ISO 22477-5:2018
Geotechnical investigation and testing — Testing of geotechnical structures — Part 5: Testing of grouted anchors
This document establishes specifications for the execution of tension tests to be carried out on an anchor grouted in the ground, as defined in EN 1997-1 and EN 1537. Three methods of testing are recognized by this document. Test Method 1 involves cyclic tension loading with measurement of displacement at the load stages; Test Method 2 involves cyclic tension loading with measurement of load loss at the load stages; and Test Method 3 involves step-loading with measurement of displacement under successive maintained tension loads.
This document provides specifications for the experimental devices, the measurement apparatus, the test procedures, the definition and presentation of the test results and the content of records.
NOTE This document does not provide specification for the size of the proof load and the limiting criteria. These aspects reside in EN 1997-1 or its national annex for CEN countries and in similar national application documents for this test standard for ISO countries.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and symbols
4 Equipment
4.1 Test loading set-up
4.2 Reaction system
4.3 Loading device
4.4 Load measurement
4.5 Displacement measurement
4.6 Time and temperature measurement
5 Test types
5.1 General
5.2 Investigation test
5.3 Suitability test
5.4 Acceptance test
6 Execution
6.1 Test location
6.2 Test anchors
6.3 Time period between installation and test
6.4 Test preparation
6.5 Proof load
6.6 Datum load
6.7 Group testing
6.8 Alternating load testing
7 Test report
7.1 Investigation and suitability tests
7.2 Acceptance test
8 Test Method 1
8.1 General
8.2 Investigation test
8.2.1 General
8.2.2 Loading procedure
8.2.3 Measurements and checks
8.2.4 Test results
8.3 Suitability test
8.3.1 General
8.3.2 Loading procedure
8.3.3 Measurements and checks
8.3.4 Test results
8.4 Acceptance test
8.4.1 General
8.4.2 Loading procedure
8.4.3 Measurements and checks
8.4.4 Test results
9 Test Method 2
9.1 General
9.2 Investigation test
9.2.1 General
9.2.2 Loading procedure
9.2.3 Measurements and checks
9.2.4 Test results
9.3 Suitability test
9.3.1 General
9.3.2 Loading procedure
9.3.3 Measurements and checks
9.3.4 Test results
9.4 Acceptance test
9.4.1 General
9.4.2 Loading procedure
9.4.3 Measurements and checks
9.4.4 Test results
10 Test Method 3
10.1 General
10.2 Investigation test
10.2.1 General
10.2.2 Loading procedure
10.2.3 Measurements and checks
10.2.4 Test results
10.3 Suitability test
10.3.1 General
10.3.2 Loading procedure
10.3.3 Measurements and checks
10.3.4 Test results
10.4 Acceptance test
10.4.1 General
10.4.2 Loading procedure
10.4.3 Measurements and checks
10.4.4 Test results
Annex A (informative) Determination of the creep rate α
Annex B (informative) Determination of the load loss kl
Annex C (informative) Determination of the critical creep load Pc
Annex D (informative) Evaluation of the apparent tendon free length Lapp
Annex E (informative) Yield stress and tensile strength for typical anchor steels
Bibliography
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and symbols
4 Equipment
4.1 Test loading set-up
4.2 Reaction system
4.3 Loading device
4.4 Load measurement
4.5 Displacement measurement
4.6 Time and temperature measurement
5 Test types
5.1 General
5.2 Investigation test
5.3 Suitability test
5.4 Acceptance test
6 Execution
6.1 Test location
6.2 Test anchors
6.3 Time period between installation and test
6.4 Test preparation
6.5 Proof load
6.6 Datum load
6.7 Group testing
6.8 Alternating load testing
7 Test report
7.1 Investigation and suitability tests
7.2 Acceptance test
8 Test Method 1
8.1 General
8.2 Investigation test
8.2.1 General
8.2.2 Loading procedure
8.2.3 Measurements and checks
8.2.4 Test results
8.3 Suitability test
8.3.1 General
8.3.2 Loading procedure
8.3.3 Measurements and checks
8.3.4 Test results
8.4 Acceptance test
8.4.1 General
8.4.2 Loading procedure
8.4.3 Measurements and checks
8.4.4 Test results
9 Test Method 2
9.1 General
9.2 Investigation test
9.2.1 General
9.2.2 Loading procedure
9.2.3 Measurements and checks
9.2.4 Test results
9.3 Suitability test
9.3.1 General
9.3.2 Loading procedure
9.3.3 Measurements and checks
9.3.4 Test results
9.4 Acceptance test
9.4.1 General
9.4.2 Loading procedure
9.4.3 Measurements and checks
9.4.4 Test results
10 Test Method 3
10.1 General
10.2 Investigation test
10.2.1 General
10.2.2 Loading procedure
10.2.3 Measurements and checks
10.2.4 Test results
10.3 Suitability test
10.3.1 General
10.3.2 Loading procedure
10.3.3 Measurements and checks
10.3.4 Test results
10.4 Acceptance test
10.4.1 General
10.4.2 Loading procedure
10.4.3 Measurements and checks
10.4.4 Test results
Annex A (informative) Determination of the creep rate α
Annex B (informative) Determination of the load loss kl
Annex C (informative) Determination of the critical creep load Pc
Annex D (informative) Evaluation of the apparent tendon free length Lapp
Annex E (informative) Yield stress and tensile strength for typical anchor steels
Bibliography