Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Load carrying capacity assessment of stone masonry arch bridges
The aim of this master thesis is to assess the load carrying capacity of a number of masonry arch bridges with backfill for the Swedish Transport Administration (Trafikverket) and determine the load bearing capacity. Most of these bridges were constructed during the 19th and 20th centuries, with span lengths ranging from 3 – 7 m.The assessment is based on Heyman's plastic theory on the collapse mechanisms of masonry arch bridge. According to Heyman's theory, when a load applied on the quarter of the span, four hinges are developed during the collapse of the arch bridge.The bridges have been assessed using finite element (FE) analysis and a 2D parametric model was built using Abaqus/CAE, Matlab and Python and developing an approach to simulate the collapse mechanism of arch bridges by forming four hinges. Additionally, the software Limitstate-RING was used to assess the bridges and compare the results.In an experiment conducted by Melbourne and Gilbert at the Bolton Institute, a series of laboratory-built arch bridges with varying span lengths were constructed. The objective was to observe the collapse mechanism and to record the corresponding failure load for each bridge. As a reference case to validate the effectiveness of the model and select appropriate material properties for the analysis of Trafikverket's bridges, two Bolton bridges with single spans of 3 m and 5 m were specifically chosen.The assessment results showed that all the studied bridges were structurally safe and did not show any risk of collapse, although this assessment did not consider potential failure modes like shear or crushing. The load factor at the first hinge varied between 2 – 7 times the applied load on the bridges. Furthermore, the results showed a significant correlation between the stiffness of the backfill and the overall load-carrying capacity of the bridge.
Load carrying capacity assessment of stone masonry arch bridges
The aim of this master thesis is to assess the load carrying capacity of a number of masonry arch bridges with backfill for the Swedish Transport Administration (Trafikverket) and determine the load bearing capacity. Most of these bridges were constructed during the 19th and 20th centuries, with span lengths ranging from 3 – 7 m.The assessment is based on Heyman's plastic theory on the collapse mechanisms of masonry arch bridge. According to Heyman's theory, when a load applied on the quarter of the span, four hinges are developed during the collapse of the arch bridge.The bridges have been assessed using finite element (FE) analysis and a 2D parametric model was built using Abaqus/CAE, Matlab and Python and developing an approach to simulate the collapse mechanism of arch bridges by forming four hinges. Additionally, the software Limitstate-RING was used to assess the bridges and compare the results.In an experiment conducted by Melbourne and Gilbert at the Bolton Institute, a series of laboratory-built arch bridges with varying span lengths were constructed. The objective was to observe the collapse mechanism and to record the corresponding failure load for each bridge. As a reference case to validate the effectiveness of the model and select appropriate material properties for the analysis of Trafikverket's bridges, two Bolton bridges with single spans of 3 m and 5 m were specifically chosen.The assessment results showed that all the studied bridges were structurally safe and did not show any risk of collapse, although this assessment did not consider potential failure modes like shear or crushing. The load factor at the first hinge varied between 2 – 7 times the applied load on the bridges. Furthermore, the results showed a significant correlation between the stiffness of the backfill and the overall load-carrying capacity of the bridge.
Load carrying capacity assessment of stone masonry arch bridges
Yazen Masri, Mohamed (Autor:in) / Baghdy, Yacob (Autor:in)
01.01.2024
24518
Hochschulschrift
Elektronische Ressource
Englisch
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