Peace Bridge, Londonderry: design and construction

Brown, Philip; Kuhendran, Kandiah; Marks, James G.

doi:10.1680/bren.14.00004

Cited by 5 publications

(3 citation statements)

References 4 publications

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“…Pylons are at Support 3 and Support 4, where all degrees of freedom are restrained, although small longitudinal movement of 5mm is allowed. The details of the design and construction of Peace Bridge, which spans the Foyle River and is a symbol of renewed cooperation between religious communities can be found in the literature [42]. In 2016 Full scale Dynamics Ltd (FSDL) in collaboration with Queen's University Belfast (QUB) were commissioned by Transport NI to investigate the dynamic response of the Peace Bridge to crowd loading on the 30 th -31 st of October 2016.The Halloween period was chosen to carry out the test as the bridge forms a central element of a large Halloween festival and there are large numbers of pedestrians on the bridge.…”

Section: Field Trial 2 -Peace Bridgementioning

confidence: 99%

Development and field testing of a vision-based displacement system using a low cost wireless action camera

Lydon

Taylor

et al. 2019

Mechanical Systems and Signal Processing

123

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This paper describes development of a contactless, low cost vision-based system for displacement measurement of civil structures. Displacement measurements provide a valuable insight into the structural condition and service behaviour of bridges under live loading. Conventional displacement gauges or GPS based systems have limitations in terms of access to the infrastructure and accuracy. The system introduced in this paper provides a low cost durable alternative which is rapidly deployable in the field and does not require direct contact or access to the infrastructure or its vicinity. A commercial action camera was modified to facilitate the use of a telescopic lens and paired with the development of robust displacement identification algorithms based on pattern matching. Performance was evaluated first in a series of controlled laboratory tests and validated against displacement measurements obtained using a fibre optic displacement gauge. The efficiency of the system for field applications was then demonstrated by capturing the validated bridge response of two structures under live loading including the iconic peace bridge. Located in the City of Derry, Northern Ireland, the Peace Bridge is a 310m curved self-anchored suspension pedestrian bridge structure. The vision-based results of the field experiment were confirmed against displacements calculated from measured accelerations during a dynamic assessment of the structure under crowd loading. In field applications the developed system can achieve a root mean square error (RMSE) of 0.03mm against verified measurements.

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Section: Field Trial 2 -Peace Bridgementioning

confidence: 99%

Development and field testing of a vision-based displacement system using a low cost wireless action camera

Lydon

Taylor

et al. 2019

Mechanical Systems and Signal Processing

123

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“…In recent years, a variety of new bridge structures have emerged in the world, and the spatial special-shaped suspension bridge is one of them [1]. Different from the parallel cable plane, the main cable and suspender of the spatial special-shaped cable plane are under spatial stress, and the stress of the overall structure is more complex [2].…”

Section: Introductionmentioning

confidence: 99%

A New Method for Finding the Shape of the Main Cable in the Special Cable Plane

et al. 2022

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The main cable and suspender of the spatial special-shaped suspension bridge are in the state of spatial stress; the structural stress is more complex than that of the parallel cable plane and finding the shape of the main cable of the spatial special-shaped cable plane is more difficult. In order to solve the problem of finding the shape of the main cable of the special-shaped suspension bridge, a new calculation model and algorithm of the main cable are proposed in this paper. The new calculation model adds constraints on the transverse bridge direction coordinates of the midspan on the basis of the original calculation model. The new calculation model can timely correct the calculation errors in all directions of the control node during the main cable shape finding process and improve the calculation accuracy. The new algorithm is a hybrid algorithm. The algorithm first uses the modified quantum genetic algorithm to solve and calculate the cable end force close to the real value, and then uses the cable end force obtained by the modified quantum genetic algorithm as the initial value to iterate through the modified least squares method. In this paper, a single cable plane curved suspension bridge is taken as the research background, and the differences of different calculation models in the shape-finding calculation of the main cable of the spatial special-shaped cable plane are compared. The results show that the proposed model is more stable in the calculation process, and the proposed algorithm has high accuracy and strong adaptability.

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“…The lessons learnt during this restoration will greatly help other structures of a similar age and importance and help maintain this structure for generations to come to be inspired. Brown, Kuhendran and Marks (2015) present a paper on the design and construction of the Peace Bridge in Londonderry, the bridge being a landmark structure both in structural terms and for the role it provides in linking historically divided communities.…”

mentioning

confidence: 99%