Evaluation on Applicability of Built-up Square Tubular Compression Members Fabricated with HSA800 High Performance Steel Considering Local Buckling

유정한,; 김주우,; 양재근,; 강주원,; 이동우,

doi:10.7781/kjoss.2013.25.3.223

Cited by 7 publications

(1 citation statement)

References 6 publications

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“…If a high-strength structural steel is applied, the load can be supported even with a relatively small cross section that is inversely proportional to the strength of structural steel, leading to better constructability and maximization of space utilization [34]. It was applied to heavily loaded or long span buildings, such as Lotte World Tower and Kwanjeong Library of Seoul Nation University in Korea [35]. The high-performance structural steel of HSA800 has advantages from the structural aspect, including compactification of structural members, minimization of member sizes and self-load reduction of buildings [36].…”

Section: Redesign Of the Existing Pc To Cpc Girdermentioning

confidence: 99%

Embodied CO2 Reduction Effects of Composite Precast Concrete Frame for Heavily Loaded Long-Span Logistics Buildings

et al. 2021

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For heavily loaded long-span (HLS) logistics buildings, embodied CO2 (ECO2) of a structural frame accounts for more than 80% of the CO2 emissions of the entire building. To realize a sustainable structure from the CO2 perspective, an innovative construction method that reduces ECO2 of a structural frame is required. Through studies conducted over several years, we have developed a SMART (Sustainable, Measurable, Attainable, Reliable, and Timely) frame that is a steel connected composite precast concrete (CPC) frame that significantly reduces not only construction time and cost but also ECO2. If a SMART frame is applied to HLS logistics buildings, ECO2 reduction effects are expected to be substantial. To prove this, this study aims to analyze ECO2 reduction effects of the CPC frame for HLS logistics buildings. An HLS logistics building constructed with the existing precast concrete (PC) frame was selected as a case project. Thereafter, the typical PC girder was redesigned using the SMART frame; then, analysis was conducted on the quantity take-off of resources, such as form, rebar, steel, and concrete, as well as on ECO2 and production cost. As a result of the analysis, in the case of a single typical girder of the SMART frame, 730 kg-ECO2, which accounts for 9.52% of the CO2 emissions, was reduced compared to that of the existing PC frame. If only the typical girders of the case project are applied, a relatively larger quantity of 465 ton-ECO2 will be reduced. The results of this study will contribute in securing structural stability, as well as achieving a sustainable structure that leads to an unprecedented reduction of ECO2.

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Section: Redesign Of the Existing Pc To Cpc Girdermentioning

confidence: 99%

Embodied CO2 Reduction Effects of Composite Precast Concrete Frame for Heavily Loaded Long-Span Logistics Buildings

et al. 2021

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A comparative study on stub columns with various steel grades subjected to concentric axial loading

Lee

et al. 2015

Int J Steel Struct

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Alternative Design of Mega Structural Members of a Super-tall Building using 800MPa Grade High-performance Steel Plate

Cho¹,

Kim²,

Kim³

et al. 2014

Journal of Korean Society of Steel Construction

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HSA800 is a new high strength steel (HSS) plate for building structures developed by POSCO and RIST in 2011. It has upper and lower bounds for yield (Fy) and tensile (Fu) strength as of 650-770MPa and 800-950MPa, respectively, with yield ratio (Fy/Fu) limit as of 0.85 which make steel quality more reliable and enhance the seismic resistance of structures. As made by TMCP, it has a good weldability without increasing carbon percentage. The objective of this study is to provide alternative design of mega-structural members of the Lotte World Tower (555m, 123 story), a first super-tall building in Korea, using HSS considering structural safety, constructability, and cost-effectiveness. Steel outrigger trusses, belt-trusses and steel exterior columns were selected and analyzed to evaluate the structural performance between original and alternative designs using HSS. The results show that HSS can be applied to the members which do not affect lateral stiffness of a building and, in this study, approximately 1100tons of steel were saved. It implies that HSS can save overall construction costsmanufacturing, delivery, and erection costsby reducing mega structural member size. HSA800 was very first applied to the Lotte World Tower based on the results of this study.

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Evaluation on Applicability of Built-up Square Tubular Compression Members Fabricated with HSA800 High Performance Steel Considering Local Buckling

Cited by 7 publications

References 6 publications

Embodied CO2 Reduction Effects of Composite Precast Concrete Frame for Heavily Loaded Long-Span Logistics Buildings

Embodied CO2 Reduction Effects of Composite Precast Concrete Frame for Heavily Loaded Long-Span Logistics Buildings

A comparative study on stub columns with various steel grades subjected to concentric axial loading

Alternative Design of Mega Structural Members of a Super-tall Building using 800MPa Grade High-performance Steel Plate

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