Experimental Study on Shear Behavior of Prestressed Ultra-High Performance Concrete I-girders
|
|
|||||||||||
Détails bibliographiques
| Auteur(s): |
Hui Zheng
Zhi Fang |
||||
|---|---|---|---|---|---|
| Médium: | papier de conférence | ||||
| Langue(s): | anglais | ||||
| Conférence: | IABSE Conference: Bridges and Structures Sustainability - Seeking Intelligent Solutions, Guangzhou, China, 8-11 May 2016 | ||||
| Publié dans: | IABSE Conference, Guangzhou, China, 8 – 11 May 2016 | ||||
|
|||||
| Page(s): | 775-785 | ||||
| Nombre total de pages (du PDF): | 11 | ||||
| Année: | 2016 | ||||
| DOI: | 10.2749/222137816819259149 | ||||
| Abstrait: |
As a new generation of concrete, UHPC (Ultra-High Performance Concrete) has attracted great research attention for its ultra-high strength and high durability. In the present paper, experimental results from tests on eight prestressed UHPC I-section girders failing in shear are reported herein. The beams with UHPCof 120 Mpa in compression were designed to assess the ability to carry shear stress in thin webbed prestressed beams with stirrups. The test variables were the level of prestressing, shear span-depth ratio (a/d)and stirrup ratio. Shear deformation, shear capacity and crack pattern were experimentally investigated in detail. The equation based on ACI 544.4r-R1999 Code could better predict the shear strength than ACI 318-11 Code. The mean test to calculation ratio value of ACI 544.4r- R1999 Code was about 1.82. RPC, as a new high performance concrete, was different from high concrete and fiber reinforced concrete. |
||||