poland, in the years 1963–1973, cantilever concreting technolology was used in three bridges

Czesław MACHELSKI

Architecture, Civil Engineering, Environment , ISSUE 1, 109–120

Article

STEEL RELIEVING CONSTRUCTIONS IN MINING AREAS AS TEMPORARY OR PERMANENT RAILWAY BRIDGES

This article describes three examples of bridge-type relieving constructions located on railway lines in the areas of active mining exploitation. It discusses how to take into account mining influences and how to support a temporary relieving construction on the railway embankment. This article discusses the incorrect solutions and their consequences. The first example involves the protection of train traffic continuity during the replacement of bridge span under an intensively used railway

Piotr BĘTKOWSKI

Transport Problems , ISSUE 2, 107–118

Article

THE CONSTRUCTIVE SOLUTION AND CALCULATION OF ELEMENTS OF THE UNIFIED MODULE OF THE MOBILE BRIDGE OVERCROSSING

In the article the construction of a modular mobile overcrossing is offered. Calculation of its constructive elements is performed and the optimum length of one module is determined. The purpose is the development of the technique and calculation for the new construction of a mobile bridge overcrossing intended for reduction of traffic jams. Methods: The methods uses are mathematical analysis, method of finite elements, method of finite differences, and analytical method of relocation

Adil KADYROV, Kyrmyzy BALABEKOVA, Aleksandr GANYUKOV,, Serik AKHMEDIYEV

Transport Problems , ISSUE 3, 59–69

Article

PARTICLE FILTER ON NONLINEAR VIBRATION SIGNAL OF BRIDGE STAYED CABLE

algorithm can use the accurate state equations. Finally, the particle filter algorithm is used to filter the vibration signal of bridge stayed cable. The vibration signal is de-noised. And from the particle filter, the vibration signal can be tracked and be predicted for a short time accurately. The simulation experiments and the actual experiments on the bridge stayed cable are all indicating that the particle filter algorithm in this paper has good performance and works stably.

Ye Qingwei, Yuan Debin, Zhou Yu, Wang Xiaodong

International Journal on Smart Sensing and Intelligent Systems , ISSUE 4, 940–956

Research Article

Analysis of local influences in structural details of the bridges

The article analyses the problems of local influences in structural details of bridges as the critical locations, whose damages or excessive force may directly affect the safety of users. These analyses are shown on selected examples. Presented is the example of local changes in the forms of proper vibrations in the node of the truss bridge that can be used in expert issues concerning the causes of damages. The second example are the changes in stresses in the stay cable anchorage element

Adam RUDZIK, Stefan PRADELOK

Transport Problems , ISSUE 1, 115–120

research-article

CHANGE OF THE GRADE LINE OF BRIDGES CONSTRUCTED WITH CANTILEVER CONCRETING TECHNOLOGY

1. INTRODUCTION The cantilever concreting technology was used first time in 1951 by U. Finsterwalder to construct the bridge over the Lahn Bulduinstein River. Hence most of bridges constructed with this technology have not exceeded half of the expected service life of 100 years. Until present times thousands of such bridges were made in the world. In Poland between 1963 and 1973 the cantilever method was used for the construction of three bridges (in two casess the prefabricated assembly was

Czeslaw MACHELSKI, Bartosz PISAREK

Architecture, Civil Engineering, Environment , ISSUE 2, 65–72

Review

UNCERTAINTY ANALYSIS OF STRAIN GAGE CIRCUITS: INTERVAL METHOD AND INTERVAL ALGORITHM

This paper presents uncertainty analysis of a strain gage based instrumentation systems. This has been carried out by interval method and classical methods and is verified by the mean value algorithm based on interval arithmetic. The quarter, half and full bridge configuration of strain gage based circuits are considered to illustrate the analysis.

B. Vasuki, M. Umapathy, A. R. Senthilkumarr

International Journal on Smart Sensing and Intelligent Systems , ISSUE 3, 477–489

Research Article

Study of the sensitivity and stability of a landslide sensor based on magnetic amorphous wires

The paper presents a study on the measurement stability of a landslide sensor based on four magnetic amorphous wire strain gauges used in an Wheatstone bridge configuration. The sensor is aimed for in-situ monitoring using a distributed sensor network. The experiment has been performed in the lab using a test stand, while a time step progressive deformation has been applied to the sensor. Results show a good stability of the measurement and a variable sensitivity with respect to the bending

Cristian Zet, Cristian Foşalău, Daniel Petrişor

International Journal on Smart Sensing and Intelligent Systems , ISSUE 5, 1–4

Research Article

A promising optoelectronic clock solution for  time-interleaved ADC

A promising optoelectronic clock solution with low jitter, high bandwidth and accurate delay for a TIADC is proposed by exploiting optical pulses and tunable optical delay lines. It is feasible to construct the optoelectronic clock system with optical pulse source, dispersive medium, tunable delay line in optical domain and conditioning circuits in electronic domain while photodiodes as the bridge. The testing result of the designed conditioning circuit shows that using electronic method to

Zhongying Wu, Fangxing Lv, Hui Ding

International Journal on Smart Sensing and Intelligent Systems , ISSUE 5, 1–4

Article

RESEARCH ON THE NEW CFRP PRESTRESSING SYSTEM FOR STRENGTHENING OF RC STRUCTURES

anchorages can generate maximum prestressing force of 170 kN. The research on NPS II comprised a series of static and fatigue tests on anchorages themselves, system mounted on strengthened beams as well as on-site, i.e. on actual RC bridge. The system has been examined, its efficiency has been confirmed in laboratory and in field tests and now it is ready to use in strengthening purposes.

Bartosz PIĄTEK, Tomasz SIWOWSKI

Architecture, Civil Engineering, Environment , ISSUE 3, 81–87

Article

Design of a Vibration Detection Terminal

I. INTRODUCTION In the national defense and military affairs, the detection of passing vehicles in a specific area is of great significance for understanding each other’s dynamics. The monitoring of bridge vibration can be more convenient to monitor vehicle dynamics. Considering the concealment, destructiveness and inconvenience of construction, this terminal uses wireless communication, battery power supply and micro-power design. Common wireless communication methods include Bluetooth

Guoshao Chen, Fei Xu

International Journal of Advanced Network, Monitoring and Controls , ISSUE 3, 65–72

Research Article

THE RESEARCH ON CAB SIMULATOR OF QUAY CRANE CONTAINERS ON CLASSICAL WASHOUT ALGORITHM

The acceleration of the speed of the quay crane for containers has raised a higher demand to the dynamic simulation system which is the key part of the simulator in the coast container crane. So it is very necessary to do this research on it. This essay, aimed at the seat motion system of training simulator in the coast container crane, lays a study on the key points in the design of the proprioceptive simulation algorithm of the bridge crane simulator and proposes the realization method for it

Xiaowei Shi, Yiteng Xu, Youfang Huang, Houjun Lu

International Journal on Smart Sensing and Intelligent Systems , ISSUE 1, 239–262

Research paper

Axonal outgrowth stimulation after alginate/mesenchymal stem cell therapy in injured rat spinal cord

which could form a supportive environment and scaffold to bridge the lesion area represents another attractive strategy. In the present study, through a combination of these two approaches we applied both alginate hydrogel biomaterial alone or allogenic transplants of MSCs isolated from bone marrow seeded in alginate biomaterial into injured rat spinal cord at three weeks after spinal cord compression performed at Th8-9 level. Following three-week survival, using immunohistochemistry we studied

Juraj Blaško, Eva Szekiova, Lucia Slovinska, Jozef Kafka, Dasa Cizkova

Acta Neurobiologiae Experimentalis , ISSUE 4, 337–350

Research Article

Climate change adaptation for peri-urban horticulture: a case study of the Adelaide Hills apple and pear industry

Despite a growing body of climate change adaptation research, translating findings into action remains a challenge. The need for early intervention looms as a significant problem for horticulture industries in Australia’s peri-urban regions where competing demands for resources generate land use conflicts. Tools and methods that help stakeholders and decision-makers understand climate risks and adaptation options at a more strategic level provide a mechanism to bridge the gap between

Peter Houston, Douglas K. Bardsley

South Australian Geographical Journal , ISSUE 1, 29–42

Article

First Report of the Carolina Spiral Nematode, Scutellonema brachyurus, from Soil of a Garden in Crete, Greece

Members of the genus Scutellonema can cause substantial crop losses to ornamental and cultivated plants directly by feeding ectoparasitically on plant roots (Bridge et al., 2005; Coyne et al., 2006). In May 2015, a soil sample from a house garden from Heraklion city in Crete, Greece, was sent for diagnosis of plant-parasitic nematodes. In this place, there had been cactus (Opuntia sp.) plants (probably imported), which were uprooted 3 to 4 years earlier. After that, the area was

EMMANUEL A. TZORTZAKAKIS, CAROLINA CANTALAPIEDRA-NAVARRETE, ANTONIO ARCHIDONA-YUSTE, JUAN E. PALOMARES-RIUS, PABLO CASTILLO

Journal of Nematology , ISSUE 1, 7–7

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