scholarly journals BEARING CAPACITY OF MODEL FOUNDATIONS ON SANDY GROUNDS

2019 ◽  
Vol 7 (1) ◽  
pp. 14-19
Author(s):  
Сергей Евтушенко ◽  
Sergey Evtushenko ◽  
Геннадий Скибин ◽  
Gennadiy Skibin ◽  
Светлана Чутченко ◽  
...  
Keyword(s):  
Bearing Capacity ◽  
Soil Mechanics ◽  
Experimental Studies ◽  
Polytechnic Institute ◽  
Scientific School ◽  
Sand Base

The article continues the review of experimental studies conducted by the scientific school of soil mechanics of Novocherkassk Polytechnic Institute from 1962 to the present time. Studies of the bearing capacity of the sand base were carried out on various models of line, round, stand-alone and under the grid columns (plate).

STUDY OF THE BEARING CAPACITY OF MODEL FOUNDATIONS ON SANDY GROUNDS

2018 ◽  
Vol 6 (3) ◽  
pp. 22-28 ◽  
Author(s):  
Сергей Евтушенко ◽  
Sergey Evtushenko
Keyword(s):  
Bearing Capacity ◽  
Axisymmetric Problem ◽  
Soil Mechanics ◽  
Experimental Studies ◽  
Polytechnic Institute ◽  
Scientific School

The article provides an overview of experimental studies conducted by the scientific school of soil mechanics of the Novocherkassk Polytechnic Institute from 1962 to the present. The article gives information about the studies of the bearing capacity of the sandy base were carried out on models of band (flat problem), round (axisymmetric problem), columnar under a separate and under the grid columns.

Experimental Studies on Axially Loaded Concrete Columns Confined by Different Materials

2008 ◽  
Vol 400-402 ◽  
pp. 513-518 ◽  
Author(s):  
Yong Chang Guo ◽  
Pei Yan Huang ◽  
Yang Yang ◽  
Li Juan Li
Keyword(s):  
Bearing Capacity ◽  
Glass Fiber ◽  
Failure Modes ◽  
Experimental Studies ◽  
Concrete Columns ◽  
Steel Tube ◽  
Ultimate Bearing Capacity ◽  
Advantages And Disadvantages ◽  
Axially Loaded ◽  
Normal Strength

The improvement of the load carrying capacity of concrete columns under a triaxial compressive stress results from the strain restriction. Under a triaxial stress state, the capacity of the deformation of concrete is greatly decreased with the increase of the side compression. Therefore, confining the deformation in the lateral orientation is an effective way to improve the strength and ductility of concrete columns. This paper carried out an experimental investigation on axially loaded normal strength concrete columns confined by 10 different types of materials, including steel tube, glass fiber confined steel tube (GFRP), PVC tube, carbon fiber confined PVC tube (CFRP), glass fiber confined PVC tube (GFRP), CFRP, GFRP, polyethylene (PE), PE hybrid CFRP and PE hybrid GFRP. The deformation, macroscopical deformation characters, failure mechanism and failure modes are studied in this paper. The ultimate bearing capacity of these 10 types of confined concrete columns and the influences of the confining materials on the ultimate bearing capacity are obtained. The advantages and disadvantages of these 10 types of confining methods are compared.

scholarly journals THE HISTORY OF THE DEVELOPMENT OF EXPERIMENTAL AND THEORETICAL RESEARCH IN NOVOCHERKASSK SCHOOL OF SOIL MECHANICS AND FOUNDATION ENGINEERING

2014 ◽  
Vol 2 (3) ◽  
pp. 0-0
Author(s):  
Геннадий Скибин ◽  
Gennadiy Skibin ◽  
Владимир Дыба ◽  
Vladimir Dyba ◽  
Юрий Галашев ◽  
...  
Keyword(s):  
Soil Mechanics ◽  
Theoretical Research ◽  
Scientific School ◽  
Foundation Engineering ◽  
History Of

The article discusses the results of trough experimental studies Novocherkassk scientific school of soil mechanics and foundation engineering.

scholarly journals DETERMINATION OF DEFORMATION IN MESH COMPOSITE STRUCTURE UNDER THE ACTION OF COMPRESSIVE LOADS

2020 ◽  
Vol 17 (35) ◽  
pp. 599-608 ◽  
Author(s):  
Alexander A. OREKHOV ◽  
Yuri A. UTKIN ◽  
Polina F. PRONINA
Keyword(s):  
Composite Material ◽  
Carbon Fiber ◽  
Bearing Capacity ◽  
Polymer Composite ◽  
Experimental Studies ◽  
Polymer Composite Material ◽  
Lightweight Mesh ◽  
Carbon Filler ◽  
Selection Of

One of the significant innovative technologies is the creation of large-sized structures that work for a long time in space and meet stringent restrictions on overall mass characteristics. Among these structures, in the first place, is the section of bearing truss (BT). This article presents the results of experimental studies of sectors of load-bearing trusses of mesh design for compression. Recently, composite mesh cylindrical shells are used as spacecraft housings. The mesh shell is a supporting structure to which the instruments and mechanisms of the spacecraft are attached. The truss section is made of cross-linked polymer composite material with carbon fibers. The objective of the tests is to confirm the possibility of creating a lightweight mesh construction using a carbon fiber reinforced polymer composite material. To achieve this goal, the authors were assigned the following tasks: selection of carbon filler of polymer composite materials (PCM); selection of PCM binder; determination of the degree of carbon fiber reinforcement; choice of the number and orientation paths of spiral ribs, number of ring ribs and the sizes of individual ribs. As a result of the research, the calculated indicators for ensuring the bearing capacity and stiffness under the application of axial compressive load were obtained. At the same time, with the determination of bearing capacity, the deformation characteristics of the structure were twice determined in order to confirm their repeatability, as well as linear nature of the dependence of axial and radial deformations as a result of the applied load.

Model Tests of Foundation Bearing Capacity of Sandy Soil and Pile Foundation Bearing Capacity

2014 ◽  
Vol 580-583 ◽  
pp. 113-117
Author(s):  
Shi Jie Lu ◽  
Hua Dong Chen ◽  
Wei Chen ◽  
Tong Xiang ◽  
Xie Feng Hong
Keyword(s):  
Bearing Capacity ◽  
Sandy Soil ◽  
Pile Foundation ◽  
Soil Mechanics ◽  
Model Tests ◽  
Foundation Engineering ◽  
Foundation Settlement ◽  
Load Bearing ◽  
Model Device ◽  
Weight Loading

Using self―made model device, researchers studied the characteristics of foundation settlement of sandy soil and pile foundation load―bearing in sandy soil. Through weight loading, researchers analyzed the phenomenon of foundation settlement. Then, researchers embedded friction piles in sand, so as to analyzed pile foundation bearing capacity. The methods and results of the research can provide guidance for teaching of Soil mechanics and foundation engineering.

scholarly journals Effectiveness of Geogrids on Rutting and Bearing Capacity of Sub-base Course

2015 ◽  
Vol 15 (1) ◽  
pp. 77-80
Author(s):  
Ali Reza Mardookhpour
Keyword(s):  
Bearing Capacity ◽  
Soil Mechanics ◽  
Research Work ◽  
Polymer Materials ◽  
Load Carrying Capacity ◽  
Highway Projects ◽  
Load Carrying ◽  
Two Factors ◽  
Base Course ◽  
Increasing Load

Geogrids are being used in transportation application often in embankment construction due to their ease of construction and economy compared to traditional methods. Utilizing polymer materials in order to improve the performance of road structure is based on two factors, decreasing deformation and increasing bearing capacity. In this study geogrids were tested to check the ability of increasing load carrying capacity for highway projects. The purpose of this research work was to find a relation between the loading of the geogrid, the thickness of the aggregate layer and its bearing capacity. This would normally lead to an investigation on the lateral restrain behavior of a geogrid. According to the results obtained from soil mechanics laboratory, it could be demonstrated that by utilizing geogrids , the probability of occurring rutting decreases 30% and the bearing capacity of soil increase 40 % respectively.DOI: http://dx.doi.org/10.3126/njst.v15i1.12020  Nepal Journal of Science and TechnologyVol. 15, No.1 (2014) 77-80

Effect of the Slope on the Undrained Bearing Capacity of Shallow Foundation

2017 ◽  
Vol 28 ◽  
pp. 32-44 ◽  
Author(s):  
Messaoud Baazouzi ◽  
Mekki Mellas ◽  
Abdelhak Mabrouki ◽  
Djamel Benmeddour
Keyword(s):  
Numerical Analysis ◽  
Bearing Capacity ◽  
Experimental Studies ◽  
Strip Footing ◽  
Shallow Foundation ◽  
Mechanical Parameters ◽  
Vertical Load ◽  
Lagrangian Analysis ◽  
Major Interest ◽  
Explicit Finite Difference

The bearing capacity of shallow foundation near slope has always been one of the subjects of major interest in geotechnical engineering for researchers and practical engineers. This study focuses on the numerical analysis of the undrained bearing capacity for a strip footing near a slope, and subjected to a centered vertical load, using the explicit finite difference code FLAC (Fast Lagrangian Analysis of Continua). Theoretical and experimental studies confirm that, when a strip footing is near a slope, the bearing capacity must be assessed using reduction coefficients. In this study, several geometrical and mechanical parameters have been considered in order to evaluate the effect of the slope on the undrained bearing capacity. The numerical values have been compared with those available in the literature. The results show the influence on the undrained bearing capacity of the location of the footing with respect to the slope.

Experimental Studies on Transfer Beam Supported Frame Equipped with Fiber Reinforced Plastics Bars

2013 ◽  
Vol 717 ◽  
pp. 277-282
Author(s):  
Jin Chen ◽  
Shi Yong Jiang ◽  
Zhi Kun Lin ◽  
Ying Tao Li ◽  
Xiang Rong Zeng ◽  
...  
Keyword(s):  
Bearing Capacity ◽  
Seismic Performance ◽  
Experimental Studies ◽  
Failure Pattern ◽  
Hysteresis Curve ◽  
Fiber Reinforced ◽  
Static Test ◽  
Reinforced Plastics ◽  
Fracture Development ◽  
Fiber Reinforced Plastics

Through pseudo static test on three pieces of fiber reinforced plastics (FRP) transfer beam supported frame with three different reinforcement form, reinforcement ratio and the number of root reinforcement ,which are subjected to the vertical load and horizontal low cycle reciprocating load, the specimen fracture development law, yield mechanism, failure pattern, and bearing capacity, ductility, hysteresis characteristics and seismic performance are analyzed. The test results show that: yield mechanism and failure pattern of transfer beam supported frame equipped with fiber reinforced plastics reinforced bars are reasonable. The bearing capacity and deformation performance of transfer beam supported frame with top and bottom longitudinal bar replaced by FRP bars and symmetrical reinforced box are better than that of single upper replacement for FRP and lower replacement for FRP. The ductility performance of transfer beam supported frame equipped with fiber reinforced plastics bars is good, hysteresis curve is full, and have good seismic performance.

scholarly journals FLEXURAL REINFORCED CONCRETE ELEMENTS NORMAL SECTION BEARING CAPACITY EVALUATION IN FRACTURE STAGE

2017 ◽  
Vol 9 (2) ◽  
pp. 70-78 ◽  
Author(s):  
Justas SLAITAS ◽  
Zbynek HLAVAC ◽  
Arnoldas ŠNEIDERIS
Keyword(s):  
Tensile Strength ◽  
Reinforced Concrete ◽  
Bearing Capacity ◽  
Crack Depth ◽  
Experimental Studies ◽  
Concrete Structures ◽  
Assessment Process ◽  
Reinforced Concrete Structures ◽  
Compression Zone ◽  
Normal Section

This article examines flexural reinforced concrete structures condition assessment process in existing buildings on the stage where the reinforcement stress is between the yield and the tensile strength. The research is made on V. Jokūbaitis proposed methodology directly measuring the compression zone height, allowing us to evaluate the behavior of reinforced concrete beam fracture sufficiently precisely. This paper confirms the hypothesis that, when reinforcement reaches yielding stress, elastic strain dominates in concrete‘s compression zone and it is reasonable to use triangular concrete compression zone diagram, without tensile concrete above crack evaluation. The methodology of reinforced concrete structures bearing capacity assessment according to limit normal section crack depth is proposed. There is established connection between bending moments, when reinforcement achieve yielding stress and tensile strength, which allows us to decide about structures bearing capacity reserve. The results are confirmed with experimental studies and calculated values obtained by methodologies based on different reduced stress diagrams of concrete‘s compressive zone.

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