Assessing the reliability of determination of the bearing capacity of piles in frozen soils (from construction rule and regulation 2.02.04-88)

1995 ◽  
Vol 32 (4) ◽  
pp. 143-146
Author(s):  
Yu. S. Mirenburt
Keyword(s):  
Bearing Capacity ◽  
Construction Rule ◽  
Frozen Soils

Bearing Capacity of Strip Footings in Frozen Soils

1975 ◽  
Vol 12 (3) ◽  
pp. 393-407 ◽  
Author(s):  
B. Ladanyi
Keyword(s):  
Mathematical Model ◽  
Bearing Capacity ◽  
Frozen Soil ◽  
Simple Mathematical Model ◽  
Frozen Soils ◽  
Present Solution ◽  
Strip Footings ◽  
Allowable Bearing Pressure ◽  
Circular Footing

The first part of this paper discusses some basic requirements for the determination of the allowable bearing pressure for frozen soils, with a particular reference to the delayed deformations due to creep and consolidation, which occur simultaneously in frozen soils containing large amounts of unfrozen water.In the second part of the paper, it is shown how the creep settlement and failure of a strip footing in frozen soil can be predicted by using a simple mathematical model of an expanding cylindrical cavity. With the help of a previously obtained solution, valid for a circular footing, and an appropriate empirical depth factor, the present solution is then extended to cover also the bearing capacity of footings of any shape and at any depth of embedment.

Determination of Bearing Capacity of Cleared and Graded Areas at Airports

2021 ◽  
Vol 147 (1) ◽  
pp. 04020086
Author(s):  
Vittorio Ranieri ◽  
Nicola Berloco ◽  
Donato D’Auria ◽  
Vincenzo Disalvo ◽  
Veronica Fedele ◽  
...  
Keyword(s):  
Bearing Capacity

Determination of the bearing capacity of piles in permafrost by static penetration

1986 ◽  
Vol 23 (2) ◽  
pp. 58-63 ◽  
Author(s):  
Yu. G. Trofimenkov ◽  
M. A. Minkin ◽  
V. I. Gvozdik
Keyword(s):  
Bearing Capacity ◽  
Static Penetration

Prediction of Vertical Ultimate Bearing Capacity in Piles Based on the Improved Hyperbolic Model

2011 ◽  
Vol 250-253 ◽  
pp. 2271-2275
Author(s):  
Cheng Wang ◽  
Qi Zhang
Keyword(s):  
Bearing Capacity ◽  
Ultimate Bearing Capacity ◽  
Load Test ◽  
Hyperbolic Model ◽  
Maximum Point ◽  
Static Load Test ◽  
Hyperbolic Curve ◽  
The Mathematical Model ◽  
Test Pile

Vertical static load test is widely used in the determination of pile bearing capacity, the mathematical model used to fit test pile data in determining the bearing capacity is essential. From the perspective of analytic geometry, the paper analyzes the traditional method of hyperbola, of which the asymptotic line of equilateral hyperbola was used to determine the ultimate bearing capacity. By extending the equal-axed conditions, a more general form of hyperbolic equation is derived and feasibility of such method is also analyzed, which indicates that the maximum point of curvature in such hyperbolic curve can determine the ultimate bearing capacity and such method is proved to be reasonable in practical projects.

scholarly journals Determination of bearing capacity of shallow foundations without using superposition approximation

2003 ◽  
Vol 40 (2) ◽  
pp. 450-459 ◽  
Author(s):  
D Y Zhu ◽  
C F Lee ◽  
K T Law
Keyword(s):  
Bearing Capacity ◽  
Field Method ◽  
Ultimate Bearing Capacity ◽  
Shallow Foundation ◽  
Closed Form Expression ◽  
Safe Side ◽  
Superposition Approximation ◽  
Bearing Capacity Factor ◽  
Rigorous Procedure

The Terzaghi superposition assumption has been widely used to determine the bearing capacity of shallow footings. Although this assumption always errs on the safe side, a rigorous procedure to calculate the bearing capacity is still of engineering value. This paper presents such a procedure that is free from errors as a result of the superposition assumption. It demonstrates that the ultimate bearing capacity can be precisely expressed by the Terzaghi equation, except that the bearing capacity factor Nγ is dependent upon the surcharge ratio. A recently developed numerical method, i.e., the critical slip field method, is used to calculate the modification coefficient for modifying Nγ. It is found that this modification coefficient increases with the surcharge ratio at small values of surcharge ratio and then remains constant for large values of surcharge ratio. However, the errors invoked by the superposition assumption do not exceed 10%. On the basis of numerical calculations, a simple closed-form expression of the modification coefficient is proposed that yields the theoretically rigorous ultimate bearing capacity. In the later part of the paper, errors in bearing capacity calculations owing to the use of conventional procedures are analyzed. It is concluded that the continued use of conventional procedures is justified, but the inherent errors should not be neglected in assessing the performance of shallow foundations.Key words: shallow foundation, strip footing, ultimate bearing capacity, critical slip field.

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.

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