Proposal of New High Performance Steels for Bridges (Bhs500, Bhs700)

Miki, Chitoshi; Ichikawa, Atsushi; Kusunoki, Takashi; Kawabata, Fumimaru

doi:10.2208/jscej.2003.738_1

Cited by 21 publications

(4 citation statements)

References 3 publications

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“…Bridge High-performance Steel (BHS) was developed to increase bridge quality and reduce fabrication costs. It is produced through advanced thermal processing, which gives it enhanced weldability and formability as well as high yield stress [6]. Four types of steel were standardized (SBHS500, SBHS500W, SBHS700 and SBHS700W) under Japan Industrial Standards [7].…”

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confidence: 99%

Evaluation of Applicability for Ni-advanced Weathering Steels and Bridge High-performance Steels to Railway Steel Bridges

Sugimoto¹,

Kita²

2010

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Evaluation of Applicability for Ni-advanced Weathering Steels and Bridge High-performance Steels to Railway Steel Bridges

Sugimoto¹,

Kita²

2010

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“…A series of new HPSs termed BHS (bridge high performance steel) [38] have been developed to reduce the construction and maintenance costs of steel bridges. There are two steel grades, BHS500 and BHS700 (the current names are respective SBHS500 and SBHS700) [39], respectively with yield strengths no less than 500 MPa and 700 MPa.…”

Section: New Hpss For Steel Bridgesmentioning

confidence: 99%

Advancement and Applications of Japanese High Performance Steel in Structural Engineering

Xiang¹,

Ge²,

Jia³

2016

Volume 12 Number 3

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ABSTRACT:Applications of steel to building structures in Japan can date back to the first steel factory, Shueisha Printing Plant, constructed in 1894. History of steel bridges in Japan can trace back to the first steel bridge, Kurogane Bridge in Nagasaki, constructed in 1868 using wrought iron. As the developments of large-scale structures, new construction technologies and demanding structural performance, a variety of high performance steels (HPSs) have been developed. In this study, history of applications of HPSs to building and bridge structures in Japan is briefly reviewed. The characteristics of typical HPSs in both buildings and bridges are introduced, respectively, and their impacts on structural engineering are also discussed. INTRODUCTIONConstructions of large-scale and large-span structures in developed countries tend to decrease in recent decades, and structural scales of most projects are becoming smaller in countries such as Japan and America. As a rival of reinforced concrete structures, steel structures are confronting a more and more competitive situation. Partially motivated by this concern, a number of high performance steels (HPSs) have been proposed to reduce construction cost, and employed in both building and bridge structures. As progress of new design concepts, connection details, fabrication technologies and mechanics, various properties such as higher strength, ductility, weldability, toughness, weathering and fireproofing properties, are increasingly demanded in practice. For example, design concept based on whole life cycle cost (LCC) is gaining more attention in steel bridges [1], which not only considers initial construction cost, but also maintenance expenses. From the viewpoint of LCC, durability related characteristics, such as weathering and fracture-resistant properties, are becoming more important issues for structural steels.Before discussion on HPS, its definition is distinguished in different countries. In the USA, HPS is defined as having an optimized balance of strength, weldability, toughness, ductility, corrosion resistance and formability, to achieve the best overall performance of structures while remaining cost-effective [2][3][4]. A series of HPSs, HPS50W, HPS70W and HPS100W, were developed for steel bridges [3], where the aforementioned material properties are all considered through new manufacturing technologies including developments in metallurgical, rolling and heat-treatment.On the other hand, HPS in Japan commonly represents steels that have one or several virtues in strength, ductility, fire-proofing, weathering, weldability, toughness, cold formability, connecting feasibility [5,6], etc. Therefore, the definition of HPS in Japan is broader than that in the USA, and there are more steel grades for HPS in Japan. In this study, Japanese HPSs developed respectively

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“…Therefore, if the effect of the yield ratio on the after-slip mechanical behavior is elucidated, structural rationalization with HSS can be realized by controlling the failure mode of the joints and securing the same ductility as a mild steel joint. Recently, a HSS called "steels for bridge high performance structure (SBHS)" was fabricated in Japan; it has high strength and weldability by applying thermos-mechanical control processes [7,8]. Additionally, SBHS has already been specified in Japanese Industrial Standards [9] and various research has been conducted [10,11].…”

Section: Introductionmentioning

confidence: 99%

Ultimate Strength, Ductility, and Failure Mode of High-Strength Frictional Bolted Joints Made of High-Strength Steel

2023

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Further structural rationalization of steel bridges such as weight reduction of members can be realized by using high-strength steel. However, owing to the high yield-to-tensile strength ratio, failure of connected members occurs before the members in the gross area are plastic-deformed sufficiently. In this study, tensile tests of frictional bolted joints with various geometrical configurations and grades of plates and bolts were conducted to compare the failure modes of high-strength and mild steel joints and to investigate the relationship among ultimate strength, ductility, and failure mode. The results indicate that the failure modes of high-strength steel joints were the same as those of mild steel joints and can be almost classified with the respective ratios of net cross-section failure resistance and plate shear failure resistance to bolt shear failure resistance. Ultimate resistance and ductility were maximum in the case of split failure mode where these ratios were approximately 1.0; they increased as the ratios decreased. Therefore, it can be concluded that these ratios should be less than 1.0 to induce the split failure mode to enable the breaking of a high-strength steel joint after the member is plastic-deformed sufficiently.

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Proposal of New High Performance Steels for Bridges (Bhs500, Bhs700)

Cited by 21 publications

References 3 publications

Evaluation of Applicability for Ni-advanced Weathering Steels and Bridge High-performance Steels to Railway Steel Bridges

Evaluation of Applicability for Ni-advanced Weathering Steels and Bridge High-performance Steels to Railway Steel Bridges

Advancement and Applications of Japanese High Performance Steel in Structural Engineering

Ultimate Strength, Ductility, and Failure Mode of High-Strength Frictional Bolted Joints Made of High-Strength Steel

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