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Tong Z.N.,Jiangxi Science and Technology Normal University | Huang Y.,Jiangxi Science and Technology Normal University | Huang Y.,Nation Engineering Laboratory for High Speed Railway Construction
Applied Mechanics and Materials | Year: 2013

The high-rise building body structures protruding parts stiffness can happen easily wind shock severe vibration under wind loads, effect whip sheath. From the principle of coupled vibration, wind-excited response formula to deduce the protruding portion of the building, the preparation whip sheath effect coefficient condensed reference table for engineering. © (2013) Trans Tech Publications, Switzerland.


Huang Y.,Jiangxi Science and Technology Normal University | Huang Y.,Nation Engineering Laboratory for High Speed Railway Construction | Guo P.,Jiangxi Science and Technology Normal University | Tong Z.N.,Jiangxi Science and Technology Normal University
Applied Mechanics and Materials | Year: 2014

Reinforced concrete two-way slabs are widely used in industrial, civil, public buildings. However, the calculation method of curvature of deflection wasn't clearly put forward in Code for design of concrete structures in China. Considering the nonlinear characteristics of concrete and bidirectional bending the formula of curvature deflection for reinforced concrete two-way slabs was derived based on plate theory in this paper. The iterative method is adopted in order to solve stress and strain of reinforced and concrete in reinforced concrete two-way slabs. The whole calculation process was realized by MATLAB software programming. The correctness of method in this paper was confirmed by comparing the results and the test data of the literature. © (2014) Trans Tech Publications, Switzerland.


Huang Y.,Central South University | Huang Y.,Jiangxi Science and Technology Normal University | Huang Y.,Nation Engineering Laboratory for High Speed Railway Construction | Wei J.,Central South University | And 5 more authors.
Journal Wuhan University of Technology, Materials Science Edition | Year: 2014

The chloride ion transmission model considering diffusion and convection was established respectively for different zones in concrete by analyzing chloride ion transmission mechanism under the drying-wetting cycles. The finite difference method was adopted to solve the model. The equation of chloride ion transmission model in the convection and diffusion zone of concrete was discreted by the group explicit scheme with right single point (GER method) and the equation in diffusion zone was discreted by FTCS difference scheme. According to relative humidity characteristics in concrete under drying-wetting cycles, the seepage velocity equation was formulated based on Kelvin Equation and Darcy's Law. The time-variant equations of chloride ion concentration of concrete surface and the boundary surface of the convection and diffusion zone were established. Based on the software MATLAB the numerical calculation was carried out by using the model and basic material parameters from the experiments. The calculation of chloride ion concentration distribution in concrete is in good agreement with the drying-wetting cycles experiments. It can be shown that the chloride ion transmission model and the seepage velocity equation are reasonable and practical. Studies have shown that the chloride ion transmission in concrete considering convection and diffusion under the drying-wetting cycles is the better correlation with the actual situation than that only considering the diffusion. © 2014 Wuhan University of Technology and Springer-Verlag Berlin Heidelberg.

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