Testing Research of Fiber Bragg Grating Strain Sensor Embedded in Bored Pile

Abstract:

Reinforced concrete piles are used when structures are constructed on soft ground, because it is necessary to transfer the loads into deeper strata with a sufficient bearing capacity. With the purpose of receiving more precise information about the pile features, four fiber Bragg grating strain sensors are embedded at different levels of the pile to measure the strain distribution during straining and pull-out tests. Test Pile vertical uplift static load test results show that, settlement of the test pile is steep variations, the steep rise starting point corresponding to the load of 3300 kN for the Uplift Ultimate Bearing capacity, the corresponding uplift amount is 12.45 mm; 4.4 m, 7.2 m, 11.0 m and 14.5 m sections axial strain were 115 με, 42 με, 6 με and-3 με. Maximum loading capacity is 3600 kN, the corresponding uplift amount is 30.13mm; 4.4 m, 7.2 m, 11.0 m and 14.5 m sections axial strain were 142 με, 61 με, 7 με and-1 με.

• Periodical: Applied Mechanics and Materials (Volumes 599-601)
• Pages: 1085-1089
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.599-601.1085
• Online since: August 2014
• Authors: Mian Huang, Yong Hong Wu, Yuan Yu Guan, Ying Na Li, Tao Xie, Zhen Gang Zhao, Chuan Li*
• Keywords: Axial Strain, Fiber Bragg Grating Strain Sensor, Reinforced Concrete Pile, Test Pile, Uplift Static Load Test

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