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Song R.,Southwest Jiaotong University | Zhan Y.,Southwest Jiaotong University | Zhan Y.,Key Laboratory of High speed Railway Engineering Ministry of Education | Zhao R.,Southwest Jiaotong University | And 2 more authors.
Revista Tecnica de la Facultad de Ingenieria Universidad del Zulia

Experiment plays an important role in studying the nonlinear behaviors of structures, especially for steel-concrete composite structures. In order to study the nonlinear behavior of steel-concrete composite deck, a series of fiber Bragg grating (FBG for shortly) sensors were designed and arranged in a full-scale model of composite deck. Cracks, slip and uplift were measured, respectively. The results show that FBG sensors performed well in the measurement of composite structure test. The arrangement of FBG sensors was much simpler than conventional electrical strain sensors. The response of FBG sensors was sensitive to the variation of structure states. The interfacial slip showed significant nonlinearity. Comparing to interfacial slip, the magnitude of uplift was small. Source

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