THE IMPORTANCE OF AMOUNT OF SETTLEMENT IN DETERMINING THE BEARING CAPACITY OF SOILS

Year 2017, Volume: 154 Issue: 154, 169 - 180, 04.04.2017

Selçuk Alemdağ Aslıhan Cinoğlu Elif Gacener

https://doi.org/10.19111/bulletinofmre.298630

Cited By: 3

Abstract

In this study, the aim was to determine safe bearing
capacity of soils, which outcrop around Tamzı and Akçakale located in
Gümüşhane, providing allowable settlement conditions for optimum foundation
design. To define the geotechnical properties of soils, three trenches were dug
and two seismic refractions with Multichannel Spectral Analysis of
Surface Waves (MASW) were carried out in each research area. Sieve analyses,
shear box tests, and triaxial compression tests were carried out on disturbed
and undisturbed samples taken from the trenches. Seismic velocities of the
soils were determined by seismic refraction and MASW methods. While determining
the safe bearing capacity; the equations proposed by Terzaghi, Meyerhof,
Kurtulus, Tezcan and Ozdemir, Turker, and Keceli were used and the obtained
safe bearing capacity values were compared with each other. Then, the soils
were modeled numerically by using finite element methods and safe bearing
capacities providing allowable settlement conditions were determined. According
to the results, safe bearing capacity values obtained from empirical equations
are not satisfactory for optimum foundation design. For the optimum foundation
design, safe bearing capacity should be accepted as 190 kN/m² for
clayey soil (CL) and 485 kN/m² for the clayey sand (SC).

Keywords

geophysical methods, numerical analysis, seismic velocity, bearing capacity, soil

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