Effects of Multiple Damage-Heat Straightening Repairs on Steel Beams

2007 ◽  
Vol 2028 (1) ◽  
pp. 67-77 ◽  
Author(s):  
Keith Kowalkowski ◽  
Amit H. Varma
Keyword(s):  
Steel Beams ◽  
Heat Straightening

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.

Flexural strengthening of steel beams using pultruded CFRP composite sheets with anchorage mechanisms

Structures ◽  
2021 ◽  
Vol 33 ◽  
pp. 1414-1427
Author(s):  
Selvakumarasami Kumaraguru ◽  
Paramasivan Alagusundaramoorthy
Keyword(s):  
Steel Beams ◽  
Flexural Strengthening ◽  
Cfrp Composite

Push-out tests on bolted shear connectors in composite cold-formed steel beams

2021 ◽  
Vol 164 ◽  
pp. 107831
Author(s):  
Mahmoud Hosseinpour ◽  
Mehran Zeynalian ◽  
Abdoreza Ataei ◽  
Maryam Daei
Keyword(s):  
Steel Beams ◽  
Shear Connectors ◽  
Cold Formed Steel ◽  
Push Out

Experimental study of notched steel beams strengthened with a CFRP plate subjected to overloading fatigue and wetting/drying cycles

2019 ◽  
Vol 209 ◽  
pp. 634-643 ◽  
Author(s):  
Junhui Li ◽  
Jun Deng ◽  
Yi Wang ◽  
Jianji Guan ◽  
Hengzhong Zheng
Keyword(s):  
Experimental Study ◽  
Steel Beams ◽  
Cfrp Plate
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