Second Severn Crossing - Cable-Stayed Bridge.

Mizon, D H; Smith, Nick; Yeoward, Andrew

doi:10.1680/icien.1997.29859

Cited by 7 publications

(1 citation statement)

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“…However, the cable crane was more sensitive to temperature variation than the steel Deck configuration adjustment is a key step prior to closure of a cable-stayed bridge. Substantial counterweights are usually the first choice for getting appropriate vertical alignment of the cantilever tips (Ishikura et al, 2012;Mison et al, 1997;Morgenthal et al, 2010). However, in this case the geometry adjustment was achieved by optimising cable forces.…”

Section: Innovative Construction Solutionmentioning

confidence: 99%

Yachihe Bridge, China: engineering the world’s longest cable-stayed steel truss

YuXiangmin

ChenDewei

XueMenggui

2018

Proceedings of the Institution of Civil Engineers - Civil Engin

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The bridge is a hybrid cable-stayed structure (Figure 2). The 800 m main span is a steel-truss deck and the side spans are twin-box concrete girders 27·7 m wide and 8·2 m deep. The pylons are 'H' shaped with heights of 243 m and 258 m on the Guiyang and Qianxi sides, respectively. IntroductionYachihe Bridge has set a new record as the world's longest steeltruss cable-stayed bridge (Figure 1) Yachihe Bridge in China is the longest steel-truss, cable-stayed bridge in the world and the tenth longest overall. Completed in 2016, its 800 m main span carries the new Guiyang-Qianxi dual carriageway over the Yachihe River gorge. It is also the first cable-stayed bridge to be erected using a cable crane, and its concrete-box-girder side spans feature the first use of cable anchorages in the middle of the outer web. Furthermore, geometry alignment during deck closure was achieved by adjusting cable forces rather than by using counterweights. This paper describes the configuration and numerical analysis of the innovative cable anchorage, discusses the challenges and solutions involved in using a cable crane for construction and details the novel closure techniques adopted for the steel-truss deck. Proceedings of the Institution of Civil EngineersCivil Engineering 171 February 2018

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Section: Innovative Construction Solutionmentioning

confidence: 99%