BS EN ISO 22477-4:2018現行
Geotechnical investigation and testing. Testing of geotechnical structures. Testing of piles: dynamic load testing
出版：British Standards Institution
專家解讀視頻
This document establishes the specifications for the execution of dynamic load tests in which a singlepile is subject to an axial dynamic load in compression.This document outlines the methods of testing required to allow assessment of pile resistance to bedetermined from the following methods and procedures described in EN1997 -1: 2004+A1:2013:adynamicimpacttestingdeterminationofpilecompressiveresistancebyevaluationofmeasurements of strain and acceleration and or displacement at the pile head with respect to time;b) pile driving formulae – evaluation of pile compressive resistance from blow counts and hammerenergy during pile driving;c) wave equation analysis – evaluation of pile compressive resistance from blow counts by modellingof the pile, soil and driving equipment;d) multi-blow dynamic testing – evaluation of pile compressive resistance from a series of blowsdesigned to generate different levels of pile head displacement and velocity.This document is applicable to piles loaded axially in compression.This document is applicable to all pile types mentioned in EN 1536, EN 12699 and EN 14199.The tests considered in this document are limited to dynamic load tests on piles only.NOTE 1 ISO 22477-4 can be used in conjunction with EN1997 -1: 2004+A1: 2013. Numerical values of partialfactors for limit states from pile load tests to be taken into account in design are provided in EN 1997-1. For designto EN 1997-1 the results from dynamic load tests will be considered equivalent to the measured compressiveresistance Rc,m after being subject to appropriate analysis.NOTE 2 Guidance on analysis procedures for dynamic load testing results is given in Annexes A, B, D, E and F.This document provides specifications for:i) investigation tests, whereby a sacrificial pile is loaded up to ultimate limit state;ii) control tests, whereby the pile is loaded up to a specified load in excess of the serviceabilitylimit state.NOTE 3 Generally, an investigation test focuses on general knowledge of a pile type; a control test focuses onone specific application of a pile.
EN ISO 22477-4 : 2018 - Identical
ISO 22477-4 : 2018 - Identical
ISO 22477-4 : 2018 - Identical
EN ISO 22477-4 : 2018 - Identical
