RESEARCH AND APPLICATION OF UHPC-BASED HIGH PERFORMANCE BRIDGE STRUCTURES IN CHINA

Author(s): Xudong Shao , Junhui Cao and Zhengyu Huang
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: 145-163
Total Pages: 19
Language : English

Abstract: In China, great achievements have been made in the field of bridge engineering. However,
some common issues are still unsolved. For steel bridges, orthotropic steel decks are
susceptible to fatigue cracking and asphalt overlays are prone to premature damage; for long-
span prestressed concrete bridges, main girders are inveitable to develop crack and excessive
deflection; while for steel-concrete composite bridges, the span length is limited by the self
weight of main girders, and concrete decks are inclined to cracking at negative moment zones.
To overcome these bottlenecks, the research team at Hunan University proposed a serial of
high performance bridge structures basing on UHPC. Four types of high performance bridge
structures were proposed: 1) steel-STC lightweight composite deck, where STC (Super
Toughness Concrete) represents a modified UHPC with enhanced tensile strength and
toughness; 2) steel-UHPC lightweight composite girder, which is suitable for long-span
composite bridges; 3) thin-wall UHPC girder bridge with closely spaced diaphragms, in
which only the longitudinal prestress is required; and 4) UHPC and steel-UHPC composite
girder bridges suitable for prefabricated construction. During the past eight years, over six
hundreds specimens have been tested. This paper highlights the expeimental research and
field applications of the high performance bridge structures.

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