Papers by Author: Yin Sheng Zou

Abstract: In this paper, the influence of temperature on the cracking of reinforced concrete frame is studied. Finite element analysis software is used to simulate the concrete cracking. In the modeling process, separate model element of SOLID65+LINK8 is used. Also, the Hongestad model is applied to the stress-strain relation of concrete and the rule of BISO is applied to the stress-strain relation of steel. By comparing the stress and strain of three different structure frames before and after temperature increasing, the extending rules of concrete cracking and the stress character of beam and column are analyzed. It is found that the maximum stress of beam is located in the end of the beam-column joints and the middle of beam under the temperature action. It is suggested that they are caused by moment and axis-force respectively. However, the greatest stress of column is situated at the end of beam-column joints. The reason is that the end of beam-column joints should deform to coordinate the influence of temperature. Thus, greater peak stress is caused. So, the concrete cracking is always distributed in the middle of beam span or beam-column joints, where the position of stress concentrates. In addition, the stress of steel in beams increases greatly under the temperature load, suggesting that the temperature leads to the internal force redistribution in the concrete component and the cracking of component.

Abstract: Using the nonlinear analysis method and program of the interaction of superstructure- pile-raft-soil system in layered soil in the state of the previous literature, the reaction force on the pile head and the displacement characteristics of raft of the piled-raft foundation are analysed when the thickness of the raft, the spacing of the piles, the length and the diameter of the pile are changed. Some quantitative data and qualitative conclusions are obtained in this paper.

Abstract: The layered soil model is used to simulate the nonlinear performances of the layered soil in this paper. Using the shear-displacement method, the flexibility coefficients of the pile-pile and the pile-soil are deduced based on the interaction mechanism of the pile-pile and the pile-soil in the layered soil. After that, the stiffness matrix of the pile-soil system can be established. Using coupling method presented in this paper, the interaction equation of superstructure-pile-raft-soil system is formulated. The interaction equations are used to analyze the reaction force on the pile head and the displacement characteristics of the raft of the piled-raft foundation in the layered soil and its practicality is excellent.

Abstract: Based on the analysis of internal force and stress of the truss after diagonal web member deviated in vierendeel truss type transfer story in a tall building, influence on the truss after diagonal web member deviated and suggestion of reinforcement are introduced. After reinforcement, this building has been put into use. Based on the observation of the transfer story in this building after use, it is found that the transformation satisfies applying requirements and no crack occurs.