Naslov
3D FE Analysis of Anchor Bolts with Large Embedment Depths

Autori
Ožbolt, Joško ; Eligehausen, Rolf ; Periškić, Goran

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of the 1st Symposium on Computing in Engineering / Herman, K. - Zagreb : Građevinski fakultet Sveučilišta u Zagrebu, 2003, 131-138

ISBN
953-6272-11-3

Skup
1st Symposium on Computing in Engineering

Mjesto i datum
Zagreb, Hrvatska, 04.12.2003. - 06.12.2003

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Domaća recenzija

Ključne riječi
Pull-out; Concrete; Size effect; 3D Finite element analysis; Microplane model; Crack band method

Sažetak
In the present paper the results of the three-dimensional fracture finite element analysis of headed stud anchors which fail due to pull-out of concrete cone are presented and discussed. The analysis is carried out by the use of the special purpose finite element code MASA which is based on the microplane material model for concrete. Cracking and damage phenomena are modelled in the framework of the local continuum theory (smeared crack approach). To avoid spurious mesh dependency the crack band method is employed, i.e. the constitutive law is adopted to the size of the finite element. The headed anchors are pulled-out from a concrete block. The behaviour of anchors is assumed to be linear elastic. To investigate the influence of the size of the headed stud and the influence of the embedment depth on the failure load and failure mode the geometrical properties of the anchors, the size of the anchor head and the embedment depth, are varied in the range of practical interest (hef = 100 to 1500 mm). The study shows that the size of the anchor head has a strong influence on the pull-out failure. The larger the head of the anchor the higher is the pull-out capacity. The numerical results exhibit good agreement with design formula only for small anchor heads. For larger heads the design formula significantly underestimate the ultimate pull-out capacity. Moreover, independent of the head size the analysis confirms strong size effect on the ultimate pull-out capacity.

Izvorni jezik
Engleski

Znanstvena područja
Građevinarstvo

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