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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 | Year: 2016

Experiment plays an important role in studying the mechanical performance of structures in civil engineering. But it takes a lot of time and costs expensively. Numerical model is a good option to simulate the test results. It is also convenient to carry out parameter analysis. This paper introduced the entire process of a numerical simulation of steel-concrete composite deck test. The mechanism of interfacial behavior is analyzed. Simulation method of interface is introduced specifically. The results show that the proposed method of interfacial simulation is applicable. The results of simulation and test agree well with each other. The slip is nonlinear with load. It releases the interfacial connection and enlarges the deflection of composite deck. The uplift is quite small compared with slip so that it can be neglected when evaluating the structure behavior of composite deck.


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 | Year: 2016

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.

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