Evaluation of Panel Zone Shear Strength in Cruciform Columns, Box-Columns and Double- Web Columns

In recent years, a new type of frame consisting of steel beam and concrete-filled square steel tubular special-shaped column is increasingly widespread. Compared with the joint of ordinary reinforced concrete special shaped frame, the joint between concrete-filled square steel tubular special-shaped columns and steel beams has the advantage of better ductility, higher loading capacity, uncomplicated reinforcement disposing and convenience in construction. This paper indicates that the joint has strong energy dissipation capacity and high loading capacity, and the use of diaphragm is effective to enhance the structural performance of the joints. Stress transferring mechanism in the joints is discussed, and the calculating model of the shear strength of panel zone is established. This study is helpful for further study of the design and use of the joint between concrete-filled square steel tubular special-shaped columns and steel beams.

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Rigid Joints Transferring Forces outside Box Columns with Imperfect Beams – Finite Element Method Simulation

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.578-579.131 ◽

2014 ◽

Vol 578-579 ◽

pp. 131-136

Author(s):

Guang Xian Liang ◽

Zhong Gen Xu ◽

Wei Ming Chen ◽

Chang Gen Deng

Keyword(s):

Finite Element Method ◽

Finite Element ◽

Steel Structure ◽

Finite Element Method Simulation ◽

Panel Zone ◽

Practical Engineering ◽

Rigid Joints ◽

Ultimate Carrying Capacity ◽

Box Columns ◽

Element Method

In the process of steel structure construction, it was inevitable that the members of structure had initial imperfections which might decrease capacity of the structure. In order to consider the influence of lateral deviation of beams on rigid joints transferring forces outside box columns, in this paper 4 specimens were designed to compare the performance of joints with force-transforming plates to traditional joints by finite element method program ANSYS. The results indicated that adding force-transforming plates could transmit stresses to beams which were far from the panel zone, to avoid joints’ stress concentration. Moreover, in the same case, when the beams were imperfect, the yielding capacity and ultimate carrying capacity of the joints with force-transforming plates were significant higher than those of traditional joints. Moreover, the adding force-transforming plates were helpful to reduce the influence from the beams imperfect. This kind of joints can be used to the practical engineering.

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Comparative study of design procedures for CFST-to-steel girder panel zone shear strength

Journal of Constructional Steel Research ◽

10.1016/j.jcsr.2013.11.010 ◽

2014 ◽

Vol 94 ◽

pp. 114-121 ◽

Cited By ~ 4

Author(s):

Xiao-Gang Liu ◽

Mu-Xuan Tao ◽

Jian-Sheng Fan ◽

Jerome F. Hajjar

Keyword(s):

Shear Strength ◽

Comparative Study ◽

Steel Girder ◽

Design Procedures ◽

Panel Zone

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Analysis of Seismic Checking of Panel Zone with Unequal Beam Height in Steel Structures

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.204-208.2837 ◽

2012 ◽

Vol 204-208 ◽

pp. 2837-2840

Author(s):

Su Juan Dai ◽

Hui Yuan Shi ◽

Xiu Ting Wei

Keyword(s):

Shear Strength ◽

Seismic Design ◽

Steel Structure ◽

Steel Structures ◽

Calculation Formula ◽

Design Code ◽

Panel Zone ◽

Seismic Design Code ◽

Current Design ◽

Beam Height

Seismic checking of panel zone for steel frame is very important in seismic checking of steel structure. This paper starts with the comprehension of new seismic design code of 2010, and the calculation formula of shear strength and yield bearing capacity for the panel zone is derived when the beam height in two side of joint is unequal, resorting to current Design Code for the Steel Structures and Seismic Design Code for Buildings. The formula is utilized for an engineering example in this paper, and it can provide some references for the design of steel structure.

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Holding Power of Orthopaedic Screws in Metacarpal and Metatarsal Bones of Young Calves

Veterinary and Comparative Orthopaedics and Traumatology ◽

10.1055/s-0038-1633077 ◽

1992 ◽

Vol 05 (03) ◽

pp. 100-103 ◽

Cited By ~ 4

Author(s):

G. Jean ◽

J. K. Roush ◽

R. M. DeBowes ◽

E. M. Gaughan ◽

J. Kirpensteijn

Keyword(s):

Shear Strength ◽

Tensile Load ◽

Young Female ◽

Limiting Factor ◽

Holding Power ◽

Metatarsal Bones ◽

Bone Width ◽

Load To Failure ◽

Holstein Calves

SummaryThe holding power and holding power per mm bone width of 4.5 mm and 5.5 mm cortical and 6.5 mm cancellous orthopaedic screws were obtained by tensile load-to-failure studies in excised metacarpal and metatarsal bones of young female Holstein calves. Holding power and holding power per mm bone width of 6.5 mm orthopaedic screws were significantly greater than those of 4.5 and 5.5 mm orthopaedic screws in the diaphysis and metaphysis. Significant differences were not detected between holding power and holding power per mm bone width of 4.5 and 5.5 mm orthopaedic screws. The holding power was not different between metacarpi and metatarsi. The limiting factor in all tests of holding power was the shear strength of the bone. We found that 6.5 mm orthopaedic screws have the greatest holding power in the metacarpal and metatarsal bones of young calves.This study compares the holding power of 4.5 mm and 5.5 mm cortical and 6.5 mm cancellous orthopaedic screws in excised metacarpal and metatarsal bones from young female Holstein calves. We found that 6.5 mm orthopaedic screws have the greatest holding power.

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The Fully Softened Shear Strength of Lake Agassiz Clays

Geo-Congress 2020 ◽

10.1061/9780784482797.018 ◽

2020 ◽

Author(s):

Iván A. Contreras ◽

Jed D. Greenwood ◽

Aaron T. Grosser

Keyword(s):

Shear Strength ◽

Lake Agassiz ◽

Fully Softened Shear Strength

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Influence of anatomy on the adhesion performance of four wood species

Research Society and Development ◽

10.33448/rsd-v9i4.2727 ◽

2020 ◽

Vol 9 (4) ◽

pp. e31942727

Author(s):

João Gabriel Missia da Silva ◽

Pedro Nicó de Medeiros ◽

Denise Ransolin Soranso ◽

Vinicius Peixoto Tinti ◽

José Tarcísio da Silva Oliveira ◽

...

Keyword(s):

Shear Strength ◽

Specific Gravity ◽

Wood Species ◽

Tectona Grandis ◽

Glue Line ◽

Anatomical Characteristics ◽

Ray Cells ◽

Adhesion Performance ◽

Adhesion Process

The aim of this study was to evaluate the influence of anatomical characteristics on the adhesion performance of Vatairea sp., Paulownia sp., Aspidosperma populifolium and Tectona grandis wood. Specimens for anatomical, physical and mechanical analyzes were produced from tangentially oriented boards. The treatments were joint glued from pieces of the same anatomical orientation (radial and tangential), evaluated for shear strength and glue line failure. The Vatairea sp wood had the highest specific gravity (0.74 g cm-3) and the Paulownia sp (0.34 g cm-3) wood was smaller. Aspidosperma populifolium species showed the highest shear strength in the glue line in the tangential and radial faces. The anatomical variables with higher influence on the wood adhesion process were pith ray cells and especially fibers that exhibit the greatest correlation with the shear strength of the glue line.

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