Strengthening of Masonry Arch Bridges with Near-Surface Reinforcement: A Case Study

The importance of masonry arch bridges as a traffic network element calls for a thorough analysis focused on both structural stability and loading capacity of these historical structures, considering the usage of these bridges in contemporary traffic conditions. This paper focuses on the analysis of longitudinal cracks in a single span masonry arch bridge to evaluate its influence on structural behaviour of the system. As longitudinal cracks do not necessarily present an inevitable collapse mechanism, analysis of the causes is crucial for evaluating the serviceability and functionality of the bridge investigated. The methodology is based on the following: literature review, observation of the stone bridge in Ivanjica, geological testing of the site, geophysical testing of the bridge, laboratory testing of mechanical characteristics of stone used for the bridge construction and biological analysis of the samples of implemented materials on the bridge. Finite element analysis of the bridge was conducted to define the causes of the longitudinal cracks. The 3D simulation model was based on the data collected through observation and experimental analysis. This paper provides extensive research on a single span masonry bridge, examining how different deterioration mechanisms, in conjunction, can lead to the appearance of cracks in masonry arch bridges and provide remedial measures accordingly.

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Survey Methodologies and Intervention in Stone Masonry Arch Bridges: The Case Study of Esmoriz Bridge

Structural Integrity - Proceedings of ARCH 2019 ◽

10.1007/978-3-030-29227-0_100 ◽

2019 ◽

pp. 901-908

Author(s):

Esmeralda Paupério ◽

Rúben Silva ◽

Cristina Costa ◽

António Arêde

Keyword(s):

Stone Masonry ◽

Masonry Arch ◽

Arch Bridges ◽

Survey Methodologies

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

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.405-408.1606 ◽

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.

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CAPACITY ASSESSMENT OF ANCIENT MASONRY ARCH BRIDGE: A CASE STUDY

Proceedings of International Structural Engineering and Construction ◽

10.14455/isec.2020.7(2).str-47 ◽

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.

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

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.488-489.674 ◽

2011 ◽

Vol 488-489 ◽

pp. 674-677 ◽

Cited By ~ 2

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.

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Uncertainty sources in the structural assessment of masonry arch bridges: a case study of a single-span stone arch bridge

IABSE Symposium, Guimarães 2019: Towards a Resilient Built Environment Risk and Asset Management ◽

10.2749/guimaraes.2019.1766 ◽

2019 ◽

Author(s):

Borja Conde ◽

Belén Riveiro ◽

Manuel Cabaleiro ◽

Jose Carlos Caamaño ◽

Georgios E. Stavroulakis

Keyword(s):

Laser Scanner ◽

Critical Parameters ◽

Assessment Procedure ◽

Masonry Arch ◽

Structural Assessment ◽

Arch Bridge ◽

Uncertainty Sources ◽

Arch Bridges ◽

The Impact

<p>In this work, the evaluation of some of the most common uncertain parameters present in the structural assessment procedure of masonry arch bridges is addressed. The Xuño Bridge, a single- span stone arch bridge located in Galicia (Spain) is considered as a case study. This structure presents the particularity that after hundreds of years, all its constructive elements have disappeared except the arch barrel. Thus, the typical scattering in the thickness of this element can be measured and quantified. For that purpose, an in-situ terrestrial laser scanner survey was conducted, acquiring its exact geometry. An uncertainty analysis, considering geometrical and material parameters, was then conducted with the aim of estimating the impact of the uncertainty sources in the prediction of the collapse load of the arch. Two different numerical modeling strategies were employed, the limit analysis approach and the finite element method. A sensitivity analysis was finally performed to identify the critical parameters on the response of the structure.</p>

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A hydrochemical and isotopic case study around a near surface radioactive waste disposal

Radiochimica Acta ◽

10.1524/ract.2007.95.1.55 ◽

2007 ◽

Vol 95 (1) ◽

Author(s):

Zs. Szántó ◽

É. Svingor ◽

I. Futó ◽

L. Palcsu ◽

M. Molnár ◽

...

Keyword(s):

Radioactive Waste ◽

Waste Treatment ◽

Radioactive Waste Disposal ◽

Ion Chemistry ◽

Continuous Transition ◽

Near Surface ◽

Disposal Facility ◽

Treatment And Disposal ◽

Site Characterisation

As part of the site characterisation program for the near surface radioactive waste treatment and disposal facility (RWTDF) at Püspökszilágy, Hungary, water quality and environmental isotope investigations have been carried out. Water samples for major ion chemistry, tritium,The chemical composition of groundwaters presented a continuous transition from waters situated on one side to waters on the top and on the other slope of the disposal suggesting the mixing of the three hydrochemical “endmembers”.Most of δ

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