Recent progress in testing of ground anchors

Recent progress in testing of ground anchors

Paper in proceedings (conference paper)

Grouted ground anchor is a structural component used to transmit tension force from the structure to the subgrade. Determination of the ground anchors ultimate carrying capacity is mostly conducted using various empirical and semi-empirical methods. These procedures are usually successful, but highly simplified. Hence, each system ground anchor has to be tested during its prestressing to prove design assumptions. The aim of the test is to prove accomplishment of acceptance criteria, which has been defined to demonstrate the capacity and serviceability of tested anchor. The acceptance criteria are derived also from the investigation tests conducted in advance on non-system anchors. The research project aimed on the better understanding of behavior of prestressed ground anchors in fine-grained soils has been solved in Czech Republic. One of the outputs of this research is the software utility developed for purpose of keeping and evaluating the test records according to the new Europe recommendations. The paper describes set up of full-scale investigation test of ground anchors and the process of evaluation the results of such test via newly developed software.

Grouted ground anchor is a structural component used to transmit tension force from the structure to the subgrade. Determination of the ground anchors ultimate carrying capacity is mostly conducted using various empirical and semi-empirical methods. These procedures are usually successful, but highly simplified. Hence, each system ground anchor has to be tested during its prestressing to prove design assumptions. The aim of the test is to prove accomplishment of acceptance criteria, which has been defined to demonstrate the capacity and serviceability of tested anchor. The acceptance criteria are derived also from the investigation tests conducted in advance on non-system anchors. The research project aimed on the better understanding of behavior of prestressed ground anchors in fine-grained soils has been solved in Czech Republic. One of the outputs of this research is the software utility developed for purpose of keeping and evaluating the test records according to the new Europe recommendations. The paper describes set up of full-scale investigation test of ground anchors and the process of evaluation the results of such test via newly developed software.

ground anchor, prestressing tests, acceptance criteria, carrying capacity, data recording

ground anchor, prestressing tests, acceptance criteria, carrying capacity, data recording

ŠTEFAŇÁK, J.; MIČA, L.

2020

30.06.2019

SGEM

Albena, Bulgaria

978-6-1974-0876-8

19th International Multidisciplinary Scientific GeoConference SGEM 2019, vol. 1.2

1314-2704

International Multidisciplinary Scientific GeoConference SGEM ...

Republic of Bulgaria

447

454

8

https://www.sgem.org/index.php/elibrary?view=publication&task=show&id=5102