Field research of a wedge-shaped core on the models of the strip foundations with variable geometric shape

10.12737/3382 ◽  
2014 ◽  
Vol 2 (1) ◽  
pp. 9-12
Author(s):  
Дмитрий Архипов ◽  
Dmitriy Arkhipov ◽  
Сергей Евтушенко ◽  
Sergey Evtushenko ◽  
Геннадий Скибин ◽  
...  
Keyword(s):  
Bearing Capacity ◽  
Natural Extension ◽  
Field Research ◽  
Strip Foundation ◽  
Foundation Model ◽  
Foundation Base ◽  
Solid Part ◽  
Sand Base ◽  
Core Base ◽  
Soil Area

Many authors noted in the field research on the models of rigid foundations that a compacted wedge-shaped core of soil is formed with the destruction of the bases, which is a natural extension of the foundation. In the research of the strip foundation model with variable geometric shape of the foundation base, a compaction soil area of spherical shape with a diameter close to the width of the foundation model is found on a sand base. A wedge-shaped core, along the edges of which there has been a shift in mass of the base when achieving the ultimate loading, has been noted in a compaction soil area. The solid part of the foundation base is the compacted wedge-shaped core base, the height of the wedge-shaped core being commensurate with the length of the elements forming the foundation. Identified geometric parameters of compacted core under the foundation base of strip foundation with geometrically variable shape can be used in determining the ultimate bearing capacity of soil of the base for such foundations.

Field research on distribution of vertical stresses and deformations in the sand base of the strip foundations with beam elements

10.12737/3384 ◽  
2014 ◽  
Vol 2 (1) ◽  
pp. 17-20 ◽  
Author(s):  
Дмитрий Архипов ◽  
Dmitriy Arkhipov ◽  
Сергей Евтушенко ◽  
Sergey Evtushenko
Keyword(s):  
Field Research ◽  
Vertical Axis ◽  
Normal Stresses ◽  
Strip Foundation ◽  
Arch Height ◽  
Strain Behavior ◽  
Beam Elements ◽  
Foundation Model ◽  
Foundation Base ◽  
Sand Base

The article presents the results of the field research on distribution of normal stresses and relative deformations in the sand base along the vertical axis in the gap between the extended beam elements of strip foundation model with variable geometric shape of the foundation base. In the field research of Stress-Strain Behavior (SSB) of the subfoundation of strip foundation model based on beam elements, it is found that the height of the soil curved arch occurring between the extended elements of the foundation base, increases during loading and when approaching the ultimate loading the experimental value of the arch height tends to the theoretical value defined by the formula proposed by M.M. Protodyakonov.

Field research on depth distribution of normal stresses in the mass of sand base of the strip foundations with beam elements

10.12737/3383 ◽  
2014 ◽  
Vol 2 (1) ◽  
pp. 13-16
Author(s):  
Дмитрий Архипов ◽  
Dmitriy Arkhipov ◽  
Сергей Евтушенко ◽  
Sergey Evtushenko
Keyword(s):  
Depth Distribution ◽  
Field Research ◽  
Normal Stresses ◽  
Beam Elements ◽  
Foundation Model ◽  
Foundation Base ◽  
Sand Base ◽  
Base Diagrams

The article presents the results of the field research on depth distribution of normal stresses in the mass of sand base in the transverse alignment of the foundation model with variable geometric shape of the foundation base. Diagrams of the distribution of normal stresses are constructed on the results of the experiments being held, and presence of the arching phenomenon in the gap between the extended elements of the foundation being confirmed.

scholarly journals Estimating the Uplift Bearing Capacity of Belled Piers Adjacent to Sloping Ground by Numerical Modeling Based on Field Tests

2020 ◽  
Vol 2020 ◽  
pp. 1-12
Author(s):  
Yangchun Han ◽  
Jiulong Cheng ◽  
Weifeng Zheng ◽  
Shijun Ding
Keyword(s):  
Numerical Modeling ◽  
Bearing Capacity ◽  
Attenuation Coefficient ◽  
Slope Angle ◽  
Field Tests ◽  
Embedment Depth ◽  
Sloping Ground ◽  
Foundation Model ◽  
The Difference ◽  
The Impact

In order to evaluate the uplift bearing capacity of belled piers beside slopes, a series of numerical simulations are carried out based on field tests data. First, a number of uplift loading tests of full-scale belled piers are carried out on the project site of transmission line in Anhui Province, China. Second, a slope-foundation model for numerical modeling is proposed and calibrated based on field tests data. The behavior of belled piers adjacent to slopes subject to uplift load is studied by numerical modeling. The impact of three parameters, including distance (a) from the belled pier to the crest of the slope, slope angle (β), and embedment depth (h) of the belled pier, has been investigated on the uplift capacity of the belled pier. Based on the simulation results, an attenuation coefficient (ω) is put forward for evaluating the reduction of uplift bearing capacity of the belled pier. The results show that the coefficient ω is negatively correlated with distance a and depth h, and the influence of distance a is greater than that of depth h according to the results of variance analysis, but the difference is not significant by F test. Moreover, the empirical equation between attenuation coefficient ω and three key factors a, β, and h had been presented by a series of fitting.

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).

scholarly journals Bearing Capacity of Floating Foundations Used PVC (Poly Vinyl Chloride) on Soft Soil With The Scale Model in the Field

2018 ◽  
Vol 7 (2.5) ◽  
pp. 84 ◽  
Author(s):  
Susy Srihandayani ◽  
Desi Putri ◽  
Nuning Kurniasih ◽  
Lusi Dwi Putri
Keyword(s):  
Theoretical Analysis ◽  
Bearing Capacity ◽  
Clay Soil ◽  
Soft Soil ◽  
Soft Clay ◽  
Maximum Load ◽  
Scale Model ◽  
Degradation Model ◽  
Poly Vinyl Chloride ◽  
Foundation Model

A soft clay soil has a low support energy, so it needs to be planned a foundation form that able to improve soil bearing capacity and estimate a maximum load that can be supported by that soil. Planning a float foundation is one of the solutions to overcome that problem. The behavior of burden degradation at float foundation which obtained from encumbering of axial introduced here. Proposed analysis based on classical theory and examination of foundation at the field. Float foundation models with different amount and dimension. At the field, a pipe which one of its ends closed tightly came into soft clay soil and then encumbered step by step. Giving an axial burden and degradation model area and noted. Boundary capacities in each foundation model estimated from the curve of load-displacement yielded of the test. From the result of theoretical analysis at a single float foundation got a proportionate result with the field result but after giving additional pile/pipe with larger one's cap got the theoretical result of bearing capacity bigger than the field result. The efficiency value of the comparison of bearing capacities theoretically that using five classic methods got more than 100%, and after giving additional pipe, the efficiency value near to 100%.  

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