标准编号：ISO 18674-5:2019
中文名称：土工勘查和测试 岩土工程监测现场仪表 第5部分：总压电池（TPC）的应力变化测量
英文名称：Geotechnical investigation and testing — Geotechnical monitoring by field instrumentation — Part 5: Stress change measurements by total pressure cells (TPC)
发布日期：2019-10
标准范围
This document specifies the measurement of stress changes by means of total pressure cells (TPC).
General rules of performance monitoring of the ground, of structures interacting with the ground, of
geotechnical fills and of geotechnical works are presented in ISO 18674-1.
If applied in conjunction with ISO 18674-4, this document allows the determination of effective stress
acting in the ground.
This document is applicable to:
— monitoring changes of the state of stress in the ground and in geo-engineered structures (e.g. in
earth fill dams or tunnel lining);
— monitoring contact pressures at the interface between two media (e.g. earth pressure on retaining
wall; contact pressure at the base of a foundation);
— checking geotechnical designs and adjustment of construction in connection with the Observational
Design procedure;
— evaluating stability during or after construction.
Guidelines for the application of TPC in geotechnical engineering are presented in Annex B.
NOTE This document fulfils the requirements for the performance monitoring of the ground, of structures
interacting with the ground and of geotechnical works by the means of total pressure cells as part of the
geotechnical investigation and testing according to EN 1997-1 and EN 1997-2 .
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