Assessment and full scale failure test of a steel truss bridge

Häggström, Jens; Blanksvärd, Thomas

doi:10.2749/222137814814070299

Cited by 5 publications

(5 citation statements)

References 6 publications

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“…If the shape of the structure, the stress of the position to make the system that has changed significantly, and can't use the analysis method of linear system is called a geometric nonlinearity, such as the structure of the large deformation and large deflection, etc. There is a class of nonlinear problem is the nonlinear boundary condition, or nonlinear contact, such as various kinds of contact problem [4][5].…”

Section: Our Proposed Methodologymentioning

confidence: 99%

Research on the Experimental and the Testing Mode of Highway Bridge Load Capacity based on Static Analysis

Pan¹,

Zhu²

2016

Proceedings of the 2016 2nd International Conference on Social Science and Technology Education (ICSSTE 2016)

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In this paper, we conduct research on the experimental and the testing mode of the highway bridge load capacity based on the static analysis. Modal parameters is refers to the bridge structure calculation of modal frequencies and mode shapes and modal parameters such as the quality. Modal parameters method and other methods differed from the load transverse distribution influence line is composed of the modal parameters are calculated out as every piece of beam deflection; Secondly, according to the modal flexibility from the deformation of beams in the mid-span position of value, according to the deformation value and beam on the number of slices, calculation, draw the influence line of transverse distribution of load. Under this guidance, we enhance the traditional methodologies with the static analysis that will achieve better performance.

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Section: Our Proposed Methodologymentioning

confidence: 99%

Research on the Experimental and the Testing Mode of Highway Bridge Load Capacity based on Static Analysis

Pan¹,

Zhu²

2016

Proceedings of the 2016 2nd International Conference on Social Science and Technology Education (ICSSTE 2016)

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show abstract

“…In order to estimate the ultimate capacity a detailed FEM model was developed with the Abaqus software. The model consists of shell elements considering all connections as rigid [15]. Figure 8.…”

Section: Test-setup and Capacity Assessmentmentioning

confidence: 99%

“…Figure 8. Connection for the horizontal bracing which makes the longitudinal stringers sensitive for fatigue [15].…”

Section: Test-setup and Capacity Assessmentmentioning

confidence: 99%

“…The bridge was therefore partially riveted and partially welded. The bridge was designed for a single track with a load of type F46 (12 axles of 25 tons for the locomotive and a distributed load of 85 kN/m), Häggström and Blanksvärd [15]. The capacity of the Åby Bridge was assessed in 1994.…”

Section: Introductionmentioning

confidence: 99%

“…When the Swedish Traffic Administration decided to replace the track and superstructure of the Åby Bridge, measurements were performed during the autumn of 2012 just before the bridge was taken out of service. Then the bridge was placed beside the track on temporary supports and tested to failure during the autumn of 2013 [15].…”

Section: Introductionmentioning

confidence: 99%

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Tested versus code capacity of existing bridges - Three examples

et al. 2015

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This paper presents the results from three tests to failure of different types of bridges: a two span reinforced concrete railway trough bridge; a five-span prestessed concrete beam bridge; and a one span metal railway truss bridge. The results show that the capacity of the structures are underestimated by current standards, while numerical analysis combined with material testing can provide more accurate results. Some examples are also presented on how deficiencies in capacity can be mitigated using fiber reinforced polymer strengthening systems.

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Extend the life of existing railway bridges – Results from EU FP7 project MAINLINE

Nilimaa¹,

Häggström²,

Blanksvärd³

et al. 2015

IABSE Reports

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There is a need to extend the life and capacity of many existing bridges. One of the objects of the EU FP7 Project MAINLINE, 2011-2014, was to facilitate this. Guidelines for assessment and strengthening methods are presented as well as case studies in which existing bridges are studied in order to extend their life length.One example is the prestressing of the slab in a one-span concrete trough bridge in order to increase its load-carrying capacity. Horizontal holes were drilled trough the slab and in them steel bars were placed and post-tensioned. In this way a compressive stress was introduced into the concrete section so that it’s bending and shear capacity was increased.In another study a metal truss bridge was monitored in order to check strain and stress ranges in critical connections to enable an enhanced evaluation of the remaining fatigue resistance. The studied bridge was then replaced and loaded to failure to study its robustness and the reliability of applied assessment methods. The results could then be applied to prolong the life of an identical twin bridge located in the northern part of Sweden.A Life Cycle Assessment Tool (LCAT) has been developed to enable Infrastructure Managers to choose optimal maintenance strategies.

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Assessment and full scale failure test of a steel truss bridge

Cited by 5 publications

References 6 publications

Research on the Experimental and the Testing Mode of Highway Bridge Load Capacity based on Static Analysis

Research on the Experimental and the Testing Mode of Highway Bridge Load Capacity based on Static Analysis

Tested versus code capacity of existing bridges - Three examples

Extend the life of existing railway bridges – Results from EU FP7 project MAINLINE

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