Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Continuous Prestressed Bridges Using ``Leadline'' Tendons
The current investigation deals with the response of a newly developed two-span continuous double-T (DT) bridge system, internally and externally prestressed using carbon fiber reinforced polymer (CFRP) Leadline tendons. The effect of pre-tensioning and post-tensioning on the overall strain distribution was examined. The bridge was subjected to an ultimate load test after it had been subjected to 15 million cycles of two repeated loads of constant amplitudes equivalent to the service load at Midspan 1 and twice the service load at Midspan 2. It was concluded that the presence of continuous externally draped CFRP tendons (in the positive and negative moment region), CFRP grids (on both sides of the webs and in the continuous deck slab), and the adjusted (increased) level of external prestressing forces results in a ductile CFRP continuous bridge system.
Continuous Prestressed Bridges Using ``Leadline'' Tendons
The current investigation deals with the response of a newly developed two-span continuous double-T (DT) bridge system, internally and externally prestressed using carbon fiber reinforced polymer (CFRP) Leadline tendons. The effect of pre-tensioning and post-tensioning on the overall strain distribution was examined. The bridge was subjected to an ultimate load test after it had been subjected to 15 million cycles of two repeated loads of constant amplitudes equivalent to the service load at Midspan 1 and twice the service load at Midspan 2. It was concluded that the presence of continuous externally draped CFRP tendons (in the positive and negative moment region), CFRP grids (on both sides of the webs and in the continuous deck slab), and the adjusted (increased) level of external prestressing forces results in a ductile CFRP continuous bridge system.
Continuous Prestressed Bridges Using ``Leadline'' Tendons
Grace, Nabil F. (Autor:in)
International Conference on High Performance Materials in Bridges ; 2001 ; Kona, Hawaii, United States
05.09.2003
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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