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EXPERIMENTAL STUDY ON MECHANICAL PROPERTIES OF ULTRA-HIGH PERFORMANCE CONCRETE (UHPC) DOUBLE-LIMB THIN-WALLED PIERS



Author(s): Ai-jun Chen, Jia-shuai Yao and Rong-xin Peng
Paper category: Proceedings
Book title: Proceedings of the 2nd International Conference on UHPC Materials and Structures (UHPC2018-China)
Editor(s): Caijun Shi and Baochun Chen
ISBN: 978-2-35158-219-0
e-ISBN: 978-2-35158-220-6
Publisher: RILEM Publications SARL
Publication year: 2018
Pages: 837-848
Total Pages: 12
Language : English


Abstract: Ultra high performance concrete is a new type of concrete based on the theory of
maximum density. It has super high compressive strength, toughness and durability. In order
to study the mechanical properties of ultra-high performance concrete (UHPC) double-limb
thin-walled piers, a large scale scale model of 1ultra-high performance concrete double limb
thin-walled piers (UC-1) and 2 reinforced concrete double limb thin-walled piers (PC-1 and
PC-2) was designed and made.Under the action of constant axial force, the quasi-static tests
of 3 piers were carried out. The failure characteristics, hysteretic curves and displacement
ductility of the pier are obtained. Finally, the numerical simulation of the quasi-static tests of
the piers was carried out by using the ABAQUS software, and the failure modes and energy
dissipation of the test and calculation results are compared. The failure modes and energy
dissipation of the test and calculation results were compared by numerical simulation. The
results show that the failure modes of the UC-1 pier and the PC pier are similar. The failure
locations are mainly pier bottom, pier top, tie beam and tie beam and the connection of two
limbs. The structure mainly presents "Bending Failure Mode". For the reinforced concrete
pier, the increase of longitudinal reinforcement ratio has remarkable effect on its ductility and
bearing capacity. Under the same axial compression ratio, the ultimate bearing capacity of the
UC-1 test pier is 91.7% of the PC test pier and the ductility factor is 3~4 times. The hysteretic
curve of the super high performance concrete pier is very full. The super high strength
concrete can greatly improve the deformation capacity of the pier.


Online publication : 2018
Publication type : full_text
Public price (Euros) : 0.00


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