scholarly journals Contribution of radar measurements to the inspection and condition assessment of railway bridges – case study at a historic masonry arch bridge in Oleśnica/Poland

2008 ◽  
Author(s):  
Ch. Trela ◽  
J. Wöstmann ◽  
S. Kruschwitz
Keyword(s):  
Condition Assessment ◽  
Masonry Arch ◽  
Arch Bridge ◽  
Railway Bridges ◽  
Historic Masonry ◽  
Radar Measurements ◽  
Masonry Arch Bridge

Rehabilitation of Historic Railway Masonry Arch Bridge: A Case Study

2015 ◽  
Vol 21 (4-6) ◽  
pp. 107-117
Author(s):  
S. K. Elwan
Keyword(s):  
Finite Element ◽  
Water Flow Rate ◽  
Construction Materials ◽  
Internal Stresses ◽  
Masonry Arch ◽  
Element Analysis ◽  
Arch Bridge ◽  
Historic Masonry ◽  
Masonry Arch Bridge

Abstract This research outlines a case study for the structural rehabilitation of a historic masonry arch bridge. The major part of the railway bridge was destroyed due to high flood. The remaining parts were evaluated from structural point of view. A detailed investigation for the historic and current state of the bridge was performed. A precise description for the structural system, main elements, method of construction, materials used, and internal component was done. Also, 3D finite element analysis was conducted for the proposed rehabilitated bridge in order to identify the level of internal stresses in different structural components of the arch bridge under the effect of dead loads, live loads, wind loads, seismic loads, water flow rate, and temperature changes. The results of the finite element modeling together with the structural studies and investigations were used to develop structural guidelines for the rehabilitation project taking into account the proposed new usage as a historic walkway and the hydrological requirements as a structure over flood flow channel.

A Survey on Formation Multi Unequal Span Masonry Bridges with Curve Shaped Deck: A Case Study on Khan Bridge in Iran

2013 ◽  
Vol 405-408 ◽  
pp. 1606-1610
Author(s):  
Zohreh Zahiri ◽  
Dariush Heydari Beni
Keyword(s):  
Structural Stability ◽  
Masonry Arch ◽  
Arch Bridge ◽  
South West ◽  
River Bed ◽  
Arch Bridges ◽  
Masonry Arch Bridge

Masonry arch bridges with unequal spans are outstanding kinds of masonry bridges which are widespread in historic countries spatially in Iran. The differences in dimension of arches which mostly lead to formation of curve shaped decks in such bridges, brings a particular architecture for masonry arch bridge. However the elements which bring different lengths and heights for spans have not yet been studied. In this research by geometrical and structural survey on Khan Bridge, a kind of multi unequal span bridge in south west of Iran, it is demonstrated that especial conditions of the case lead to formation of its architecture. It is illustrated that shape of river bed, hydraulic and geotectonic factors and structural stability, are of paramount importance in terms of featuring the architecture of multi unequal span bridges with curve shaped deck.

scholarly journals CAPACITY ASSESSMENT OF ANCIENT MASONRY ARCH BRIDGE: A CASE STUDY

2020 ◽  
Vol 7 (2) ◽  
Author(s):  
Jigme Dorji ◽  
Tatheer Zahra ◽  
David P. Thambiratnam
Keyword(s):  
Limit State ◽  
Capacity Assessment ◽  
Analysis Method ◽  
Masonry Arch ◽  
Railway Bridges ◽  
Margin Of Safety ◽  
Arch Bridges ◽  
Masonry Arch Bridge ◽  
Current Operating

Most masonry arch railway bridges in the world are servicing the communities well beyond their intended design lives. However, these bridges would have undergone numerous deteriorations over the period of several decades of service life. The asset owners of these bridges are confronted with the decision over whether to continue servicing or decommissioning these bridges. Such decisions are critical from safety and economic points of views, and it can be addressed only by conducting a proper investigation of such structures. This paper presents the capacity assessment of typical in-service masonry arch bridges based on properties of masonry obtained through core testing. The bridges were modeled and analyzed for the ultimate capacity through limit state analysis method. Important parameters such as influence of backfill properties, strength of masonry, and span-to-rise ratio are discussed. The results indicate that the investigated bridges can sustain the current operating loads with a reasonable margin of safety index.

Structural Analysis of Historic Masonry Arch Bridges: Case Study of Clemente Bridge on Savio River

2011 ◽  
Vol 488-489 ◽  
pp. 674-677 ◽  
Author(s):  
Lucio Nobile ◽  
Veronica Bartolomeo ◽  
Mario Bonagura
Keyword(s):  
18Th Century ◽  
Limit State ◽  
Masonry Arch ◽  
Historic Masonry ◽  
Bridge Safety ◽  
Live Loads ◽  
Vehicle Loads ◽  
Arch Bridges ◽  
Masonry Arch Bridge

The Clemente Bridge is a multi-span masonry arch bridge built during the 18th century on Savio River in Cesena. The aim of this paper is to assess its static capacity under live loads prescribed by Italian Standards in force. The analysis is performed employing RING 3.0, a computational tool based on Limit State Analysis. This method allows to individuate the minimum adequacy factor, that is the multiplier on vehicle loads required to cause collapse. In this way, a first assessment on the bridge safety can be obtained.

scholarly journals Health Monitoring of Masonry Arch Bridges by Integration of GPR and InSAR Techniques

2020 ◽  
Author(s):  
Valerio Gagliardi ◽  
Luca Bianchini Ciampoli ◽  
Fabio Tosti ◽  
Andrea Benedetto ◽  
Amir M. Alani
Keyword(s):  
Ground Penetrating Radar ◽  
Transport Infrastructure ◽  
Synthetic Aperture ◽  
Masonry Arch ◽  
Arch Bridge ◽  
Historic Masonry ◽  
Infrastructure Monitoring ◽  
Ground Penetrating ◽  
Non Destructive ◽  
Masonry Arch Bridge

<p>Approximately 70,000 masonry arch bridge spans (brick and stone) are reported to exist in the United Kingdom with in excess of tens of thousands throughout Europe. A good portion of these bridges is still operational and form part of the road and rail network systems in many countries. However, a great majority of these structures require desperate repair and maintenance [1].</p><p>Non-destructive testing (NDT) methods such as ground penetrating radar (GPR), 3D laser scanning, accelerometer sensors and thermal cameras amongst many others have been used to assess and monitor such structures in the past few years [2]. However, research has proven that stand-alone or integrated use of ground-based techniques may not represent a definitive solution to some major structural issues, such as scour and differential settlements [3], as these require continuous monitoring and data collection on long-term basis. To that extent, use of satellite data-based synthetic aperture radar (SAR) interferometry (InSAR) has proven to be effective in measuring displacements of infrastructure [4] [5] and natural terrain [6] over longer periods of observation.</p><p>Within this context, the paper presents a new integrated monitoring approach including use of the GPR and the InSAR techniques to an historic masonry arch bridge - the Old Aylesford Bridge in Kent, UK – a 13<sup>th</sup> century bridge, crossing the river Medway. Main objectives of the research were: (1) to prove the viability of low-frequency and high-frequency GPR systems in providing structural detailing of the bridge deck at different depths and resolutions; (2) to be able to measure structural displacements with a millimetre accuracy caused by the seasonal variation of the water level in the river and the river bed soil expansions. Results have proven the viability of the above process to form the basis for an integrated health monitoring mechanism.</p><p> </p><p>References</p><p>[1] Alani, A.M., Tosti, F., Banks, K., Bianchini Ciampoli, L., Benedetto, A. Non-Destructive Assessment of a Historic Masonry Arch Bridge Using Ground Penetrating Radar and 3D Laser Scanner, IMEKO International Conference on Metrology for Archaeology and Cultural Heritage Lecce, Italy, October 23-25, 2017.</p><p>[2] Solla, M., Lorenzo, H., Rial, F.I., Novo, A. (2011). GPR evaluation of the Roman masonry arch bridge of Lugo (Spain), NDT&Int., 44, 8-12.</p><p>[3] Selvakumaran, S., Plank, S., Geiß, C., Rossi, C., Middleton, C. (2018). Remote monitoring to predict bridge scour failure using Interferometric Synthetic Aperture Radar (InSAR) stacking techniques, Int. J. .Appl. Earth Obs. and Geoinf. 73, 463-470.</p><p>[4] Tosti, F., Gagliardi, V., D'Amico, F. and Alani, A.M., Transport infrastructure monitoring by data fusion of GPR and SAR imagery information. TIS 2019 International Conference of Rome, 23-24 September 2019.</p><p>[5] Bianchini Ciampoli, L., Gagliardi, V., Clementini, C. et al. (2019). Transport Infrastructure Monitoring by InSAR and GPR Data Fusion. Surv Geophys. https://doi.org/10.1007/s10712-019-09563-7</p>

scholarly journals Dynamic load testing of a railway masonry arch bridge: A case study of Babak Bridge

2017 ◽  
Vol 24 (4) ◽  
pp. 1834-1842 ◽  
Author(s):  
Sh. Ataei ◽  
A. Miri ◽  
M. Tajalli
Keyword(s):  
Dynamic Load ◽  
Load Testing ◽  
Masonry Arch ◽  
Arch Bridge ◽  
Masonry Arch Bridge

scholarly journals REFURBISHMENT OF THE MASONRY ARCH ON MERXEM STREET BRIDGE

2015 ◽  
Vol 2 (1) ◽  
Author(s):  
Amelie Outtier ◽  
Bart De Pauw ◽  
Philippe Van Bogaert ◽  
Hans De Backer
Keyword(s):  
Failure Modes ◽  
Precast Concrete ◽  
Masonry Arch ◽  
Arch Bridge ◽  
Railway Bridges ◽  
Load Carrying ◽  
Ultimate Load Carrying Capacity ◽  
Concrete Elements ◽  
Concrete Deck ◽  
Masonry Arch Bridge

Due to the widening of the Albert Canal, several railway bridges were replaced by longer spans on new embankments. With a change in overall length profile, two railway bridges needed refurbishment. The Merxem Street Bridge, a classic masonry arch bridge, had a new tubular arch bridge built adjacent. Due to time, increased traffic, ballast, loads, and volumes on the bridge since the early 1900s, it was strengthened because of the bridge’s historical value and structural soundness. A new concrete deck was installed on top of the masonry arch ensuring that the higher live as well as dead loads would be spread over the arch length. This new deck was a combination of precast concrete elements with on-site concrete construction. This research focuses on this combined concrete design and its realization. The ultimate load-carrying capacity of both the existing and strengthened situation was verified using rigid block analysis. Critical failure modes were checked and the strengthening avoided the most precarious modes.

Sign in / Sign up

Export Citation Format

Share Document