scholarly journals MODELING OF SOIL LOAD-BEARING CAPACITY AS A FUNCTION OF SOIL MECHANICAL RESISTANCE TO PENETRATION

2015 ◽  
Vol 39 (4) ◽  
pp. 1036-1047 ◽  
Author(s):  
Cícero Ortigara ◽  
Moacir Tuzzin de Moraes ◽  
Henrique Debiasi ◽  
Vanderlei Rodrigues da Silva ◽  
Julio Cezar Franchini ◽  
...  
Keyword(s):  
Bearing Capacity ◽  
Agricultural Soils ◽  
Total Porosity ◽  
Soil Bulk Density ◽  
Mechanical Resistance ◽  
Load Bearing Capacity ◽  
Load Bearing ◽  
Preconsolidation Pressure ◽  
Soil Load ◽  
Resistance To Penetration

Estimation of soil load-bearing capacity from mathematical models that relate preconsolidation pressure (σp) to mechanical resistance to penetration (PR) and gravimetric soil water content (U) is important for defining strategies to prevent compaction of agricultural soils. Our objective was therefore to model the σp and compression index (CI) according to the PR (with an impact penetrometer in the field and a static penetrometer inserted at a constant rate in the laboratory) and U in a Rhodic Eutrudox. The experiment consisted of six treatments: no-tillage system (NT); NT with chiseling; and NT with additional compaction by combine traffic (passing 4, 8, 10, and 20 times). Soil bulk density, total porosity, PR (in field and laboratory measurements), U, σp, and CI values were determined in the 5.5-10.5 cm and 13.5-18.5 cm layers. Preconsolidation pressure (σp) and CI were modeled according to PR in different U. The σp increased and the CI decreased linearly with increases in the PR values. The correlations between σp and PR and PR and CI are influenced by U. From these correlations, the soil load-bearing capacity and compaction susceptibility can be estimated by PR readings evaluated in different U.

scholarly journals Soil Load-Bearing Capacity and Development of Root System in Area Under Sugarcane with Traffic Control in Brazil

Sugar Tech ◽  
2018 ◽  
Vol 21 (1) ◽  
pp. 153-161 ◽  
Author(s):  
Allan Charlles Mendes de Sousa ◽  
Camila Viana Vieira Farhate ◽  
Zigomar Menezes de Souza ◽  
José Luiz Rodrigues Torres ◽  
Reginaldo Barboza da Silva
Keyword(s):  
Bearing Capacity ◽  
Root System ◽  
Traffic Control ◽  
Load Bearing Capacity ◽  
Load Bearing ◽  
Soil Load

Assessment of the Load-Bearing Capacity of Bark-Included Junctions in Crataegus monogyna Jacq. in the Presence and Absence of Natural Braces

2020 ◽  
Vol 46 (3) ◽  
pp. 210-227
Author(s):  
Dean Meadows ◽  
Duncan Slater
Keyword(s):  
Bearing Capacity ◽  
Mechanical Performance ◽  
Mechanical Resistance ◽  
Single Specimen ◽  
Load Bearing Capacity ◽  
Load Bearing ◽  
Crataegus Monogyna ◽  
Naturally Occurring ◽  
Mode Of Failure ◽  
Control Branch

Bark-included junctions are frequently encountered defects within the aerial structures of trees. The presence of included bark within a branch junction can substantially reduce the junction’s factor of safety. Recent research has found naturally occurring bracing to be a primary cause of the formation of included bark within branch junctions. This study tested the load-bearing capacity of branch junctions in hawthorn (Crataegus monogyna Jacq.) using rupture tests and compared the mechanical performance of “control” branch junctions, bark-included junctions with the natural bracing retained, and bark-included junctions where we had intentionally removed their natural braces by cutting them out. Substantial variability was observed in the failure kinematics of bark-included branch junctions when their natural braces were retained. The type of natural brace present affected the mode of failure of the branch junctions when pulled apart. A single specimen with fused branches presented the strongest form of natural brace in this study, followed by entwining branches, whereas crossing branches were found to provide the least mechanical resistance. This study provides initial evidence that the type of associated natural brace is an important consideration when an arborist is trying to assess the likely mechanical performance of a bark-included junction within a tree and its likelihood of failure.

Mechanical Resistance of Triple Glass Facade Panels

2013 ◽  
Vol 486 ◽  
pp. 84-89
Author(s):  
Petr Bouška ◽  
Radomír Pukl ◽  
Miroslav Špaček ◽  
Miroslav Vokáč ◽  
Tomáš Bittner
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Bearing Capacity ◽  
Experimental Investigations ◽  
Mechanical Resistance ◽  
Load Bearing Capacity ◽  
Element Analysis ◽  
Load Bearing ◽  
Glazed Facade ◽  
Loading Tests

Loading tests of triple glazed facade panels with dimensions of 1.5 x 2.64 m were carried out. The purpose of the tests was to examine mechanical resistance of the glass panes, namely the deformations caused by a local load, to determine degree of interaction between the panes of triple glazing exposed to the loading action and to prove the load bearing capacity of the panels. This experimental investigations were accompanied by finite element analysis.

Increased load bearing capacity of mechanically joined FRP/metal joints using a pin structured auxiliary joining element

2020 ◽  
Vol 62 (1) ◽  
pp. 55-60
Author(s):  
Per Heyser ◽  
Vadim Sartisson ◽  
Gerson Meschut ◽  
Marcel Droß ◽  
Klaus Dröder
Keyword(s):  
Bearing Capacity ◽  
Load Bearing Capacity ◽  
Load Bearing

Load-Bearing Capacity of Direct Inlay-Retained Fibre-reinforced Composite Fixed Partial Dentures with Different Cross-Sectional Pontic Design

2017 ◽  
Vol 68 (1) ◽  
pp. 94-100
Author(s):  
Oana Tanculescu ◽  
Adrian Doloca ◽  
Raluca Maria Vieriu ◽  
Florentina Mocanu ◽  
Gabriela Ifteni ◽  
...  
Keyword(s):  
Bearing Capacity ◽  
Fracture Pattern ◽  
Load Bearing Capacity ◽  
Cross Sectional ◽  
Load Bearing ◽  
Reinforced Composite ◽  
Polyethylene Fibre

The load-bearing capacity and fracture pattern of direct inlay-retained FRC FDPs with two different cross-sectional designs of the ponticwere tested. The aim of the study was to evaluate a new fibre disposition. Two types of composites, Filtek Bulk Fill Posterior Restorative and Filtek Z250 (3M/ESPE, St. Paul, MN, USA), and one braided polyethylene fibre, Construct (Kerr, USA) were used. The results of the study suggested that the new tested disposition of the fibres prevented in some extend the delamination of the composite on buccal and facial sides of the pontic and increased the load-bearing capacity of the bridges.

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