Composite dowels are known as powerful shear connectors in steel-concrete-composite girders. More and more they are used in practice especially for prefabricated composite bridges. Advantages over headed studs are in particular the increased strength, the sufficient deformation capacity even in high strength concrete and the simple application in steel sections without upper flange. However, missing provisions in standards for composite dowels with the economic clothoid and puzzle strip have led to retentions of clients and delays in the approval process. Hence, the aim of the recently finished German research project P804 [15] founded by FOSTA- Research Association for Steel Application was to solve open questions concerning these innovative shear connectors and to prepare a general technical approval available for any design office and construction company. In this paper design concepts for ultimate limit state and fatigue limit state, structural design principles and instructions for production and construction are presented and background information are given.
[1]
H.-P. Andrä,et al.
Neues, vorteilhaftes Verbundmittel für Stahlverbund‐Tragwerke mit hoher Dauerfestigkeit.
,
1987
.
[2]
Josef Hegger,et al.
Neue Untersuchungen zum Ermüdungsverhalten von Verbundträgern aus hochfesten Werkstoffen mit Kopfbolzendübeln und Puzzleleiste
,
2007
.
[3]
Josef Hegger,et al.
Verbundträger mit Puzzleleisten und hochfesten Werkstoffen
,
2012
.
[4]
Günter Seidl,et al.
Zum Tragverhalten von Verbunddübeln — Teil 2: Ermüdungsverhalten
,
2011
.
[5]
Ingbert Mangerig,et al.
Zum Einsatz von Betondübeln im Verbundbau (Teil 2) – Nichtruhende Beanspruchung
,
2011
.
[6]
André Dürr,et al.
Zur Bemessung von Lochleisten als duktile Verbundmittel in Verbundträgern aus höherfesten Materialien
,
2009
.
[7]
Günter Seidl,et al.
Zum Tragverhalten von Verbunddübeln – Teil 1: Tragverhalten unter statischer Belastung
,
2011
.