scholarly journals Modeling of steel bridge pier base to footing connections under cyclic loading.

1997 ◽  
pp. 105-123 ◽  
Author(s):  
Yoshiaki Goto ◽  
Satoshi Miyashita ◽  
Hideyuki Fujiwara ◽  
Takashi Kamijo
Keyword(s):  
Cyclic Loading ◽  
Bridge Pier ◽  
Steel Bridge

Effects of correction by heating/pressing on mechanical behavior of steel bridge pier

2009 ◽  
Vol 9 (1) ◽  
pp. 77-83
Author(s):  
Mikihito Hirohata ◽  
Takuya Morimoto ◽  
You-Chul Kim
Keyword(s):  
Mechanical Behavior ◽  
Bridge Pier ◽  
Steel Bridge

scholarly journals PREDICTION OF ULTRALOW CYCLE FATIGUE DAMAGE OF THIN-WALLED STEEL BRIDGE PIERS

2021 ◽  
Keyword(s):  
Cyclic Loading ◽  
Base Metal ◽  
Structural Parameters ◽  
Damage Index ◽  
Bridge Piers ◽  
Steel Bridge ◽  
Cycle Fatigue ◽  
Damage Level ◽  
Deposited Metal ◽  
Thin Walled

Ultralow cycle fatigue (ULCF) failure was first observed on steel bridge piers in the Kobe earthquake, and the ultimate strength and ductility evaluation formulas of thin-walled steel bridge piers were established. In this study, parametric analysis of steel piers was carried out to study the influence of the structural parameters on the ULCF damage evolution. The evolution of the ULCF damage of the base metal, the deposited metal, and the heat-affected zones was studied based on two types of steel piers with hollow box and pipe sections. Then, practical formulas to predict the ULCF damage level of steel piers under cyclic loading were proposed. Finally, the proposed formulas were validated by comparisons with the experimental results. The results show that the heat-affected zone is more vulnerable to ULCF failure than the base metal and the deposited metal. Moreover, the practical formulas to predict the ULCF damage index of the steel piers under cyclic loading were proposed, and the formulas effectively predicted the ULCF crack of the steel piers.

Seismic performance of a bridge pier reinforced with titanium alloy bars

2021 ◽  
Author(s):  
Mahesh Acharya ◽  
Mustafa Mashal ◽  
Jared Cantrell
Keyword(s):  
Titanium Alloy ◽  
Cyclic Loading ◽  
Seismic Performance ◽  
Large Scale ◽  
Plastic Hinge ◽  
Bridge Pier ◽  
Bridge Piers ◽  
Structural Performance ◽  
Concrete Bridge ◽  
Hinge Zone

<p>The research in this paper focuses on the use of Titanium Alloy Bars (TiABs) in concrete bridge piers located in high seismic zones. The paper discusses a new bridge pier system that incorporates both seismic resiliency and durability concepts. A large-scale bridge pier, reinforced with TiABs and spiral, is tested under quasi-static cyclic loading protocol. The results are compared against a benchmark cast-in-place pier with normal rebars and spiral under the same loading protocol. Based on the testing results, the use of TiABs in concrete piers would reduce rebar congestion up to 50%, provide adequate ductility, and would result in reduced residual displacement following an earthquake. The pier reinforced with TiABs reached higher drift ratios compared to cast-in-place pier. Furthermore, smaller flexural cracks that are likely to appear in the plastic hinge zone during moderate earthquakes are not a major concern for structural performance and durability of bridge piers reinforced with TiABs.</p>

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