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CREEP EFFECTS MODELLING FOR GROUTED ANCHORS
Abstract
On the basis of the system tests of pre-stressed anchors in the anthropogenic homogeneous earthwork, valuable material has been obtained to describe the rheological features of the trench with anchors. Anchors were designed as temporary construction. Anchors were made in compacted soils with no detailed geotechnical parameters. The soil material was treated at the design stage as having a significant random distribution of mechanical and physical characteristics. This resulted in the anchor system test being the basis for anchor acceptance prior to admittance. The system test determines the displacement due to creep. The authors have presented and calibrated Kelvin's generalized rheological model based on the necessary extensive research. Presented theoretical model was fitted in all test results with almost perfect matching. According to the standard time taken for the system tests was short, but it allowed for very good quality matching of the model. A large number of measurements system tests made it possible to determine the correlation matrix between the generalized mechanical properties of the soil and the anchors.
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References11
Tritthart J. Stipanović, I.; Banfill P., Grouts for Pre-stressed Structures and Ground Anchors: A Critical Review of European Standards and Guidelines. Proceedings of the 12th International Congress on the Chemistry of Cement Montreal, Canada, 2007.
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PN-EN 1537: 2013 Execution of special geotechnical work - ground anchors
ISO 22477-5 Geotechnical investigation and testing - Testing of geotechnical structures - Part 5: Testing of grouted anchors
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