A Rapid Detection Method for Bridges Based on Impact Coefficient of Standard Bumping

Liu, Xiaolan; Zhang, Xianmin; Wang, Yadong

doi:10.1155/2018/9195289

Cited by 3 publications

(2 citation statements)

References 17 publications

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“…The structural response to dynamic loads is fundamental for analysing its behaviour and integrity. The dynamic response is analysed by comparing their values with structural design standards [7], [8].…”

Section: Dynamic Amplification Factor (Daf)mentioning

confidence: 99%

Railway Arc Bridge Analysis Through Dynamic Tests

Braz¹,

Martins

Ortigão³

et al. 2023

EJENG

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This paper presents the dynamic monitoring carried out on a 458 m long railway Papagaios Bridge in Brazil. This is a concrete arch bridge built over 60 years ago, which needed repairs. The dynamic monitoring was designed to carry out a structural integrity assessment and to calibrate a numerical model to be used for the structural rehabilitation design. Vibration measurements were carried out on the bridge in selected locations. This paper addresses data analysis, the impact measurements when a train enters the bridge and modal analysis.

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Section: Dynamic Amplification Factor (Daf)mentioning

confidence: 99%

Railway Arc Bridge Analysis Through Dynamic Tests

Braz¹,

Martins

Ortigão³

et al. 2023

EJENG

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“…Studies concerning the behaviour of newly created bridge structures are often concerned primarily with the presentation of results [ 37 ]. Therefore, while issues pertaining to numerical modelling have advanced considerably, the question of how measurement methods might be refined remains largely unresolved [ 38 , 39 ]. Therefore, despite obtaining relatively good results from the FEM model, measurement methodologies have limitations that we have endeavoured to minimise using laser scanning technology, as described above.…”

Section: Introductionmentioning

confidence: 99%

Bridge Non-Destructive Measurements Using a Laser Scanning during Acceptance Testing: Case Study

2022

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Owing to the recent proliferation of inventory works on roads and railways, bridge acceptance tests have increased exponentially. These tests’ results are often misinterpreted owing to the use of various measuring equipment types, rendering integrated interpretation problematic. It is also problematic that adjusting the measurement method is difficult when the structure’s response to load is uncertain. Therefore, it is important to observe the largest possible range of possible deformations. For this reason, the present study suggests a novel approach to bridge non-destructive measurements using a laser scanner during acceptance testing. The main advantage of our method is the ability it affords to observe all points of the structure during testing, an ability that is extremely important is the absence of unambiguous data regarding the bridge’s condition. To significantly increase the scanning accuracy (up to 0.5 mm), measurements from a limited number of linear sensors are used (whose accuracy is up to 0.1 mm). To achieve optimal accuracy, we performed the following steps: first, we adapted the precision requirements to the numerical project. For this purpose, we used potentiometric sensors to measure linear deformations. Next, we performed laser scanning measurements from two scan positions. Finally, we filtered the data for the selected cross-section and modelled the points into polynomial deflection. The performed tests confirmed that the structure’s response was as predicted by the FEM model, and the object was approved for use. Our future tests will be based on the selection of a structure with minimal measurement errors, and the results will be compared using a total station, ensuring the highest possible quality of service, which can be repeated in simple steps. As study objects, we presented two items: the first without proper calibration on a linear sensor and the second using linear sensors to present the highest possible accuracy of our experiment.

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Hybrid Evaluation Method of Bridge Bearing Capacity

Lu,

M. Easa,

et al. 2024

BJRBE

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This study proposes a new method to assess the bearing capacity of similar bridges while avoiding the disadvantages of costly static loading tests. First, we present a detailed evaluation of the bearing capacity for a repaired pre-stressed concrete continuous-beam bridge following a ship collision. We have developed a finite element model, modified it, and combined with two other methods to evaluate its bearing capacity. The first method proposed is the bridge design code-based method, where the bearing capacity is assessed using specified design parameters. The second is the field test-based method, where the bearing capacity is evaluated using field tests combined with structural appearance observation. Considering the relative merits of these two methods, a new and improved method for bearing capacity evaluation is proposed and implemented by combining the design code, finite element model, and field loading tests. The innovation and contribution of this paper lie in obtaining modal parameters through a convenient dynamic load test to predict the static behaviour of the bridge structure based on the modified finite element model. Based on the dynamic test results, the static behaviour of the bridge, predicted by the modified finite element analysis, and the appearance test data of the bridge structure, the bearing capacity of the bridge structure is evaluated.

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A Rapid Detection Method for Bridges Based on Impact Coefficient of Standard Bumping

Cited by 3 publications

References 17 publications

Railway Arc Bridge Analysis Through Dynamic Tests

Railway Arc Bridge Analysis Through Dynamic Tests

Bridge Non-Destructive Measurements Using a Laser Scanning during Acceptance Testing: Case Study

Hybrid Evaluation Method of Bridge Bearing Capacity

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