Closure to “Lyse and Godfrey on Web Buckling in Steel Beams”

1935 ◽  
Vol 100 (1) ◽  
pp. 701-706
Author(s):  
Inge Lyse ◽  
H. J. Godfrey
Keyword(s):  
Steel Beams ◽  
Web Buckling

Investigation of Web Buckling In Steel Beams

1935 ◽  
Vol 100 (1) ◽  
pp. 675-695
Author(s):  
Inge Lyse ◽  
H. J. Godfrey
Keyword(s):  
Steel Beams ◽  
Web Buckling

LOCAL BUCKLING BEHAVIOR OF DOUBLE-COPED STEEL BEAMS

2014 ◽  
Vol 1 (1) ◽  
Author(s):  
Cheng Fang ◽  
Michael Yam ◽  
V. P. Iu ◽  
K. F. Chung
Keyword(s):  
Failure Modes ◽  
Pushover Analysis ◽  
Local Buckling ◽  
Design Approach ◽  
Steel Beams ◽  
Buckling Mode ◽  
Buckling Behavior ◽  
Buckling Resistance ◽  
Web Buckling ◽  
Irregular Bridges

Local web buckling is one of the most common failure modes for coped steel beams. While several studies have been undertaken focusing on the behavior of top-flange/single-coped beams, double-coped beams have received little attention. To fill this knowledge gap, this paper presents experimental and numerical studies on local web buckling behavior of double-coped steel beams. Five full-scale tests were conducted, and the main test parameters were cope length and cope depth. Local web buckling was observed as the main failure mode for all of the five specimens, and the buckling resistance was found to decrease with increasing cope length and cope depth. A FE study was subsequently conducted, where the response of the FE models agreed well with the test results, especially in terms of buckling mode and buckling resistance. The test and FE results were compared with those predicted by an existing design approach. The design results were found to be quite conservative, and hence further investigation may be required to achieve a more accurate design approach. procedure and faster computational efficiency than the Modal Pushover Analysis (MPA) procedure for irregular bridges.

Study on shear performance of the connection with external stiffening ring between square steel tubular column and unequal-depth steel beams

2020 ◽  
pp. 136943322098166
Author(s):  
Shuhao Yin ◽  
Bin Rong ◽  
Lei Wang ◽  
Yiliang Sun ◽  
Wuchen Zhang ◽  
...  
Keyword(s):  
Failure Modes ◽  
Plastic Hinge ◽  
Steel Tube ◽  
Nonlinear Finite Element ◽  
Steel Beams ◽  
Finite Element Models ◽  
Test Results ◽  
Panel Zone ◽  
Load Paths ◽  
Shear Performance

This paper studies the shear performance of the connection with the external stiffening ring between the square steel tubular column and unequal-depth steel beams. Two specimens of interior column connections were tested under low cyclic loading. The deformation characteristics and failure modes exhibited by the test phenomena can be summarized as: (1) two specimens all exhibited shear deformation in steel tube web of the panel zone and (2) weld fracture in the panel zone and plastic hinge failure at beam end were observed. Besides, load-displacement behaviors and strain distributions have been also discussed. The nonlinear finite element models were developed to verify the test results. Comparative analyses of the bearing capacity, failure mode, and load-paths between the equal-depth and unequal-depth beam models have been carried out.

Study on the Flexural Fatigue Performance of CFRP-OFBG Plate Reinforced Damaged Steel Beams

2021 ◽  
Author(s):  
Langni Deng ◽  
Mengjun Zhong ◽  
Yang Liu ◽  
Ling Liao ◽  
Shijin Lai ◽  
...  
Keyword(s):  
Fatigue Performance ◽  
Steel Beams ◽  
Flexural Fatigue

Experimental analysis on cold-formed steel beams subjected to fire

2014 ◽  
Vol 74 ◽  
pp. 104-117 ◽  
Author(s):  
Luís Laím ◽  
João Paulo C. Rodrigues ◽  
Luis Simões da Silva
Keyword(s):  
Experimental Analysis ◽  
Steel Beams ◽  
Cold Formed Steel

scholarly journals Development of Optimal Design Method for Steel Double-Beam Floor System Considering Rotational Constraints

2021 ◽  
Vol 11 (7) ◽  
pp. 3266
Author(s):  
Insub Choi ◽  
Dongwon Kim ◽  
Junhee Kim
Keyword(s):  
Optimal Design ◽  
Design Process ◽  
Design Method ◽  
Steel Beams ◽  
High Gravity ◽  
Double Beam ◽  
Iterative Analysis ◽  
Floor Systems ◽  
Optimal Design Method ◽  
Floor System

Under high gravity loads, steel double-beam floor systems need to be reinforced by beam-end concrete panels to reduce the material quantity since rotational constraints from the concrete panel can decrease the moment demand by inducing a negative moment at the ends of the beams. However, the optimal design process for the material quantity of steel beams requires a time-consuming iterative analysis for the entire floor system while especially keeping in consideration the rotational constraints in composite connections between the concrete panel and steel beams. This study aimed to develop an optimal design method with the LM (Length-Moment) index for the steel double-beam floor system to minimize material quantity without the iterative design process. The LM index is an indicator that can select a minimum cross-section of the steel beams in consideration of the flexural strength by lateral-torsional buckling. To verify the proposed design method, the material quantities between the proposed and code-based design methods were compared at various gravity loads. The proposed design method successfully optimized the material quantity of the steel double-beam floor systems without the iterative analysis by simply choosing the LM index of the steel beams that can minimize objective function while satisfying the safety-related constraint conditions. In particular, under the high gravity loads, the proposed design method was superb at providing a quantity-optimized design option. Thus, the proposed optimal design method can be an alternative for designing the steel double-beam floor system.

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