Compressive strength assessment of rectangular steel plates with a local dent or an opening

2014 ◽  
pp. 561-570 ◽  
Keyword(s):  
Compressive Strength ◽  
Steel Plates ◽  
Strength Assessment ◽  
Local Dent

Ultimate Compressive Strength Assessment of Damaged Plates

2017 ◽  
Author(s):  
Diogo do Amaral M. Amante ◽  
Ilson P. Pasqualino ◽  
Segen F. Estefen
Keyword(s):  
Compressive Strength ◽  
Residual Stresses ◽  
Ultimate Strength ◽  
Ultimate Compressive Strength ◽  
Steel Plates ◽  
Geometric Imperfections ◽  
Strength Assessment ◽  
Local Dent ◽  
Analytical Expressions ◽  
Dent Depth

This paper presents the assessment of the ultimate compressive strength of damaged steel plates with a local dent. The explicit nonlinear finite element code from ABAQUS program was employed to simulate dynamically the dent damage. Therefore, the residual stresses due to the damage were considered in subsequent numerical compression analyses. A parametric study of plates considering residual stresses, geometric imperfections and dents was accomplished. Results showed that local dent is the dominant parameter for the ultimate strength of damaged plates. For a particular dent depth, the effect of welding induced geometric imperfections and residual stresses can be disregarded from the analysis. Afterwards, analytical expressions were developed to estimate the ultimate strength of damaged plates.

PENGKAJIAN KEKUATAN BETON STRUKTUR JEMBATAN PASCA KEBAKARAN

2013 ◽  
Vol 12 (3) ◽  
Author(s):  
Sudarmadi Sudarmadi
Keyword(s):  
Compressive Strength ◽  
Concrete Strength ◽  
Ultrasonic Pulse Velocity ◽  
Ultrasonic Pulse ◽  
Pulse Velocity ◽  
Test Results ◽  
Concrete Compressive Strength ◽  
Strength Assessment ◽  
Concrete Testing

In this paper a case study about concrete strength assessment of bridge structure experiencing fire is discussed. Assessment methods include activities of visual inspection, concrete testing by Hammer Test, Ultrasonic Pulse Velocity Test, and Core Test. Then, test results are compared with the requirement of RSNI T-12-2004. Test results show that surface concrete at the location of fire deteriorates so that its quality is decreased into the category of Very Poor with ultrasonic pulse velocity ranges between 1,14 – 1,74 km/s. From test results also it can be known that concrete compressive strength of inner part of bridge pier ranges about 267 – 274 kg/cm2 and concrete compressive strength of beam and plate experiencing fire directly is about 173 kg/cm2 and 159 kg/cm2. It can be concluded that surface concrete strength at the location of fire does not meet the requirement of RSNI T-12-2004. So, repair on surface concrete of pier, beam, and plate at the location of fire is required.

Research on mechanical behavior of L-shaped multi-cell concrete-filled steel tubular stub columns under axial compression

2018 ◽  
Vol 22 (2) ◽  
pp. 427-443 ◽  
Author(s):  
Jiepeng Liu ◽  
Hua Song ◽  
Yuanlong Yang
Keyword(s):  
Finite Element ◽  
Compressive Strength ◽  
Bearing Capacity ◽  
Thickness Ratio ◽  
Steel Plates ◽  
Test Results ◽  
Finite Element Program ◽  
Element Program ◽  
Compressive Strength Of Concrete ◽  
Stub Columns

A total of 11 L-shaped multi-cell concrete-filled steel tubular stub columns were fabricated and researched in axial compression test. The key factors of width-to-thickness ratio D/ t of steel plates in column limb and prism compressive strength of concrete fck were investigated to obtain influence on failure mode, bearing capacity, and ductility of the specimens. The test results show that the constraint effect for concrete provided by multi-cell steel tube cannot be ignored. The ductility decreases with the increase of width-to-thickness ratio D/ t of steel plates in column limb. The bearing capacity increases and the ductility decreases with the increase in prism compressive strength of concrete fck. A finite element program to calculate concentric load–displacement curves of L-shaped multi-cell concrete-filled steel tubular stub columns was proposed and verified by the test results. A parametric analysis with the finite element program was carried out to study the influence of the steel ratio α, steel yield strength fy, prism compressive strength of concrete fck, and width-to-thickness ratio D/ t of steel plates in column limb on the stiffness, bearing capacity and ductility. Furthermore, the design method of bearing capacity was determined based on mainstream concrete-filled steel tubular codes.

Compressive strength assessment of a moderately corroded box girder

2011 ◽  
Vol 6 (1) ◽  
pp. 27-37 ◽  
Author(s):  
S. Saad-Eldeen ◽  
Y. Garbatov ◽  
C. Guedes Soares
Keyword(s):  
Compressive Strength ◽  
Box Girder ◽  
Strength Assessment

Ultimate Compressive Capacity of Rectangular Plates With Partial Depth Pits

2010 ◽  
Author(s):  
Xiaoli Jiang ◽  
C. Guedes Soares
Keyword(s):  
Compressive Strength ◽  
Fem Analysis ◽  
Volume Effect ◽  
Steel Plates ◽  
Rectangular Plates ◽  
Ship Hulls ◽  
Single Side ◽  
Corrosion Pits ◽  
Extent Of Damage ◽  
Heavy Damage

Pitting corrosion has been one of main corrosion type of immersed ship hulls, which can bring heavy damage and even accidents to in-service ships, particularly to aged ships. To investigate the effects of pits on the ultimate compressive strength of mild steel plates, a series of non-linear FEM analysis on plates with partial depth corrosion pits are undertaken in the paper, changing the size, intensity and location of pits and the slenderness of plates. It is shown that the eccentricity induced by single side distributed pits has considerable degrading effects on the ultimate compressive capacity of plates. Although the degree of pit corrosion (DOP) does reflect the effect of pits to a large extent, it is not enough to rely on DOP exclusively to represent the extent of damage caused by pits, as “volume effect” should be considered.

scholarly journals ABOUT THE CALCULATION OF CONCRETE ELEMENTS SUBJECTED TO LOCAL COMPRESSION

2005 ◽  
Vol 11 (3) ◽  
pp. 243-248
Author(s):  
Vytautas Venckevičius
Keyword(s):  
Compressive Strength ◽  
Cross Section ◽  
Normal Weight ◽  
Steel Plates ◽  
Theoretical Research ◽  
Engineering Structures ◽  
Normal Weight Concrete ◽  
Concentration Problem ◽  
Compressive Strength Of Concrete ◽  
Concrete Elements

The problem of calculating the local compressive strength of normal‐weight concrete elements of building and engineering structures locally loaded by rigid steel plates on a small area surrounded from all sides by a non‐loaded larger area of cross‐section is presented in this paper. The results of experimental and theoretical investigations show that this stress‐strain concentration problem is rather complicated. Therefore up to now for the determination of local compressive strength of concrete elements various calculation methods have been used. The author of this paper proposed an alternative method the algorithm of which is based on the results of statistical analysis of numerous experimental data, conclusions of adequate theoretical research and propositions of SNiP, Eurocode2 and other design codes. According to this calculation method, the design local compressive strength of concrete and concrete elements depends not only on magnitude of local load concentration but also on characteristics of mechanical properties of concrete ‐axial tensile and compressive strength and relative element height (ratio of element height with less line of its cross‐section) too. The results of comparative calculations showed that experimental research data better comply with the calculated ones by the proposed method than with the obtained ones by SNiP, SNB, STR and Eurocode2 methods.

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