Naslov
Pullout capacity of spatial anchors

Autori
Frgić, Lidija ; Marović, Pavao ; Tor, Krešimir

Izvornik
Engineering Computations - International Journal for Computer-Aided Engineering and Software (0264-4401) 21 (2004), 6; 589-609

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
numerical analysis; finite element analysis; approximation theory; soil mechnaics

Sažetak
The paper discusses pullout capacity of spatial anchors in soil under the vertical force. In field tests, the pullout forces were gradually increased and the ground surface displacements measured in two profiles perpendicular to each other. The laboratory and field tests were performed for several representative embedment depths and anchor diameter ratios in the same sand and in the same conditions. The anchor pulling was laboratory-tested so that the vertical anchor displacements were given and the corresponding force intensity measured. The Finite Element Method (FEM) was used for the pullout force computation in test cases. The relations between displacements and pullout forces obtained by the laboratory tests, field tests, and numerical computations were statistically analysed. Due to gradual convergence of pullout forces towards the limit value, the exponential function was adopted as an approximation curve. The two obtained constants of the function represent the significant mechanical characteristics. The first is limit pullout force and the second gives the total stiffness of the soil mechanical system.

Izvorni jezik
Engleski

Znanstvena područja
Građevinarstvo, Rudarstvo, nafta i geološko inženjerstvo, Temeljne tehničke znanosti

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