Occurrence of Local Cylindrical Shell Buckling during Ultimate Strength Test of a Full-scale Transmission Tower, and Consideration Concerning Local Buckling Strength based on Reproduction Analyses

2018 ◽  
Vol 138 (7) ◽  
pp. 636-645 ◽  
Author(s):  
Hiroshi Ohta ◽  
Hideharu Nakamura ◽  
Eijiro Hongo ◽  
Shin-ichi Matsuura ◽  
Kei Hanaoka
Keyword(s):  
Cylindrical Shell ◽  
Ultimate Strength ◽  
Local Buckling ◽  
Strength Test ◽  
Full Scale ◽  
Transmission Tower ◽  
Buckling Strength ◽  
Shell Buckling ◽  
Strength Based

The Ultimate Strength of the Concrete-Filled Tubular (CFT) Section Columns

2012 ◽  
Vol 204-208 ◽  
pp. 899-902
Author(s):  
Young Bong Kwon ◽  
In Kyu Jeong ◽  
In Kyu Kwon
Keyword(s):  
Compressive Strength ◽  
Local Buckling ◽  
Strength Ratio ◽  
Design Strength ◽  
Buckling Strength ◽  
Confining Effect ◽  
Strength Based ◽  
Negative Effect ◽  
Strength Formula ◽  
Stub Columns

This paper describes design strength of concrete-filled tubular (CFT) section columns accounting for local buckling of steel skin. The local buckling has a negative effect on the ultimate compression strength based on the yield stress of steel skin and nominal compressive strength of in-filled concrete. A squash load formula for CFT stub columns is proposed to account for the post-local-buckling strength of steel skin. A compressive strength formula for filled-in concrete accounting for the confining effect of steel skin and strength ratio between filled-in concrete and steel skin is also proposed. The squash loads predicted by the proposed strength formula for the direct strength method were compared with the AISC (2010) and Eurocode4 (2004). The comparison showed that the squash load formula proposed can predict conservatively the squash load of circular and rectangular CFT columns with local buckling

Flexural Capacity of Plate Girders with Corrugated Webs Strengthened with Angles

2014 ◽  
Vol 680 ◽  
pp. 206-209
Author(s):  
Seung Hee Lho ◽  
Man Woo Park ◽  
Young K. Ju ◽  
Sang Dae Kim
Keyword(s):  
Local Buckling ◽  
Full Scale ◽  
Flexural Stiffness ◽  
Full Scale Test ◽  
Flexural Capacity ◽  
Buckling Strength ◽  
Plate Girders ◽  
Corrugated Webs ◽  
Scale Test ◽  
Conventional Plate

Plate girders with corrugated webs with angles were developed in order to promote the flange local buckling strength of conventional plate girders with corrugated webs. The width to thickness ratio of flanges can be reduced with angles. However corrugated webs cannot contribute to the flexural stiffness and strength of PGCW, corrugated webs of PGCW-A can. A full-scale test was conducted to evaluate the flexural capacity of PGCW-A. As a result, the flexural capacity of a specimen of PGCW-A increased by 163% compared to a specimen of PGCW.

Advanced Closed-Form Ultimate Strength Formulation for Ships

2001 ◽  
Vol 45 (02) ◽  
pp. 111-132 ◽  
Author(s):  
Jeom Kee Paik ◽  
Owen F. Hughes ◽  
Alaa E. Mansour
Keyword(s):  
Ultimate Strength ◽  
Structural Damage ◽  
Lateral Pressure ◽  
Local Buckling ◽  
Bending Moment ◽  
Stiffened Panels ◽  
Initial Imperfections ◽  
Ship Hulls ◽  
Collapse Column ◽  
Side Shell

The aim of this paper is to develop an advanced ultimate strength formulation for ship hulls under vertical bending moment. Since the overall failure of a ship hull is normally governed by buckling and plastic collapse of the deck, bottom, and sometimes the side shell stiffened panels, it is of crucial importance to accurately calculate the ultimate strength of stiffened panels in deck, bottom and side shell for more advanced ultimate strength analyses. In this regard, the developed formulation is designed to be more sophisticated than previous simplified theoretical methods for calculating the ultimate strength of stiffened panels under combined axial load, in-plane bending and lateral pressure. Fabrication-related initial imperfections (initial deflections and residual stresses) and potential structural damage related to corrosion, collision, or grounding are included in the panel ultimate strength calculations as parameters of influence. All possible collapse modes involved in collapse of stiffened panels, including overall buckling collapse, column or beam-column type collapse (plate or stiffener induced collapse), tripping of stiffeners and local buckling of stiffener web, are considered. As illustrative examples, the paper investigates and discusses the sensitivity of parameters such as lateral pressure, fabrication-related initial imperfections, corrosion, collision and grounding damage on the ultimate strength of a typical Cape size bulk carrier hull under vertical bending.

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