Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Secondary tensioning prestressed assembly-type corrugated steel web composite beam and construction method thereof
The invention discloses a secondary tensioning prestressed assembly-type corrugated steel web composite beam. The composite beam comprises a composite beam unit which is formed in a way that a plurality of prefabricated corrugated steel web beam bodies are connected, each prefabricated corrugated steel web beam body comprises a corrugated steel web, a concrete top plate and a concrete base plate, the concrete top plate is connected with the corrugated steel web through an upper connecting piece, and the concrete base plate is connected with the corrugated steel web through a lower connecting piece; the transverse connecting end of each of the concrete top plate and the concrete base plate is provided with a transverse connecting steel bar, vertical connecting steel bars are arranged in the concrete top plate and the concrete base plate in balance, primary tensioning prestressed channels and secondary tensioning prestressed channels are arranged in the concrete base plate symmetrically, primary tensioning prestressed steel beams are arranged in the primary tensioning prestressed channels in a penetrating manner, and secondary tensioning prestressed steel beams are arranged in the secondary tensioning prestressed channels in a penetrating manner. The invention also provides a construction method of the composite beam. According to the invention, the prestressed steel beams are tensioned twice, inflected arch phenomena, of the prefabricated corrugated steel web beam bodies, caused by concrete shrinkage and creep can be reduced, the erection precision of the bridge is improved, and the usage performance of the prestressed assembly-type corrugated steel web composite beam can be improved.
Secondary tensioning prestressed assembly-type corrugated steel web composite beam and construction method thereof
The invention discloses a secondary tensioning prestressed assembly-type corrugated steel web composite beam. The composite beam comprises a composite beam unit which is formed in a way that a plurality of prefabricated corrugated steel web beam bodies are connected, each prefabricated corrugated steel web beam body comprises a corrugated steel web, a concrete top plate and a concrete base plate, the concrete top plate is connected with the corrugated steel web through an upper connecting piece, and the concrete base plate is connected with the corrugated steel web through a lower connecting piece; the transverse connecting end of each of the concrete top plate and the concrete base plate is provided with a transverse connecting steel bar, vertical connecting steel bars are arranged in the concrete top plate and the concrete base plate in balance, primary tensioning prestressed channels and secondary tensioning prestressed channels are arranged in the concrete base plate symmetrically, primary tensioning prestressed steel beams are arranged in the primary tensioning prestressed channels in a penetrating manner, and secondary tensioning prestressed steel beams are arranged in the secondary tensioning prestressed channels in a penetrating manner. The invention also provides a construction method of the composite beam. According to the invention, the prestressed steel beams are tensioned twice, inflected arch phenomena, of the prefabricated corrugated steel web beam bodies, caused by concrete shrinkage and creep can be reduced, the erection precision of the bridge is improved, and the usage performance of the prestressed assembly-type corrugated steel web composite beam can be improved.
Secondary tensioning prestressed assembly-type corrugated steel web composite beam and construction method thereof
TANG YI (Autor:in) / LI FEIRAN (Autor:in) / YUAN BO (Autor:in) / ZHANG CUNCHAO (Autor:in) / LI YUPENG (Autor:in)
21.10.2015
Patent
Elektronische Ressource
Englisch
IPC:
E01D
BRIDGES
,
Brücken
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