Bach Dang cable-stayed bridge – Underslung form traveller
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Bibliographic Details
| Author(s): |
Joakim Dupleix
(VSL Technical Centre, Singapore)
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| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Conference: Engineering the Developing World, Kuala Lumpur, Malaysia, 25-27 April 2018 | ||||
| Published in: | IABSE Conference Kuala Lumpur 2018 | ||||
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| Page(s): | 969-974 | ||||
| Total no. of pages: | 6 | ||||
| DOI: | 10.2749/kualalumpur.2018.0969 | ||||
| Abstract: |
The Bach Dang Bridge forms part of the Ha Long – Hai Phong Highway in Vietnam. It will help cut 50km from the journey between Hanoi and the Ha Long Bay UNESCO world heritage site. The focal cable-stayed section of the bridge will consist of two main spans of 240 m. The tallest of the three towers will reach a height of almost 100 m. The construction technique used for the cable-stayed section is to cast 9.6 m-long and 28 m-wide concrete segments in situ, using an underslung form traveller (FT) which is launched to the next position once the segment is cast. The FT has been designed by the Technical Centre of specialist contractor VSL. Its weight is minimised by using the stay cable as a support at the front of the traveller. The stay cable is connected to the FT by precasting the anchor block and securing it to the FT. This innovation was previously, successfully used by VSL on the Ironton-Russell project in the USA. Besides, the formwork system has been mechanised to be easily collapsed from one segment to the next. This paper discusses the design of this innovative construction technique and how it was used on this major bridge project in Vietnam. |
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| Keywords: |
bridge stay cables construction engineering Form-Traveller bridge equipment
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