Open AccessThe test effect evaluation of distributed optical fiber sensing technology applied to stress test of bored pile
Author(s) -
Long Zhang,
Zhenghong Liu,
Yu Yang,
Jian Zheng,
Xiaowei Huang,
Chen Xiaosan
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/643/1/012021
Subject(s) - pile , optical fiber , deformation (meteorology) , fiber , fiber optic sensor , interference (communication) , stress (linguistics) , materials science , structural engineering , engineering , composite material , electrical engineering , telecommunications , channel (broadcasting) , linguistics , philosophy
The application of distributed optical fiber sensing technology to stress test of bored pile is a kind of line measurement method developed in recent years. It has the advantages of more measuring points and stronger anti-interference, but its test effect is rarely compared with other methods in practical engineering. In order to evaluate the test effect of distributed optical fiber sensing technology, the optical fiber and sliding micrometer tube were embedded at the same time during the construction of test pile, and then the static load test of pile was carried out to compare the test results of the two. The test results show that the strain distribution of the pile obtained by the distributed optical fiber sensing technology and the sliding micrometer method are the same, and the maximum strain difference between them is about 100 με. The distributed optical fiber sensing technology can better reflect the detailed deformation of the pile.