Bored concrete pile foundation distributing optical fiber sensing detecting method and system

A technology of distributed optical fiber and detection method, which is applied in the direction of using optical devices to transmit sensing components, infrastructure engineering, foundation structure tests, etc., can solve the problem of failure to reflect pile body defects and stress concentration conditions, difficult bearing capacity and pile Integrity of the body, difficulty in installing distributed optical fibers, etc., to avoid low survival rate, save detection costs, and improve monitoring efficiency
CN1888330AActive Publication Date: 2007-01-03SUZHOU NANZEE SENSING TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SUZHOU NANZEE SENSING TECH
Publication Date
2007-01-03

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Abstract

The present invention relates to a distributed optical-fibre sensing detection method for cast-in-place pile foundation. It is characterized by that it utilizes the sensing property of optical fibre for strain, so that the optical fibre can be implanted in the cast-in-place pile. When the concrete is solidified or loaded externally, said concrete and its peripheral concrete can produce synchronous deformation, its produced strain extent is the strain valve of said pile-body concrete. The invented sensing technique is a distributed data acquisition, namely, it can obtain the strain data of every point of pile-body. Said invention can utilize these data to implement detection and analysis of cast-in-place pile.
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Description

1. Technical field

[0001] The invention belongs to the technical field of geotechnical engineering monitoring and detection and the technical field of detection based on distributed optical fiber sensing; in particular, it relates to a distributed optical fiber sensing detection method for cast-in-place pile foundations. 2. Background technology

[0002] Cast-in-place pile is a type of pile foundation that can meet the load-bearing requirements of various strata. Its load-bearing characteristics and force distribution with the surrounding rock and soil can be detected by pre-embedded related sensing elements during field static load tests. Sure. The pile detection in the current static load test is mainly point measurement, that is, pre-embedded strain gauges such as steel bar gauges, strain gauges or buried stress gauges, displacement gauges, etc. on the reinforcement cage of the pile body. By measuring the strain value of each point, the pile Body strain and stress distri...

Claims

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