The Analysis of Steel Girder Damage Mechanism in Hyogoken-Nanbu Earthquake and Verification of Countermeasures for Seismic Safety

Yamahira, K.; Otsuka, Hisanori

doi:10.2208/jscej.2002.696_31

Cited by 1 publication

(1 citation statement)

References 4 publications

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“…Usami et al investigated Experimental study on ultimate horizontal behavior of metal bearings [19], Sato et al emphasized on effects of steel bearing performance on global seismic response of a bridge [20], which concerned on effects of pin bearing performance on bridge superstructure response during earthquake in the direction of bridge and perpendicular bridge axis. Yamahir et al presented the analysis of steel girder damage mechanism in the 1995 Southern Hyogo Prefecture Earthquake and verification of countermeasures for seismic safety [21], which performed on nonlinear seismic response analysis of two steel bridges with continuous girders and steel piers. Tamai et al presented a study on compactification of steel bearing by FE analysis [22], which investigated pot bearing compactification by using finite analysis method, Xiang et al carried out experimental and numerical study on seismic sliding mechanism of laminated-rubber bearings [23], the author investigated sliding behavior of laminated rubber bearing with typical configuration, and Konstantinidis et al Experimental investigation on the seismic response of bridge bearing [24], the author emphasized on steel-reinforced elastomeric bearing, steel-reinforced elastomeric bearing with PTEF disk, and PTEF special bearing seismic response.…”

Section: Introductionmentioning

confidence: 99%

Numerical study on failure process and ultimate state of steel bearing under combined load

Gibe

Tamai

Sonoda

2020

Heliyon

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The limit state and deformation performance of steel bearing under seismic load is one of the most critical points to consider the effective or rational design of bridge against strong ground motion. In the 2016 Kumamoto earthquake, various bridges are damaged by the earthquake. Among the components of the bridge, steel bearings are the most damaged part of the bridge, which affects the functionality of the entire bridge. Since the 1995 Southern Hyogo Prefecture Earthquake, several studies about the ultimate state of steel bearing during earthquake carried out. However, there are a few studies on analyzing the failure processes and ultimate state of steel bearing when various loads assumed at the time of the earthquake. Therefore, the study investigates the failure process and ultimate state of pin bearing and pin-roller bearing under combined load using static push-over analysis. First, the bridge axis and perpendicular bridge axis horizontal loading directions proposed depending on the actual earthquake directional behavior of the bridge. Then the analysis of each bearing conducted and clarified the failure process of each bearing that leads to failure based on the von mises stress yield criteria. Three-dimensional finite element method used to analyze the bearings. The analysis result found that set bolt and pin neck tensile failure were the probable failure mode of pin bearing, and failure mode of pin-roller bearing depends on vertical and horizontal loading direction. In the future, the result used to propose a new seismic resistance design and reinforcement method of bearings that satisfies the required performance.

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Section: Introductionmentioning

confidence: 99%