A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Three launched composite bridges recently designed and built in Spain
Launching bridges is a well known and usual procedure for erecting bridges where no access is allowed underneath the bridge. Nevertheless, some important details are often ignored while designing and calculating the bridge. The purpose of this paper is to present details of launching of three bridges recently designed and constructed in Spain. The GUADALFEO bridge is a five span continuous steel truss bridge. Central spans are 140 m length and deck width is 24 m. The tallest pier is 85 m high. The girder was launched from the abutment South using a provisional tower for decreasing the 2 m deflection of the tip of the cantilever. The VICARIO bridge is a two span continuous composite bridge. Main span is 87.5 m and deck width is 24 m. The pier is 58 m high. The girder is curved (R= 1420 m) and special care has been taken on distribution of reactions on supports while launching because of eccentricity of actions. The ALVARES bridge is a seven span continuous composite bridge. Main span is 102 m and deck width is 27 m. The tallest pier is 66 m high. Procedure for launching the girder involved varying level of bearings taking into account pre-camber deflections of the girder. Ignoring them supposes increasing bending moments and patch loading effects to unsafe limits.
Three launched composite bridges recently designed and built in Spain
Launching bridges is a well known and usual procedure for erecting bridges where no access is allowed underneath the bridge. Nevertheless, some important details are often ignored while designing and calculating the bridge. The purpose of this paper is to present details of launching of three bridges recently designed and constructed in Spain. The GUADALFEO bridge is a five span continuous steel truss bridge. Central spans are 140 m length and deck width is 24 m. The tallest pier is 85 m high. The girder was launched from the abutment South using a provisional tower for decreasing the 2 m deflection of the tip of the cantilever. The VICARIO bridge is a two span continuous composite bridge. Main span is 87.5 m and deck width is 24 m. The pier is 58 m high. The girder is curved (R= 1420 m) and special care has been taken on distribution of reactions on supports while launching because of eccentricity of actions. The ALVARES bridge is a seven span continuous composite bridge. Main span is 102 m and deck width is 27 m. The tallest pier is 66 m high. Procedure for launching the girder involved varying level of bearings taking into account pre-camber deflections of the girder. Ignoring them supposes increasing bending moments and patch loading effects to unsafe limits.
Three launched composite bridges recently designed and built in Spain
Drei kürzlich in Spanien entworfene und gebaute vorgeschobene Verbundbrücken
Simon-Talero, Jose M. (author) / Merino, Ramon M. (author)
2006
13 Seiten, 15 Bilder
Conference paper
English
Paper 10 Three Launched Composite Bridges Recently Designed and Built in Spain
| British Library Conference Proceedings | 2006
Composite bridges recently built in Germany
| British Library Conference Proceedings | 2002
Online Contents | 1999
Incrementally launched bridges
| British Library Conference Proceedings | 2006