Deflection is the most direct indicator that reflects bearing capacity of bridge and overall stiffness. There are many ways to measure deflection Bridges, inclination angle method commonly used indirect method, but existing theory relatively complicated. Based on facts small inclination, this article proposes obtaining by secant line constructed from adjacent measurement points. Firstly, accord...

Results and Conclusion: The analysis results show that the cracking deflection of the prestressed, concrete beams increases with the increase in the porosity of the grouting material of the beams under different load forms. By contrast, under the same porosity grouting material, the cracking deflection of the symmetrical loads is larger than that of the uniform and concentrated loads. As the po...

Dynamic models of structural and acoustic systems are usually obtained by means of either modal analysis or finite element modeling. Detrimentally, both techniques rely on a comprehensive knowledge of the system’s physical properties. As a consequence, experimental data and a nonlinear optimization are required to refine the model. For the purpose of control, system identification is often empl...