The influence of stirrup-confined action on the size effect of high-strength RC columns under small eccentric compression

2017 ◽  
Vol 47 (4) ◽  
pp. 437-447
Author(s):  
Liu JIN ◽  
ZiXing DING ◽  
Dong LI ◽  
XiuLi DU
Keyword(s):  
Size Effect ◽  
High Strength ◽  
Rc Columns ◽  
Eccentric Compression

Size effect tests of high-strength RC columns under eccentric loading

2016 ◽  
Vol 126 ◽  
pp. 78-91 ◽  
Author(s):  
Chengshun Xu ◽  
Liu Jin ◽  
Zixing Ding ◽  
Dong Li ◽  
Xiuli Du
Keyword(s):  
Size Effect ◽  
High Strength ◽  
Rc Columns

Eccentric compression tests and design of welded steel tube strengthened RC stub columns with high-strength grout

2021 ◽  
Vol 35 ◽  
pp. 102072
Author(s):  
Benhao Gao ◽  
Jingfeng Wang ◽  
Qihan Shen ◽  
Chenggang Wang ◽  
Zhonghua Yu
Keyword(s):  
High Strength ◽  
Steel Tube ◽  
Compression Tests ◽  
Welded Steel ◽  
Eccentric Compression ◽  
Stub Columns

Preloaded RC columns strengthened with high-strength concrete jackets under uniaxial compression

2007 ◽  
Vol 41 (7) ◽  
pp. 1251-1262 ◽  
Author(s):  
Adilson Roberto Takeuti ◽  
Joao Bento de Hanai ◽  
Amir Mirmiran
Keyword(s):  
Uniaxial Compression ◽  
High Strength Concrete ◽  
High Strength ◽  
Rc Columns ◽  
Strength Concrete

scholarly journals Size Effect on the Strength and Deformation Behavior of Glassy Carbon Nanopillars

MRS Advances ◽  
2019 ◽  
Vol 4 (2) ◽  
pp. 133-138 ◽  
Author(s):  
Almut Albiez ◽  
Ruth Schwaiger
Keyword(s):  
Size Effect ◽  
Glassy Carbon ◽  
Deformation Behavior ◽  
High Strength ◽  
Compression Tests ◽  
Failure Initiation ◽  
Initial Polymer ◽  
Constituent Material ◽  
Strength And Deformation ◽  
Very High

ABSTRACTGlassy carbon nanolattices can exhibit very high strength-to-weight ratios as a consequence of their small size and the material properties of the constituent material. Such nanolattices can be fabricated by pyrolysis of polymeric microlattices. To further elucidate the influence of the mechanical size effect of the constituent material, compression tests of glassy carbon nanopillars with varying sizes were performed. Depending on the specific initial polymer material and the nanopillar size, varying mechanical properties were observed. Small nanopillars exhibited elastic-plastic deformation before failure initiation. Moreover, for smaller nanopillars higher strength values were observed than for larger ones, which might be related to smaller defects and a lower defect concentration in the material.

scholarly journals Size Effect on the Seismic Performance of High-Strength Reinforced Concrete Columns with Different Shear Span-to-Depth Ratios

2018 ◽  
Vol 2018 ◽  
pp. 1-19
Author(s):  
Chunyi Yu ◽  
Hua Ma ◽  
Yongping Xie ◽  
Zhenbao Li ◽  
Zhenyun Tang
Keyword(s):  
Reinforced Concrete ◽  
Size Effect ◽  
Seismic Performance ◽  
Factor Of Safety ◽  
Shear Failure ◽  
High Strength ◽  
Concrete Columns ◽  
Reinforced Concrete Columns ◽  
Local Factor ◽  
Shear Span

The size effect on the seismic performance of conventional reinforced concrete columns has been observed in terms of flexural failure and shear failure. Under earthquake loading, slender columns experience flexural failure, and short columns experience flexure-shear failure and shear failure. However, the effect of section size on the seismic performance of high-strength reinforced concrete columns under the conditions of different shear span-to-depth ratios requires further confirmation. For this purpose, six high-strength reinforced concrete columns with shear span-to-depth ratios of 2 and 4 were subjected to cyclic loading in this study. The experimental results indicated that relative nominal flexural strength, energy dissipation coefficient, factor of safety, and local factor of safety all exhibited a strong size effect by decreasing with increasing column size. Furthermore, the size effect became stronger as the shear span-to-depth ratio was increased, except for average energy dissipation coefficient. The observed changes in the factor of safety were in good agreement with the Type 2 size effect model proposed by Bažant. Thus, based on the local factor of safety and Bažant’s Type 2 model, the code equation for moment capacity of different shear span-to-depth ratios was modified to provide a consistent factor of safety regardless of column size.

Loading Process Simulation of GFRP Tube Filled with Steel-Reinforced High-Strength Concrete Columns Subjected to Eccentric Compression

2011 ◽  
Vol 71-78 ◽  
pp. 4203-4206
Author(s):  
Le Zhou ◽  
Hong Tao Liu
Keyword(s):  
High Strength Concrete ◽  
Slenderness Ratio ◽  
Concrete Strength ◽  
High Strength ◽  
Concrete Columns ◽  
Composite Columns ◽  
Strength Concrete ◽  
Finite Strip Method ◽  
Eccentric Compression ◽  
High Strength Concrete Columns

For the further study of bearing compressive capacity of GFRP tube filled with SHC（steel-reinforced high-strength concrete）columns subjected to eccentric compression, and analysis its whole bearing compressive process under eccentric compression. Based on the flat section assumption finite strip method, the calculating program of bearing eccentric compressive capacity of GFRP tube filled with SHC columns is proposed according to existing retrofit theory and related technical procedures. The relation curves of load-deformation is gotten using this calculating program, at the same time it can get the effect curves of concrete strength, slenderness ratio, eccentricity and containing bone rate to load-deformation. Calculations show that the ultimate bearing compressive capacity of composite column decreases with the increase of slenderness ratio, and elastic stage of component curve gradually shortens and stiffness gradually loses; The ultimate bearing compressive capacity of composite columns decreases with the increase of eccentricity; component ductility improves; the ultimate bearing compressive capacity of composite columns increases with the increase of concrete strength. The calculated results agree well with the experimental results and this study provides a basis for practical design.

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